我想知道为什么我的输出看起来像这样：
This : 1
a : 4
is : 2
just : 3
test : 5
当我的代码看起来像这样：
map<string, int> wordCount;
wordCount["This"] = 1;
wordCount["is"] = 2;
wordCount["just"] = 3;
wordCount["a"] = 4;
wordCount["test"] = 5;
for (map<string, int>::iterator it = wordCount.begin();
it != wordCount.end(); it++) {
cout << it->first << " : " << it->second << endl;
}
我的问题是，地图是否以随机顺序存储对象？
答案 0 :(得分：5)
地图按排序顺序存储内容。 body{
height: 100%;
width: 100%;
}
.row {
width: 100%;
margin: 0px auto;
max-width: 100%;
height: 100%;
}
.column, .columns {
position: relative;
padding-left: 0em;
padding-right: 0em;
float: left;
height: 100%;
width: 100%;
}
#wrapper {
width: 100%;
height: 100%;
right: 0%;
top:0%;
position: relative;
}
#parent {
width: 100%;
height: 100%;
background: #00f;
position: relative;
border-radius: 0px;
border: solid 0px white;
right: 0px;
}
#div1 {
width: 3224px;
height: 2007px;
left: 0;
overflow: hidden;
position: absolute;
top: 0;
background-image: url("https://xphub-resources.s3.amazonaws.com/customer/7dd00ec1-187f-42c2-859c-918d671a2895/img/NH_cidade.jpg");
background-size: cover;
background-position: 0 0;
background-repeat: no-repeat;
right: 0%;
}
.wrapper-general {
height: 100%;
left: 0;
overflow: hidden;
position: absolute;
top: 0;
width: 100%;
}
#right {
position: absolute;
right: 0px;
top: 50%;
z-index: 99999;
margin: 0px;
width: 90px;
height: 50px;
}
#left {
position: absolute;
left: 0px;
top: 50%;
z-index: 99999;
margin: 0px;
width: 90px;
height: 50px;
}
#top {
position: absolute;
left: 50%;
top: 0%;
z-index: 99999;
margin: 0px;
width: 90px;
height: 50px;
}
#bottom {
position: absolute;
left: 50%;
bottom: 0%;
z-index: 99999;
margin: 0px;
width: 90px;
height: 50px;
}
之前"This"的原因是"a"在'T'之前出现在大多数（如果不是所有字符集）中'a'因此'T' < 'a'来自"This"之前，因为不考虑字符串的长度。
如果您将"a"更改为This，那么您将获得
this