C++ Exercises: Find the element that appears once in an array of integers and every other element appears twice
C++ Array: Exercise-23 with Solution
Write a C++ program to find the element that appears once in an array of integers and every other element appears twice.
Pictorial Presentation:
Sample Solution:
C++ Code :
#include <iostream>
using namespace std;
int search_single_element(int array1[], int s1)
{
int result = array1[0];
for (int i = 1; i < s1; i++)
result = result ^ array1[i];
return result;
}
int main()
{
int array1[] = {3, 1, 5, 1, 5, 7, 9, 7, 9};
int se;
int s1 = sizeof(array1) / sizeof(array1[0]);
cout << "Original array: ";
for (int i=0; i < s1; i++)
cout << array1[i] <<" ";
se = search_single_element(array1, s1);
cout <<"\nSingle element: " << se;
return 0;
}
Sample Output:
Original array: 3 1 5 1 5 7 9 7 9 Single element: 3
Flowchart:
C++ Code Editor:
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