练习题 (一)

题目:

Given an absolute path for a file (Unix-style), simplify it.

For example,
path = "/home/", => "/home"
path = "/a/./b/../../c/", => "/c"

我的解答:

/**
 * @param {string} path
 * @return {string}
 */
var simplifyPath = function(path) {
    var smiplify = "";
    var array = path.split('/');

    var deque = [];
    for (var i = 0; i <  array.length;  i++) {
        str = array[i];
        if(str === '' || str === '.') {
            continue;
        }
        else if (str === "..") {
            deque.pop();
        } else {
            deque.push(str);
        }
    }

    smiplify = "/";


    var strDeque = deque.join('/');
    console.log("log:" + strDeque);

    if (strDeque[0] === '/') {
        smiplify = strDeque;
    }
    else {
        smiplify = '/' + strDeque;
    }

    console.log("log:" + smiplify);
    return smiplify;
};

答题心得： 注意最简单的字符串题目，注意split的用法。