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impl Solution {
pub fn count_largest_group(n: i32) -> i32 {
let mut counts: Vec<i32> = Vec::new();
let mut k: usize = 0;
while k < 37
{
counts.push(0);
k = k + 1;
}
let mut i: i32 = 1;
while i <= n
{
let mut ds: i32 = 0;
let mut x: i32 = i;
while x > 0
{
ds = ds + (x % 10) as i32;
x = x / 10;
}
counts[ds as usize] = counts[ds as usize] + 1;
i = i + 1;
}
let mut max_size: i32 = 0;
let mut count: i32 = 0;
let mut j: usize = 1;
while j < 37
{
if counts[j] > max_size {
max_size = counts[j];
count = 1;
} else if counts[j] == max_size && max_size > 0 {
count = count + 1;
}
j = j + 1;
}
count
}
}