SDE - 1

You are given a binary tree, where the data present in each node is an integer. You have to find whether the given tree is symmetric or not.

Symme...

Given a graph, check whether the graph is bipartite or not. Your function should return true if the given graph's vertices can be di...

You have been given a long type array/list 'arr’ of size 'n’.

It represents an elevation map wherein 'arr[i]’ denotes the elevation ...

A man who lives on the tenth floor of a building takes the elevator every day to go down to the ground floor to go to work or to go shopping. When he returns in the evening, he takes the elevator to the seventh floor and walks up the stairs to the tenth floor to reach his apartment. Why does he do this? Note that if it’s a rainy day, or if there are other people in the elevator, he goes to his ...