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1958.js
49 lines (41 loc) · 1.32 KB
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1958.js
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var input = require('fs').readFileSync('/dev/stdin', 'utf8');
var lines = input.split('\n');
let number = lines.shift();
let result = '';
let reference = 0;
if(number.substring(0,1) === '-') {
if(Number(number) === 0) {
result += '-';
}
reference++;
} else {
result += '+';
}
const y = String(parseFloat(number));
if(y.includes('e')) {
let indexE = y.indexOf('e');
let x = y.slice(0, indexE);
result += `${Number(x).toFixed(4)}${y.slice(indexE).toUpperCase()}`;
} else {
number = y;
let repeat = true;
let counterSignExponent = 0;
while(repeat) {
if(number[reference] === '0' && Number(number) !== 0) {
number = String(Number(number) * 10);
counterSignExponent--;
} else if(number[reference + 1] !== '.' && number[reference + 1] !== undefined) {
number = String(Number(number) * 0.1);
counterSignExponent++;
} else {
repeat = false;
}
}
result += `${Number(number).toFixed(4)}E`;
if(counterSignExponent >= 0) {
result += String(counterSignExponent).length > 1 ? `+${counterSignExponent}` : `+0${counterSignExponent}`;
} else {
result += String(counterSignExponent).length > 2 ? counterSignExponent : `-0${counterSignExponent * (-1)}`;
}
}
console.log(result);