What is the time complexity of Java hashCode method for the String class? -

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is java's hashcode method string class computed in constant time or linear time? algorithm used?

the documentation tells function:

s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]

it's computed once using linear-time pass, , cached it's o(1) retrieve in future.


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