Problems # Status Problem Level Completes Likes 36 Two Sum Problem Beginner % 0 37 Find if any two intervals overlap in given intervals Medium % 1 38 Given an array, find all unique subsets with a given sum with allowed repeated digits. Medium % 0 39 Print all steps to convert one string to another string Medium % 0 40 Find all subsets of size K from a given number N (1 to N) Medium % 0 41 Find all possible combinations with sum K from a given number N(1 to N) with the repetition of numbers is allowed Medium % 0 42 Stable Marriage Problem - Gale–Shapley Algorithm - Java Hard % 0 43 Insert a node in the given sorted linked list. Beginner % 0 44 Construct the largest number from the given array. Medium % 0 45 Given an array, print all unique subsets with a given sum. Medium % 0 46 Sum of length of subsets which contains given value K and all elements in subsets are less than equal to K. Medium % 0 47 Replace array elements with maximum element on the right. Medium % 0 48 Find all unique combinations of numbers (from 1 to 9 ) with sum to N Medium % 0 49 Activity Selection Problem Medium % 0 50 Find the sum of overlapping elements in two sets Beginner % 0 51 Check if Graph is Bipartite - Adjacency List using Breadth-First Search(BFS) Hard % 0 52 Check If Given Undirected Graph is a tree Medium % 0 53 Articulation Points OR Cut Vertices in a Graph Hard % 0 54 Check the completeness of given binary tree | Set 2 - Using Level Order Traversal Medium % 0 55 Find the number of distinct Islands OR connected components. Hard % 1 56 Print All Paths in Dijkstra's Shortest Path Algorithm Hard % 0 57 Given an array, Print sum of all subsets Beginner % 0 58 Determine the given routing number belong to which bank Medium % 0 59 Check if interval is covered in given coordinates Medium % 0 60 Lexicographically previous permutation With One swap Medium % 0 61 Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N Medium % 0 62 Check the completeness of given binary tree | Set 1 - Using Node Count Medium % 0 63 Collatz Conjecture - Maximum Steps takes to transform (1, N) to 1. Medium % 0 64 Number of Islands using BFS Medium % 0 65 Check if Graph is Bipartite - Adjacency List using Depth-First Search(DFS) Hard % 0 66 Check if the given binary tree is Full or not. Beginner % 0 67 Print Stack in reverse order. Beginner % 0 68 Sort a given stack - Using Recursion Hard % 0 69 Number's Complement - 2 Approaches Medium % 0 70 Print all subsets of an array with a sum equal to zero Medium % 0 Two Sum Problem Find if any two intervals overlap in given intervals Given an array, find all unique subsets with a given sum with allowed repeated digits. Print all steps to convert one string to another string Find all subsets of size K from a given number N (1 to N) Find all possible combinations with sum K from a given number N(1 to N) with the repetition of numbers is allowed Stable Marriage Problem - Gale–Shapley Algorithm - Java Insert a node in the given sorted linked list. Construct the largest number from the given array. Given an array, print all unique subsets with a given sum. Sum of length of subsets which contains given value K and all elements in subsets are less than equal to K. Replace array elements with maximum element on the right. Find all unique combinations of numbers (from 1 to 9 ) with sum to N Activity Selection Problem Find the sum of overlapping elements in two sets Check if Graph is Bipartite - Adjacency List using Breadth-First Search(BFS) Check If Given Undirected Graph is a tree Articulation Points OR Cut Vertices in a Graph Check the completeness of given binary tree | Set 2 - Using Level Order Traversal Find the number of distinct Islands OR connected components. Print All Paths in Dijkstra's Shortest Path Algorithm Given an array, Print sum of all subsets Determine the given routing number belong to which bank Check if interval is covered in given coordinates Lexicographically previous permutation With One swap Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N Check the completeness of given binary tree | Set 1 - Using Node Count Collatz Conjecture - Maximum Steps takes to transform (1, N) to 1. Number of Islands using BFS Check if Graph is Bipartite - Adjacency List using Depth-First Search(DFS) Check if the given binary tree is Full or not. Print Stack in reverse order. Sort a given stack - Using Recursion Number's Complement - 2 Approaches Print all subsets of an array with a sum equal to zero 1 2 3 4 5 6 7 8 9