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
421 Maximum Product of the Length of Two Palindromic Substrings Hard
StringRolling HashHash Function
422 Maximum Product of Word Lengths Medium
ArrayStringBit Manipulation
423 Maximum Repeating Substring Easy
StringDynamic ProgrammingString Matching
424 Maximum Score After Splitting a String Easy
StringPrefix Sum
425 Maximum Score From Removing Substrings Medium
StringStackGreedy
426 Maximum Score Words Formed by Letters Hard
ArrayHash TableString
427 Maximum Total Area Occupied by Pistons Hard
ArrayHash TableString
428 Maximum Value after Insertion Medium
StringGreedy
429 Maximum Value of a String in an Array Easy
ArrayString
430 Merge Strings Alternately Easy
Two PointersString
431 Mini Parser Medium
StringStackDepth-First Search
432 Minimize Result by Adding Parentheses to Expression Medium
StringEnumeration
433 Minimize Rounding Error to Meet Target Medium
ArrayMathString
434 Minimize String Length Easy
Hash TableString
435 Minimum Add to Make Parentheses Valid Medium
StringStackGreedy
Showing 421-435 of 803
1 ... 27 28 29 30 31 ... 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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