﻿ C : Same elements appears at the start and end of an array

# C Exercises: Check a given array of integers and return true if the specified number of same elements appears at the start and end of the given array

## C-programming basic algorithm: Exercise-66 with Solution

Write a C program to check a given array of integers. The program will return true if the specified number of the same elements appears at the start and end of the given array.

C Code:

``````#include <stdio.h>
#include <stdlib.h>

// Function prototype for 'test'
int test(int numbers[], int arr_size, int len);

int main(void){
int arr_size;

// Declaration and initialization of an integer array 'array1'
int array1[] = {3, 7, 5, 5, 3, 7};
arr_size = sizeof(array1)/sizeof(array1[0]);

// Printing the result of the 'test' function for 'array1'
printf("%d",test(array1, arr_size, 2));

// Declaration and initialization of an integer array 'array2'
int array2[] = {3, 7, 5, 5, 3, 7};
arr_size = sizeof(array2)/sizeof(array2[0]);

// Printing the result of the 'test' function for 'array2'
printf("\n%d",test(array2, arr_size, 3));

// Declaration and initialization of an integer array 'array3'
int array3[] = {3, 7, 5, 5, 3, 7, 5 };
arr_size = sizeof(array3)/sizeof(array3[0]);

// Printing the result of the 'test' function for 'array3'
printf("\n%d",test(array3, arr_size, 3));
}

// Definition of the 'test' function
int test(int numbers[], int arr_size, int len)
{
// Looping through the first 'len' elements
for (int i = 0; i < len; i++)
{
// Checking if corresponding elements from the end match
if (numbers[i] != numbers[arr_size - len + i])
{
return 0; // Return 0 if there's a mismatch
}
}

return 1; // Return 1 if all elements match
}
``````

Sample Output:

```1
0
1
```

Pictorial Presentation:

Flowchart:

C Programming Code Editor:

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