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Code shared from the Rust Playground
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#![allow(unused)] | |
use std::collections::HashMap; | |
fn main() { | |
let mut vec = vec![3, 5, 6, 3, 4, 7, 4]; | |
println!("Averege ={}", averege(&vec)); | |
assert_eq!(median(&mut vec), 4.0); | |
println!("Median ={}", median(&mut vec)); | |
println!("Mode ={}", mode(&vec)); | |
} | |
fn averege(v: &[i32]) -> f32 { | |
v.iter().sum::<i32>() as f32 / v.len() as f32 | |
} | |
fn median(v: &mut Vec<i32>) -> f32 { | |
v.sort(); | |
let size = v.len(); | |
if size % 2 == 0 { | |
(v[size / 2] + v[size / 2 - 1]) as f32 / 2.0 | |
} else { | |
v[size / 2] as f32 | |
} | |
} | |
fn mode(v: &[i32]) -> i32 { | |
let mut occurrences = HashMap::new(); | |
for &value in v { | |
*occurrences.entry(value).or_insert(0) += 1; | |
} | |
occurrences | |
.into_iter() | |
.max_by_key(|&(_, count)| count) | |
.map(|(val, _)| val) | |
.expect("Can not compute the mode of zero number") | |
} |
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