30 lines
864 B
Rust
30 lines
864 B
Rust
// leetcode 72 [edit_distance](https://leetcode.com/problems/edit-distance/)
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fn edit_distance(word1: &str, word2: &str) -> i32 {
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let word1_chars: Vec<char> = word1.chars().collect();
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let word2_chars: Vec<char> = word2.chars().collect();
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let m = word1.len();
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let n = word2.len();
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let mut dp = vec![vec![0; m+1]; n+1];
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// 初始化第一行
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for i in 0..=m { dp[i][0] = i; }
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// 初始化第一列
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for j in 0..=n { dp[0][j] = j; }
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for i in 1..=m {
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for j in 1..=n {
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let mut step = 0;
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if word1_chars[i-1] != word2_chars[j-1] { step = 1; }
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dp[i][j] = (dp[i][j-1] + 1).min(dp[i-1][j] + 1).min(dp[i-1][j-1] + step);
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}
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}
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dp[m][n] as i32
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}
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fn main() {
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let word1 = "mitcmu";
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let word2 = "mtacnu";
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let m = edit_distance(word1, word2);
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println!("{:?}", m);
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}
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