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All Problems

# Status Problem video Level Completes Likes
541

Find an extra element in two almost similar arrays

Beginner % 5
540

find the Arithmetic Progression sequence

Beginner % 3
539

Find the Nth-term in a given arithmetic progression

Beginner % 1
536

Given an array, rank its elements

Beginner % 3
525

Find the number of pairs with odd XOR

Beginner % 2
516

Count similar words in a given array

Beginner % 1
123

Colorful Numbers

Hard % 2
535

Find Three Consecutive Odd Numbers in an array

Beginner % 2
531

Convert a Decimal number to its binary representation

Beginner % 1
530

Maximum Consecutive Ones in a given array

Beginner % 0
527

In a number, add digits until it becomes a single digit

Beginner % 1
496

Minimum number of times String A is repeated to such that B is substring of A

Beginner % 1
549

Dynamic Programming - Minimum Cost for Climbing Stairs

Medium % 0
545

Maximizing Contiguous Ones with a Single Flip in a Binary Array

Medium % 3
513

Sort 0, 1, 2 in an array - Part 1

Beginner % 1
151

Breadth-First Search/Traversal in a Binary Tree

Beginner % 0
58

All Permutations of a String

Hard % 0
36

Find the Maximum Depth OR Height of a Binary Tree

Beginner % 1
551

Reverse a linked list using stack

Medium % 0
548

Minimum Number of Halls Required for Lecture Scheduling

Hard % 1
547

Maximum Contiguous ones after one deletion

Medium % 1
537

Departure and Destination Cities in a given itinerary

Beginner % 2
534

Convert to Non-decreasing Array with one change

Beginner % 1
529

Duplicate even elements in an array

Beginner % 1
528

Minimum Increments to make all array elements unique

Medium % 0
523

Add digits until the number becomes a single digit

Beginner % 0
522

Check If Student is eligible for an Attendance Reward

Beginner % 0
520

Remove Duplicates in a given Sorted Array

Beginner % 0
518

Replace Elements with Greatest Element on Right

Beginner % 0
517

Count number of pairs in an array with sum = K

Medium % 0
515

Maximum distance from the nearest person

Medium % 1
509

Find the Number of Contiguous Parking Areas

Medium % 1
503

Minimum Deletions to make the occurrence of each character unique.

Hard % 1
499

Compare two version numbers of a software

Medium % 1
493

Maximum meetings in one room

Medium % 0

Find an extra element in two almost similar arrays

find the Arithmetic Progression sequence

Find the Nth-term in a given arithmetic progression

Given an array, rank its elements

Find the number of pairs with odd XOR

Count similar words in a given array

Colorful Numbers

Find Three Consecutive Odd Numbers in an array

Convert a Decimal number to its binary representation

Maximum Consecutive Ones in a given array

In a number, add digits until it becomes a single digit

Minimum number of times String A is repeated to such that B is substring of A

Dynamic Programming - Minimum Cost for Climbing Stairs

Maximizing Contiguous Ones with a Single Flip in a Binary Array

Sort 0, 1, 2 in an array - Part 1

Breadth-First Search/Traversal in a Binary Tree

All Permutations of a String

Find the Maximum Depth OR Height of a Binary Tree

Reverse a linked list using stack

Minimum Number of Halls Required for Lecture Scheduling

Maximum Contiguous ones after one deletion

Departure and Destination Cities in a given itinerary

Convert to Non-decreasing Array with one change

Duplicate even elements in an array

Minimum Increments to make all array elements unique

Add digits until the number becomes a single digit

Check If Student is eligible for an Attendance Reward

Remove Duplicates in a given Sorted Array

Replace Elements with Greatest Element on Right

Count number of pairs in an array with sum = K

Maximum distance from the nearest person

Find the Number of Contiguous Parking Areas

Minimum Deletions to make the occurrence of each character unique.

Compare two version numbers of a software

Maximum meetings in one room