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‎.gitattributes‎

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# Auto detect text files and perform LF normalization
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* text=auto

‎.gitignore‎

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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lerna-debug.log*
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.pnpm-debug.log*
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# Diagnostic reports (https://nodejs.org/api/report.html)
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report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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*.lcov
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# Bower dependency directory (https://bower.io/)
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bower_components
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (https://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules/
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jspm_packages/
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# Snowpack dependency directory (https://snowpack.dev/)
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web_modules/
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# TypeScript cache
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*.tsbuildinfo
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# Optional npm cache directory
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.npm
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# Optional eslint cache
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.eslintcache
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# Optional stylelint cache
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.stylelintcache
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# Microbundle cache
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.rpt2_cache/
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.rts2_cache_cjs/
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.rts2_cache_es/
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.rts2_cache_umd/
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variable files
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.env
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.env.development.local
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.env.test.local
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.env.production.local
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.env.local
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# parcel-bundler cache (https://parceljs.org/)
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.cache
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.parcel-cache
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# Next.js build output
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.next
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out
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# Nuxt.js build / generate output
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.nuxt
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dist
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# Gatsby files
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.cache/
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# Comment in the public line in if your project uses Gatsby and not Next.js
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# https://nextjs.org/blog/next-9-1#public-directory-support
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# public
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# vuepress build output
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.vuepress/dist
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# vuepress v2.x temp and cache directory
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.temp
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.cache
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# Docusaurus cache and generated files
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.docusaurus
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# Serverless directories
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.serverless/
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# FuseBox cache
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.fusebox/
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# DynamoDB Local files
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.dynamodb/
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# TernJS port file
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.tern-port
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# Stores VSCode versions used for testing VSCode extensions
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.vscode-test
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# yarn v2
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.yarn/cache
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.yarn/unplugged
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.yarn/build-state.yml
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.yarn/install-state.gz
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.pnp.*

‎LICENSE‎

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MIT License
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Copyright (c) 2025 Aman Pareek
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md‎

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# JavaScript LeetCode Solutions
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This repository contains solutions to 100+ LeetCode problems written in **JavaScript**.
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Each problem is solved in multiple ways — from brute force to optimized techniques.
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The goal is to demonstrate different approaches and help improve problem-solving skills.
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All solutions have been tested using a custom script. Most of them should work correctly,
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though there may be occasional breakages depending on edge cases or updates on LeetCode's platform.
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> 🚫 This project does not currently accept external contributions, as all content is generated dynamically from a MongoDB database.
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## 📄 Problem List (110 problems)
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| # | Title | Link |
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|---|-------|------|
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| 1 | Check if Grid Satisfies Conditions | [Link](./solutions/check-if-grid-satisfies-conditions) |
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| 2 | Detect Capital | [Link](./solutions/detect-capital) |
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| 3 | Get first positive integer in array | [Link](./solutions/first-positive-integer-in-array) |
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| 4 | Additive Number | [Link](./solutions/additive-number) |
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| 5 | Array Partition | [Link](./solutions/array-partition) |
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| 6 | Array of strings containing numbers | [Link](./solutions/array-of-strings-containing-numbers) |
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| 7 | Can Place Flowers | [Link](./solutions/can-place-flowers) |
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| 8 | Check if a String Contains Only Digits | [Link](./solutions/check-if-a-string-contains-only-digits) |
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| 9 | Check if a String Contains Only Uppercase Letters | [Link](./solutions/check-if-a-string-contains-only-uppercase-letters) |
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| 10 | Check if a String is a Palindrome | [Link](./solutions/check-if-a-string-is-a-palindrome) |
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| 11 | Check if an Array is Sorted | [Link](./solutions/check-if-an-array-is-sorted) |
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| 12 | Climbing Stairs | [Link](./solutions/climbing-stairs) |
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| 13 | Contains Duplicate II | [Link](./solutions/contains-duplicate-ii) |
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| 14 | Contains Duplicate elements in array | [Link](./solutions/contains-duplicate-elements-in-array) |
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| 15 | Contiguous Array | [Link](./solutions/contiguous-array) |
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| 16 | Convert String to Title Case | [Link](./solutions/convert-string-to-title-case) |
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| 17 | Count Anagrams | [Link](./solutions/count-anagrams) |
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| 18 | Count Complete Substrings | [Link](./solutions/count-complete-substrings) |
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| 19 | Count Number of Vowels in a String | [Link](./solutions/count-number-of-vowels-in-a-string) |
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| 20 | Count and Say | [Link](./solutions/count-and-say) |
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| 21 | Count primes | [Link](./solutions/count-primes) |
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| 22 | Count the Number of Special Characters I | [Link](./solutions/count-the-number-of-special-characters-i) |
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| 23 | Defuse the Bomb | [Link](./solutions/defuse-the-bomb) |
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| 24 | Degree of an Array | [Link](./solutions/degree-of-an-array) |
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| 25 | Distribute Candies | [Link](./solutions/distribute-candies) |
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| 26 | Extract phone numbers from a block of text | [Link](./solutions/extract-phone-numbers-from-a-block-of-text) |
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| 27 | Extract version numbers from strings | [Link](./solutions/extract-version-numbers-from-strings) |
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| 28 | Factorial of a number | [Link](./solutions/factorial-of-a-number) |
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| 29 | Fibonacci Number | [Link](./solutions/fibonacci-number) |
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| 30 | Find Length of the Last Word | [Link](./solutions/find-length-of-the-last-word) |
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| 31 | Find Smallest Letter Greater Than Target | [Link](./solutions/find-smallest-letter-greater-than-target) |
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| 32 | Find Winner on a Tic Tac Toe Game | [Link](./solutions/find-winner-on-a-tic-tac-toe-game) |
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| 33 | Find and Remove element from array | [Link](./solutions/find-and-remove-element-from-array) |
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| 34 | Find second smallest and second largest element in array | [Link](./solutions/find-second-smallest-and-second-largest-element-in-array) |
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| 35 | Find the First Unique Character in a String | [Link](./solutions/first-unique-character-in-a-string) |
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| 36 | Find the Longest Word in a Sentence | [Link](./solutions/find-the-longest-word-in-a-sentence) |
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| 37 | Find the largest number in array | [Link](./solutions/find-the-largest-number-in-array) |
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| 38 | Finding the Resultant Array After Removing Anagrams | [Link](./solutions/finding-the-resultant-array-after-removing-anagrams) |
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| 39 | Flatten array | [Link](./solutions/flat-array) |
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| 40 | Generate Fibonacci Sequence | [Link](./solutions/generate-fibonacci-sequence) |
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| 41 | Generate Parentheses | [Link](./solutions/generate-parentheses) |
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| 42 | Group Anagrams | [Link](./solutions/group-anagrams) |
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| 43 | Integer to Roman | [Link](./solutions/integer-to-roman) |
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| 44 | Intersection of Two Arrays | [Link](./solutions/intersection-of-two-arrays) |
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| 45 | Intersection of Two Arrays II | [Link](./solutions/intersection-of-two-arrays-ii) |
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| 46 | Is array equal | [Link](./solutions/is-two-array-equal) |
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| 47 | Isomorphic Strings | [Link](./solutions/isomorphic-strings) |
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| 48 | Largest 3-Same-Digit Number in String | [Link](./solutions/largest-3-same-digit-number-in-string) |
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| 49 | Largest Odd Number in String | [Link](./solutions/largest-odd-number-in-string) |
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| 50 | Leaders in an Array | [Link](./solutions/leaders-in-an-array) |
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| 51 | Left Rotate Array in JavaScript | [Link](./solutions/left-rotate-array) |
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| 52 | Length of the Longest Palindrome | [Link](./solutions/length-of-the-longest-palindrome) |
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| 53 | Longest Common Prefix | [Link](./solutions/longest-common-prefix) |
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| 54 | Longest Harmonious Subsequence | [Link](./solutions/longest-harmonious-subsequence) |
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| 55 | Longest Palindromic Substring | [Link](./solutions/longest-palindromic-substring) |
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| 56 | Longest Substring with At Least K Repeating Characters | [Link](./solutions/longest-substring-with-at-least-k-repeating-characters) |
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| 57 | Longest Valid Parentheses | [Link](./solutions/longest-valid-parentheses) |
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| 58 | Majority Element | [Link](./solutions/majority-element) |
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| 59 | Match hex color codes | [Link](./solutions/match-hex-color-codes) |
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| 60 | Max Consecutive Ones | [Link](./solutions/max-consecutive-ones) |
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| 61 | Maximal Square | [Link](./solutions/maximal-square) |
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| 62 | Maximal rectangle | [Link](./solutions/maximal-rectangle) |
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| 63 | Maximum Average Subarray I | [Link](./solutions/maximum-average-subarray-i) |
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| 64 | Maximum Product Subarray | [Link](./solutions/maximum-product-subarray) |
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| 65 | Maximum Product of Three Numbers | [Link](./solutions/maximum-product-of-three-numbers) |
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| 66 | Maximum Product of Word Lengths | [Link](./solutions/maximum-product-of-word-lengths) |
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| 67 | Maximum Score From Removing Substrings | [Link](./solutions/maximum-score-from-removing-substrings) |
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| 68 | Maximum Subarray Sum | [Link](./solutions/maximum-subarray-sum) |
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| 69 | Maximum Sum Circular Subarray | [Link](./solutions/maximum-sum-circular-subarray) |
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| 70 | Min Cost Climbing Stairs | [Link](./solutions/min-cost-climbing-stairs) |
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| 71 | Minimum Cost of Buying Candies With Discount | [Link](./solutions/minimum-cost-of-buying-candies-with-discount) |
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| 72 | Minimum Index Sum of Two Lists | [Link](./solutions/minimum-index-sum-of-two-lists) |
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| 73 | Move All Zeros to the End of an Array | [Link](./solutions/move-all-zeros-to-the-end-of-an-array) |
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| 74 | Multiply Strings | [Link](./solutions/multiply-strings) |
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| 75 | Number of Students Unable to Eat Lunch | [Link](./solutions/number-of-students-unable-to-eat-lunch) |
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| 76 | Number of Substrings Containing All Three Characters | [Link](./solutions/number-of-substrings-containing-all-three-characters) |
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| 77 | Pascal's Triangle | [Link](./solutions/pascals-triangle) |
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| 78 | Pascal's Triangle II | [Link](./solutions/pascals-triangle-ii) |
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| 79 | Path with Maximum Gold | [Link](./solutions/path-with-maximum-gold) |
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| 80 | Plus One | [Link](./solutions/plus-one) |
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| 81 | Product of array except self | [Link](./solutions/product-of-array-except-self) |
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| 82 | Relative Ranks | [Link](./solutions/relative-ranks) |
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| 83 | Remove All Falsy Values from an Array | [Link](./solutions/remove-all-falsy-values-from-an-array) |
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| 84 | Remove Duplicate Letters | [Link](./solutions/remove-duplicate-letters) |
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| 85 | Remove Outermost Parentheses | [Link](./solutions/remove-outermost-parentheses) |
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| 86 | Remove the Last Element from an Array | [Link](./solutions/remove-the-last-element-from-an-array) |
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| 87 | Replace Words | [Link](./solutions/replace-words) |
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| 88 | Reverse Every Word in a String | [Link](./solutions/reverse-every-word-in-a-string) |
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| 89 | Reverse String | [Link](./solutions/reverse-string) |
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| 90 | Reverse Vowels of a String | [Link](./solutions/reverse-vowels-of-a-string) |
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| 91 | Reverse the Odd-Length Words in a String | [Link](./solutions/reverse-the-odd-length-words-in-a-string) |
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| 92 | Reverse words in a string | [Link](./solutions/reverse-words-in-a-string) |
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| 93 | Right Rotate Array in JavaScript | [Link](./solutions/right-rotate-array-in-javascript) |
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| 94 | Roman to Integer | [Link](./solutions/roman-to-integer) |
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| 95 | Search Insert Position | [Link](./solutions/search-insert-position) |
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| 96 | Set Matrix Zeroes | [Link](./solutions/set-matrix-zeroes) |
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| 97 | Shortest Palindrome | [Link](./solutions/shortest-palindrome) |
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| 98 | Single Number | [Link](./solutions/single-number) |
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| 99 | Sort Characters By Frequency | [Link](./solutions/sort-characters-by-frequency-leetcode) |
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| 100 | Sort Colors | [Link](./solutions/sort-colors) |
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| 101 | Split a String into a Fibonacci Sequence | [Link](./solutions/split-a-string-into-a-fibonacci-sequence) |
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| 102 | Sum of Digits | [Link](./solutions/sum-of-digits) |
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| 103 | Three Consecutive Odds | [Link](./solutions/three-consecutive-odds) |
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| 104 | Time Needed to Buy Tickets | [Link](./solutions/time-needed-to-buy-tickets) |
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| 105 | Two Sum | [Link](./solutions/two-sum) |
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| 106 | Union of Two Sorted Arrays | [Link](./solutions/union-of-two-sorted-arrays) |
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| 107 | Valid Anagram | [Link](./solutions/valid-anagram) |
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| 108 | Validate Email Address | [Link](./solutions/regex-validate-email-addresses) |
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| 109 | Word Pattern | [Link](./solutions/word-pattern) |
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| 110 | check whether one string is a rotation of another | [Link](./solutions/check-one-string-is-rotation-of-another) |
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## 📄 License
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This project is licensed under the MIT License – see the [LICENSE](./LICENSE) file for details.

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