--- title: Rearrange the Array | daily.dev description: A walkthrough of how to find the minimum number of operations to restore a permutation array to its original state. The key insight is that any permutation... canonical: https://daily.dev/posts/rearrange-the-array-qskslb1zw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Rearrange the Array | daily.dev og:description: A walkthrough of how to find the minimum number of operations to restore a permutation array to its original state. The key insight is that any permutation... og:url: https://daily.dev/posts/rearrange-the-array-qskslb1zw og:image: https://api.daily.dev/og/posts/QSKslb1zW.png og:image:alt: Rearrange the Array og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Rearrange the Array **[C\# Corner](https://daily.dev/sources/csharpcorner)** · 3 min read · 0 upvotes · 0 comments ## Summary A walkthrough of how to find the minimum number of operations to restore a permutation array to its original state. The key insight is that any permutation decomposes into disjoint cycles, and each cycle returns to its original position after exactly its length number of operations. The answer is the LCM of all cycle lengths, computed in O(n) time using a visited array and the Euclidean GCD algorithm. Java implementation with dry run, correctness proof, and complexity analysis are included. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Equalize All Prefix Sums](https://daily.dev/posts/equalize-all-prefix-sums-1vho3hqp8) · C\# Corner · 0 upvotes · 0 comments - [June 5, 2026](https://daily.dev/posts/june-5-2026-hajtsqyjs) · C\+\+ · 0 upvotes · 0 comments - [Implementing Frog River One in Java](https://daily.dev/posts/implementing-frog-river-one-in-java-ehofmu8em) · Baeldung · 0 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java), [#algorithms](https://daily.dev/tags/algorithms) [View this post on daily.dev](https://daily.dev/posts/rearrange-the-array-qskslb1zw) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Rearrange the Array","url":"https://daily.dev/posts/rearrange-the-array-qskslb1zw","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/rearrange-the-array-qskslb1zw"},"datePublished":"2026-07-13T05:05:59.861Z","dateModified":"2026-07-13T05:06:21.017Z","description":"A walkthrough of how to find the minimum number of operations to restore a permutation array to its original state. The key insight is that any permutation...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/81f698b062e81502c45df6b257ae3843?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/81f698b062e81502c45df6b257ae3843?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"C# Corner","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"C# Corner","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/ada2d584df6241748fc4e71878dc70a3","url":"https://daily.dev/sources/csharpcorner"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/rearrange-the-array-qskslb1zw","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"java,algorithms","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"C# Corner","item":"https://daily.dev/sources/csharpcorner"},{"@type":"ListItem","position":3,"name":"Rearrange the Array"}]} ```