String Coding Problems

Learn string processing and pattern matching

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

Master DSA Topics - April, 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 Number of Divisible Substrings Medium
Hash TableStringCounting
542 Number of Equal Count Substrings Medium
Hash TableStringSliding Window
543 Number of Good Ways to Split a String Medium
Hash TableStringDynamic Programming
544 Number of Laser Beams in a Bank Medium
ArrayMathString
545 Number of Lines To Write String Easy
ArrayString
546 Number of Matching Subsequences Medium
ArrayHash TableString
547 Number of Pairs of Strings With Concatenation Equal to Target Medium
ArrayHash TableString
548 Number of Same-End Substrings Medium
ArrayHash TableString
549 Number of Segments in a String Easy
String
550 Number of Senior Citizens Easy
ArrayString
551 Number of Steps to Reduce a Number in Binary Representation to One Medium
StringBit ManipulationSimulation
552 Number of Strings That Appear as Substrings in Word Easy
ArrayString
553 Number of Substrings Containing All Three Characters Medium
Hash TableStringSliding Window
554 Number of Substrings With Fixed Ratio Medium
Hash TableMathString
555 Number of Substrings With Only 1s Medium
MathString
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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