Category: Google Interview

0

Given an array arrA[], find the maximum j – i such that arr[j] > arr[i].

Objective: Given an array arrA[], find the maximum j – i such that arr[j] > arr[i]. Example: int[] arrA = { 12, 3, 1, 5, 6, 4, 10, 9, 8, 0 }; Output: Max(j-i)...

7

Find All Elements in an Array which appears more than N/K times, N is Array Size and k is a Number.

Objective: Given an array of size of N and number k. Find all elements in an Array which appears more than N/K times. Input: Array [] and number k. Example: int[] arrA = {...

0

Print All The Nodes Which are X distance from the Given Node

Objective: – Given Binary Tree, Print All The Nodes Which are X distance from the Given Node. Example : Approach: Quite Tricky solution, i will explain using the example given in the picture.

2

Lowest Common Ancestor in a Binary Tree (Not Binary Search Tree).

Objective: – Find the Lowest Common Ancestor of two given nodes in a Binary Tree What is Lowest Common Ancestor In a given binary tree, The lowest common ancestor of two nodes n1 and...

1

Lowest Common Ancestor in a Binary Search Tree.

Objective: – Find the Lowest Common Ancestor of two given nodes in a Binary Search Tree What is Lowest Common Ancestor In a given binary tree, The lowest common ancestor of two nodes n1...

2

Make a Binary Tree from Given Inorder and Preorder Traveral.

Objective: – Given a inorder and preorder traversal, construct a binary tree from that. Input: Inorder and preorder traversals Similar Problem: Construct a binary tree from given Inorder and Postorder Traversal Approach: int []...

1

Inorder Successor in Binary Search Tree without Using Parent link

Objective: Given a Binary Search tree, find the inorder successor of a node. What is Inorder Successor: Inorder successor of a node is the next node in the inorder traversal of the tree. For...

2

Inorder Successor in Binary Search Tree Using Parent link

Algorithms – Inorder Successor in Binary Search Tree Using Parent link Objective: Given a Binary Search tree in which every node has a link to its parent, find the inorder successor of a node....

0

Inorder Successor in Binary Tree

Algorithms – Inorder Successor in Binary Tree Objective: Given a Binary tree (Not binary Search Tree ), find the inorder successor of a node. What is Inorder Successor: Inorder successor of a node is...

1

In a Binary Tree, Create Linked Lists of all the nodes at each depth.

Objective: Given a Binary tree create Linked Lists of all the nodes at each depth , say if the tree has height k then create k linked lists. NOTE : This problem is very...

6

Level Order Traversal, Print each level in separate line.

Objective: Given a Binary tree , Print each level of a tree in separate line. NOTE : This problem is very similar ” Create Linked Lists of all the nodes at each depth “...

5

Rearrange Positive and Negative Numbers of Array On Each Side in O(nlogn)

Objective: Rearrange Positive and Negative Numbers of an Array so that one side you have positive numbers and other side with negative Integers without changing their respective order. Example : Input :  1 -2...

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