投稿時間:2022-02-21 02:09:22 RSSフィード2022-02-21 02:00 分まとめ(13件)

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python	Pythonタグが付けられた新着投稿 - Qiita	エクセル帳票からのデータ取得は辛いよ　その１～pandasによる抽出～	https://qiita.com/ensembleconfuoco/items/747f104b73d5587cc04c	datadataresetindexdropTruedataこうすると、下記の様なデータフレームができます。	2022-02-21 01:01:26
海外TECH	MakeUseOf	How to Automatically Shut Down a Windows 10 and 11 PC When It's Idle	https://www.makeuseof.com/windows-10-11-shutdown-idle/	idlepcs	2022-02-20 16:16:13
海外TECH	DEV Community	Secure Content Delivery with Amazon CloudFront | AWS White Paper Summary	https://dev.to/awsmenacommunity/secure-content-delivery-with-amazon-cloudfront-aws-white-paper-summary-12el	Secure Content Delivery with Amazon CloudFront AWS White Paper SummarySecuring delivery over the public internet is an important part of cloud security This whitepaper describes how Amazon CloudFront a highly secure managed service can help architects and developers secure the delivery of their applications and content by providing useful security supporting features IntroductionAs more businesses move to cloud computing public awareness of the significance of cloud security increases as well Cloud computing uses public internet to deliver the results to users Securing this delivery is one of the important parts of cloud security Amazon CloudFront is a fast content delivery network CDN service that securely delivers data videos applications and APIs to customers globally with low latency and high transfer speeds CloudFront is integrated with Amazon Web Services AWS The physical points of presence PoPs are directly connected with AWS global infrastructure and the service works seamlessly with AWS services including Amazon Simple Storage Service Amazon S AWS Shield Amazon CloudWatch and Lambda Edge Because CloudFront is the component nearest to end users sometimes called “viewers in many workloads and by default its endpoint is open to public internet CloudFront is one of the first points on which the security of a customer s application relies on AWS follows the shared responsibility security model and because CloudFront is a fully managed service AWS responsibility includes physical infrastructure network servers operating systems and software Securing the data itself is still the customer s responsibility To strengthen your applications security posture it is crucial to understand what kind of security measures are used in CloudFront and what kind of security features you can utilize This document discusses how AWS protects CloudFront infrastructure security of the cloud and how you can harden your applications security security in the cloud by leveraging CloudFront features How AWS Provides Security of the Cloud for Amazon CloudFront AWS security processesAWS operates the global cloud infrastructure that you use to provision a variety of basic computing resources and services such as compute and storage The AWS global infrastructure is designed and managed according to security best practices as well as a variety of security compliance standards As an AWS customer be assured that you re building web architectures on some of the most secure computing infrastructure in the world As a managed service CloudFront is protected by these AWS global infrastructure security processes The implemented controls include physical and environmental security such as fire detection and suppression logical AWS access controls such as account review and audit network security fault tolerant design and other important secure design principles and practices Security is built into every layer of the AWS infrastructure and carries into each of the services that run in it AWS services including CloudFront are architected to work efficiently and securely with all AWS networks and platforms Each service provides extensive security features designed to help you protect sensitive data and applications For more information see the Best Practices for Security Identity and Compliance More Details can be found here How CloudFront Can Help You Ensure Security in the CloudThis section of the whitepaper focuses on how you can harden your application s security posture by using various features that CloudFront provides Using HTTPS with CloudFrontWhen you use Hypertext Transfer Protocol HTTP to deliver data your data is exposed to public internet because the protocol transmits data in a clear text format This can be exploited with man in the middle attacks which attempt to steal or tamper with private data Hypertext Transfer Protocol Secure HTTPS is an extension of HTTP that provides secure and reliable communication over the internet HTTPS uses TLS which encrypts the transmitted data and checks the message integrity TLS also provides a TLS certificate which authenticates a server s identity Some security standards including Payment Card Industry Data Security Standard PCI DSS or industry standard Apple iOS App Transport Security ATS require the use of HTTPS There are other benefits such as better search engine optimization when using HTTPS CloudFront comes with native HTTPS support You can configure CloudFront to deliver contents via HTTPS from viewer to origin end to end Viewer HTTPS configurationIn CloudFront the HTTPS setting is configurable for two different connections Viewer to CloudFrontCloudFront to originIn the context of HTTPS from viewer to CloudFront CloudFront is a server which receives the TLS initiating “Client Hello in the TLS handshake process Because the HTTPS is initiated by the client CloudFront has options to Accept both HTTP and HTTPSLet the client use HTTPS if they initiate the request via HTTP orIgnore HTTP and respond with an error messageThese options can be applied to a specific URI path so you can configure some part of your website to accept HTTP However this could open a possible vulnerability or cause a bad user experience such as mixed content warning You may also need to set up a TLS certificate for your CloudFront distribution when you serve the application with your own domain name other than the default cloudfront net In this case you will leverage AWS Certificate Manager ACM in which you can request the issuance of a domain validation certificate or import your existing certificate with no additional cost ACM supports certificate renewal for Amazon issued certificates as well Another important configuration is choosing the TLS security policy CloudFront provides a number of security policies each of which defines available TLS versions and cipher suites for viewer HTTPS The oldest security policy still includes SSLv to support legacy clients but we recommend that you use the latest security policy This way the viewer HTTPS connection will not use the old cipher and it will get the benefit of the latest cipher for example perfect forward secrecy PFS Finally you can set up Server Name Indication SNI to be on or off SNI is a TLS extension which enables the client to put the server name in the initial TLS handshake “Client Hello step Because CloudFront serves multiple domains this extension helps CloudFront to choose the correct TLS certificate to provide to client SNI is supported by most modern browsers but if you need to enable using a legacy client that doesn t support SNI you can choose to turn SNI support off which will incur extra cost According to caniuse com more than of clients use SNI enabled agents CloudFront also supports Online Certificate Status Protocol OCSP stapling without further configuration which enhances the performance of HTTPS delivery by providing a certificate validation response together with TLS certification during the TLS handshake For Viewer side HTTPS TLS is automatically supported when the client initiates a TLS handshake TLS eliminates weak cipher suites provides perfect forward secrecy and support RTT TLS handshakes Perfect forward secrecy means each session will not be compromised even if the private key used in session key exchange is compromised in the future Because previous sessions are protected attackers have limited access to private data TLS mandates this by using only ephemeral key exchange algorithms such as Elliptic Curve Diffie Hellman ECDHE TLS reduces TLS handshakes to one round trip compared to two round trips in previous TLS This improves the TLS handshake latency up to using the AWS internal test Figure ー RTT TLS handshake TLS and RTT TLS handshake TLS Origin HTTPS configurationWhen connecting to the origin with HTTPS CloudFront becomes a client who initiates a TLS handshake In this context CloudFront operation is focused on authenticating the origin to avoid possible man in the middle attacks CloudFront trusts only the origin server when the TLS certificate provided by the origin server meets the following conditions The certificate matches the requested domain nameThe certificate is issued by a trusted certificate authority CA The certificate chain is correctThe certificate is not expiredIf any of these conditions are not met CloudFront drops the connection to the origin and responds with an error message to the client CloudFront validates either the Common Name CN or Subject Alternate Name SAN of the origin TLS certificate with the origin domain name that is registered in the CloudFront Distribution Origin Settings by default For example if a CloudFront Distribution is set up to deliver to viewers and forward requests to origin example com the origin TLS certificate must contain origin example com in its CN or SAN either the exact name or in wildcard form such as example com CloudFront uses the Host header value instead if you configure it to forward the Host header which means that the origin s TLS certificate must contain www example com in its CN or SAN CloudFront also uses those domain names as an SNI in its initial TLS handshake You may want to utilize this fact when using an Application Load Balancer ALB as an origin because you must install a TLS certificate and its CN or SAN will not validate the default ALB domain for example alb us east elb amazonaws com but will validate your own domain www example com instead Alternatively you can set a DNS record such as origin example com set the origin TLS certificate to validate that domain name and associate the DNS record to the ALB via Amazon Route or another domain name server CloudFront verifies whether the origin TLS certificate was issued by a trusted certificate authority CA by comparing the issuer with the Mozilla included CA Certificate List Certificates that are issued by other CAs such as private certificates will not be validated and the connection will subsequently fail CloudFront enables you to specify the minimum TLS protocol version to connect to the origin Using the latest version of TLS on both CloudFront Distribution and origin setting will avoid known attacks such as POODLE or BEAST which exploit older versions of TLS Securing your contents with CloudFrontCloudFront provides a number of methods to help protect content from unwanted access You can specify geographically based restrictions have CloudFront authorize access to content based on a signature in the query string or in a cookie and have CloudFront encrypt sensitive data fields so that only systems with the proper rights can access them More details can be found here Protecting your origin by allowing access to CloudFront onlyControlling access to the origin is necessary along with controlling viewer access to have secure delivery via CloudFront In this context origin should allow requests only from CloudFront and shut down attempts from any others S origin with CloudFrontS provides access control in conjunction with AWS Identity and Access Management AWS IAM bucket policy bucket ACL and object ACL When using S origin with CloudFront you can use CloudFront Origin Access Identity OAI to secure S bucket access OAI creates a principal that S can authenticate with and it is used in a CloudFront distribution By allowing this OAI principal an s GetObject action in bucket policy S allows CloudFront distribution to access to the content Sid StmtCFOAI Effect Allow Principal AWS arn aws iam cloudfront user CloudFront Origin Access Identity lt OAI ID gt Action s GetObject Resource arn aws s lt s bucket name gt With this bucket policy set you can turn on “Block all public access to make the S bucket reachable only through CloudFront Custom origin with CloudFrontUnlike S which is a static object storage system custom origins such as web servers can inspect incoming HTTP requests and decide to discard the request You can allow only trusted CloudFront distribution to access your origin by adding a custom header with a secret value to the origin request in CloudFront and setting up header inspection from the origin side ALB has a rule that can be used for this header inspection purpose if the origin web server is on AWS Figure ーAdding a secret header from the CloudFront consoleCloudFront publishes its IP address ranges along with other Amazon services without any prior setting or cost requirements This enables you to allow CloudFront IP address ranges in your origin firewall or add them into security groups You may need more than one security group to allow all CloudFront IP ranges By using an IP allowed list and header inspection together custom origin allows only chosen CloudFront distribution to access its private content Improving security by enabling security specific headersTo improve the security of your content you can use HTTP security headers that are natively supported by the HTTP protocol and most modern browsers These security headers tell the browser how to behave when handling website content They can do things such as enforced communications over HTTPS or defining from where JavaScript content can be loaded The Open Web Application Security Project OWASP provides guidance on the implementation of HTTP security headers to improve the security of your application through its secure headers project the latest guidance includes examples and best practices Security headers are commonly implemented using the web application configuration but when that is not possible they can be added as part of the request handling process in CloudFront by modifying the origin response using a Lambda edge function An example implementation is shared in this blog post This solution adds the headers to the origin response keeps that cached in CloudFront and updates it every time content is refreshed Another consideration for enhanced security using HTTP headers is the appropriate configuration of Cross origin resource sharing CORS In modern applications the use of cross domain resources is a necessity The default restriction from browsers that only allows content from the same origin is impractical To allow requests that have different origins domain protocol or port CORS must be enabled A number of HTTP headers relate to CORS but two response headers are most important for security Access Control Allow Origin specifies which domains can access a site Access Control Allow Methods specifies which HTTP request methods GET PUT DELETE and others can be used to access resources To implement CORS securely you must associate a validation list with Access Control Allow Origin header that identifies which specific domains can access resources Then your application can validate against this list when a domain requests access Protecting from external threats at the edgeWhen your application runs on AWS you can leverage both CloudFront and AWS WAF to help defend against application layer DDoS attacks By using AWS WAF you can configure web access control lists Web ACLs on your CloudFront distributions to filter and block requests based on request signatures Each Web ACL consists of rules that you can configure to string match or Regular Expression regex match one or more request attributes such as the URI query string HTTP method or header key By using AWS WAF s rate based rules you can automatically block the IP addresses of bad actors when requests matching a rule exceed a threshold that you define Requests from offending client IP addresses will receive a “ Forbidden error response and will remain blocked until request rates drop below the threshold This is useful for mitigating HTTP flood attacks that are disguised as regular web traffic To block attacks from known bad acting IP addresses you can create rules using IP match conditions You can use AWS managed WAF rules or use Managed Rules for AWS WAF offered by sellers in the AWS Marketplace These rule sets can block specific malicious IP addresses that are included in IP reputation lists Both AWS WAF and CloudFront enable you to set geo restrictions to block or allow requests from selected countries This can help block attacks originating from geographic locations where you do not expect to serve users If you are subscribed to AWS Shield Advanced you can engage the AWS DDoS Response Team DRT to help you create rules to mitigate an attack that is hurting your application s availability For more information see Configure AWS DRT support You can use AWS Firewall Manager to centrally configure and manage AWS WAF rules for your CloudFront distributions across your organization Your AWS Organizations management account can designate an administrator account which is authorized to create Firewall Manager policies These policies allow you to define criteria such as resource type and tags which determine where rules are applied This is useful in case you have many accounts and want to standardize your protection Firewall Manager also allows you to create policies that manage AWS Shield protected resources and VPC security groups To learn more about using geo restriction to limit access to your CloudFront distribution see Restricting the Geographic Distribution of Your Content To learn more about using AWS WAF see Getting started with AWS WAF To learn more about configuring rate based rules see Protect Web Sites amp Services Using Rate Based Rules for AWS WAF To learn how to manage the deployment of AWS WAF rules across your AWS resources with AWS Firewall Manager see Getting started with AWS Firewall ManagerAWS WAF policies Managing access permissions to your CloudFront resourcesTo perform operations to your CloudFront resources such as creating a distribution or invalidating an object you can use AWS IAM IAM helps you securely control access to AWS resources by enabling you to control who is authenticated signed in and authorized has permissions to use resources You can create and manage AWS users groups roles and permissions to allow or deny actions within AWS services IAM offers AWS managed policies created and administrated by AWS that are designed to provide permissions for many common use cases For example CloudFrontFullAccess provides full access to the CloudFront console plus the ability to list S buckets CloudFrontReadOnlyAccess provides access to CloudFront distribution configuration information and list distributions In some scenarios you might want to grant a specific level of access to a resource that you specify For example you might allow update delete and create invalidations access to a distribution that you specify by the distribution s Amazon Resource Name ARN You can create your own customer managed policies that you administer in your own AWS account You can attach these policies to multiple principal entities to give each entity the permissions that are defined in the policy These are referred as Identity Based policies You can also attach policies to resources referred as resource based policies Even though CloudFront does not support resource based policies it does support resource level policies that enable you to use ARNs to specify individual resources in a policy You can define more granular permissions with tag based policies by granting access to specific resources based in an authorization strategy that defines permissions based on attributes In AWS these attributes are called tags You can define which users can perform actions on a distribution based on the tag that it already has For example tagging resources and using tags in policy statement conditions can help you grant access to specific resources as the number of those resources grows over time without having to continuously add them to the policy Condition StringEquals aws RequestTag stage gamma prod For a list of actions that you can specify to grant or deny permissions to use each action see Actions resources and condition keys for Amazon CloudFront in the IAM User Guide Logging and monitoring in CloudFrontLogging and monitoring are an important part of maintaining the availability and performance of CloudFront AWS provides several tools for monitoring your CloudFront resources and activity logs to help you respond to potential incidents The first service to consider is Amazon CloudWatch because it provides you with data and actionable insights from your resources CloudFront is integrated with Cloudwatch and automatically publishes six operational metrics per distribution You can monitor these metrics to detect anomalous behavior and create alarms You can watch a single metric over a time period that you specify If the metric exceeds a given threshold a notification is sent to an Amazon SNS topic or an AWS Auto Scaling policy For example receiving a notification when the xx error rate exceeds which helps you identify clients receiving Forbidden errors assists you to quickly identify the start of a possible DDoS attack So does receiving a notification that the total amount of requests exceeds the expected value specified in units There are additional metrics you can enable for a cost These units must be enabled for each individual distribution that requires it For example you can monitor and combine error rate and cache hit rate to measure CloudFront efficiency and alert on events as they occur monitor a drop in the CHR or monitor an increase in xx errors You have also the option to enable CloudFront access logs which provide detailed records about requests that are made to a distribution This access log information can be useful in security and access audits You can enable standard logs at no additional cost that are delivered to the S buckets of your choice Another option is real time logs that for a fee are delivered within seconds of receiving the requests to the data stream of your choice in Amazon Kinesis Data Streams Querying these logs enables you to explore users surfing patterns across your web properties that are served by CloudFront For example you can query for detailed HTTP status code responses on a certain day or hour or statistics based on the URI paths It s good practice to review CloudFront service activity with AWS CloudTrail which provides a record of actions taken by a user role or AWS service in CloudFront by automatically recording and storing event logs Using the information collected by CloudTrail you can determine the request that was made to CloudFront the IP address from which the request was made who made the request when it was made and other additional details CloudTrail helps you track and automatically respond to activity threatening the security of your AWS resources with Amazon CloudWatch Events integration You can monitor specific CloudFront API requests by creating a CloudWatch Event rule A rule matches incoming events and routes them to targets for processing For example you can create a rule to trigger an SNS topic when the API UpdateDistribution is requested Configuration managementTo record and evaluate configurations of your AWS resources you can use AWS Config which provides you with a detailed view of the configuration of your distributions This includes how the resources are related to one another and how they were configured in the past so you can see how the configurations and relationships change over time Examples of CloudFront related resources are AWS WAF WebACL AWS Certificate Manager and S buckets You can also evaluate configuration against desired configurations with AWS Config Rules For example AWS Config Rules helps you to evaluate whether your CloudFront resources comply with common security best practices You can choose managed rules like viewer policy HTTPS SNI enabled OAI enabled origin failover enabled WAF WebACL or Shield resource policies to be triggered when the configuration changes Managed rules can periodically run evaluations at a frequency that you choose for example every hours AWS Firewall Manager relies on AWS Config for automatic alerts and remediations ConclusionThis document has reviewed the security measures in Amazon CloudFront infrastructure and reviewed how data can be securely delivered using CloudFront CloudFront provides private data protection with HTTPS and various supporting features and protects the application from external threats such as DDoS attacks By combining other services CloudFront can support your holistic security governance requirements ReferenceOriginal paper	2022-02-20 16:48:22
海外TECH	DEV Community	Introduction to Data Structures and Algorithms with Python	https://dev.to/brayan_kai/introduction-to-data-structures-and-algorithms-with-python-3jhn	Introduction to Data Structures and Algorithms with Python IntroductionData is something that everyone is familiar with but knowing how to organize alter manage and retrieve data is even more crucial Being a competent programmer isn t only about whether or not your code works it s also about readability and scalability which refers to how fast and memory efficient your code is A thorough understanding of Data Structures and Algorithms will help you become a better programmer since you will be more concerned with developing good code that is legible by all and highly optimized in terms of time and space memory This article I believe will teach you a lot PrerequisiteTo get the most out of this series you should be familiar with the fundamentals of at least one programming language preferably Python because the course will focus on Python Data Structures and Algorithms Another requirement for learning and exploring Data Structures and Algorithms is an open heart Being willing to learn and believing in your ability to succeed You don t have to put any pressure on yourself but I believe that if you put forth consistent effort day after day you will gain the most out of this article The goal of this articleAfter reading this article to the end every reader should be able to Understand what Data Structures is The different types of data structures andThe reasons for studying Data Structures What are Data Structures In Simpler TermsLet me begin by simplifying the entire concept of data structures and algorithms An algorithm is simply a fancy phrase for a software that solves a problem or a set of instructions for solving a problem Algorithms may appear to be a bit like a magic act at first glance You can see the trick s input and output but everything that happens in between appears to be a bit magical My goal is to walk you through the phases of the trick and explain what materials you ll need to pull it off The resources are now what we term data structures or a common pattern in the problem in this illustration However I cannot guarantee that I will go over every last detail but I believe that after this you will be able to apply algorithms to problems you may encounter as a developer Let s take a closer look at Python Data StructuresData Structures are data storage and organization approaches that make it easier to alter navigate and access data They also decide how data is collected what functions we may use to access it and how data is related to one another The primary purpose of data structures is to provide a method for organizing data so that it may be used effectively There are also several data structures suitable for various applications some of which are highly specialized for certain purposes Python algorithms are a thorough series of instructions that aid in the data processing for a certain purpose Let s look at the different forms of data structures now Different Types of Data StructuresThere are two types of data structures primitive and non primitive with linear and non linear data structures falling within the non primitive category Linear Data StructuresA linear data structure is one in which data items are ordered consecutively or linearly with each member attached to its previous and next neighboring elements A single level is involved in a linear data structure As a result we can explore all of the elements in only one run Because computer memory is organized in a linear fashion linear data structures are simple to build Lists Linked Lists Stacks and Queues are some examples Non Linear Data StructuresNon linear data structures are data structures in which data elements are not ordered sequentially or linearly A single level is not involved in a non linear data structure As a result we won t be able to traverse all of the elements in a single run In comparison to linear data structures non linear data structures are more difficult to construct In comparison to a linear data structure it makes better use of computer memory Trees and graphs are two examples Types of Data Structures and Their MeaningsWe saw that there are linear and non linear data structures in the previous section so in this section we ll pick several data structures and see what they signify and how to work with We are also going to discuss about Sets Tuples and Dictionaries in Python I believe they will also be of great interest to us ListsList is in my opinion the most popular and simple Data Structure as well as the most commonly used Data Structure A list is a data structure that stores data in memory for subsequent use Each list contains a predetermined number of cells and each cell has a matching numeric index that is used to access data You only need the required index to retrieve any of the data in the list whenever you want to use it Multiple items can be stored in a single variable using lists Square brackets are used to make a list with commas separating elements Lists can contain items of a single item type in most cases but they can also contain things of several different types To represent D and D grids like matrices lists can be nested with other lists Linked ListsLinked lists are a type of data structure that does not rely on physical data placement in memory Connected lists employ a reference mechanism instead of indexes or positions elements are stored in nodes that carry a pointer to the next node and so on until all nodes are linked This approach enables for quick item placement and removal without the need for reorganization SetsA set is a group of elements that are not in any particular sequence Every set element must be one of a kind and unchangeable Curly braces or the set function set  are used to make them They share several features with lists such as the ability to use in to see if they contain a specific item You must use set to construct an empty set as set creates an empty dictionary empty setprint set print my set DictionariesDictionaries are a collection of items that are not in any particular sequence They re data structures that let you map any key to any value When the key is known dictionaries are optimized to retrieve values empty dictionaryemoty dict dictionary with integer keysnum dict Vitalis Kandie get  is a helpful dictionary technique It works in the same way as indexing except if the key isn t found in the dictionary it returns another value by default None bird name screech color blue print Name person get name print color person get color value is not providedprint origin person get origin value is providedprint origin person get origin United Kingdom TuplesTuples are comparable to lists with the exception that they are immutable they cannot be changed They re made with parentheses We utilize indexing much as in lists to retrieve the values in the tuple A TypeError occurs when a value in a tuple is reassigned Tuples are quicker than lists but they can t be modified Empty tupleempty tuple print empty tuple Tuple having integersnum tuple print num tuple tuple with mixed datatypesmix tuple Hiya print mix tuple nested tuplenest tuple here print nest tuple indexingprint nest tuple here StackA stack is a linear data structure in which operations are carried out in a specific order The sequence could be LIFO Last In First Out or FILO First In Last Out First In Last Out There are numerous examples of stacks in the real world Consider the canteen where plates are heaped on top of one another The plate at the top is the first to be removed but the plate at the bottom is the one that stays in the stack the longest As a result it is easy to observe that it follows the LIFO Last In First Out FILO First In Last Out order To implement stack as seen in the illustration above we need two simple operations push It adds an element to the top of the stack pop It takes an element from the top of the stack and removes it Operations Adding This raises the size of the stack by adding items to it The addition occurs at the very top of the stack Deletion consists of two conditions first if no element is present in the stack the stack will underflow second if the stack contains items the topmost element will be removed It reduces the size of the stack Traversing entails going through each piece of the stack QueuesQueues and stacks are conceptually similar both are sequential structures but queues process elements in the order in which they were entered rather than the most recent element As a result queues are similar to FIFO First In First Out versions of stacks These serve as a request buffer keeping requests in the order they were received until they can be processed TreesTrees are another type of relation based data structure that is used to depict hierarchical hierarchies Nodes like linked lists contain both data and pointers indicating their relationship to other nodes Every tree has a root node that all other nodes branch off of All items right below it referred to as child nodes are referenced from the root This process repeats itself with each child node branching out into further child nodes GraphsGraphs are a type of relational data structure that can be used to store web like relationships In graphs each node or vertex has a title a value and a list of links called edges it has with other vertices Various Operations that can be performed on Data Structures Insertion Add a new data item to the specified data item collection Delete Removes an existing data item from a collection of data items Traversal Only access each data item once in order to process it Searching If the data item exists in the given collection of data items find its location Sorting entails arranging data items in a specific order such as ascending or descending for numerical data and dictionary order for alphanumeric data What are the Benefits of Data Structures You must understand Data Structures and how to execute various operations on them if you want to become a skilled programmer who creates good code ConclusionWow I bet you gained a lot of knowledge from this article In this fantastic series of Getting Started with Data Structures and Algorithms keep an eye out for more from my blog You can also read this article to learn more about dictionaries sets tuples and lists You can reach out to me on Twitter to learn more about any subject and I will respond Thank you for taking the time to read this Enjoy	2022-02-20 16:18:31
Apple	AppleInsider - Frontpage News	Kanye allegedly loses Apple Music deal, claims he dismissed $100M offer	https://appleinsider.com/articles/22/02/20/kanye-allegedly-loses-apple-music-deal-claims-he-dismissed-100m-offer?utm_medium=rss	Kanye allegedly loses Apple Music deal claims he dismissed M offerKanye West says he allegedly lost a sponsorship deal with Apple Music following his Donda Stem Player announcement and has claimed he turned down a M offer from the company Kanye West delivering a keynote at an Apple Store in On February Kanye West announced that Donda will only be available on the Stem Player for its February release In follow up social media posts it seems that he is starting to feel some of the effects of that decision Read more	2022-02-20 16:32:54
金融	◇◇　保険デイリーニュース　◇◇（損保担当者必携！）	保険デイリーニュース(02/21)	http://www.yanaharu.com/ins/?p=4841	交通事故	2022-02-20 16:04:12
ニュース	BBC News - Home	The Queen tests positive for Covid	https://www.bbc.co.uk/news/uk-60453566?at_medium=RSS&at_campaign=KARANGA	buckingham	2022-02-20 16:48:59
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ニュース	BBC News - Home	DUP MLA Christopher Stalford dies aged 39	https://www.bbc.co.uk/news/uk-northern-ireland-60451845?at_medium=RSS&at_campaign=KARANGA	deputy	2022-02-20 16:11:19
ニュース	BBC News - Home	Ukraine crisis: Russia keeps troops in Belarus amid Ukraine fears	https://www.bbc.co.uk/news/world-europe-60451955?at_medium=RSS&at_campaign=KARANGA	moscow	2022-02-20 16:22:32
ニュース	BBC News - Home	Ferry fire: Missing Euroferry Olympia passenger found alive off Corfu	https://www.bbc.co.uk/news/world-europe-60451869?at_medium=RSS&at_campaign=KARANGA	greece	2022-02-20 16:46:43
ニュース	BBC News - Home	Man Utd survive Leeds comeback in six-goal thriller	https://www.bbc.co.uk/sport/football/60364587?at_medium=RSS&at_campaign=KARANGA	elland	2022-02-20 16:27:11
ニュース	BBC News - Home	Ben Garuccio scores a scorpian-style goal for Western United	https://www.bbc.co.uk/sport/av/football/60455029?at_medium=RSS&at_campaign=KARANGA	Ben Garuccio scores a scorpian style goal for Western UnitedWestern United defender Ben Garuccio scores a potential goal of the year contender with a sensational overhead flick during an A League match against Western Sydney Wanderers	2022-02-20 16:05:13