
Asked in Amdocs
Subarray with Equal Occurrences Problem Statement
You are provided with an array/list ARR
of length N
containing only 0s and 1s. Your goal is to determine the number of non-empty subarrays where the number of 0s is equal to the number of 1s.
Input:
The first line contains an integer 'T' indicating the number of test cases. Each test case consists of:
- The first line contains a positive integer 'N', the length of the array/list.
- The second line contains 'N' space-separated integers representing the elements of the array/list.
Output:
For each test case, output a single line with the count of subarrays in which the number of 0s and 1s are equal. Provide the output for each test case on a new line.
Example:
Input:
2
4
0 1 0 1
5
1 0 0 1 1
Output:
4
2
Constraints:
1 <= T <= 100
1 <= N <= 5 * 10^3
0 <= ARR[i] <= 1
- Time limit: 1 sec
Note:
There is no need to print the expected output; it is handled automatically. Focus on implementing the solution function.

AnswerBot
4mo
Count the number of subarrays where the number of 0s is equal to the number of 1s in a given array of 0s and 1s.
Iterate through the array and keep track of the count of 0s and 1s encountered so far.
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