public static void bubbleSort(int[] arr){
for (int i = 0; i < arr.length; i++) {
for (int j = 0; j < arr.length - 1 - i; j++) {
if(arr[j] > arr[j+1]){
int temp = arr[j];
arr[j] = arr[j+1];
arr[j+1] = temp;
}
}
}
}
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