Infosys
254 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Substring with Concatenation of All Words | Hard | 29.8% | TopicsHash TableStringSliding Window |
| 143. Reorder List | Medium | 29.8% | TopicsLinked ListTwo PointersStackRecursion |
| 1819. Number of Different Subsequences GCDs | Hard | 29.8% | TopicsArrayMathCountingNumber TheoryEuclidean AlgorithmGreatest Common Divisor |
| 525. Contiguous Array | Medium | 29.8% | TopicsArrayHash TablePrefix Sum |
| Evaluate Reverse Polish Notation | Medium | 29.8% | TopicsArrayMathStack |
| 84. Largest Rectangle in Histogram | Hard | 29.8% | TopicsArrayStackMonotonic StackRange Minimum/Maximum Query |
| 67. Add Binary | Easy | 29.8% | TopicsMathStringBit ManipulationSimulation |
| 3666. Minimum Operations to Equalize Binary String | Hard | 29.8% | TopicsMathStringBreadth-First SearchUnion-FindOrdered Set |
| Longest Valid Parentheses | Hard | 29.8% | TopicsStringDynamic ProgrammingStackBracket Sequences |
| 1498. Number of Subsequences That Satisfy the Given Sum Condition | Medium | 29.8% | TopicsArrayTwo PointersBinary SearchSorting |
| First Missing Positive | Hard | 29.8% | TopicsArrayHash Table |
| Odd Even Linked List | Medium | 29.8% | TopicsLinked List |
| 75. Sort Colors | Medium | 29.8% | TopicsArrayTwo PointersSortingQuicksortBubble Sort |
| 1376. Time Needed to Inform All Employees | Medium | 29.8% | TopicsTreeDepth-First SearchBreadth-First Search |
| Combine Two Tables | Easy | 29.8% | TopicsDatabase |
| 1768. Merge Strings Alternately | Easy | 29.8% | TopicsTwo PointersString |
| 2680. Maximum OR | Medium | 29.8% | TopicsArrayGreedyBit ManipulationPrefix Sum |
| 1752. Check if Array Is Sorted and Rotated | Easy | 29.8% | TopicsArray |
| 124. Binary Tree Maximum Path Sum | Hard | 29.8% | TopicsDynamic ProgrammingTreeDepth-First SearchBinary TreeDP on Trees |
| 763. Partition Labels | Medium | 29.8% | TopicsHash TableTwo PointersStringGreedy |
| 207. Course Schedule | Medium | 29.8% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| Basic Calculator | Hard | 29.8% | TopicsMathStringStackRecursion |
| 532. K-diff Pairs in an Array | Medium | 29.8% | TopicsArrayHash TableTwo PointersBinary SearchSorting |
| Count of Smaller Numbers After Self | Hard | 29.8% | TopicsArrayBinary SearchDivide and ConquerBinary Indexed TreeSegment TreeMerge SortOrdered SetTreap |
| 740. Delete and Earn | Medium | 29.8% | TopicsArrayHash TableDynamic Programming |
