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impl Solution {
pub fn sequential_digits(low: i32, high: i32) -> Vec<i32>
{
let candidates = [
12i32, 23, 34, 45, 56, 67, 78, 89,
123, 234, 345, 456, 567, 678, 789,
1234, 2345, 3456, 4567, 5678, 6789,
12345, 23456, 34567, 45678, 56789,
123456, 234567, 345678, 456789,
1234567, 2345678, 3456789,
12345678, 23456789,
123456789,
];
let mut result: Vec<i32> = Vec::new();
let mut i = 0;
while i < candidates.len()
{
let x = candidates[i];
if low <= x && x <= high {
result.push(x);
}
i += 1;
}
result
}
}