C Exercises: Find the equilibrium index of an array
C Array: Exercise-86 with Solution
Write a program in C to find the equilibrium index of an array.
Sample Solution:
C Code:
#include <stdio.h>
void findEquiIndex(int arr1[], int n)
{
int sumofleft[n];
sumofleft[0] = 0;
for (int i = 1; i < n; i++)
{
sumofleft[i] = sumofleft[i - 1] + arr1[i - 1];
}
int sumofright = 0;
for (int i = n - 1; i >= 0; i--)
{
if (sumofleft[i] == sumofright)
{
printf("%d ",i);
}
sumofright += arr1[i];
}
}
int main()
{
int arr1[] = { 0, -4, 7, -4, -2, 6, -3, 0 };
int n = sizeof(arr1) / sizeof(arr1[0]);
int i;
//------------- print original array ------------------
printf("The given array is: \n");
for(i = 0; i < n; i++)
{
printf("%d ", arr1[i]);
}
printf("\n");
//-----------------------------------------------------------
printf("The equilibrium index found at : ");
findEquiIndex(arr1, n);
return 0;
}
Sample Output:
The given array is: 0 -4 7 -4 -2 6 -3 0 The equilibrium index found at : 7 5 0
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Flowchart:

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Next: Write a program in C to find the maximum element in an array which is first increasing and then decreasing.
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C Programming: Tips of the Day
C Programming - What is the argument for printf that formats a long?
Put an l (lowercased letter L) directly before the specifier.
unsigned long n; long m; printf("%lu %ld", n, m);
Ref : https://bit.ly/3dIwfkP
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