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Binary search for elements in an array

高洛峰
Release： 2016-12-19 16:27:36
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1491 people have browsed it

The binary method searches for the target element in the array a with the length of len in ascending order.
If the search is successful, the subscript is returned.
Otherwise, it returns -1. PHP Chinese website!

Related labels：
二分法查找
source：php.cn
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