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Create Union.cpp #293

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44 changes: 44 additions & 0 deletions Cpp/Union.cpp
Original file line number Diff line number Diff line change
@@ -0,0 +1,44 @@
#include <bits/stdc++.h>
using namespace std;

/* Function prints union of arr1[] and arr2[]
m is the number of elements in arr1[]
n is the number of elements in arr2[] */
void printUnion(int arr1[], int arr2[], int m, int n)
{
int i = 0, j = 0;
while (i < m && j < n) {
if (arr1[i] < arr2[j])
cout << arr1[i++] << " ";

else if (arr2[j] < arr1[i])
cout << arr2[j++] << " ";

else {
cout << arr2[j++] << " ";
i++;
}
}

/* Print remaining elements of the larger array */
while (i < m)
cout << arr1[i++] << " ";

while (j < n)
cout << arr2[j++] << " ";
}

/* Driver program to test above function */
int main()
{
int arr1[] = { 1, 2, 4, 5, 6 };
int arr2[] = { 2, 3, 5, 7 };

int m = sizeof(arr1) / sizeof(arr1[0]);
int n = sizeof(arr2) / sizeof(arr2[0]);

// Function calling
printUnion(arr1, arr2, m, n);

return 0;
}