15 lines
277 B
Rust
15 lines
277 B
Rust
impl Solution {
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pub fn climb_stairs(n: i32) -> i32 {
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if n < 3 {
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return n;
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}
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let mut ways = vec![0, 1, 2];
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for k in 3..=n {
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ways.remove(0);
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ways.push(ways[0] + ways[1]);
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}
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ways[2]
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}
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}
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