leetcode by golang
[TOC]
package main
import (
"fmt"
"regexp"
)
func replaceSpace(s string) string {
reg := regexp.MustCompile(`\s`)
return reg.ReplaceAllString(s, "%20")
}
func main() {
s := "We are happy."
r := replaceSpace(s)
fmt.Println(r)
}
package main
import "fmt"
func reverseLeftWords(s string, n int) string {
return s[n:] + s[:n]
}
func main() {
s := "abcdefg"
k := 2
r := reverseLeftWords(s, k)
fmt.Println(r)
}
#参考的网上的题解
func isNumber(s string) bool {
s = strings.ToLower(strings.TrimSpace(s))
if strings.ContainsAny(s, " bopx") {
return false
}
if i := strings.IndexAny(s, "e"); i >= 0 {
n1, _ := fmt.Sscan(s[:i], new(big.Float), new(string))
n2, _ := fmt.Sscanf(s[i+1:], "%d%s", new(big.Int), new(string)) // %d 强制以十进制方式读入
return n1 == 1 && n2 == 1
}
n, _ := fmt.Sscan(s, new(big.Float), new(string))
return n == 1
}
func reversePrint(head *ListNode) []int {
if head == nil {
return nil
}
return append(reversePrint(head.Next), head.Val)
}
func reverseWords(s string) string {
s = strings.Trim(s, " ")
words := strings.Fields(s)
i, j := 0, len(words) - 1
for i < j {
words[i], words[j] = words[j], words[i]
i++
j--
}
return strings.Join(words, " ")
}