From Wikipedia, the free encyclopedia
一個雜湊函數(英文:hash function)係一個能夠將任何大細嘅數據對應落去大細固定嘅數值嘅函數。
例如攞一大拃人嘅英文名(可以有幾多個字母都得),再將啲名冚唪唥轉換做兩個位嘅數-John Smith
→ 02
、Lisa Smith
→ 03
、Sam Doe
→ 02
... 呀噉[1]。
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