Golang program for implementation of Levenshtein distance
Levenshtein distance (LD) is a measure of the similarity between two strings, which we will refer to as the source string (s) and the target string (t). The distance is the number of deletions, insertions, or substitutions required to transform s into t. For example, the Levenshtein distance between "Asheville" and "Arizona" is 8.
Here is source code of the Go Program to Implement Levenshtein Distance Computing Algorithm.
Example
package main
import "fmt"
func levenshtein(str1, str2 []rune) int {
s1len := len(str1)
s2len := len(str2)
column := make([]int, len(str1)+1)
for y := 1; y <= s1len; y++ {
column[y] = y
}
for x := 1; x <= s2len; x++ {
column[0] = x
lastkey := x - 1
for y := 1; y <= s1len; y++ {
oldkey := column[y]
var incr int
if str1[y-1] != str2[x-1] {
incr = 1
}
column[y] = minimum(column[y]+1, column[y-1]+1, lastkey+incr)
lastkey = oldkey
}
}
return column[s1len]
}
func minimum(a, b, c int) int {
if a < b {
if a < c {
return a
}
} else {
if b < c {
return b
}
}
return c
}
func main(){
var str1 = []rune("Asheville")
var str2 = []rune("Arizona")
fmt.Println("Distance between Asheville and Arizona:",levenshtein(str1,str2))
str1 = []rune("Python")
str2 = []rune("Peithen")
fmt.Println("Distance between Python and Peithen:",levenshtein(str1,str2))
str1 = []rune("Orange")
str2 = []rune("Apple")
fmt.Println("Distance between Orange and Apple:",levenshtein(str1,str2))
}
Output
Distance between Asheville and Arizona: 8
Distance between Python and Peithen: 3
Distance between Orange and Apple: 5
Most Helpful This Week
How to convert Boolean Type to String in Go?
How to check specific field exist in struct?
Cannot use <variable> as <type> value in return statement error in Golang
Golang read file line by line to string
How do you handle HTTP client server logging in Go?
Go program to find MX records record of a domain