lab3 con[1]

void setup () {
  int []K = {
    4, 8, 5
  }; //your array
  int []R = {
    0, 1, 2
  }; //array of index
  int n = 4;//number you want to know
  int a = 0;
  for (int i = 0; i<K.length; i++) {
    if (n==K[i]) {
      println(K[i]+" has index = " +R[i]+" in K") ;
      a=a+K.length;//N
    } else if (n!=K[i])
      a=a-1;
  }
  if (a<=-1) {
    println(n+" is not in K");
  }
}