영상
개념
<!DOCTYPE html>
<html lang="ko">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>배열 숫자 정렬 - sort() 구현하기</title>
</head>
<body>
<script>
/*
[개념] sort() 구현하기
*/
let arr = [6, 7, 2, 1, 9, 77];
// [오름차순 정렬]
/*
function check(a, b){
return a - b;
}
*/
// [내림차순 정렬]
function check(a, b){
return b - a;
}
function mySort(arr) {
for(let i=0; i<arr.length; i++) {
for(let j=i; j<arr.length; j++) {
if(check(arr[i], arr[j]) > 0) {
let temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
}
}
}
mySort(arr);
document.write(arr + "<br>"); // 77,9,7,6,2,1
</script>
</body>
</html>
Java
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