what does this code snippet do

Question

for (int i = 0; i < size - 1; i++) {
for (int j = 0; j < size - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}

please detail

Answer 1

please google Bubblesort

Answer 2

Sorting..
See this.. For all sorting algorithms...
https://www.sololearn.com/learn/774/?ref=app