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Help with understanding this code (Java)

I can't figure out why the output is 0 0 3 0 1 public class Program { public static void main(String[] args) { int[] a = {1,2,3,4,1}; for(int n : a) a[n] = 0; for(int n : a) System.out.println(n); } }

11th Oct 2020, 7:12 PM
Federico Riva
2 ответов
+ 3
In line a[n]=0 you are using array values as index. Step 1: n=1 (first value in array) a[1]=0 array: [1, 0, 3, 4, 1] Step 2: n=0 (2 was replaced by 0 in step 1) a[0]=0 array:[0, 0, 3, 4, 1] Step 3: n=3 a[3]=0 array:[0, 0, 3, 0, 1] And so on
11th Oct 2020, 7:29 PM
Aleksandrs
Aleksandrs - avatar
0
Aleksandrs thanks now I understand
11th Oct 2020, 7:35 PM
Federico Riva