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All Problems\n\n## Codewars:\n\n### Easy Problems\n\n- https://www.codewars.com/kata/5ce9c1000bab0b001134f5af\n\n---\n\n## Leetcode\n\n### Easy Problems\n\n- https://leetcode.com/problems/length-of-last-word/\n- https://leetcode.com/problems/fizz-buzz/description/\n- https://leetcode.com/problems/binary-search/\n- XOR: https://leetcode.com/problems/single-number/description/\n- https://leetcode.com/problems/count-subarrays-of-length-three-with-a-condition/description/?envType=daily-question\u0026envId=2025-04-27\n- https://leetcode.com/problems/palindrome-number/description/\n- Log(n^2) https://leetcode.com/problems/two-sum/description/\n- HashMap: https://leetcode.com/problems/two-sum/description/\n- Two Pointers: https://leetcode.com/problems/move-zeroes/description/\n- One Pointer: https://leetcode.com/problems/best-time-to-buy-and-sell-stock/description/\n- https://leetcode.com/problems/ransom-note/\n- https://leetcode.com/problems/contains-duplicate/\n- https://leetcode.com/problems/contains-duplicate-ii/description/\n- https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/description/\n- https://leetcode.com/problems/three-consecutive-odds/description/?envType=daily-question\u0026envId=2025-05-11\n- String Problem: https://leetcode.com/problems/is-subsequence/description/\n- https://leetcode.com/problems/remove-duplicates-from-sorted-array/description/\n- https://leetcode.com/problems/valid-palindrome/\n- https://leetcode.com/problems/merge-sorted-array/\n- https://leetcode.com/problems/valid-parentheses/description/\n\n### Medium Problems\n\n- https://leetcode.com/problems/search-in-rotated-sorted-array/description/\n- https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/description/\n- Factorial Trailing Zeroes: https://leetcode.com/problems/factorial-trailing-zeroes/submissions/\n- https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/\n- https://leetcode.com/problems/rotate-array/description/\n- https://leetcode.com/problems/jump-game/description/\n- https://leetcode.com/problems/product-of-array-except-self/\n- Hash Table: https://leetcode.com/problems/sequential-digits/description/\n- Hash Table: https://leetcode.com/problems/find-all-duplicates-in-an-array/\n- https://leetcode.com/problems/minimum-equal-sum-of-two-arrays-after-replacing-zeros/description/?envType=daily-question\u0026envId=2025-05-10\n- Bad Question : I don't recommend to solve: https://leetcode.com/problems/next-permutation/description/\n- https://leetcode.com/problems/subarray-product-less-than-k/description/\n- https://leetcode.com/problems/k-diff-pairs-in-an-array/description/\n- Two Pointers: with new idea: https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/description/\n- https://leetcode.com/problems/sort-colors/description/\n- Medium but Very Hard: https://leetcode.com/problems/3sum/\n- https://leetcode.com/problems/asteroid-collision/\n- https://leetcode.com/problems/decode-string/ \n\n### Hard Problems\n\n- https://leetcode.com/problems/first-missing-positive/description/\n- Very Hard with idea: https://leetcode.com/problems/longest-valid-parentheses/description/\n\n### Topics\n\n- XOR\n- Binary Search\n- Rotated Sorted Array\n- Palindrome Number\n- Factorial\n- **Hash Map** (DS)\n- 2 Pointers (Two Pointers)\n  - left and right pointers\n  - Sliding window\n- Prefix sum \u0026\u0026\u0026 Suffix sum\n- Prefix product \u0026\u0026\u0026 Suffix product\n- Hash Table (DS)\n- Mark Indices --\u003e By negative value\n- Sliding Window\n- Stack (DS)\n\n### Algorithms\n\n- Greedy Algorithm\n\n### Notes:\n\n- Map In Dart (Hash Map ---- Linked Hash Map ---- Splay Tree Map)\n- Hash Map (Not Ordered) -- Hash Table (Ordered)\n- Hash Table\n\n  A Hash table is defined as a data structure used to insert, look up, and remove key-value pairs quickly.\n  It operates on the hashing concept,\n  where each key is translated by a hash function into a distinct index in an array.\n  The index functions as a storage location for the matching value.\n  In simple words, it maps the keys with the value.\n\n- Find Sum of 2 Numbers in sorted List\n  1. Brute Force (Bad)\n  2. Two Pointers\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fadeldaniel%2Fleetcode-problem-solving-in-dart","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fadeldaniel%2Fleetcode-problem-solving-in-dart","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fadeldaniel%2Fleetcode-problem-solving-in-dart/lists"}