Finding the intersection of two arrays [closed]

Answer 1

You can take a help of temporary variable (but this is basically reinventing the wheel, if you are not required to do so) -

int[] c = new int[0];
//...
    if(a[f] == b[k]) { 
        int[] temp = c;
        c = new int[c.length + 1];
        for(int i=0; i