The example in this article describes how to implement simple permutation and combination in js. Share it with everyone for your reference, the details are as follows:
The screenshot of the running effect is as follows:
The specific code is as follows:
<!DOCTYPE html>
<html>
<head>
<title>demo</title>
<script type="text/javascript">
var str = [1,2,3,4,5];
var count = 0;
function arrange(s){
for(var i=0,length=str.length; i<length; i++) {
if(s.length == length - 1) {
if(s.indexOf(str[i]) < 0) {
count++;
console.log("组合"+count+"="+s + str[i]);
}
continue;
}
if(s.indexOf(str[i]) < 0) {
arrange(s+str[i]);
}
}
}
arrange("");
</script>
</head>
<body>
</body>
</html>
Readers who are interested in more content related to JavaScript algorithms can check out the special topics on this site: "Summary of JavaScript mathematical operation usage", "Summary of JavaScript sorting algorithms", "Summary of JavaScript traversal algorithms and techniques" and "Summary of JavaScript data structures and algorithm techniques"
I hope this article will be helpful to everyone in JavaScript programming.
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