Can someone explain how this segment pf code works? Thank you!

Question

import java.util.Scanner;

public class Main{

public static void main(String args[]){

int [][] arr = {{5,2,6},{1,3,8},{7,0,4}};
int y = arr[1][0];
int x = arr[2][1];
int z = arr[--y][++x];
System.out.println(z);
}

}

Answer 1

Arr is a multidimensional array, it means that have an array/s into another array

after the arr declaration arr values are that:
arr[0][0]=5
arr[0][1]=2
arr[0][2]=6
arr[1][0]=1
arr[1][1]=3
arr[1][2]=8
. . . so on.

-- and ++ operators before a variable, increments or decrement the value before an operation, it means that if you do:
int x =5;
System.out.println(++x + 5);
The result will be 6 + 5: 11.
Because you increment x before the sum operation.

So let's solve the problem:
int y = arr[1][0] = 1
because arr[1][0] value is 1, I explained it at the beggining
int x = arr[2][1] = 0

int z = arr[--y][++x] = 2
because you are decrementing y and incrementing x before access the array index

So if y value is 1 and you do --y it comes 0
the same with x, if x value is 0 and you do ++x it comes 1

then
int z = arr[0][1] = 2

Hope it helps you!!

Answer 2

explained it like a true genius !!