Write a Python function: def second (A) which takes as input an array A of integers and returns the second smallest element of A. If A has less than two elements, the function should return None. The array A should not be changed. You can assume all elements of A are different. , your solution should be efficient and run in linear time. For example, second([1,-5,3,4]) should return 1. On the other hand, second([1]) should return None.
Write a Python function: def second (A) which takes as input an array A of integers and returns the second smallest element of A. If A has less than two elements, the function should return None. The array A should not be changed. You can assume all elements of A are different. , your solution should be efficient and run in linear time. For example, second([1,-5,3,4]) should return 1. On the other hand, second([1]) should return None.
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
Related questions
Question
![(e) Using recursion, write a Python function:
def exist (A,i,f)
which takes as input an array A of integers, a positive integer i, and a function f that takes
as input an integer and returns a boolean. The function exist returns True if there are at
least i elements x in A such that f (x) returns True. If A is empty, exist(A,i,f) should
return False.
For example, if isOdd is a function that returns True on odd integer inputs and False
otherwise, then exist([1,2,3] ,1,odd) and exist([1,2,3],2,odd) should return
True (1 and 3 are odd), while exist([1,2,3],3,odd) should return False.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff756170d-2d1d-4a13-8a12-5e3152a86d82%2F82bd6072-42c1-49cb-a0b7-be2404219e4e%2Fc9wire_processed.png&w=3840&q=75)
Transcribed Image Text:(e) Using recursion, write a Python function:
def exist (A,i,f)
which takes as input an array A of integers, a positive integer i, and a function f that takes
as input an integer and returns a boolean. The function exist returns True if there are at
least i elements x in A such that f (x) returns True. If A is empty, exist(A,i,f) should
return False.
For example, if isOdd is a function that returns True on odd integer inputs and False
otherwise, then exist([1,2,3] ,1,odd) and exist([1,2,3],2,odd) should return
True (1 and 3 are odd), while exist([1,2,3],3,odd) should return False.
![Write a Python function:
def second (A)
which takes as input an array A of integers and returns the second smallest element of A.
If A has less than two elements, the function should return None. The array A should not
be changed. You can assume all elements of A are different.
, your solution should be efficient and run in linear time.
For example, second ([1,-5,3,4]) should return 1. On the other hand, second([1])
should return None.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff756170d-2d1d-4a13-8a12-5e3152a86d82%2F82bd6072-42c1-49cb-a0b7-be2404219e4e%2F515bshj_processed.png&w=3840&q=75)
Transcribed Image Text:Write a Python function:
def second (A)
which takes as input an array A of integers and returns the second smallest element of A.
If A has less than two elements, the function should return None. The array A should not
be changed. You can assume all elements of A are different.
, your solution should be efficient and run in linear time.
For example, second ([1,-5,3,4]) should return 1. On the other hand, second([1])
should return None.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 4 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Database System Concepts](https://www.bartleby.com/isbn_cover_images/9780078022159/9780078022159_smallCoverImage.jpg)
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
![Starting Out with Python (4th Edition)](https://www.bartleby.com/isbn_cover_images/9780134444321/9780134444321_smallCoverImage.gif)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
![Digital Fundamentals (11th Edition)](https://www.bartleby.com/isbn_cover_images/9780132737968/9780132737968_smallCoverImage.gif)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
![Database System Concepts](https://www.bartleby.com/isbn_cover_images/9780078022159/9780078022159_smallCoverImage.jpg)
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
![Starting Out with Python (4th Edition)](https://www.bartleby.com/isbn_cover_images/9780134444321/9780134444321_smallCoverImage.gif)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
![Digital Fundamentals (11th Edition)](https://www.bartleby.com/isbn_cover_images/9780132737968/9780132737968_smallCoverImage.gif)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
![C How to Program (8th Edition)](https://www.bartleby.com/isbn_cover_images/9780133976892/9780133976892_smallCoverImage.gif)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
![Database Systems: Design, Implementation, & Manag…](https://www.bartleby.com/isbn_cover_images/9781337627900/9781337627900_smallCoverImage.gif)
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
![Programmable Logic Controllers](https://www.bartleby.com/isbn_cover_images/9780073373843/9780073373843_smallCoverImage.gif)
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education