String Coding Problems

Learn string processing and pattern matching

803
Total Problems
228
Easy
390
Medium
177
Hard
Start Practicing
"Hello"

Master DSA Topics - March, 2026

Practice problems across 75+ categories

String Coding Problems

Practice problems frequently asked at String 803 problems | 228 Easy | 390 Medium | 177 Hard

# Problem Difficulty Topics
61 Check if Numbers Are Ascending in a Sentence Easy
String
62 Check if One String Swap Can Make Strings Equal Easy
Hash TableStringCounting
63 Check If String Is a Prefix of Array Easy
ArrayTwo PointersString
64 Check if String Is Decomposable Into Value-Equal Substrings Easy
String
65 Check If String Is Transformable With Substring Sort Operations Hard
StringGreedySorting
66 Check if Strings Can be Made Equal With Operations I Easy
String
67 Check if Strings Can be Made Equal With Operations II Medium
Hash TableStringSorting
68 Check if the Sentence Is Pangram Easy
Hash TableString
69 Check if Two Chessboard Squares Have the Same Color Easy
MathString
70 Check If Two String Arrays are Equivalent Easy
ArrayString
71 Check if Word Equals Summation of Two Words Easy
String
72 Check If Word Is Valid After Substitutions Medium
StringStack
73 Check Whether Two Strings are Almost Equivalent Easy
Hash TableStringCounting
74 Circular Sentence Easy
String
75 Clear Digits Easy
StringStackSimulation
Showing 61-75 of 803
1 ... 3 4 5 6 7 ... 54

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public class MyFirstJavaProgram { Edit & Run

   /* This is my first java program.
    * This will print 'Hello, World!' as the output
    */

   public static void main(String []args) {
      System.out.println("Hello, World!"); // prints
   }
}

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