题目来源：微步
# 答案：重拾
一.map引用类型
1.1使用make定义map
var m1 map[string]string
m1 = make(map[string]string,10)
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1.2直接赋值的方式定义map
var m4 = map[string]string{"a":"aaa"}
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2.map的嵌套结构
//方式1
students := make(map[int]map[string]string,10)
students[1] = map[string]string{
"姓名":"张三",
}
student[2] = map[string]string{
"姓名":"json",
}
//方式二
type s map[int]map[string]string
ss := s{
1:{
"姓名":"张三",
},
2:{
"姓名":"json",
},
}
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3.map切片:make([]map[int]int,2,4)
a:=make([]map[int]int,2,4)
a[0] = make(map[int]int)
a[0][1] =1
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4.map遍历和排序
map1 := map[int]string{
l1:"测试1",
l2:"测试2",
}
for key,item := range map1{
fmt.Println(key,item)
}
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