Wave Array Interviewbit Solution

Problem: Wave Array

Problem Description:

Given an array of integers, sort the array into a wave like array and return it, In other words, arrange the elements into a sequence such that

a1 >= a2 <= a3 >= a4 <= a5.....

Example

Given [1, 2, 3, 4]  
One possible answer : [2, 1, 4, 3] 
Another possible answer : [4, 1, 3, 2]

NOTE : If there are multiple answers possible, return the one that's lexicographically smallest. So, in the example case, you will return [2, 1, 4, 3]

Solution:

Comments

Maximum Area of Triangle! InterviewBit Solution

Given a character matrix of size N x M in the form of a string array A of size N where A[i] denotes ith row. Each character in the matrix co

Locking Unlocking of N-ary Tree

Given an n-ary tree of resources arranged hierarchically such that the height of the tree is O(log N) where N is a total number of nodes...

Counting Triangles - InterviewBit Solution

You are given an array of N non-negative integers, A0, A1 ,…, AN-1.Considering each array element Ai as the edge length of some line segment

3 Sum Zero - InterviewBit Solution

Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives

3 Sum - InterviewBit Solution

Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target.