Dsa
Binary Search
Warm-up
Count Number of Ones
Given a sorted binary array (containing only 0s and 1s), find the count of 1s in the array.
Input Format:
- The first line contains an integer n, the number of elements in the array.
- The second line contains n space-separated integers (0 or 1).
Output Format:
- Print the count of 1s in the array.
Example:
Input:
5
0 0 1 1 1
Output:
3
Key concepts
binary_searcharrayssearch
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