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Travis build: 902

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2018-01-03 11:47:41 +00:00
parent d73740ba54
commit b2be168e86
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README.md
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@ -868,14 +868,15 @@ initialize2DArray(2, 2, 0); // [[0,0], [0,0]]
### initializeArrayWithRange
Initializes an array containing the numbers in the specified range where `start` and `end` are inclusive.
Initializes an array containing the numbers in the specified range where `start` and `end` are inclusive with there common difference `step`.
Use `Array((end + 1) - start)` to create an array of the desired length, `Array.map()` to fill with the desired values in a range.
Use `Array(Math.ceil((end+1-start)/step)` to create an array of the desired length(the amounts of elements is equal to `(end-start)/step` or `(end+1-start)/step` for inclusive end), `Array.map()` to fill with the desired values in a range.
You can omit `start` to use a default value of `0`.
You can omit `step` to use a default value of `1`.
```js
const initializeArrayWithRange = (end, start = 0) =>
Array.from({ length: end + 1 - start }).map((v, i) => i + start);
const initializeArrayWithRange = (end, start = 0, step = 1) =>
Array.from({ length: Math.ceil((end + 1 - start) / step) }).map((v, i) => i * step + start);
```
<details>
@ -884,6 +885,7 @@ const initializeArrayWithRange = (end, start = 0) =>
```js
initializeArrayWithRange(5); // [0,1,2,3,4,5]
initializeArrayWithRange(7, 3); // [3,4,5,6,7]
initializeArrayWithRange(9, 0, 2); //[0,2,4,6,8]
```
</details>