# Status Problem video Level Completes Likes
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Collatz Conjecture - Steps to transform Number to 1

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String to Integer (AtoI - ASCII to Integer)

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

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Find third largest element in a given array

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Find duplicates Characters in the given String

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Sum of all Unique elements in a given array

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Java program to find the largest element in array

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Find three smallest elements in a given array

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Stack Java Class - Explained

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Infix, Postfix and Prefix Notations/Expressions

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Count Set bits in a given Number

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Check if array contains all unique or distinct numbers

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Product of all Unique elements in a given array

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Reverse a given number

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

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Find first three largest elements in a given array

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Selection Sort

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346

Valid Brackets – Part 2 | Stack Method

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345

Find the roots of Quadratic Equation – Java Program

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344

Given two strings validate the output string

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Find two smallest elements in a given array

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Front and Back Search in an Array

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339

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

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Find first two largest elements in a given array

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Calculate Logn base r – Java Implementation

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Sum the elements of an Array

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Insertion Sort

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Find Largest and Smallest word in a given String

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Check if Given Number is power of 2

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Rotate the given array in cycles

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Find the Area and Perimeter of Rectangle

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Stack Data Structure – Introduction and Implementation

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Collatz Conjecture - Steps to transform Number to 1

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

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

Find first three largest elements in a given array

Selection Sort

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

Sum the elements of an Array

Insertion Sort

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

Stack Data Structure – Introduction and Implementation