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16.js
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16.js
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function decodeNumbers(symbols) {
let return_number=0;
const numbers = {
".": 1,
",": 5,
":": 10,
";": 50,
"!": 100,
};
const value = {
".":0,
",":1,
":":2,
";":3,
"!":4,
}
for(let char=0;char<symbols.length;char++){
if(!symbols[char] in numbers){
return Number.NaN;
}
else if(char+1==symbols.length){
return_number+=numbers[symbols[char]];
}
else if(symbols[char+1] in numbers && value[symbols[char+1]]-value[symbols[char]]>0){
return_number-=numbers[symbols[char]];
}
else{
return_number+=numbers[symbols[char]];
}
}
console.log(return_number);
return return_number;
}
decodeNumbers('...') // 3
decodeNumbers('.,') // 4 (5 - 1)
decodeNumbers(',.') // 6 (5 + 1)
decodeNumbers(',...') // 8 (5 + 3)
decodeNumbers('.........!') // 107 (1 + 1 + 1 + 1 + 1 + 1 + 1 - 1 + 100)
decodeNumbers('.;') // 49 (50 - 1)
decodeNumbers('..,') // 5 (-1 + 1 + 5)
decodeNumbers('..,!') // 95 (1 - 1 - 5 + 100)
decodeNumbers('.;!') // 49 (-1 -50 + 100)
decodeNumbers('!!!') // 300
decodeNumbers(';!') // 50
decodeNumbers(';.W') // NaN