w3resource

C++ Exercises: Check a given array of integers and return true if there is a 3 with a 5 somewhere later in the given array

C++ Basic Algorithm: Exercise-110 with Solution

Write a C++ program to check a given array of integers and return true if there is a 3 with a 5 somewhere later in the given array.

Sample Solution:

C++ Code :

#include <iostream>
using namespace std;

static bool test(int nums[], int arr_length)
        {
          bool three = false;

            for (int i = 0; i < arr_length; i++)
            {
                if (three && nums[i] == 5) return true;
                if (nums[i] == 3) three = true;
            }
            return false;
          }   
          
int main() 
 {  
  int nums1[] = {3, 5, 1, 3, 7};
  int arr_length = sizeof(nums1) / sizeof(nums1[0]);
  cout << test(nums1, arr_length) << endl; 
  int nums2[] = {1, 2, 3, 4};
  arr_length = sizeof(nums2) / sizeof(nums2[0]);
  cout << test(nums2, arr_length) << endl;
  int nums3[] = {3, 3, 5, 5, 5, 5};
  arr_length = sizeof(nums3) / sizeof(nums3[0]);
  cout << test(nums3, arr_length) << endl;
  int nums4[] = {2, 5, 5, 7, 8, 10};
  arr_length = sizeof(nums4) / sizeof(nums4[0]);
  cout << test(nums4, arr_length) << endl;
  return 0;    
}

Sample Output:

1
0
1
0

Pictorial Presentation:

C++ Basic Algorithm Exercises: Check a given array of integers and return true if there is a 3 with a 5 somewhere later in the given array.

Flowchart:

Flowchart: Check a given array of integers and return true if there is a 3 with a 5 somewhere later in the given array.

C++ Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a C++ program to check if an array of integers contains a 3 next to a 3 or a 5 next to a 5 or both.
Next: Write a C++ program to check a given array of integers and return true if the given array contains either 2 even or 2 odd values all next to each other.

What is the difficulty level of this exercise?