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练习

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#1 Created at ... [Delete] [Delete and Lock User]
function string2int(s){
    var nMap = new Map([['1',1],['2',2],['3',3],['4',4],['5',5],['6',6],['7',7],['8',8],['9',9],['0',0]]); 

    return s.split('')
    .map(function(x){
        return nMap.get(x);
     })
    .reduce(function(x,y){
     return x*10 +y});
}
function normalize(arr){
 return arr.map(function(x){
       return x.substring(0,1).toUpperCase() + x.substring(1).toLowerCase();
    })
}

`

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