# Status Problem video Level Completes Likes
362

Stack Java Class - Explained

Beginner % 0
356

Check if array contains all unique or distinct numbers

Beginner % 0
355

Product of all Unique elements in a given array

Beginner % 0
350

Find first three largest elements in a given array

Beginner % 0
342

Find two smallest elements in a given array

Beginner % 0
341

Front and Back Search in an Array

Beginner % 0
338

Find Number of reverse pairs in an array

Hard % 1
337

Find first two largest elements in a given array

Beginner % 0
333

Sum the elements of an Array

Beginner % 0
329

Rotate the given array in cycles

Beginner % 0
328

Heap Sort

Medium % 0
325

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

Medium % 1
324

Stack Data Structure – Introduction and Implementation

Beginner % 0
321

Bubble Sort and Optimized Bubble Sort

Beginner % 1
311

Linear Search Algorithm

Beginner % 0
300

Find the Largest Gap Between Elements in an Array

Beginner % 0
271

Snake and Ladder Problem

Hard % 1
262

Count and print all Subarrays with product less than K in O(n)

Hard % 0
261

Sliding Window Algorithm (Track the maximum of each subarray of size k)

Hard % 0

Stack Java Class - Explained

Check if array contains all unique or distinct numbers

Product of all Unique elements in a given array

Find first three largest elements in a given array

Find two smallest elements in a given array

Front and Back Search in an Array

Find Number of reverse pairs in an array

Find first two largest elements in a given array

Sum the elements of an Array

Rotate the given array in cycles

Heap Sort

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

Stack Data Structure – Introduction and Implementation

Bubble Sort and Optimized Bubble Sort

Linear Search Algorithm

Find the Largest Gap Between Elements in an Array

Snake and Ladder Problem

Count and print all Subarrays with product less than K in O(n)

Sliding Window Algorithm (Track the maximum of each subarray of size k)