All companies
Epam Systems
16 Easy27 Medium3 Hard46 total
| No. | Problem | Difficulty | Frequency |
|---|---|---|---|
| 1 | Two Sum | Easy | |
| 3 | Longest Substring Without Repeating Characters | Medium | |
| 2033 | Minimum Operations to Make a Uni-Value Grid | Medium | |
| 5 | Longest Palindromic Substring | Medium | |
| 20 | Valid Parentheses | Easy | |
| 14 | Longest Common Prefix | Easy | |
| 283 | Move Zeroes | Easy | |
| 49 | Group Anagrams | Medium | |
| 88 | Merge Sorted Array | Easy | |
| 121 | Best Time to Buy and Sell Stock | Easy | |
| 242 | Valid Anagram | Easy | |
| 189 | Rotate Array | Medium | |
| 15 | 3Sum | Medium | |
| 42 | Trapping Rain Water | Hard | |
| 198 | House Robber | Medium | |
| 416 | Partition Equal Subset Sum | Medium | |
| 128 | Longest Consecutive Sequence | Medium | |
| 443 | String Compression | Medium | |
| 344 | Reverse String | Easy | |
| 387 | First Unique Character in a String | Easy | |
| 56 | Merge Intervals | Medium | |
| 22 | Generate Parentheses | Medium | |
| 345 | Reverse Vowels of a String | Easy | |
| 2 | Add Two Numbers | Medium | |
| 9 | Palindrome Number | Easy | |
| 1026 | Maximum Difference Between Node and Ancestor | Medium | |
| 7 | Reverse Integer | Medium | |
| 167 | Two Sum II - Input Array Is Sorted | Medium | |
| 50 | Pow(x, n) | Medium | |
| 182 | Duplicate Emails | Easy | |
| 1907 | Count Salary Categories | Medium | |
| 43 | Multiply Strings | Medium | |
| 53 | Maximum Subarray | Medium | |
| 151 | Reverse Words in a String | Medium | |
| 62 | Unique Paths | Medium | |
| 72 | Edit Distance | Medium | |
| 13 | Roman to Integer | Easy | |
| 2620 | Counter | Easy | |
| 206 | Reverse Linked List | Easy | |
| 451 | Sort Characters By Frequency | Medium | |
| 347 | Top K Frequent Elements | Medium | |
| 215 | Kth Largest Element in an Array | Medium | |
| 41 | First Missing Positive | Hard | |
| 4 | Median of Two Sorted Arrays | Hard | |
| 21 | Merge Two Sorted Lists | Easy | |
| 146 | LRU Cache | Medium |