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added impl for radix sort need to debug

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specCon18 2024-05-25 19:48:22 -04:00
parent 3afd44df2e
commit 37c7f922ce
1 changed files with 40 additions and 40 deletions
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80
src/radix_sort.rs
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@ -1,46 +1,46 @@
use crate::data_structures::stack::Stack;
pub fn radix_sort(arr: &[u64]) -> Vec<u64> {
let mut buckets: [Stack<u64>; 10] = [
Stack::new(),
Stack::new(),
Stack::new(),
Stack::new(),
Stack::new(),
Stack::new(),
Stack::new(),
Stack::new(),
Stack::new(),
Stack::new(),
];
let mut sort_vec = arr.to_vec();
let largest_place_value = get_largest_place(arr);
// use crate::data_structures::stack::Stack;
// pub fn radix_sort(arr: &[u64]) -> Vec<u64> {
// let mut buckets: [Stack<u64>; 10] = [
// Stack::new(),
// Stack::new(),
// Stack::new(),
// Stack::new(),
// Stack::new(),
// Stack::new(),
// Stack::new(),
// Stack::new(),
// Stack::new(),
// Stack::new(),
// ];
// let mut sort_vec = arr.to_vec();
// let largest_place_value = get_largest_place(arr);
for counter in 0..largest_place_value {
for num in &sort_vec {
let digit = get_digit(*num, counter as usize);
buckets[digit].push(*num);
}
// for counter in 0..largest_place_value {
// for num in &sort_vec {
// let digit = get_digit(*num, counter as usize);
// buckets[digit].push(*num);
// }
let mut index = 0;
for stack in &mut buckets {
while let Some(value) = stack.pop() {
sort_vec[index] = value;
index += 1;
}
}
}
// let mut index = 0;
// for stack in &mut buckets {
// while let Some(value) = stack.pop() {
// sort_vec[index] = value;
// index += 1;
// }
// }
// }
sort_vec
}
// sort_vec
// }
fn get_digit(num: u64, place: usize) -> usize {
(num / 10u64.pow(place as u32)) as usize % 10
}
// fn get_digit(num: u64, place: usize) -> usize {
// (num / 10u64.pow(place as u32)) as usize % 10
// }
fn get_largest_place(arr: &[u64]) -> usize {
arr.iter()
.map(|&num| (num as f64).log(10.0).ceil() as usize)
.max()
.unwrap_or(0)
}
// fn get_largest_place(arr: &[u64]) -> usize {
// arr.iter()
// .map(|&num| (num as f64).log(10.0).ceil() as usize)
// .max()
// .unwrap_or(0)
// }