# Status Problem video Level Completes Likes 211 Find the first repeating character in a given string Beginner % 0 205 Print All Diagonals of a given matrix Medium % 1 198 Kadane's Algorithm - Maximum Subarray Problem Medium % 1 193 Implement Stack Using Linked List Beginner % 0 186 Reverse a Linked List in groups of given size 'K' Medium % 0 155 Find the Kth Smallest/Largest Element in an Array Using Heap Beginner % 0 146 Dynamic Programming - Stairs Climbing Puzzle Beginner % 1 141 Find the Single Occurrence Element in an Array (Odd One Out) Beginner % 1 140 Rearrange Array Elements (A[i] = i) | In-place Approach Medium % 0 139 Find Missing Numbers in Sequences - XOR Method Beginner % 1 138 Find the Maximum Value in a Binary Tree Beginner % 0 132 Find the Deepest Node in a Binary Tree Medium % 1 125 Find the Increasing Triplet Sub-sequence in an array Medium % 0 120 Convert Decimal to Irreducible Fraction (Simplified Form) Beginner % 0 112 Generate All n-Bit Binary Strings Medium % 1 111 Find Unique Number in Array with Duplicates (Except One) Beginner % 1 103 Delete X Nodes After Y Nodes In a Linked List Beginner % 0 92 Check if Array Contains All Elements Of Some Given Range Medium % 0 91 Check if Array is Consecutive Integers Beginner % 0 90 Find Subarray with Sum Equal to a Target Value Medium % 0 Find the first repeating character in a given string Print All Diagonals of a given matrix Kadane's Algorithm - Maximum Subarray Problem Implement Stack Using Linked List Reverse a Linked List in groups of given size 'K' Find the Kth Smallest/Largest Element in an Array Using Heap Dynamic Programming - Stairs Climbing Puzzle Find the Single Occurrence Element in an Array (Odd One Out) Rearrange Array Elements (A[i] = i) | In-place Approach Find Missing Numbers in Sequences - XOR Method Find the Maximum Value in a Binary Tree Find the Deepest Node in a Binary Tree Find the Increasing Triplet Sub-sequence in an array Convert Decimal to Irreducible Fraction (Simplified Form) Generate All n-Bit Binary Strings Find Unique Number in Array with Duplicates (Except One) Delete X Nodes After Y Nodes In a Linked List Check if Array Contains All Elements Of Some Given Range Check if Array is Consecutive Integers Find Subarray with Sum Equal to a Target Value 1 2 3 4 5 6 7