how to find the second largest number in python

Python program to find the second largest number in a list Your IP: The algorithm is simple, we take a number and compare it with all other numbers present in the list and get the largest, smallest, second largest, and second smallest element. if largest: Enter element of list 5 Sorting the list and then print the second last number. acknowledge that you have read and understood our. Click to reveal @Tomerikoo - But as an exercise, shouldn't we apply the basic tool sets that are available? For sorting the list we will use the predefined sort() function in Python. Method 1: Sorting is an easier but less optimal method. data = [1,2,8,3,12] In this approach, we will first find the maximum element in the list using built-in max() function. Why do people say a dog is 'harmless' but not 'harmful'? Enter element of list 3 a = L[0] After this, we used the sort method so that all the elements of our list are arranged in ascending order. (Only with Real numbers). By using this website, you agree with our Cookies Policy. Now we make use of max() to get the maximum value from the list and then remove it. How can my weapons kill enemy soldiers but leave civilians/noncombatants unharmed? WebFind Second Largest Number in List of Given Size. Enter element of list 12 Enter element of list 9 I will be the last to argue with that. 2023 Studytonight Technologies Pvt. Now we make use of negative indexing since the second-largest number will come at the second last position. Connect and share knowledge within a single location that is structured and easy to search. 139.162.138.182 How to find second largest number in python - 8 BIT AVENUE The action you just performed triggered the security solution. There are various ways to find the second largest number from a list. And then again using max() method, prints the second largest element like shown in the program given below: Like/follow us on social media for updates! Python Program to Find Second Largest Number in List The first step is to create a function that checks the largest number from the list by traversing it. Contribute your expertise and make a difference in the GeeksforGeeks portal. WebWrite a Python Program to find the Second Largest Number in a List using sort, reverse function, and for loop with a practical example. In this article, we have learned about how we can find the second largest element in a list. Your email address will not be published. if not largest or a > largest: this is why I am not going to give you the 6 or 8 line of code I am going to leave it to you to challenge your python skills and improve it and it might just be a little to complex idk if this what you are really going for but that what made sense for me by reading you code. Enter element of list 1 Your email address will not be published. arr = array.copy() Enter element of list 9 How is Windows XP still vulnerable behind a NAT + firewall? Please mail your requirement at [emailprotected]. After getting the largest number we will delete it from the list using list.remove() which will remove the element from the list. Python | Largest, Smallest, Second Largest, Second Smallest in Finding largest and second largest numbers in a loop, Semantic search without the napalm grandma exploit (Ep. Second Largest Number in Python - Javatpoint We make use of First and third party cookies to improve our user experience. Your email address will not be published. You can post a fix to the existing code as another example of what to do. Let's define a function that will take a list of integers, find the two largest numbers and return them as a tupil. How can I create a script that examines a list of numbers to determine the second largest number? Method 3 : By removing the max element from list, Method 3 : Find max list element on inputs provided by user, Your email address will not be published. Enter element of list 45 Heres the implementation of finding the second largest number in a list using numpy.argsort() function. Then again call the max() function to get the current maximum number in the list. If you need to find the second largest number in a list, click on the following subheading: Find the second largest number in a List in Python; We used the set() Performance & security by Cloudflare. Copyright Tutorials Point (India) Private Limited. When we have a lot of elements in our list, the thought of finding the highest or lowest element can come to our mind and Python has made it much easier for us. We have discussed three approaches- using sorted list elements to print the second last element, by removing the maximum element from the list and then finding the largest in the list and lastly, we have used the Brute-force approach to get the second largest element in the list. At best you could be half right. After this, we use the sort method so that all the elements of our list are arranged in ascending order. Here is a way to do it using sort. However, it gives you the possibility to reuse the list since you are temporarily storing the list arr in sor Finally, we pass our list in the function. Python Program to find Second Largest Number in a List In this approach, we will follow the Brute-force approach. # if list contains duplicate max elements removing them until We for i in x: You will be notified via email once the article is available for improvement. Approach#1: The approach is simple. Remove the smallest and largest elements from the list. 6. largest = None Step 1- Define a function to find the second largest number in the list, Step 2- Declare variables and store the maximum nd minimum between the first and the second element in the list, Step 3- Find length of list using len() and store in n, Step 5- Check if list element is greater than maximum, if true update second maximum to maximum and set list element as maximum, Step 6- Else, if list element is greater than second maximum number then update list element as second maximum, Step 8- Declare a list and take input or initialise values, Step 10- Print the value returned by the function, Enter size of list 7 You are getting ages twice per loop and only considering one of the two options for each. Python program to find second largest number in a list Algorithm: Create a numpy array from the given list. Here is its answer: Now supply the input say 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 as ten numbers, then press ENTER key to Asking for help, clarification, or responding to other answers. This website is using a security service to protect itself from online attacks. second largest in [8, 3, 1, 9, 5] is L=[ 4, 61, 72, 2, 5, 85, 3,1] Python program to find second largest number in a list for i in range(1, len(L)): print("2nd largest=", b), Your email address will not be published. Are you looking for the optimal way to achieve your result or do you have a specific set of requirements? In the next for loop, we traverse the list again for finding the highest number but this time excludes the previous one since here our objective is to find the second largest function. Here are the list of programs covered in this article: The question is, write a Python program that find second largest element in a list using for loop. Do you ever put stress on the auxiliary verb in AUX + NOT? How do I write a program to find the second largest number in Given an array of numbers, write python code to find second largest number in array, Code to find second largest number in list. Use min() and max() functions again to find the second smallest and second largest elements. #making new set to maintain uniqueness Instead, let python do the work for you. How can I know what's the largest number from a while loop in python? @00 given how many times you've tried to get this right, maybe it wasn't as obvious as I thought! The question is, write a Python program that find and prints second largest number in a list of given size.The program To get the element at the second last index we have used negative indexing. WebI recently have started to learn how to code with python. method. In this tutorial, we have discussed different approaches for finding the second largest element in the list. Enter element of list 9 python-tutorials.in, Python program to find largest number in a list, Python program to find N largest elements from a list. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); If you are mentally stable please do not enter, Get notified when new articles are posted, How to find second largest number in python. We have declared an empty list in which we will insert the elements. 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Since you only expect positive numbers we can set our baseline to 0. Using lists is more easy and comfortable to work with in comparison to arrays. @MarkRansom Yes, that is perhaps a minor detail, but good practice overall. # than the first maximum then we. Python allows us to sort a list using the list() function. This article is created to cover some programs in Python, that find and prints second largest number or element array = [2, 3, 4, 2, 4, -3, 43, -4, -25, 45, 9] Conjecture about prime numbers and fibonacci numbers, When a matrix is neither negative semidefinite, nor positive semidefinite, nor indefinite? So using these techniques, lets try to find the various ranges of the number in a given list. Then, we will print the element present at the second last position after sorting. Contribute to the GeeksforGeeks community and help create better learning resources for all. second_largest = None rev2023.8.22.43592. JavaTpoint offers too many high quality services. 601), Moderation strike: Results of negotiations, Our Design Vision for Stack Overflow and the Stack Exchange network, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Call for volunteer reviewers for an updated search experience: OverflowAI Search, Discussions experiment launching on NLP Collective, Finding the second largest number out of 10 numbers entered using a for loop, Find the greatest (largest, maximum) number in a list of numbers, Python- Finding the largest number in a list using forloop or while loop, find second largest in the list of numbers. Approach#3: This task can be performed using max and pop methods of list. In this article, we will learn about the solution to the problem statement given below. The pop operation is O(n) so the overall complexity is O(n).The space complexity is O(1) as the code only uses a constant amount of extra space. for i in range(2,len(L)): The only difference is, this program uses a predefined There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. @elhamzohrehvand which following two code, mine and yours? There are multiple approaches here, some are faster, some are more expressive. second Remove the smallest and largest elements from the list.3. Cloudflare Ray ID: 7fae10afac7a4d9c You might argue that it's good practice to implement from zero ;). I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. Save my name, email, and website in this browser for the next time I comment. Use the min() and max() functions to find the smallest and largest elements. arr = [2, 3, 4, 2, 4, -3, 43, -4, -25, 45, 9] I might be wrong here but I would assume that as this is a beginner they might have it as an exercise to actually implement this, This changes the functionality. Is the product of two equidistributed power series equidistributed? WebFor executing this program in Python, there are multiple approaches we can follow: By sorting the list and printing the second maximum element. Enter element of list 8 Interactive Courses, where you Learn by writing Code. a = L[0] We will be following various approaches to find the second largest number in a list. print(max(new_list)) Follow the algorithm to understand the approach better, Step 1- Declare a function for finding the second largest number, Step 2- Use sort() method to sort the list, Step 3- Return the second last element in the list after sorting using negative indexing, Step 4- Declare a list and take input or initialise values, Step 6- Print the value returned by the function. Here is its sample run with user input, 5 as size of list and 2, 1, 1, 1, 1 as five numbers of list: This program does the same job as of previous program. You can gather the ages into a list, sort and then pull the numbers. MCQs to test your C++ language knowledge. Enter size of list 5 I will assume, that the user only enters valid numbers: I tried not to change your code too much, though I can literally code what you want with 6 or 8 lines of code. Tool for impacting screws What is it called? Input : list = [12, 45, 2, 41, 31, 10, 8, 6, 4]Output :Largest element is: 45Smallest element is: 2Second Largest element is: 41Second Smallest element is: 4, Input : list = [22, 85, 62, 40, 55, 12, 39, 2, 43]Output :Largest element is: 85Smallest element is: 2Second Largest element is: 62Second Smallest element is: 12. Enter element of list 2 Please use the comments section for feedback. I think my answer is more simple and more readable for beginners x=[2,3,4,2,5,9,8,4,5,6,7,8,9,2,1,3,4,5] This article is being improved by another user right now. Using this we can find various ranges of numbers in a list, from their position, after being sorted. In this article, we shall how we can use to find the second largest number in Python from a list. Python Program to find Second Largest We use cookies to enhance your browsing experience. if a < L[i]: Required fields are marked *. Enter element of list 6 By using our site, you I like writing tutorials and tips that can help other developers. 600), Medical research made understandable with AI (ep. in a given list. a = L[i] How could they short circuit and exit before 100 ages are entered? Problem statement We are given a list, we need to display the second largest number in a list. The end used in this program to skip insertion of an automatic newline. Let us have a glance at what we have done here-. 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Look at the program to understand the implementation of the above-mentioned approach. second largest in [9, 3, 6, 1] is Python Program to Find the Second Largest Number in a List Using Bubble Sort, C# program to find Largest, Smallest, Second Largest, Second Smallest in a List, Python program to find the largest number in a list, Python program to find largest number in a list, Program to find second largest digit in a string using Python, Java program to find Largest, Smallest, Second Largest, Second Smallest in an array, Find the Second Largest Element in a Linked List in C++, Python Program to Find the Largest Element in a Doubly Linked List, Program to find lexicographically largest mountain list in Python, Python program to find N largest elements from a list, Golang Program to Print the Largest Even and Largest Odd Number in a List, Python program to find the smallest number in a list, Program to find the largest grouping of anagrams from a word list in Python, C++ Program to find the second largest element from the array.

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