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Top 20 Problems on Dynamic programming

Top 10 Problems on Backtracking

Top 20 Problems on Graph

Top 25 Problems on Trees

All Problems

# Status Problem Level Completes Likes
526

Find Whether Two Strings are Permutation of each other

Beginner % 1
527

Find Intersection Point in Two Linked List

Medium % 0
528

Find the Loop in a Linked list, find its length and Break the Loop

Medium % 0
529

Reverse a Linked List

Beginner % 0
530

Count All Paths from Top left to bottom right in Two Dimensional Array including Diagonal Paths

Medium % 1
532

Merge or Combine Two Sorted Linked Lists

Medium % 0
533

Singly Linked List Implementation

Beginner % 0
534

Rearrange Positive and Negative Numbers of Array On Each Side in O(nlogn)

Hard % 0
535

Find The Longest Sequence Of Prefix Shared By All The Words In A String

Medium % 0
537

Find a pair of numbers from an array whose sum equals k

Beginner % 0
538

Check If String has All Unique Characters

Beginner % 0
539

Quick Sort Implementation

Medium % 0
540

Valid or Well Formed Parentheses | Part - 1

Medium % 0
541

Find an Element in 2 dimensional sorted array

Medium % 0
542

Find Whether Given String is palindrome or Not.

Beginner % 0
543

Find a peak element in a Given Array

Beginner % 0
544

Find two Missing Numbers in a Sequence of Consecutive Numbers

Beginner % 0
545

Find a Missing Number From a Sequence of Consecutive Numbers

Beginner % 0
546

Hash Table Implementation

Beginner % 0
547

Merge Sort - Updated - Most Efficient ways to Implement

Medium % 1

Find Whether Two Strings are Permutation of each other

Find Intersection Point in Two Linked List

Find the Loop in a Linked list, find its length and Break the Loop

Reverse a Linked List

Count All Paths from Top left to bottom right in Two Dimensional Array including Diagonal Paths

Merge or Combine Two Sorted Linked Lists

Singly Linked List Implementation

Rearrange Positive and Negative Numbers of Array On Each Side in O(nlogn)

Find The Longest Sequence Of Prefix Shared By All The Words In A String

Find a pair of numbers from an array whose sum equals k

Check If String has All Unique Characters

Quick Sort Implementation

Valid or Well Formed Parentheses | Part - 1

Find an Element in 2 dimensional sorted array

Find Whether Given String is palindrome or Not.

Find a peak element in a Given Array

Find two Missing Numbers in a Sequence of Consecutive Numbers

Find a Missing Number From a Sequence of Consecutive Numbers

Hash Table Implementation

Merge Sort - Updated - Most Efficient ways to Implement