39 lines
1012 B
Rust
39 lines
1012 B
Rust
use std::io;
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pub struct Status{
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pos: i32,
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a: char, // from
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b: char, // to
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c: char // aux
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}
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fn main(){
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let mut s = String::new();
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io::stdin().read_line(&mut s).unwrap();
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let n: i32 = s.trim().parse().unwrap();
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let mut stack: Vec<Status> = Vec::new();
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stack.push(Status{pos: n, a: 'A', b: 'C', c: 'B'});
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let mut max = 0;
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let mut output = String::new(); //输出，要不然太慢总会超时
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while !stack.is_empty() {
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if stack.len() > max {
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max = stack.len();
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}
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let mut end = stack.pop().unwrap();
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if end.pos == 1 {
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output.push_str(&format!("Move disk from {} to {}\n", end.a, end.b));
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} else {
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stack.push(Status{pos: end.pos - 1, a: end.c, b: end.b, c: end.a});
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stack.push(Status{pos: 1, a: end.a, b: end.b, c: end.c});
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stack.push(Status{pos: end.pos - 1, a: end.a, b: end.c, c: end.b});
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}
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}
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print!("{}", output);
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println!("{}", max);
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} |