Tcs
264 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1. Two Sum | Easy | 100% | TopicsArrayHash Table |
| 5. Longest Palindromic Substring | Medium | 91.5% | TopicsTwo PointersStringDynamic ProgrammingManacher |
| 9. Palindrome Number | Easy | 89.2% | TopicsMath |
| 53. Maximum Subarray | Medium | 84.5% | TopicsArrayDivide and ConquerDynamic Programming |
| 11. Container With Most Water | Medium | 82.1% | TopicsArrayTwo PointersGreedy |
| 283. Move Zeroes | Easy | 80.4% | TopicsArrayTwo Pointers |
| 121. Best Time to Buy and Sell Stock | Easy | 79.5% | TopicsArrayDynamic Programming |
| 242. Valid Anagram | Easy | 77.5% | TopicsHash TableStringSorting |
| Fibonacci Number | Easy | 76.4% | TopicsMathDynamic ProgrammingRecursionMemoization |
| 20. Valid Parentheses | Easy | 75.3% | TopicsStringStackBracket Sequences |
| 1331. Rank Transform of an Array | Easy | 75.3% | TopicsArrayHash TableSorting |
| Second Highest Salary | Medium | 74.1% | TopicsDatabase |
| 3. Longest Substring Without Repeating Characters | Medium | 72.9% | TopicsHash TableStringSliding Window |
| 13. Roman to Integer | Easy | 72.9% | TopicsHash TableMathString |
| 14. Longest Common Prefix | Easy | 72.9% | TopicsArrayStringTrie |
| 3Sum | Medium | 72.9% | TopicsArrayTwo PointersSorting |
| 75. Sort Colors | Medium | 72.9% | TopicsArrayTwo PointersSortingQuicksortBubble Sort |
| 88. Merge Sorted Array | Easy | 72.9% | TopicsArrayTwo PointersSorting |
| First Missing Positive | Hard | 72.9% | TopicsArrayHash Table |
| 136. Single Number | Easy | 71.6% | TopicsArrayBit Manipulation |
| 169. Majority Element | Easy | 71.6% | TopicsArrayHash TableDivide and ConquerSortingCountingBoyer–Moore Majority Vote Algorithm |
| Remove Duplicates from Sorted Array | Easy | 70.1% | TopicsArrayTwo Pointers |
| 344. Reverse String | Easy | 70.1% | TopicsTwo PointersString |
| 12. Integer to Roman | Medium | 70.1% | TopicsHash TableMathString |
| 54. Spiral Matrix | Medium | 68.6% | TopicsArrayMatrixSimulation |
