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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

#	Status	Problem	Level	Completes	Likes
211		Find Number of reverse pairs in an array	Hard	%	1
212		Find first two largest elements in a given array	Beginner	%	0
213		Calculate Logn base r – Java Implementation	Beginner	%	0
214		Max Flow Problem – Introduction	Hard	%	0
215		Dijkstra Algorithm Implementation – TreeSet and Pair Class	Hard	%	0
216		Java Program to find Sum the elements of an Array	Beginner	%	0
217		Insertion Sort – Java Implementation	Beginner	%	0
218		Find Largest and Smallest word in a given String	Beginner	%	0
219		Check if Given Number is power of 2.	Beginner	%	1
220		Rotate the given array in cycles	Beginner	%	0
221		Heap Sort – Java Implementation	Medium	%	0
222		Print First n numbers in Fibonacci Series	Beginner	%	0
223		Find the Area and Perimeter of Rectangle – Java Program	Beginner	%	0
224		Find no of reverse pairs in an array which is sorted in two parts in O(N)	Medium	%	1
225		Stack Data Structure – Introduction and Implementation	Beginner	%	0
226		Reverse the given String using Stack	Beginner	%	0
227		Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Priority Queue – Java Implementation	Hard	%	0
228		Bubble Sort and Optimized Bubble Sort- Java Implementation	Beginner	%	1
229		Find the Area of Triangle using base and height - Java Program	Beginner	%	0
230		Get the Sum of Digits in a number till it become a single digit	Medium	%	0
231		Calculate Log2n without using built-in function	Beginner	%	1
232		Check if given number is Prime - O(√N) Solution – Java Program	Medium	%	0
233		Print First N Prime Numbers - Java Code	Beginner	%	0
234		Print My IP Address – Java Code	Beginner	%	0
235		Find the Circumference of a Circle - Java Program	Beginner	%	0
236		Check if two Strings are equal without using built-in function - Java	Beginner	%	0
237		Remove Vowels from a given String	Beginner	%	0
238		Linear Search Algorithm	Beginner	%	0
239		Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Min Heap – Java Implementation	Hard	%	0
240		Floyd’s Triangle – Java Implementation	Beginner	%	0
241		Print Numbers from 1 to N without using loop	Beginner	%	0
242		Swap two numbers using Bitwise XOR Operator	Medium	%	1
243		Java Program to determine if Given Year is Leap Year	Beginner	%	0
244		Find number of Distinct Permutations of a String	Medium	%	0
245		Find the Area of a Circle - Java Program	Beginner	%	0

Find Number of reverse pairs in an array

Find first two largest elements in a given array

Calculate Logn base r – Java Implementation

Max Flow Problem – Introduction

Dijkstra Algorithm Implementation – TreeSet and Pair Class

Java Program to find Sum the elements of an Array

Insertion Sort – Java Implementation

Find Largest and Smallest word in a given String

Check if Given Number is power of 2.

Rotate the given array in cycles

Heap Sort – Java Implementation

Print First n numbers in Fibonacci Series

Find the Area and Perimeter of Rectangle – Java Program

Find no of reverse pairs in an array which is sorted in two parts in O(N)

Stack Data Structure – Introduction and Implementation

Reverse the given String using Stack

Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Priority Queue – Java Implementation

Bubble Sort and Optimized Bubble Sort- Java Implementation

Find the Area of Triangle using base and height - Java Program

Get the Sum of Digits in a number till it become a single digit

Calculate Log2n without using built-in function

Check if given number is Prime - O(√N) Solution – Java Program

Print First N Prime Numbers - Java Code

Print My IP Address – Java Code

Find the Circumference of a Circle - Java Program

Check if two Strings are equal without using built-in function - Java

Remove Vowels from a given String

Linear Search Algorithm

Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Min Heap – Java Implementation

Floyd’s Triangle – Java Implementation

Print Numbers from 1 to N without using loop

Swap two numbers using Bitwise XOR Operator

Java Program to determine if Given Year is Leap Year

Find number of Distinct Permutations of a String

Find the Area of a Circle - Java Program

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