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

function sum(...rest) {
    let result = 0;
    rest.forEach(n => {
        result += n;
    })
    return result;
}

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

function sum(...rest) {

var c=0

rest.map((a,b)=>{

return c+=a

}

)

return c

}

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

抄一波答案