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Index › Programming Questions & Help › Syntax Questions › looking for position in array

oompa_l Full Member Offline Posts: 212	looking for position in array Mar 21st, 2009, 10:14pm   hi when objects are stored in array each position is given an index number. Is there a way to pass an object that sits in an array and get its index in return? thanks

PhiLho  YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: looking for position in array Reply #1 - Mar 22nd, 2009, 12:30am   Yes, just walk the array and stop if/when you find it... If time is critical, you can put the objects in an HashMap, with the objects as key and the indexes as value, although I am not sure it is then still interesting to maintain the array... Or... come to think of it, just use Arrays.binarySearch!