A function f defined on stack of integer satisfies the following properties f(empty) = 0 and f (push (S, i)) = max (f(s), 0) + i for all stacks S and integer i. After pushing integers 2, -3, 2, -1, 2 in order from bottom to top. f(s) returns the top of the stack. What is f(s)?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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A function f defined on stack of integer
satisfies the following properties f(empty) =
0 and f (push (S, i)) = max (f(s), 0) + i for all
stacks S and integer i.
After pushing integers 2, -3, 2, -1, 2 in order
from bottom to top. f(s) returns the top of
the stack. What is f(s)?
Transcribed Image Text:A function f defined on stack of integer satisfies the following properties f(empty) = 0 and f (push (S, i)) = max (f(s), 0) + i for all stacks S and integer i. After pushing integers 2, -3, 2, -1, 2 in order from bottom to top. f(s) returns the top of the stack. What is f(s)?
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