JavaScript - Arrays(Objects, functions)

Data Structures and Algorithms With Javascript
(O'Reilly Media)
Michael McMillan(著)

開発環境

• OS X Yosemite - Apple (OS)
• Emacs (Text Editor)
• JavaScript (プログラミング言語)
• SpiderMonkey (JavaScript engine)

Data Structures and Algorithms With Javascript (Michael McMillan(著)、O'Reilly Media)のChapter 2(Arrays)、Exercises 1.(No. 1820)を解いてみる。

Exercises 1.(No. 1820)

JavaScript(Emacs)

var i,
    grades = {
        grades: [],
        add: function (grade) {
            this.grades.push(grade);
        },
        average: function () {
            var s = 0,
                len = this.grades.length,
                i;
            
            for (i = 0; i < len; i += 1) {
                s += this.grades[i];
            }

            return s / len;
        }
    };

for (i = 10; i <= 100; i += 10) {
    grades.add(i);
}

print(grades.grades);
print(grades.average());

出力結果(Terminal, shell, SpiderMonkey)

$ js sample1.js
10,20,30,40,50,60,70,80,90,100
55
$