All companies
Visa
32 Easy92 Medium21 Hard145 total
| No. | Problem | Difficulty | Frequency |
|---|---|---|---|
| 1 | Two Sum | Easy | |
| 3 | Longest Substring Without Repeating Characters | Medium | |
| 68 | Text Justification | Hard | |
| 3046 | Split the Array | Easy | |
| 1861 | Rotating the Box | Medium | |
| 3459 | Length of Longest V-Shaped Diagonal Segment | Hard | |
| 15 | 3Sum | Medium | |
| 121 | Best Time to Buy and Sell Stock | Easy | |
| 1389 | Create Target Array in the Given Order | Easy | |
| 146 | LRU Cache | Medium | |
| 3043 | Find the Length of the Longest Common Prefix | Medium | |
| 3071 | Minimum Operations to Write the Letter Y on a Grid | Medium | |
| 5 | Longest Palindromic Substring | Medium | |
| 20 | Valid Parentheses | Easy | |
| 42 | Trapping Rain Water | Hard | |
| 49 | Group Anagrams | Medium | |
| 53 | Maximum Subarray | Medium | |
| 1025 | Divisor Game | Easy | |
| 2049 | Count Nodes With the Highest Score | Medium | |
| 2078 | Two Furthest Houses With Different Colors | Easy | |
| 2136 | Earliest Possible Day of Full Bloom | Hard | |
| 3078 | Match Alphanumerical Pattern in Matrix I | Medium | |
| 1353 | Maximum Number of Events That Can Be Attended | Medium | |
| 2451 | Odd String Difference | Easy | |
| 3161 | Block Placement Queries | Hard | |
| 200 | Number of Islands | Medium | |
| 71 | Simplify Path | Medium | |
| 2672 | Number of Adjacent Elements With the Same Color | Medium | |
| 2768 | Number of Black Blocks | Medium | |
| 56 | Merge Intervals | Medium | |
| 84 | Largest Rectangle in Histogram | Hard | |
| 2964 | Number of Divisible Triplet Sums | Medium | |
| 3915 | Maximum Sum of Alternating Subsequence With Distance at Least K | Hard | |
| 14 | Longest Common Prefix | Easy | |
| 286 | Walls and Gates | Medium | |
| 54 | Spiral Matrix | Medium | |
| 539 | Minimum Time Difference | Medium | |
| 206 | Reverse Linked List | Easy | |
| 2817 | Minimum Absolute Difference Between Elements With Constraint | Medium | |
| 3552 | Grid Teleportation Traversal | Medium | |
| 560 | Subarray Sum Equals K | Medium | |
| 48 | Rotate Image | Medium | |
| 2491 | Divide Players Into Teams of Equal Skill | Medium | |
| 526 | Beautiful Arrangement | Medium | |
| 2484 | Count Palindromic Subsequences | Hard | |
| 636 | Exclusive Time of Functions | Medium | |
| 207 | Course Schedule | Medium | |
| 1497 | Check If Array Pairs Are Divisible by k | Medium | |
| 543 | Diameter of Binary Tree | Easy | |
| 661 | Image Smoother | Easy | |
| 1438 | Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | Medium | |
| 347 | Top K Frequent Elements | Medium | |
| 127 | Word Ladder | Hard | |
| 93 | Restore IP Addresses | Medium | |
| 11 | Container With Most Water | Medium | |
| 723 | Candy Crush | Medium | |
| 21 | Merge Two Sorted Lists | Easy | |
| 792 | Number of Matching Subsequences | Medium | |
| 110 | Balanced Binary Tree | Easy | |
| 295 | Find Median from Data Stream | Hard | |
| 32 | Longest Valid Parentheses | Hard | |
| 122 | Best Time to Buy and Sell Stock II | Medium | |
| 75 | Sort Colors | Medium | |
| 238 | Product of Array Except Self | Medium | |
| 202 | Happy Number | Easy | |
| 1314 | Matrix Block Sum | Medium | |
| 134 | Gas Station | Medium | |
| 67 | Add Binary | Easy | |
| 415 | Add Strings | Easy | |
| 3019 | Number of Changing Keys | Easy | |
| 3652 | Best Time to Buy and Sell Stock using Strategy | Medium | |
| 3651 | Minimum Cost Path with Teleportations | Hard | |
| 3649 | Number of Perfect Pairs | Medium | |
| 1648 | Sell Diminishing-Valued Colored Balls | Medium | |
| 131 | Palindrome Partitioning | Medium | |
| 2680 | Maximum OR | Medium | |
| 1963 | Minimum Number of Swaps to Make the String Balanced | Medium | |
| 2466 | Count Ways To Build Good Strings | Medium | |
| 66 | Plus One | Easy | |
| 151 | Reverse Words in a String | Medium | |
| 739 | Daily Temperatures | Medium | |
| 2593 | Find Score of an Array After Marking All Elements | Medium | |
| 25 | Reverse Nodes in k-Group | Hard | |
| 189 | Rotate Array | Medium | |
| 242 | Valid Anagram | Easy | |
| 123 | Best Time to Buy and Sell Stock III | Hard | |
| 162 | Find Peak Element | Medium | |
| 239 | Sliding Window Maximum | Hard | |
| 416 | Partition Equal Subset Sum | Medium | |
| 1876 | Substrings of Size Three with Distinct Characters | Easy | |
| 3034 | Number of Subarrays That Match a Pattern I | Medium | |
| 213 | House Robber II | Medium | |
| 72 | Edit Distance | Medium | |
| 2021 | Brightest Position on Street | Medium | |
| 217 | Contains Duplicate | Easy | |
| 129 | Sum Root to Leaf Numbers | Medium | |
| 460 | LFU Cache | Hard | |
| 300 | Longest Increasing Subsequence | Medium | |
| 451 | Sort Characters By Frequency | Medium | |
| 1752 | Check if Array Is Sorted and Rotated | Easy | |
| 215 | Kth Largest Element in an Array | Medium | |
| 345 | Reverse Vowels of a String | Easy | |
| 680 | Valid Palindrome II | Easy | |
| 167 | Two Sum II - Input Array Is Sorted | Medium | |
| 264 | Ugly Number II | Medium | |
| 62 | Unique Paths | Medium | |
| 1743 | Restore the Array From Adjacent Pairs | Medium | |
| 17 | Letter Combinations of a Phone Number | Medium | |
| 332 | Reconstruct Itinerary | Hard | |
| 2502 | Design Memory Allocator | Medium | |
| 1046 | Last Stone Weight | Easy | |
| 3433 | Count Mentions Per User | Medium | |
| 85 | Maximal Rectangle | Hard | |
| 258 | Add Digits | Easy | |
| 135 | Candy | Hard | |
| 2544 | Alternating Digit Sum | Easy | |
| 503 | Next Greater Element II | Medium | |
| 79 | Word Search | Medium | |
| 88 | Merge Sorted Array | Easy | |
| 994 | Rotting Oranges | Medium | |
| 974 | Subarray Sums Divisible by K | Medium | |
| 128 | Longest Consecutive Sequence | Medium | |
| 125 | Valid Palindrome | Easy | |
| 387 | First Unique Character in a String | Easy | |
| 1922 | Count Good Numbers | Medium | |
| 846 | Hand of Straights | Medium | |
| 435 | Non-overlapping Intervals | Medium | |
| 2530 | Maximal Score After Applying K Operations | Medium | |
| 733 | Flood Fill | Easy | |
| 253 | Meeting Rooms II | Medium | |
| 139 | Word Break | Medium | |
| 140 | Word Break II | Hard | |
| 3035 | Maximum Palindromes After Operations | Medium | |
| 1696 | Jump Game VI | Medium | |
| 1631 | Path With Minimum Effort | Medium | |
| 1011 | Capacity To Ship Packages Within D Days | Medium | |
| 1529 | Minimum Suffix Flips | Medium | |
| 1143 | Longest Common Subsequence | Medium | |
| 2439 | Minimize Maximum of Array | Medium | |
| 102 | Binary Tree Level Order Traversal | Medium | |
| 212 | Word Search II | Hard | |
| 2583 | Kth Largest Sum in a Binary Tree | Medium | |
| 2771 | Longest Non-decreasing Subarray From Two Arrays | Medium | |
| 33 | Search in Rotated Sorted Array | Medium | |
| 1930 | Unique Length-3 Palindromic Subsequences | Medium |
