17 lines
448 B
Markdown
17 lines
448 B
Markdown
### sortedIndex
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Returns the lowest index at which value should be inserted into array in order to maintain its sort order.
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```js
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const sortedIndex = (arr,n) => {
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let [anarray, isReversed] = arr[0] > arr[1] ? [arr.reverse(), true] : [arr, false];
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let val = anarray.findIndex(el => n <= el);
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return val === -1 ? arr.length : isReversed ? arr.length - val : val
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}
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```
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```js
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sortedIndex([5,3,2,1], 4); // 1
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sortedIndex([30,50],40); // 1
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```
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