Claude
682b7b067c
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b66uwsWr9B1ouyrzUh
16 lines
533 B
Plaintext
16 lines
533 B
Plaintext
== equals() without hashCode() ==
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a.equals(b) = true
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a.hashCode() == b.hashCode() = false
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HashSet size after adding a then b = 2
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HashSet.contains(new equal key) = false
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HashMap.get(equal key) = null
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== with hashCode() ==
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HashSet size after adding c then d = 1
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HashSet.contains(new equal key) = true
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== a legal but useless hashCode(): return 42 ==
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keys = 2000
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equals() calls for 2000 gets, constant hash = 2002999
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equals() calls for 2000 gets, good hash = 2000
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