Delta Air Lines Interview Questions and Answers

You're given string ‘STR’ consisting solely of “{“, “}”, “(“, “)”, “[“ and “]” . Determine whether the parentheses are balanced.

Input Format:

The first line contains an Integer 'T' which denot...read more

You are provided with a Binary Tree and one of its leaf nodes. You have to invert this binary tree. Inversion must be done by following all the below guidelines:

• The given leaf node become...read more

Ninja has been given two sorted integer arrays/lists ‘ARR1’ and ‘ARR2’ of size ‘M’ and ‘N’. Ninja has to merge these sorted arrays/lists into ‘ARR1’ as one sorted array. You may have to a...read more

You are given a binary tree having ‘N’ number of nodes. Your task is to find the deepest leaf node in the given input tree.

Note:

The deepest leaf node is the leaf node which will be the left child...read more

You are given an integer array ‘ARR’. You have to find the length of the shortest contiguous subarray such that, if you sort this subarray in ascending order, then the whole array will be sorted in asce...read more

You are given a 32-bit signed integer ‘N’. So, the integer will lie in the range [-2^31, 2^31 - 1]. Your task is to return the reverse of the given integer. If reversing causes overflow, then ret...read more

Build a file-based key-value data store that supports the basic CRD (create, read, and delete)operations. This data store is meant to be used as local storage for one single process on one lap...read more