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longest-common-prefix.go
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longest-common-prefix.go
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package main
import (
"fmt"
)
func longestCommonPrefix(strs []string) string {
if len(strs) == 0 {
return ""
}
if len(strs) == 1 {
return strs[0]
}
var lastPrefix string = ""
for v := 0; ; v++ {
for h := 0; h <= len(strs)-2; h++ {
if len(strs[h]) < v || len(strs[h+1]) < v || strs[h][:v] != strs[h+1][:v] {
return lastPrefix
}
}
lastPrefix = strs[0][:v]
}
return lastPrefix
}
func main() {
test := []string{"asd", "bsd"}
fmt.Println("Testing:", test)
result := longestCommonPrefix(test)
fmt.Println("Yields :", result, "\n")
test = []string{"a", "b"}
fmt.Println("Testing:", test)
result = longestCommonPrefix(test)
fmt.Println("Yields :", result, "\n")
test = []string{"xc", "xc", "", "xc"}
fmt.Println("Testing:", test)
result = longestCommonPrefix(test)
fmt.Println("Yields :", result, "\n")
test = []string{"abcd", "abc"}
fmt.Println("Testing:", test)
result = longestCommonPrefix(test)
fmt.Println("Yields :", result, "\n")
test = []string{"abc", "abcd"}
fmt.Println("Testing:", test)
result = longestCommonPrefix(test)
fmt.Println("Yields :", result, "\n")
test = []string{"abcd", "abcde", "abcd"}
fmt.Println("Testing:", test)
result = longestCommonPrefix(test)
fmt.Println("Yields :", result, "\n")
}