int[] a = {4,7,1,89,43,12};
for (int i = a.length; i > 0; i--) {
for (int j = 0; j < i - 1; j++) {
if (a[j] > a[j+1]){
int temp = a[j];
a[j] = a[j+1];
a[j+1] = temp;
}
}
}
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