edit_distance
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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