Practice problems across 75+ categories
Practice problems frequently asked at Hash Table • 719 problems | 168 Easy | 418 Medium | 127 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 106 | Count of Sub-Multisets With Bounded Sum | Hard | ArrayHash TableDynamic Programming |
| 107 | Count of Substrings Containing Every Vowel and K Consonants I | Medium | Hash TableStringSliding Window |
| 108 | Count of Substrings Containing Every Vowel and K Consonants II | Medium | Hash TableStringSliding Window |
| 109 | Count Pairs of Equal Substrings With Minimum Difference | Medium | Hash TableStringGreedy |
| 110 | Count Pairs Of Nodes | Hard | ArrayHash TableTwo Pointers |
| 111 | Count Pairs of Points With Distance k | Medium | ArrayHash TableBit Manipulation |
| 112 | Count Pairs Of Similar Strings | Easy | ArrayHash TableString |
| 113 | Count Pairs That Form a Complete Day I | Easy | ArrayHash TableCounting |
| 114 | Count Pairs That Form a Complete Day II | Medium | ArrayHash TableCounting |
| 115 | Count Special Quadruplets | Easy | ArrayHash TableEnumeration |
| 116 | Count Special Subsequences | Medium | ArrayHash TableMath |
| 117 | Count Special Triplets | Medium | ArrayHash TableCounting |
| 118 | Count Subarrays With Median K | Hard | ArrayHash TablePrefix Sum |
| 119 | Count Subarrays With More Ones Than Zeros | Medium | ArrayHash TableBinary Search |
| 120 | Count Substrings That Can Be Rearranged to Contain a String I | Medium | Hash TableStringSliding Window |
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