# Interview Questions asked in Goldman Sachs

##### Boundary Traversal Of Binary Tree EASY

Perform boundary trversal on a given binary tree.

Binary Tree Recursion##### Deletion In Binary Search Tree MEDIUM

Delete a node from BST (Binary Search Tree) such that the resultant tree is also a BST.

Binary Tree Recursion##### Longest Subarray With Zero Sum MEDIUM

Given an array of integers, find the length of the longest subarray whose sum is 0.

Array Binary Search##### Connect Siblings In Binary Tree MEDIUM

Given a binary tree, connect the sibling nodes at each level.

Binary Tree Queue##### Construct Binary Tree From Its PreOrder And InOrder MEDIUM

Given pre-order & in-order traversal of a binary tree, construct the tree.

Binary Tree Recursion##### Search In A Rotated Sorted Array MEDIUM

Given a sorted array of integers rotated k times, check if given key is present in it?

Array Binary Search##### Pair That Adds Up To Given Number MEDIUM

Given an array of integers and a sum, find a pair that adds up to the sum given.

Array