Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
472 views
in Technique[技术] by (71.8m points)

Js算法问题:判断一组数字中有几组相同的数字并计算相同数字个数?

比如1,2,2,5,9这组数字,有一组相同的数字为2,相同个数为2。1,1,3,3,3有两组相同数字,一组相同数字为1,相同个数为2,一组相同数字为3,相同个数为3。
现在要求写一个函数,随便输入一组数字就得出这样的结果,该怎么写?


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
var count={};
for (var i = 0; i < array.length; i++) {
    if (count[array[i]]) {
        count[array[i]]++;
    }else {
        count[array[i]]=1;
    }
}
for (var key in count) {
    if (count.hasOwnProperty(key)) {
        console.log(key+':'+count[key]+'times');
    }
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...