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练习

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'use strict';

function normalize(arr) {


    function f(name){
         var nameArray = [];
         var newName;
         nameArray = name.split('');

         for(var j = 0; j < nameArray.length; j++){
             if (j === 0)
                 nameArray[j] = nameArray[j].toUpperCase();
             else
                 nameArray[j] = nameArray[j].toLowerCase();
         }
         return nameArray.reduce(function (x, y) {return x + y});
    }

    return arr.map(f)

}

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