Home - Algorithms

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All Problems

#	Problem	Level	Completes	Likes
106	Given an array, Print sum of all subsets	Beginner	%	1
107	Determine the given routing number belong to which bank	Medium	%	0
108	Check if interval is covered in given coordinates	Medium	%	0
109	Lexicographically previous permutation With One swap	Medium	%	1
110	Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N	Medium	%	0
111	Hamming Distance between two given integers	Beginner	%	1
112	Print boundary of given matrix/2D array.	Beginner	%	1
113	Depth-First Search (DFS) in 2D Matrix/2D-Array - Iterative Solution	Beginner	%	0
114	Breadth-First Search (BFS) in 2D Matrix/2D-Array	Beginner	%	1
115	Check the completeness of given binary tree \| Set 1 - Using Node Count	Medium	%	0
116	Longest substring with at most K unique characters	Medium	%	2
117	Find all the Armstrong numbers in the given range	Beginner	%	0
118	Collatz Conjecture - Maximum Steps takes to transform (1, N) to 1.	Medium	%	0
119	Number of Islands using BFS	Medium	%	0
120	Check if Graph is Bipartite - Adjacency List using Depth-First Search(DFS)	Hard	%	0
121	Check if the given binary tree is Full or not.	Beginner	%	1
122	Check if given undirected graph is connected or not	Beginner	%	0
123	Given Graph - Remove a vertex and all edges connect to the vertex	Medium	%	0
124	Print Stack in reverse order.	Beginner	%	0
125	Sort a given stack - Using Recursion	Hard	%	1
126	Number's Complement - 2 Approaches	Medium	%	1
127	Print all subsets of an array with a sum equal to zero	Medium	%	0
128	Social Network Problem	Hard	%	0
129	Maximum number edges to make Acyclic Undirected/Directed Graph	Beginner	%	0
130	Evaluation of Prefix Expressions (Polish Notation) \| Set 2	Medium	%	0
131	Hamming Distance between two given strings	Beginner	%	0
132	Breadth-First Search in Disconnected Graph	Medium	%	0
133	ZigZag OR Diagonal traversal in 2d array/Matrix using queue	Medium	%	0
134	Check if Number is divisible by its digits	Beginner	%	0
135	Check if the given number is Armstrong number or not	Beginner	%	0
136	Evaluation of Prefix Expressions (Polish Notation) \| Set 1	Medium	%	0
137	Minimum Boats Required to rescue people	Medium	%	0
138	Number of Islands	Medium	%	1
139	Minimum No of operations required to convert a given number to 1 - Integer Replacement Problem.	Medium	%	0
140	Evaluation of Postfix Expressions (Polish Postfix notation) \| Set 2	Medium	%	0