C Exercises: Find the smallest missing element from a sorted array
C Array: Exercise-42 with Solution
Write a program in C to find the smallest missing element in a sorted array.
Pictorial Presentation:

Sample Solution:
C Code:
#include <stdio.h>
int MissingSmallElement(int arr1[], int low_index, int high_index)
{
if (low_index > high_index)
return low_index;
int mid_index = low_index + (high_index - low_index) / 2;
if (arr1[mid_index] == mid_index) // the mismatch lies on the right half
return MissingSmallElement(arr1, mid_index + 1, high_index);
else // mismatch lies on the left half
return MissingSmallElement(arr1, low_index, mid_index - 1);
}
int main()
{
int arr1[] = { 0, 1, 3, 4, 5, 6, 7, 9 };
int ctr = sizeof(arr1) / sizeof(arr1[0]);
int i;
//------------- print original array ------------------
printf("The given array is : ");
for(i = 0; i < ctr; i++)
{
printf("%d ", arr1[i]);
}
printf("\n");
//-----------------------------------------
int low_index = 0, high_index = ctr - 1;
printf("The missing smallest element is: %d",
MissingSmallElement(arr1, low_index, high_index));
return 0;
}
Sample Output:
The given array is : 0 1 3 4 5 6 7 9 The missing smallest element is: 2
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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