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All Problems

#	Status	Problem	Level	Completes	Likes
421		Disjoint Set | Union-Find Algorithm - Union by rank and path compression	Hard	%	0
422		Disjoint Set Data Structure - Union Find Algorithm	Hard	%	0
423		Graph – Find Number of non reachable vertices from a given vertex	Medium	%	0
424		Graph – Detect Cycle in a Directed Graph using colors	Hard	%	0
425		Graph – Detect Cycle in an Undirected Graph using DFS	Medium	%	0
426		Graph – Software Installation Problem	Medium	%	0
427		Weighted Graph Implementation – JAVA	Beginner	%	1
428		Java Pair Class	Beginner	%	0
429		Graph Implementation – Adjacency List - Better| Set 2	Beginner	%	0
430		Minimum Copy Paste Operations	Medium	%	0
431		Deque Implementation – Java	Beginner	%	0
432		Print all sub sequences of a given String	Medium	%	0
433		Print all substrings of a given string	Medium	%	0
434		Print all subarrays of a given array	Medium	%	0
435		Nuts & Bolts Problem (Lock & Key problem)	Beginner	%	0
436		Divide and Conquer - Rearrange array elements in special order	Medium	%	0
437		Remove Duplicates from a string	Medium	%	0
438		Find median of two sorted arrays of same size	Medium	%	0
439		Dynamic programming – Printer Problem	Hard	%	0
440		Separate even and odd integers in a given array	Beginner	%	0
441		Find local minimum or local maximum in O(1).	Medium	%	0
442		Separate 0’s and 1’s in a given array	Beginner	%	0
443		Find three elements in an array that sum to a zero.	Beginner	%	0
444		Find three elements in an array that sum to a given value	Beginner	%	0
445		Majority Element- Boyer–Moore majority vote algorithm	Medium	%	0
446		Majority Element – Part 1	Beginner	%	0
447		Find the local minima in a given array	Medium	%	0
448		Check whether the given number is a perfect square	Beginner	%	0
449		Check if array is sorted using recursion	Beginner	%	0
450		Find the Index from which 0 starts	Beginner	%	0
451		Find the increasing OR decreasing point in an array	Beginner	%	0
452		Find remainder without using modulo operator	Beginner	%	0
453		Swap two numbers without using extra variable	Beginner	%	0
454		Maximum difference between two elements where larger element appears after the smaller element	Medium	%	0
455		Find the two repeating elements in a given array | 6 Approaches	Medium	%	1

Disjoint Set | Union-Find Algorithm - Union by rank and path compression

Disjoint Set Data Structure - Union Find Algorithm

Graph – Find Number of non reachable vertices from a given vertex

Graph – Detect Cycle in a Directed Graph using colors

Graph – Detect Cycle in an Undirected Graph using DFS

Graph – Software Installation Problem

Weighted Graph Implementation – JAVA

Java Pair Class

Graph Implementation – Adjacency List - Better| Set 2

Minimum Copy Paste Operations

Deque Implementation – Java

Print all sub sequences of a given String

Print all substrings of a given string

Print all subarrays of a given array

Nuts & Bolts Problem (Lock & Key problem)

Divide and Conquer - Rearrange array elements in special order

Remove Duplicates from a string

Find median of two sorted arrays of same size

Dynamic programming – Printer Problem

Separate even and odd integers in a given array

Find local minimum or local maximum in O(1).

Separate 0’s and 1’s in a given array

Find three elements in an array that sum to a zero.

Find three elements in an array that sum to a given value

Majority Element- Boyer–Moore majority vote algorithm

Majority Element – Part 1

Find the local minima in a given array

Check whether the given number is a perfect square

Check if array is sorted using recursion

Find the Index from which 0 starts

Find the increasing OR decreasing point in an array

Find remainder without using modulo operator

Swap two numbers without using extra variable

Maximum difference between two elements where larger element appears after the smaller element

Find the two repeating elements in a given array | 6 Approaches

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