# Status Problem video Level Completes Likes
529

Duplicate even elements in an array

Beginner % 1
525

Find the number of pairs with odd XOR

Beginner % 2
517

Count number of pairs in an array with sum = K

Medium % 0
516

Count similar words in a given array

Beginner % 0
509

Find the Number of Contiguous Parking Areas

Medium % 1
498

The largest number can be formed from the given number

Beginner % 0
493

Maximum meetings in one room

Medium % 0
488

Check if given sudoku is valid or not

Medium % 0
485

Construct the Largest number from the given digits

Beginner % 1
478

Efficient Robot Problem - Find Minimum Trips

Hard % 0
473

Given an array, count the number of pairs with a given sum.

Beginner % 0
471

Two Sum Problem

Beginner % 0
470

Find if any two intervals overlap in given intervals

Medium % 0
465

Find all subsets of size K from a given number N (1 to N)

Medium % 0
463

Find all possible combinations with sum K from a given number N(1 to N) with the repetition of numbers is allowed

Medium % 0
461

Insert a node in the given sorted linked list.

Beginner % 1
460

Construct the largest number from the given array.

Medium % 0
454

Find all unique combinations of numbers (from 1 to 9 ) with sum to N

Medium % 0
452

Activity Selection Problem

Medium % 0
451

Find the sum of overlapping elements in two sets

Beginner % 0
443

Check the completeness of given binary tree | Set 2 - Using Level Order Traversal

Medium % 0
440

Given an array, Print sum of all subsets

Beginner % 1
437

Lexicographically previous permutation With One swap

Medium % 1
436

Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N

Medium % 0
431

Check the completeness of given binary tree | Set 1 - Using Node Count

Medium % 0
425

Check if the given binary tree is Full or not.

Beginner % 1
417

Maximum number edges to make Acyclic Undirected/Directed Graph

Beginner % 0
416

Evaluation of Prefix Expressions (Polish Notation) | Set 2

Medium % 0
413

ZigZag OR Diagonal traversal in 2d array/Matrix using queue

Medium % 0
410

Evaluation of Prefix Expressions (Polish Notation) | Set 1

Medium % 0
406

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2

Medium % 0
405

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 1

Medium % 0
404

Find all the numbers in the range which has prime set bits.

Beginner % 0

Duplicate even elements in an array

Find the number of pairs with odd XOR

Count number of pairs in an array with sum = K

Count similar words in a given array

Find the Number of Contiguous Parking Areas

The largest number can be formed from the given number

Maximum meetings in one room

Check if given sudoku is valid or not

Construct the Largest number from the given digits

Efficient Robot Problem - Find Minimum Trips

Given an array, count the number of pairs with a given sum.

Two Sum Problem

Find if any two intervals overlap in given intervals

Find all subsets of size K from a given number N (1 to N)

Find all possible combinations with sum K from a given number N(1 to N) with the repetition of numbers is allowed

Insert a node in the given sorted linked list.

Construct the largest number from the given array.

Find all unique combinations of numbers (from 1 to 9 ) with sum to N

Activity Selection Problem

Find the sum of overlapping elements in two sets

Check the completeness of given binary tree | Set 2 - Using Level Order Traversal

Given an array, Print sum of all subsets

Lexicographically previous permutation With One swap

Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N

Check the completeness of given binary tree | Set 1 - Using Node Count

Check if the given binary tree is Full or not.

Maximum number edges to make Acyclic Undirected/Directed Graph

Evaluation of Prefix Expressions (Polish Notation) | Set 2

ZigZag OR Diagonal traversal in 2d array/Matrix using queue

Evaluation of Prefix Expressions (Polish Notation) | Set 1

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2

Evaluation of Postfix Expressions (Polish Postfix notation) | Set 1

Find all the numbers in the range which has prime set bits.