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@ -14,9 +14,24 @@
* `while left < right`, with `left = mid + 1` and `right = mid`, and `left` is returned
* `while left + 1 < right`, with `left = mid` and `right = mid`, and `left` and `right` are returned
* in python, `bisect.bisect_left()` returns the index at which the `val` should be inserted in the sorted array.
<br>
```python
from bisect import bisect_left
def binary_search(array, val, low=0, high=None):
high = high or len(array)
position = bisect_left(array, val, low, high)
if position != high and array[position] == value:
return position
return -1
```
----
### iterative