C Exercises: Replace every element with the greatest element on its right side
C Array: Exercise-63 with Solution
Write a program in C to replace every element with the greatest element on its right side.
Visual Presentation:

Sample Solution:
C Code:
#include <stdio.h>
// Function to print the elements of an array
void printArray(int a[], int n) {
for (int i = 0; i < n; i++)
printf("%d ", a[i]);
}
// Function to replace each element with the next greatest element
void replaceWithNextGreatest(int a[], int size) {
int maximum = a[size - 1]; // Initialize maximum as the last element
a[size - 1] = 0; // Update the last element to 0 as there is no greater element
// Iterate through the array from right to left
for (int i = size - 2; i >= 0; i--) {
int temp = a[i]; // Store the current element temporarily
a[i] = maximum; // Replace the current element with the maximum
if (maximum < temp)
maximum = temp; // Update maximum if the current element is greater
}
printf("After replacing, the modified array is: ");
printArray(a, size); // Print the modified array
}
int main() {
int i, arr1[] = {7, 5, 8, 9, 6, 8, 5, 7, 4, 6};
int n = sizeof(arr1) / sizeof(arr1[0]);
//------------- print original array ------------------
printf("The given array is : ");
for (i = 0; i < n; i++) {
printf("%d ", arr1[i]);
}
printf("\n");
//------------------------------------------------------
// Replace each element with the next greatest element
replaceWithNextGreatest(arr1, n);
return 0;
}
Sample Output:
The given array is : 7 5 8 9 6 8 5 7 4 6 After replace the modified array is: 9 9 9 8 8 7 7 6 6 0
Flowchart:

C Programming Code Editor:
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