Suppose that a client performs an intermixed sequence of (stack) push and pop operations. The push operations push the integers 0 through 9 in order on to the stack; the pop operations print out the return value. Circle the following sequence(s) that could not occur. a. 4 3 2 1 0 9 8 7 6 5 b. 2 1 4 3 6 5 8 7 9 0 c. 0 4 6 5 3 8 1 7 2 9 d. 4 6 8 7 5 3 2 9 0 1

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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Suppose that a client performs an intermixed sequence of (stack) push and pop operations. The push operations push the integers 0 through 9 in order on to the stack; the pop operations print out the return value. Circle the following sequence(s) that could not occur.

a. 4 3 2 1 0 9 8 7 6 5

b. 2 1 4 3 6 5 8 7 9 0

c. 0 4 6 5 3 8 1 7 2 9

d. 4 6 8 7 5 3 2 9 0 1

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