String Coding Problems

Learn string processing and pattern matching

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

Master DSA Topics - January, 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
541 Numbers At Most N Given Digit Set Hard
ArrayMathString
542 Occurrences After Bigram Easy
String
543 Odd String Difference Easy
ArrayHash TableString
544 One Edit Distance Medium
Two PointersString
545 Ones and Zeroes Medium
ArrayStringDynamic Programming
546 Open the Lock Medium
ArrayHash TableString
547 Optimal Partition of String Medium
Hash TableStringGreedy
548 Orderly Queue Hard
MathStringSorting
549 Output Contest Matches Medium
StringRecursionSimulation
550 Palindrome Pairs Hard
ArrayHash TableString
551 Palindrome Partitioning Medium
StringDynamic ProgrammingBacktracking
552 Palindrome Partitioning II Hard
StringDynamic Programming
553 Palindrome Partitioning III Hard
StringDynamic Programming
554 Palindrome Partitioning IV Hard
StringDynamic Programming
555 Palindrome Permutation Easy
Hash TableStringBit Manipulation
Showing 541-555 of 803
1 ... 35 36 37 38 39 ... 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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