来自北大算法课的Leetcode题解：2185. 统计包含给定前缀的字符串

代码仓库：Github | Leetcode solutions @doubleZ0108 from Peking University.

• 解法1(T70% S86%): 没啥好说的，总归是要把所有字符串看一遍才能统计总数的，直接调用startWith()函数判断有无前缀即可

var prefixCount = function(words, pref) {
    var res = 0;
    for (var i=0; i<words.length; i++) {
        if (words[i].startsWith(pref)) {
            res++;
        }
    }
    return res;
};