class Program {
private static boolean not_decreasingin(int[] arr) {
int size = arr.length;
for (int i = 0; i < size - 1; i++) {
if (arr[i] > arr[i + 1]) {
return false;
}
}
return true;
}
public static void main(String[] args) {
int[] arr = {1, 3, 7, 9, 10, 13, 28, 31, 48, 50, 70, 91};
System.out.print(not_decreasingin(arr) ? "true" : "false");
}
}
/*
run:
true
*/