# Status Problem video Level Completes Likes
380

Count the number of nodes in a given binary tree

Beginner % 0
378

Longest contiguous character in a given String - O(N) Solution

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376

Collatz Conjecture - Steps to transform Number to 1

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375

String to Integer (AtoI - ASCII to Integer)

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374

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

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370

Find third largest element in a given array

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369

Find duplicates Characters in the given String

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367

Sum of all Unique elements in a given array

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366

Java program to find the largest element in array

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364

Find three smallest elements in a given array

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362

Stack Java Class - Explained

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358

Infix, Postfix and Prefix Notations/Expressions

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357

Count Set bits in a given Number

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356

Check if array contains all unique or distinct numbers

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355

Product of all Unique elements in a given array

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353

Reverse a given number

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352

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

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350

Find first three largest elements in a given array

Beginner % 0
349

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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342

Find two smallest elements in a given array

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341

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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337

Find first two largest elements in a given array

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336

Calculate Logn base r – Java Implementation

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333

Sum the elements of an Array

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332

Insertion Sort

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331

Find Largest and Smallest word in a given String

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330

Check if Given Number is power of 2

Beginner % 1
329

Rotate the given array in cycles

Beginner % 0

Count the number of nodes in a given binary tree

Longest contiguous character in a given String - O(N) Solution

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