# Status Problem video Level Completes Likes
527

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

Beginner % 1
468

Unique subsets with a given sum with allowed repeated digits.

Medium % 0
465

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

Medium % 0
463

Combinations with sum K from a given number N with repetition

Medium % 0
457

Given an array, print all unique subsets with a given sum.

Medium % 0
454

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

Medium % 0
445

Depth-First Search (DFS) in 2D Matrix/2D-Array - Recursive Solution

Beginner % 1
442

Find the number of distinct Islands OR connected components.

Hard % 0
440

Given an array, Print sum of all subsets

Beginner % 1
436

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

Medium % 0
428

Collatz Conjecture - Maximum Steps takes to transform (1, N) to 1.

Medium % 0
427

Number of Islands using BFS

Medium % 0
408

Number of Islands

Medium % 1
407

Integer Replacement Problem

Medium % 0
399

Round Price Problem

Hard % 0
392

Reverse a Stack using recursion - In Place (Without using extra memory)

Hard % 1
376

Collatz Conjecture - Steps to transform Number to 1

Beginner % 0
353

Reverse a given number

Beginner % 1
343

Generate all the strings of length n from 0 to k-1

Medium % 0
290

Reverse a String using Recursion

Beginner % 0
280

Graph – Find Cycle in Undirected Graph using Disjoint Set (Union-Find)

Hard % 0
267

Graph – Depth First Search using Recursion

Beginner % 1
252

Text Justification Problem (OR Word Wrap Problem) - Leetcode 68

Hard % 0
249

Divide and Conquer - Rearrange array elements in special order

Medium % 0
233

Find the local minima in a given array

Medium % 0
231

Check if array is sorted using recursion

Beginner % 0
222

Maximum Subarray OR Largest Sum Contiguous Subarray Problem – Divide and Conquer

Hard % 0
221

Identifying Maximum Gain from Sequential Elements

Medium % 0

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

Unique subsets with a given sum with allowed repeated digits.

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

Combinations with sum K from a given number N with repetition

Given an array, print all unique subsets with a given sum.

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

Depth-First Search (DFS) in 2D Matrix/2D-Array - Recursive Solution

Find the number of distinct Islands OR connected components.

Given an array, Print sum of all subsets

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

Collatz Conjecture - Maximum Steps takes to transform (1, N) to 1.

Number of Islands using BFS

Number of Islands

Integer Replacement Problem

Round Price Problem

Reverse a Stack using recursion - In Place (Without using extra memory)

Collatz Conjecture - Steps to transform Number to 1

Reverse a given number

Generate all the strings of length n from 0 to k-1

Reverse a String using Recursion

Graph – Find Cycle in Undirected Graph using Disjoint Set (Union-Find)

Graph – Depth First Search using Recursion

Text Justification Problem (OR Word Wrap Problem) - Leetcode 68

Divide and Conquer - Rearrange array elements in special order

Find the local minima in a given array

Check if array is sorted using recursion

Maximum Subarray OR Largest Sum Contiguous Subarray Problem – Divide and Conquer

Identifying Maximum Gain from Sequential Elements