Home - Algorithms

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All Problems

#	Problem	Level	Completes	Likes
176	Find third largest element in a given array	Beginner	%	0
177	Find duplicates Characters in the given String	Beginner	%	0
178	Max Flow Problem - Ford-Fulkerson Algorithm	Hard	%	0
179	Sum of all Unique elements in a given array	Beginner	%	0
180	Java program to find the largest element in array	Beginner	%	0
181	Convert Infix to Postfix Expression	Medium	%	0
182	Find three smallest elements in a given array	Beginner	%	0
183	Evaluation of Infix expressions	Medium	%	0
184	Stack Java Class - Explained	Beginner	%	0
185	Convert Prefix to Infix Expression	Medium	%	0
186	Least Recently Used (LRU) Cache – Using LinkedHashSet and Deque \| Set 2	Hard	%	0
187	Merge K sorted Linked List - Using Priority Queue	Hard	%	0
188	Infix, Postfix and Prefix Notations/Expressions	Beginner	%	0
189	Count Set bits in a given Number	Beginner	%	1
190	Check if array contains all unique or distinct numbers.	Beginner	%	0
191	Product of all Unique elements in a given array.	Beginner	%	0
192	Valid Multiple Parentheses	Medium	%	1
193	Reverse a given number – Java Code	Beginner	%	1
194	Check if given number is perfect square - O(√N) Solution	Beginner	%	0
195	Least Recently Used (LRU) Cache – Using HashMap and Doubly Linked List \| Set 1	Hard	%	1
196	Find first three largest elements in a given array	Beginner	%	0
197	Selection Sort – Java Implementation	Beginner	%	0
198	Print Number with its Sign in Java	Beginner	%	0
199	Find the nearest building which has bike \| Find nearest specific vertex from source in a graph.	Hard	%	0
200	Valid Brackets – Part 2 \| Stack Method	Beginner	%	0
201	Find the roots of Quadratic Equation – Java Program	Beginner	%	0
202	Given two strings validate the output string	Beginner	%	0
203	Generate all the strings of length n from 0 to k-1.	Medium	%	0
204	Find two smallest elements in a given array	Beginner	%	0
205	Front and Back Search in an Array	Beginner	%	0
206	Print all Unique elements in a given array	Beginner	%	0
207	Multiply with power of 2 without using pow() or * operator	Beginner	%	1
208	Find Number of reverse pairs in an array	Hard	%	1
209	Find first two largest elements in a given array	Beginner	%	0
210	Calculate Logn base r – Java Implementation	Beginner	%	0