edit_distance

  • 2022-12-14
  • 浏览 (496)

edit_distance.go 源码

package main

//编辑距离

func minDistance(word1 string, word2 string) int {
	m, n := len(word1), len(word2)
	dp := make([][]int, m+1)
	for i := range dp {
		dp[i] = make([]int, n+1)
	}
	for i := 0; i <= m; i++ {
		dp[i][0] = i
	}
	for i := 0; i <= n; i++ {
		dp[0][i] = i
	}
	for i := 1; i <= m; i++ {
		for j := 1; j <= n; j++ {
			if word1[i-1] == word2[j-1] {
				dp[i][j] = dp[i-1][j-1]
			} else {
				dp[i][j] = min(min(dp[i-1][j], dp[i][j-1]), dp[i-1][j-1]) + 1
			}
		}
	}
	return dp[m][n]
}

func min(x, y int) int {
	if x < y {
		return x
	}
	return y
}

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