Problems

# Status Problem Level Completes Likes
71

String to Integer (AtoI - ASCII to Integer)

Beginner % 0
72

Find all Prime Numbers less than equal to N | Set 1

Beginner % 0
73

Find third largest element in a given array

Beginner % 0
74

Find duplicates Characters in the given String

Beginner % 0
75

Sum of all Unique elements in a given array

Beginner % 0
76

Java program to find the largest element in array

Beginner % 0
77

Find three smallest elements in a given array

Beginner % 0
78

Stack Java Class - Explained

Beginner % 0
79

Infix, Postfix and Prefix Notations/Expressions

Beginner % 0
80

Count Set bits in a given Number

Beginner % 0
81

Check if array contains all unique or distinct numbers.

Beginner % 0
82

Product of all Unique elements in a given array.

Beginner % 0
83

Reverse a given number – Java Code

Beginner % 0
84

Check if given number is perfect square - O(√N) Solution

Beginner % 0
85

Find first three largest elements in a given array

Beginner % 0
86

Selection Sort – Java Implementation

Beginner % 0
88

Valid Brackets – Part 2 | Stack Method

Beginner % 0
89

Find the roots of Quadratic Equation – Java Program

Beginner % 0
90

Given two strings validate the output string

Beginner % 0
91

Find two smallest elements in a given array

Beginner % 0
92

Front and Back Search in an Array

Beginner % 0
94

Multiply with power of 2 without using pow() or * operator

Beginner % 0
95

Find first two largest elements in a given array

Beginner % 0
96

Calculate Logn base r – Java Implementation

Beginner % 0
97

Java Program to find Sum the elements of an Array

Beginner % 0
98

Insertion Sort – Java Implementation

Beginner % 0
99

Find Largest and Smallest word in a given String

Beginner % 0
100

Check if Given Number is power of 2.

Beginner % 0
101

Rotate the given array in cycles

Beginner % 0
103

Find the Area and Perimeter of Rectangle – Java Program

Beginner % 0
104

Stack Data Structure – Introduction and Implementation

Beginner % 0
105

Reverse the given String using Stack

Beginner % 0

String to Integer (AtoI - ASCII to Integer)

Find all Prime Numbers less than equal to N | Set 1

Find third largest element in a given array

Find duplicates Characters in the given String

Sum of all Unique elements in a given array

Java program to find the largest element in array

Find three smallest elements in a given array

Stack Java Class - Explained

Infix, Postfix and Prefix Notations/Expressions

Count Set bits in a given Number

Check if array contains all unique or distinct numbers.

Product of all Unique elements in a given array.

Reverse a given number – Java Code

Check if given number is perfect square - O(√N) Solution

Find first three largest elements in a given array

Selection Sort – Java Implementation

Valid Brackets – Part 2 | Stack Method

Find the roots of Quadratic Equation – Java Program

Given two strings validate the output string

Find two smallest elements in a given array

Front and Back Search in an Array

Multiply with power of 2 without using pow() or * operator

Find first two largest elements in a given array

Calculate Logn base r – Java Implementation

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

Find the Area and Perimeter of Rectangle – Java Program

Stack Data Structure – Introduction and Implementation

Reverse the given String using Stack