# Status Problem video Level Completes Likes
241

Separate even and odd integers in a given array

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238

Separate 0’s and 1’s in a given array

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237

Find three elements in an array that sum to a zero

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236

Find three elements in an array that sum to a given value

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234

Majority Element – Part 1

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232

Check whether the given number is a perfect square

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231

Check if array is sorted using recursion

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230

Find the Index from which 0 starts

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229

Find the increasing OR decreasing point in an array

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228

Find the only element in array which appears only once

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227

Algorithm to calculate power(k,n).

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226

Find remainder without using modulo operator

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225

Swap two numbers without using extra variable

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224

Number of 1’s in bit representation of a number

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220

Find the right most unset bit OR zero bit of a number

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218

Find the right most set bit of a number

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214

Find the last non repeating character in a given string.

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213

Find the last repeating character in a given string

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212

Find the first non repeating character in a given string

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211

Find the first repeating character in a given string

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206

Reverse the given Array without using built in function

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193

Implement Stack Using Linked List

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192

Doubly Linked List Complete Implementation

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191

Circular Linked List Complete Implementation

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184

Get the Sum of all left leaves in a Binary tree

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182

Binary Tree-Postorder Traversal - Non Recursive Approach

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181

Binary Tree - Preorder Traversal - Non Recursive Approach

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180

Binary Tree-Inorder Traversal - Non Recursive Approach

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179

Delete the Binary Tree

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178

Search the Element in a binary tree - With and Without Recursion

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177

Tree Traversals

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176

Find the Size of a Binary Tree without Recursion

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155

Find the Kth Smallest/Largest Element in an Array

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154

Priority Queue in Data Structure

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153

Find the Second Largest Element in an Array

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Separate even and odd integers in a given array

Separate 0’s and 1’s in a given array

Find three elements in an array that sum to a zero

Find three elements in an array that sum to a given value

Majority Element – Part 1

Check whether the given number is a perfect square

Check if array is sorted using recursion

Find the Index from which 0 starts

Find the increasing OR decreasing point in an array

Find the only element in array which appears only once

Algorithm to calculate power(k,n).

Find remainder without using modulo operator

Swap two numbers without using extra variable

Number of 1’s in bit representation of a number

Find the right most unset bit OR zero bit of a number

Find the right most set bit of a number

Find the last non repeating character in a given string.

Find the last repeating character in a given string

Find the first non repeating character in a given string

Find the first repeating character in a given string

Reverse the given Array without using built in function

Implement Stack Using Linked List

Doubly Linked List Complete Implementation

Circular Linked List Complete Implementation

Get the Sum of all left leaves in a Binary tree

Binary Tree-Postorder Traversal - Non Recursive Approach

Binary Tree - Preorder Traversal - Non Recursive Approach

Binary Tree-Inorder Traversal - Non Recursive Approach

Delete the Binary Tree

Search the Element in a binary tree - With and Without Recursion

Tree Traversals

Find the Size of a Binary Tree without Recursion

Find the Kth Smallest/Largest Element in an Array

Priority Queue in Data Structure

Find the Second Largest Element in an Array