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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

Section: Chapter Questions

Problem 1PE

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# cannot contain syntax error

def replace(keyv:int,newv:int,S:set)->set:
"Find a number keyv from a given set S" # note S is a set
"As soon as found, replace the number keyv with a number newv"
"return the resultant set with the other numbers unchanged"
"Input keyv to be found, if found replace with newv else no change to the set"
"S contains a set of int, output the resultant set"

if __name__ == "__main__":
# testing cod goes inside this if

Expert Solution

Step 1 Code

def replace(keyv:int, newv:int, S:set) -> set:
    newSet = set()
    for i in S:
        if i == keyv:
            newSet.add(newv)
        else:
            newSet.add(i)
    return newSet


if __name__ == "__main__":
    S = {"apples", "oranges", 8, "mercury", "neville"}
    print(S)
    keyv = input("Please enter the key to be searched for : ")
    newv = input("Please enter the new value to replace key with : ")
    newSet = replace(keyv, newv, S)
    print(newSet)

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