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b6027889f5
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@ -252,6 +252,24 @@ function numTrees(n: number): number {
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};
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```
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### Rust
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```Rust
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impl Solution {
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pub fn num_trees(n: i32) -> i32 {
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let n = n as usize;
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let mut dp = vec![0; n + 1];
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dp[0] = 1;
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for i in 1..=n {
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for j in 1..=i {
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dp[i] += dp[j - 1] * dp[i - j];
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}
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}
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dp[n]
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}
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}
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```
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### C
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```c
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