go统计字符串及数组中出现次数

数组:统计出现字数
package main

import "fmt"

func  main()  {
	s := [...]string{"Mlxg", "123","Mlxg", "abc" ,"fff" ,"123", "Mlxg", 
	"fff", "abc", "123", "abc", "fff"}
	m := make(map[string]int, 20)         //定义map
        //遍历数组存储到map
	for _,v := range s{           //遍历数组s,map比较
		if _,ok := m[v]; ok {        //判断是否第一次出现
			m[v] ++              //否,m[v]值加1
		}else {
			m[v] = 1             //第一次出现存储到map,m[v]=1
		}
	}
	for i,v := range m{                  //遍历map
		fmt.Println(i,v)
	}
	fmt.Println(m,len(m))
	fmt.Println(s,len(s),cap(s))
}
package main

import (
	"fmt"
    "strings"
)

func main() {  
	s :=  "Tom abc Lucy Lily Lucy Lucy Cat Dog Pig Lucy Tom"
	s1 := strings.Split(s, " ")             //将字符串按空格切割,得到切片
	m1 := make(map[string]int, 20)          //遍历切片存储到map
	for _,k := range s1{                    //遍历切片,map比较
		if _,ok := m1[k]; ok {
			m1[k] ++
		} else {
			m1[k] = 1
		}
	}
	for i,v := range m1{
		fmt.Println(i,v)
	}
}

  

  

原文地址:https://www.cnblogs.com/The-day-of-the-wind/p/13994624.html