C++ Exercises: Check two given arrays of integers of length 1 or more and return true if they have the same first element or they have the same last element

Last update on December 20 2024 12:28:36 (UTC/GMT +8 hours)

Same First or Last Element in Two Arrays

Write a C++ program to check two given arrays of integers of length 1 or more. This will return true if they have the same first element or if they have the same last element.

Sample Solution:

C++ Code :

#include <iostream> // Including the input/output stream library
using namespace std; // Using the standard namespace

// Function that checks if the first element of the first array matches the first element of the second array
// or if the last element of the first array matches the last element of the second array
bool test(int a1[], int arr_length1, int a2[], int arr_length2)
{
    return a1[0] == a2[0] || a1[arr_length1 - 1] == a2[arr_length2 - 1];
    // Return true if the first element of a1 matches the first element of a2
    // or if the last element of a1 matches the last element of a2
}

// Main function
int main() 
{
    int arr_length1, arr_length2; // Declare variables to store array lengths

    int nums11[] = {10, 20, 40, 50}; // Define an array nums11
    int nums12[] = {10, 20, 40, 50}; // Define an array nums12
    arr_length1 = sizeof(nums11) / sizeof(nums11[0]); // Calculate the length of nums11
    arr_length2 = sizeof(nums12) / sizeof(nums12[0]); // Calculate the length of nums12
    cout << test(nums11, arr_length1, nums12, arr_length2) << endl; // Output result of test function for nums11 and nums12

    int nums21[] = {10, 20, 40, 50}; // Define an array nums21
    int nums22[] = {10, 20, 40, 5}; // Define an array nums22
    arr_length1 = sizeof(nums21) / sizeof(nums21[0]); // Calculate the length of nums21
    arr_length2 = sizeof(nums22) / sizeof(nums22[0]); // Calculate the length of nums22
    cout << test(nums11, arr_length1, nums12, arr_length2) << endl; // Output result of test function for nums21 and nums22

    int nums31[] = {10, 20, 40, 50}; // Define an array nums31
    int nums32[] = {1, 20, 40, 5}; // Define an array nums32
    arr_length1 = sizeof(nums31) / sizeof(nums21[0]); // Calculate the length of nums31
    arr_length2 = sizeof(nums32) / sizeof(nums22[0]); // Calculate the length of nums32
    cout << test(nums31, arr_length1, nums32, arr_length2) << endl; // Output result of test function for nums31 and nums32

    return 0; // Return statement indicating successful termination of the program
}

Sample Output:

1
1
0

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