Why? what happens?

Question

Why the function sort() does not work as expected to?
What happens during the execution of the code?
How can we fix this bug?
....
static void sort(int[] arr) {
int a = 0;
for(int i : arr) {
int b = 0;
for(int j : arr) {
if(i > j) {
arr[a] = j;
arr[b] = i;
}
b++;
}
a++;
}
}
....
https://code.sololearn.com/ceMAVa9M15fM/?ref=app

Answer 1

You are missing a temporary variable to save the value of the old position for the new position. That is why the final values ​​are repeated