C Exercises: Remove the duplicates from a given array of integers
C Programming Practice: Exercise-12 with Solution
Write a C programming to remove the duplicates from a given array of integers.
C Code:
#include <stdio.h>
#include <stdlib.h>
static int remove_duplicates(int* nums, int arr_size)
{
if (arr_size <= 1) {
return arr_size;
}
int i = 0, j, count = 1;
while (i < arr_size) {
for (j = i + 1; j < arr_size && nums[i] == nums[j]; j++) {}
if (j < arr_size) {
nums[count++] = nums[j];
}
i = j;
}
return count;
}
int main(void)
{
int nums[] = {1,1,2,3,4,4,5,6,6,6};
int size = sizeof(nums)/sizeof(nums[0]);
printf("Original array:\n");
int i;
for (i = 0; i < size; i++) {
printf("%d ", nums[i]);
}
int count = remove_duplicates(nums, size);
printf("\nAfter removing duplicates from the above sorted array:\n");
for (i = 0; i < count; i++) {
printf("%d ", nums[i]);
}
printf("\n");
return 0;
}
Sample Output:
Original array: 1 1 2 3 4 4 5 6 6 6 After removing duplicates from the above sorted array: 1 2 3 4 5 6
Pictorial Presentation:
Flowchart:
C Programming Code Editor:
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Previous: Write a C programming to generate all combinations of well-formed parentheses from n given pairs of parentheses.
Next: Write a C program to remove all instances of a given value in a given array of integers and return the length of the new array.
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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