Featured Lists Top 20 Problems on Dynamic programming Top 10 Problems on Backtracking Top 20 Problems on Graph Top 25 Problems on Trees Top 10 Problems on Bits Manipulation Top 15 Problems in LinkedList All Problems # Status Problem video Level Completes Likes 216 Find the element which appears maximum number of times in the array Medium % 0 215 Find duplicates in an given array in O(n) time and O(1) space Medium % 0 214 Find the last non repeating character in a given string. Beginner % 0 213 Find the last repeating character in a given string Beginner % 0 212 Find the first non repeating character in a given string Beginner % 0 211 Find the first repeating character in a given string Beginner % 0 210 k-Nearest Neighbors Hard % 0 209 Find longest Snake sequence in a given matrix Medium % 1 208 Dynamic Programming - Count all paths in 2D Matrix with Obstructions in it Medium % 1 207 Dynamic Programming - Count all paths from top left to bottom right of a mXn matrix Medium % 1 206 Reverse the given Array without using built in function Beginner % 0 205 Print All Diagonals of a given matrix Medium % 1 204 Dynamic Programming - Edit Distance Problem Hard % 2 203 Dynamic Programming - Coin In a Line Game Problem Hard % 0 202 Dynamic Programming - Box Stacking Problem Hard % 0 201 Dynamic Programming - Split the String into Minimum number of Palindromes. Hard % 0 200 Dynamic Programming - Highway Billboard Problem Hard % 0 199 Dynamic Programming - Maximum Subarray Problem Medium % 0 198 Kadane's Algorithm - Maximum Subarray Problem Medium % 1 197 Convert Binary Tree into Threaded Binary Tree Hard % 0 Find the element which appears maximum number of times in the array Find duplicates in an given array in O(n) time and O(1) space Find the last non repeating character in a given string. Find the last repeating character in a given string Find the first non repeating character in a given string Find the first repeating character in a given string k-Nearest Neighbors Find longest Snake sequence in a given matrix Dynamic Programming - Count all paths in 2D Matrix with Obstructions in it Dynamic Programming - Count all paths from top left to bottom right of a mXn matrix Reverse the given Array without using built in function Print All Diagonals of a given matrix Dynamic Programming - Edit Distance Problem Dynamic Programming - Coin In a Line Game Problem Dynamic Programming - Box Stacking Problem Dynamic Programming - Split the String into Minimum number of Palindromes. Dynamic Programming - Highway Billboard Problem Dynamic Programming - Maximum Subarray Problem Kadane's Algorithm - Maximum Subarray Problem Convert Binary Tree into Threaded Binary Tree 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
