C Exercises: Segregate even and odd elements on an array
C Array: Exercise-96 with Solution
Write a program in C to segregate even and odd elements in an array.
Sample Solution:
C Code:
#include<stdio.h>
void changePlace (int *ar, int *br);
void EvenOddSegre(int arr1[], int size)
{
int l_index = 0, r_index = size-1;
while (l_index < r_index)
{
while (arr1[l_index]%2 == 0 && l_index < r_index)
l_index++;
while (arr1[r_index]%2 == 1 && l_index < r_index)
r_index--;
if (l_index < r_index)
{
changePlace(&arr1[l_index], &arr1[r_index]);
l_index++;
r_index--;
}
}
}
void changePlace(int *ar, int *br)
{
int temp = *ar;
*ar = *br;
*br = temp;
}
int main()
{
int arr1[] = {17, 42, 19, 7, 27, 24, 30, 54, 73};
int arr_size = sizeof(arr1)/sizeof(arr1[0]);
int i = 0;
//------------- print original array ------------------
printf("The given array is: \n");
for(i = 0; i < arr_size; i++)
{
printf("%d ", arr1[i]);
}
printf("\n");
//-----------------------------------------------------------
EvenOddSegre(arr1, arr_size);
printf("The array after segregation is: ");
for (i = 0; i < arr_size; i++)
printf("%d ", arr1[i]);
return 0;
}
Sample Output:
The given array is: 17 42 19 7 27 24 30 54 73 The array after segregation is: 54 42 30 24 27 7 19 17 73
Pictorial Presentation:
Flowchart:

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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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