// 求积 return arr.reduce(function (x,y){return x * y;});
// string2int 函数 return arr.split('').map(function (x){ return +x;}).reduce(function (x,y){return x * 10 + y;});
//英文名字格式化 return arr.map(function (name) {return name.charAt(0).toUpperCase() + name.slice(1).toLowerCase();});
//小明的代码怎么了? r = arr.map(function(x){return parseInt(x)}); //
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// 求积 return arr.reduce(function (x,y){return x * y;});
// string2int 函数 return arr.split('').map(function (x){ return +x;}).reduce(function (x,y){return x * 10 + y;});
//英文名字格式化 return arr.map(function (name) {return name.charAt(0).toUpperCase() + name.slice(1).toLowerCase();});
//小明的代码怎么了? r = arr.map(function(x){return parseInt(x)}); //