codility之Distinct

Distinct

题目链接:

Distinct

题目解析

比较简单, 就是求数组A中的不重复的数字。

如何解决?

直接来一次遍历就可以搞定了。

talk is cheap, show me the code~

代码:

function solution($A) {
    // write your code in PHP5.5
    $statis = array();
    foreach ($A as $k => $v) {
        if (!isset($statis[$v])) {
            $statis[$v] = 1;
        }
    }
    return count($statis);
}

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