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It is correct. Try it. Subtraction of Counters isn't commutative, just like most other uses of subtraction:
4-3 != 3-4.
set("hello")-set("world") != set("world")-set("hello")
etc...
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Hash Tables: Ransom Note
You are viewing a single comment's thread. Return to all comments →
It is correct. Try it. Subtraction of Counters isn't commutative, just like most other uses of subtraction:
4-3 != 3-4.
set("hello")-set("world") != set("world")-set("hello")
etc...