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Update 0377.组合总和Ⅳ.md 优化 rust

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2023-05-27 23:14:11 +08:00
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problems/0377.组合总和Ⅳ.md
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@ -253,16 +253,17 @@ Rust
```Rust ```Rust
impl Solution { impl Solution {
pub fn combination_sum4(nums: Vec<i32>, target: i32) -> i32 { pub fn combination_sum4(nums: Vec<i32>, target: i32) -> i32 {
let mut dp = vec![0; target as usize + 1]; let target = target as usize;
let mut dp = vec![0; target + 1];
dp[0] = 1; dp[0] = 1;
for i in 1..=target as usize { for i in 1..=target {
for &j in nums.iter() { for &n in &nums {
if i as i32 >= j { if i >= n as usize {
dp[i] += dp[i- j as usize]; dp[i] += dp[i - n as usize];
} }
} }
} }
return dp[target as usize]; dp[target]
} }
} }
``` ```