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floating point numbers handled

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AtharvaThorve
2020-07-18 10:24:48 +05:30
parent 14cb45dda1
commit 34e60a73c8
1 changed files with 6 additions and 3 deletions
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snippets/reverseNumber.md
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@ -7,16 +7,19 @@ Reverses a number.
Use `Object.prototype.toString()` to convert number to a string. Use `Object.prototype.toString()` to convert number to a string.
Use the split function `String.prototype.split()` to convert string to array and `Array.prototype.reverse()` to reverse the order of the characters in the string. Use the split function `String.prototype.split()` to convert string to array and `Array.prototype.reverse()` to reverse the order of the characters in the string.
Combine characters to get a string using `String.prototype.join('')`. Combine characters to get a string using `String.prototype.join('')`.
Use the `parseInt()` to convert string to a number and use `Math.sign()` to preserve the signum value of the number. Use the `parseFloat()` to convert string to a number and use `Math.sign()` to preserve the signum value of the number.
_Note_: Here `parseFloat()` is used instead of `parseInt()` so floating point numbers are properly handled.
```js ```js
const reverseNumber = n => { const reverseNumber = n => {
const reveresedNumber = n.toString().split('').reverse(); const reveresedNumber = n.toString().split('').reverse().join('');
return parseInt(reveresedNumber) * Math.sign(n); return parseFloat(reveresedNumber) * Math.sign(n);
} }
``` ```
```js ```js
reverseNumber(981); // 189 reverseNumber(981); // 189
reverseNumber(-500); // -5 reverseNumber(-500); // -5
reverseNumber(73.6); // 6.37
reverseNumber(-5.23); // -32.5
``` ```