함수 ranks()

1 개요

함수 rank()

2 JavaScript

JavaScript rank() 문서를 참고하십시오.

var arr = [79, 5, 18, 18, 32];
var sorted = arr.slice().sort(function(a,b){return b-a});
var ranks = arr.slice().map(function(v){ return sorted.indexOf(v)+1 });
console.log( ranks );
// [1, 5, 3, 3, 2]

3 PHP

PHP ranks() 문서를 참고하십시오.

function ranks($arr) {
	$sorted = $arr;
	rsort($sorted);
	return array_map(function($v) use ($sorted) { return array_search($v,$sorted)+1; },$arr);
}
print_r( ranks([79, 5, 18, 18, 32]) );
# Array
# (
#     [0] => 1
#     [1] => 5
#     [2] => 3
#     [3] => 3
#     [4] => 2
# )