A difference of values and indexes
Submissions: 850   Accuracy:


  Difficulty: Medium   Marks: 4

Given a unsorted array, you need to find the maximum difference of absolute values of elements and indexes, i.e., for i < j, calculate maximum of | A[i] - A[j] | + | i - j |. 

Input: The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case consists of two lines. The first line of each test case contains N where N is the size of array. The second line of each test case contains N space separated integers denoting the array elements.

Output: For each testcase in the new line, print the maximum diiference as given in question.

1 <= T <= 100
1 <= N <= 106
0 <= |A[i]| <= 106


1 3 -1

Testcase 1:
Maximum difference comes from indexes 1, 2 i.e | 3 - (-1) | + | 1 - 2 | = 5

** For More Input/Output Examples Use 'Expected Output' option **

Author: SIDG

If you have purchased any course from GeeksforGeeks then please ask your doubt on course discussion forum. You will get quick replies from GFG Moderators there.

Need help with your code? Please use ide.geeksforgeeks.org, generate link and share the link here.

to report an issue on this page.