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Area, Perimeter and Volume
Area, Perimeter and Volume
 
 
Armstrong Number
Armstrong Number
 
 
Backtracking Introduction (Maze Problem)
Backtracking Introduction (Maze Problem)
 
 
Between Two Sets
Between Two Sets
 
 
Binary Base Basics
Binary Base Basics
 
 
Bits Operation
Bits Operation
 
 
Breaking the Record
Breaking the Record
 
 
Caeser Cipher
Caeser Cipher
 
 
Calculator Program
Calculator Program
 
 
Chef and Chess Board
Chef and Chess Board
 
 
Chef and the Hair Salon
Chef and the Hair Salon
 
 
Counting Sort 1
Counting Sort 1
 
 
Diagonal Difference
Diagonal Difference
 
 
Divisible Sum Pairs
Divisible Sum Pairs
 
 
Even Odd Number
Even Odd Number
 
 
Even digits
Even digits
 
 
Factorial of a Number
Factorial of a Number
 
 
Factors of a Number
Factors of a Number
 
 
Fibonnaci Series
Fibonnaci Series
 
 
Find Duplicate Number
Find Duplicate Number
 
 
Find all Duplicates
Find all Duplicates
 
 
Find all numbers disappeared in an array
Find all numbers disappeared in an array
 
 
Find minimum number in an array of integers
Find minimum number in an array of integers
 
 
Find pivot index
Find pivot index
 
 
First and last position of an element in a sorted array
First and last position of an element in a sorted array
 
 
Flipping the Matrix
Flipping the Matrix
 
 
For a given number the output is reverse number
For a given number the output is reverse number
 
 
Greeting Message
Greeting Message
 
 
Grid Challenge
Grid Challenge
 
 
Important Questions
Important Questions
 
 
Input till the user enters 0 than add the numbers
Input till the user enters 0 than add the numbers
 
 
Input till the user enters 0 than print the largest number
Input till the user enters 0 than print the largest number
 
 
Java Currency Formatter
Java Currency Formatter
 
 
Largest Number
Largest Number
 
 
Letter Combinations of a Phone Number
Letter Combinations of a Phone Number
 
 
Lonely Integer
Lonely Integer
 
 
Migratory Birds
Migratory Birds
 
 
Missing number
Missing number
 
 
N Queens Puzzle Solved
N Queens Puzzle Solved
 
 
NQueens NKnights Sudoku Solver Backtracking Questions
NQueens NKnights Sudoku Solver Backtracking Questions
 
 
Number of dice rolls to target sum
Number of dice rolls to target sum
 
 
Number of digits in a number
Number of digits in a number
 
 
Number of steps to reduce a number to zero
Number of steps to reduce a number to zero
 
 
Number of zeros in a number
Number of zeros in a number
 
 
Number operations
Number operations
 
 
Palindrome Index
Palindrome Index
 
 
Palindrome number using recursion/.idea
Palindrome number using recursion/.idea
 
 
Pattern Questions
Pattern Questions
 
 
Peak element in an mountain array
Peak element in an mountain array
 
 
Position of an element in an array of infinite numbers
Position of an element in an array of infinite numbers
 
 
Prime Number
Prime Number
 
 
Programming Language
Programming Language
 
 
Recursion Array
Recursion Array
 
 
Recursion Permutation
Recursion Permutation
 
 
Recursion Subsets, Subsequence and String questions
Recursion Subsets, Subsequence and String questions
 
 
Recursive Digit Sum
Recursive Digit Sum
 
 
Reverse a number using recursion
Reverse a number using recursion
 
 
Reversing an Array
Reversing an Array
 
 
Richest customer wealth
Richest customer wealth
 
 
Rotation count in a rotated sorted array
Rotation count in a rotated sorted array
 
 
Running sum of 1d array
Running sum of 1d array
 
 
Rupee to Dollar
Rupee to Dollar
 
 
Search in a mountain array
Search in a mountain array
 
 
Search in rotated sorted array
Search in rotated sorted array
 
 
Searching a character in a given string
Searching a character in a given string
 
 
Searching and finding the maximum number in a 2d array
Searching and finding the maximum number in a 2d array
 
 
Set Mismatch
Set Mismatch
 
 
Simple Interest
Simple Interest
 
 
Smallest letter greater than target
Smallest letter greater than target
 
 
String Introduction
String Introduction
 
 
String Palindrome
String Palindrome
 
 
Subarray Division
Subarray Division
 
 
Sum of digits using Resursion
Sum of digits using Resursion
 
 
Swap Numbers
Swap Numbers
 
 
Time Conversion
Time Conversion
 
 
Two Sum
Two Sum
 
 
Use integers a, b and n to create the following series
Use integers a, b and n to create the following series
 
 
ATM2.java
ATM2.java
 
 
BirthdayCakeCandles.java
BirthdayCakeCandles.java
 
 
Diagonal_Difference.cpp
Diagonal_Difference.cpp
 
 
EZSPEAK.java
EZSPEAK.java
 
 
GradingStudent.java
GradingStudent.java
 
 
LowestCommonAncestor.java
LowestCommonAncestor.java
 
 
MinMaxSum.java
MinMaxSum.java
 
 
Plus_Minus.cpp
Plus_Minus.cpp
 
 
SLOWSOLN.java
SLOWSOLN.java
 
 
Staircase.cpp
Staircase.cpp
 
 
TimeConversion.java
TimeConversion.java
 
 
VALIDMIN.java
VALIDMIN.java
 
 
data.jpeg
data.jpeg
 
 
readme.md
readme.md
 
 

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Questions

This repository contains many Data Structures and Algorithms questions from different programming platform like HackerRank, CodeChef and Leetcode. Almost all the questions are solved in Java. Feel free to add your own questions to this repo.

Data Structures and Algorithms

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