Home - Algorithms

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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

#	Problem	Level	Completes	Likes
71	Graph – Print all paths between source and destination	Medium	%	1
72	Find two non-repeating numbers in an array in O(n) time and O(1) space	Hard	%	1
73	Number of bit to be flipped to convert one number to another.	Beginner	%	1
74	All elements appears thrice and one element appears once. Find that element in O(n) time and O(1) space	Hard	%	1
75	Find the only element in array which appears only once	Beginner	%	1
76	Algorithm to calculate power(k,n).	Beginner	%	1
77	Number of 1’s in bit representation of a number	Beginner	%	1
78	Find the right most unset bit OR zero bit of a number	Beginner	%	1
79	Find the two repeating elements in a given array \| 6 Approaches	Medium	%	1
80	Find the right most set bit of a number	Beginner	%	1
81	Find two elements whose sum is closest to zero	Medium	%	1
82	Find longest Snake sequence in a given matrix	Medium	%	1
83	Dynamic Programming - Count all paths in 2D Matrix with Obstructions in it	Medium	%	1
84	Dynamic Programming - Count all paths from top left to bottom right of a mXn matrix	Medium	%	1
85	Print All Diagonals of a given matrix	Medium	%	1
86	Kadane's Algorithm - Maximum Subarray Problem	Medium	%	1
87	Shortest Range in K-sorted Lists	Hard	%	1
88	Get the Sum of all left leaves in a Binary tree	Beginner	%	1
89	Convert binary tree to its Sum tree	Medium	%	1
90	Tree Traversals	Beginner	%	1
91	Dynamic Programming — Longest Palindromic Subsequence	Hard	%	1
92	Dynamic Programming - Maximum Product Cutting Problem.	Medium	%	1
93	Dynamic Programming - Rod Cutting Problem	Medium	%	1
94	Dynamic Programming - Coin Change Problem	Medium	%	1
95	Dynamic Programming - Minimum Cost Path Problem	Medium	%	1
96	Dynamic Programming - Maximum size square sub-matrix with all 1s	Medium	%	1
97	Dynamic Programming - Longest Increasing Subsequence	Medium	%	1
98	Find the Second Largest Element in an Array	Beginner	%	1
99	Breadth-First Search/Traversal in a Graph.	Beginner	%	1
100	Dynamic Programming - Stairs Climbing Puzzle	Beginner	%	1
101	Dynamic Programming - Minimum Coin Change Problem	Medium	%	1
102	Introduction To Dynamic Programming - Fibonacci Series	Beginner	%	1
103	Find a Number occurring odd number of times in a Given array	Beginner	%	1
104	Find a Missing Number From a Sequence of Consecutive Numbers \| XOR Method	Beginner	%	1
105	Check If One Binary is Mirror Tree of another Binary Tree.	Beginner	%	1