Timer is Running

Flip Bits
Submissions: 13639   Accuracy:


  Difficulty: Easy   Marks: 2

Given an array arr[] consisting of 0’s and 1’s. A flip operation is one in which you turn 1 into 0 and a 0 into 1.You have to do atmost one “Flip” operation of a subarray. Then finally display maximum number of 1 you can have in the array.

The first line of input consist of a single integer T denoting the total number of test case. First line of test case contains an integer N size of array. Second line of test case contains N space separated integers denoting the array arr[].

For each test case output a single integer representing  the maximum number of 1's you can have in the array after atmost one flip operation.

1 <= T = 100
1 <= N <= 104
0 <= arr[i] <= 1


1 0 0 1 0 


We can perform a flip operation in the range [1,2]
After flip operation array is : 1 1 1 1 0



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

Contributor: Pranay Pandey
Author: pra1nay7_313

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.