# C Programming – HackerRank Solution | Maximum of an array power of 2 |

### (HackerRank) Write a Modular C Programming code to solve the Maximum of an array power of 2, Given an array of ‘N’ integers check if the maximum of an array is a power of 2 or not

Given an array of ‘N’ integers check if the maximum of an array is a power of 2 or not.

Input Format

First Line contains ‘N’ the number of array elements.

Second-line contains ‘N’ array elements separated by space.

Constraints

N>0 and N<=10^5

0

Output Format

Display YES if the maximum number is the power of 2, else display NO

Sample Input 0

```-1
```

Sample Output 0

```Invalid
```

Sample Input 1

```7
10 11 12 13 14 15 16
```

Sample Output 1

```YES
```

Explanation 1

``Maximum element of an array is 16, which is power of 2. (2 power 4 = 16)``

CODE:

```#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>

void maximum(int a[],int n)
{
int status=0,max=0;
for(int i=0;i<n;i++)
{
if(max<a[i])
{
max=a[i];
}
}
for(int i=1;i<60;i++) { if(max==pow(2,i)) { status=1; break; } } if(status==1) { printf("YES\n"); } else printf("NO\n"); } int main() { int n,a,i; scanf("%d",&n); if(n>0&&n<=100000)
{
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
maximum(a,n);
}
else
{
printf("Invalid");
}
return 0;
}

```

OUTPUT

```Congratulations, you passed the sample test case.

Click the Submit Code button to run your code against all the test cases.

Input (stdin)

-1

Invalid
Expected Output

Invalid```

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