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  1. #include<stdio.h>
  2.  
  3. void findIntersection(int arr1[], int m, int arr2[], int n)
  4. {
  5.     // An array to store the intersection elements
  6.     int intersection_array[50] = {0};
  7.     int counter = 0;
  8.  
  9.     int i = 0, j = 0;
  10.  
  11.     // Loop through the elements
  12.     while (i < m && j < n)
  13.     {
  14.         if (arr1[i] > arr2[j])
  15.         {
  16.             // Increase iterator for array 2
  17.             j++;
  18.         }
  19.         else if (arr2[j] > arr1[i])
  20.         {
  21.             // Increase iterator for array 1
  22.             i++;
  23.         }
  24.         else
  25.         {
  26.             intersection_array[counter] = arr1[i];
  27.             counter++;
  28.  
  29.             // Increment counter for both arrays
  30.             i++;
  31.             j++;
  32.         }
  33.     }
  34.  
  35.     for(i = 0; i<counter; i++)
  36.         printf("%d ",intersection_array[i]);
  37. }
  38.  
  39. int main(void)
  40. {
  41. 	int arr1[] = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20};
  42. 	int arr2[] = {3, 6, 9, 12, 15, 18, 21};
  43.  
  44. 	findIntersection(arr1, 10, arr2, 7);
  45.  
  46. 	return 0;
  47. }
Success #stdin #stdout 0s 2052KB
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6 12 18
https://ideone.com/65YzKi
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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