problem no 21: count the number of occurances of the number X in array.

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 QUESTION:

Number of occurrence

Given a sorted array Arr of size N and a number X, you need to find the number of occurrences of X in Arr.

Example 1:

Input:
N = 7, X = 2
Arr[] = {1, 1, 2, 2, 2, 2, 3}
Output: 4
Explanation: 2 occurs 4 times in the
given array.

Example 2:

Input:
N = 7, X = 4
Arr[] = {1, 1, 2, 2, 2, 2, 3}
Output: 0
Explanation: 4 is not present in the
given array.

 

 ANSWER:

int count(int arr[], int n, int x) {
        int count=0;
        for(int i=0;i<n;i++)
        {
            if(arr[i]==x)
            {
                count+=1;
            }
        }
        return count;
    }

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