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交作业

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我叫老呼

#1 Created at ... [Delete] [Delete and Lock User] 
function product(arr) {
    return arr.reduce(function (x, y) {
           return x*y;
    });
}

function string2int(s) {

    return s.split('').map(function (x) {return x-'0';})
                  .reduce(function (x, y) {return x*10 + y;});

}

function normalize(arr) {

    return arr.map(function (x) {
        return x.charAt(0).toUpperCase() + x.toLowerCase().slice(1);
    });

}

有笙友瑟

#2 Created at ... [Delete] [Delete and Lock User]

同学你这个能执行成功? 我执行报错: SyntaxError: Unexpected token if

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