I have a vector u8, and I try to count the number that occurs the maximum number of times:

```
use std::collections::HashMap;
fn main() {
let v:Vec<u8> = vec![1,2,3,6,7,8,9,4,3,5,4,6,7,8,3,5,6,2,3,4,5,6,7,5,6];
let a = exercise1(v);
println!("average - {}, middle - {}, max_count key - {}",a[0],a[1],a[2])
//println!("vec = {:?}",v);
}
pub fn exercise1(v: Vec<u8>) -> [u8; 3] {
let mut sum: u8 = 0;
let mut i = 0;
let mut map = HashMap::new();
for number in v.iter() {
sum += number;
i += 1;
let count = map.entry(number).or_insert(0);
*count +=1;
}
let average = sum/i as u8;
let j = i/2;
println!("{:?}", map);
let mut max_count: u8 =0;
for (_key, value) in &map {
//println!("{:?}:{:?}",key,value);
if value > &max_count {
max_count = *value;
}
}
println!("max_count = {:?}", max_count);
let mut max_key: u8 = 0;
for (_key, value) in &map {
//println!("{:?}:{:?}",key,value);
if value == &max_count {
max_key = **_key;
}
}
let a: [u8; 3]=[average,v[j],max_key];
return a;
}
```

If I run the script:

```
eyegor@twdevel:~/devel/rust/study/exercises/exercise1$ cargo run
Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Running `target/debug/exercise1`
{3: 4, 8: 2, 5: 4, 7: 3, 2: 2, 1: 1, 9: 1, 4: 3, 6: 5}
max_count = 5
average - 5, middle - 7, max_count key - 6
```

I've see, that max_count is 5 of number 6, but realy number 6 occurs only 4 times. Where is my misstake?