Practice problems across 75+ categories
Practice problems frequently asked at Counting • 166 problems | 58 Easy | 87 Medium | 20 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 16 | Count Almost Equal Pairs I | Medium | ArrayHash TableSorting |
| 17 | Count Almost Equal Pairs II | Hard | ArrayHash TableSorting |
| 18 | Count Anagrams | Hard | Hash TableMathString |
| 19 | Count Common Words With One Occurrence | Easy | ArrayHash TableString |
| 20 | Count Elements With Maximum Frequency | Easy | ArrayHash TableCounting |
| 21 | Count Elements With Strictly Smaller and Greater Elements | Easy | ArraySortingCounting |
| 22 | Count Nice Pairs in an Array | Medium | ArrayHash TableMath |
| 23 | Count Number of Bad Pairs | Medium | ArrayHash TableMath |
| 24 | Count Number of Distinct Integers After Reverse Operations | Medium | ArrayHash TableMath |
| 25 | Count Number of Pairs With Absolute Difference K | Easy | ArrayHash TableCounting |
| 26 | Count Odd Letters from Number | Easy | Hash TableStringSimulation |
| 27 | Count Pairs Of Nodes | Hard | ArrayHash TableTwo Pointers |
| 28 | Count Pairs Of Similar Strings | Easy | ArrayHash TableString |
| 29 | Count Pairs That Form a Complete Day I | Easy | ArrayHash TableCounting |
| 30 | Count Pairs That Form a Complete Day II | Medium | ArrayHash TableCounting |
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