If there is no memory limitation
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You can use a array which is large enough. Use the input number as index and update the corresponding element.
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Yeah!
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问！谁能帮我解这道java题？感谢···· － tonymmm 　2003-10-09 02:05 (415 bytes , 716reads )
Use Hashtable － 豫北闲人 　2003-10-10 11:51 (232 bytes , 335reads )
B+ tree better... － 今夜独自发呆 　2003-10-09 10:44 (0 bytes , 302reads )
If there is no memory limitation － 香陵居士 　2003-10-09 09:41 (111 bytes , 276reads )
Try his － 辰星 　2003-10-09 03:43 (361 bytes , 304reads )
Linear search is expensive － cigar 　2003-10-09 16:37 (0 bytes , 235reads )
But for his question it is ok. － 辰星 　2003-10-09 23:37 (35 bytes , 207reads )