Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 91 | Count Cells in Overlapping Horizontal and Vertical Substrings | Medium | ArrayStringRolling Hash |
| 92 | Count Collisions on a Road | Medium | StringStackSimulation |
| 93 | Count Common Words With One Occurrence | Easy | ArrayHash TableString |
| 94 | Count Complete Substrings | Hard | Hash TableStringSliding Window |
| 95 | Count Days Spent Together | Easy | MathString |
| 96 | Count Different Palindromic Subsequences | Hard | StringDynamic Programming |
| 97 | Count Items Matching a Rule | Easy | ArrayString |
| 98 | Count K-Reducible Numbers Less Than N | Hard | MathStringDynamic Programming |
| 99 | Count K-Subsequences of a String With Maximum Beauty | Hard | Hash TableMathString |
| 100 | Count Number of Balanced Permutations | Hard | MathStringDynamic Programming |
| 101 | Count Number of Homogenous Substrings | Medium | MathString |
| 102 | Count Number of Texts | Medium | Hash TableMathString |
| 103 | Count Numbers with Non-Decreasing Digits | Unknown | MathStringDynamic Programming |
| 104 | Count Odd Letters from Number | Easy | Hash TableStringSimulation |
| 105 | Count of Integers | Hard | MathStringDynamic Programming |
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