Description: //Enter a plastic array int [] a, and the need to find int key,// return key after the post-sort subscript (index value), can be improved but not before the subscript// on a number key to speaking, only to return one should be easy to achieve but did not return the key to all of the subscript// If you can not find, then return-1// deficiencies is to sort
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二分查找.java
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