What is the least number of concerts needed to be scheduled in order that each musician may listen, as part of the audience, to every other musician? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Java program to find Largest, Smallest, Second Largest, Second Smallest Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What is the least number of concerts needed to be scheduled in order that each musician may listen, as part of the audience, to every other musician? OP said they were positive and less than 100, so not a problem. Find the largest prime factor of a number. In this program we have build own logic to find the second largest element in the array. I'm also not convinced that it is slower. Thanks for sharing. Let's see the full example to find the second largest number in java array. How to help my stubborn colleague learn new ways of coding? With this you can implement it like: This solution needs no swap and three comparison '<' calls. Trying to make it faster will likely make it less readable. MathJax reference. You should use if.. else if structure inside your for loop: Run time of this algorithm is O(n). 3 Answers Sorted by: 1 At the very least swap these two lines: largest=number;//stores number to largest largest_2=largest;//stores largest to second largest or Share Improve this answer Follow answered May 8, 2015 at 17:51 Ishamael 12.6k 4 33 52 Add a comment 1 You need to change the largest_2 to largest BEFORE you update largest. It just exchanges the two values. Lets have a look at the java code for it below: Enter the size of the Array:5Enter 5 element(s) of the Array:248115The Second Largest Number in the Array: 8. To learn more, see our tips on writing great answers. Find Second Largest Element in an Array Refer to the Example and Explanation sections for more details about how to find second largest number in array and the Approach section to understand the explanation of how to find second largest number in array. def get_second_largest (arr): second_max = float ("-inf") max = float ("-inf") for i in range(0, len(arr)): item = int(arr [i]) if item > max: second_max = max max = item elif item > second_max and item < max: second_max = item return -1 if second_max == float("-inf") else second_max 9 Reply surajkumarsahani1997 39 February 10, 2022 5:57 AM For a solution that is easier to verify, I recommend this approach. Based on that, you have four return possibilities: a, b, c or -1 (error). Java Program to Find Second Largest Array Number using for loop. @Evan Bechtol Because when comparing, we compare smallest with current number and if current number is smaller than smallest , we change smallest to current number value. Find First and Second Largest Number in Array - Know Program Your email address will not be published. He created & maintains Techndeck.com, Copyright 2018-2022 Techndeck.com | All Rights Reserved. Enter size of array and then enter all the elements of that array. Using comparisons with. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. What is telling us about Paul in Acts 9:1? Why do we allow discontinuous conduction mode (DCM)? How to find the second largest number in an array using Java 8?, find second largest number in an array using java 8 stream, Find the Second Largest Number in an Array using Java 8 Stream, * Using Skip method of Java 8 Stream, Find the second largest number in an array, Find_Second_Largest_Number_In_Array_Java8Stream_Example1, "Second Largest Number in the Array is: ", check if text or string present in a file using java 8, In above example, It first sorts the array, then skips the last element (the largest one) using, * Using Skip and Limit method of Java 8 Stream, Find the second largest number in an array, Find_Second_Largest_Number_In_Array_Java8Stream_Example2, In above example, Itfirst sorts the array in descending order, then limits the stream to the first 2 elements using. I would also find the @JS1 answer easier to read than this. i edited and change the code. Copyright Tutorials Point (India) Private Limited. The best answers are voted up and rise to the top, Not the answer you're looking for? We'll assume you're ok with this, but you can opt-out if you wish. Is it unusual for a host country to inform a foreign politician about sensitive topics to be avoid in their speech? Define a comparator to compare strings by concat () right-to-left or left-to-right. Top two numbers: First: 98 Second: 79. This should be the accepted answer, in my opinion. Enter length of the array: 5. Suppose the array contains {11, 67, 88, 53, 2, 72} elements. We can find the second largest number in an array in java by sorting the array and returning the 2nd largest number. What is the cardinality of intervals in space, and what is the cardinality of intervals in spacetime? Your find_second() function is rather weird. How can I call second largest number from arrayList using collections Asked 4 years, 11 months ago Modified 1 year ago Viewed 21k times 0 I need highest, second highest and third highest numbers from my ArrayList. Very simple solution. you solution is missing the smallest one. Below is the implementation of above idea. Let's understand with the help of an example. Java Program to find second largest number in array java is there a limit of speed cops can go on a high speed pursuit? Select largest element from stream List<Integer> list = Arrays.asList(2, 4, 1, 3, 7, 5, 9, 6, 8); Optional<Integer> maxNumber = list.stream() .max((i, j) -> i.compareTo(j)); System.out.println(maxNumber.get()); Program output. It also doesn't need any other math operations: One more way to find the second maximum value among the 3 given values is to add all three numbers and remove the maximum and minimum values. All Rights Reserved. 1 15 The Second Largest Number in the Array: 8 Example #3. Java Program to Find Second Largest Array Number - Tutorial Gateway So the middle number is, $$ The stream is an abstract layer introduced by Java 8. Step 2 (first if conditionarr[i] > largest): If current array value is greater than largest value then, Move the largest value to secondLargest and make, Step 3 (second if conditionarr[i] > secondLargest), If the current value is smaller than largest and greater thansecondLargest then the current value becomes secondLargest. Before checking the solution, let's think for a moment, how do you approach this problem? Can a lightweight cyclist climb better than the heavier one by producing less power? I want to know if this method is a good approach in terms of readability and performance. Java Program to Find First and Second Largest Number in Array Using User-Defined Function. ArrayList<Integer> arrayList = new ArrayList<Integer> (); Add values in ArrayList. java - Finding largest number In While Loop | DaniWeb In above example, Itfirst sorts the array in descending order, then limits the stream to the first 2 elements using limit(2), then skip the first element using skip(1), and finally finds the first element in the remaining stream, which is the second largest number. It never finds the second-largest number if it is a. Let's see the full example to find the largest number in java array. Schopenhauer and the 'ability to make decisions' as a metric for free will, "Sibi quisque nunc nominet eos quibus scit et vinum male credi et sermonem bene". Then I compare the rest with max and possibly scmax. then when if i find a value greater than max, it becomes max and the old max becomes scmax. Java 8 How to find a STRING in a Text File? Please mail your requirement at [emailprotected]. Not the answer you're looking for? Examples: Input : arr [] = {22, 33, 14, 55, 100, 12} Output : 55 Input : arr [] = {35, 23, 12, 35, 19, 100} Output : 35 JavaTpoint offers too many high quality services. Also, we are more focused on review than code. How to find the largest value from an array in Java? How to check whether a String is a Palindrome or not in java? How to check if two strings are anagrams of each other? shawavisek35 Read Discuss Courses Practice Given an array arr [] consisting of N integers, the task is to find the second largest element in the given array using N+log2(N) - 2 comparisons. java - How can I call second largest number from arrayList using See also: Java Program to find the Smallest Number in an Array. then check my other helpful posts: Deepak Verma is a Test Automation Consultant and Software development Engineer for more than 10 years. Eliminative materialism eliminates itself - a familiar idea? Search again the max without the first max, so you get the second max. Find Second Largest Number in Array Java - Know Program Not the answer you're looking for? Let's see another example to get second largest number in java array using collections. Find the 2nd smallest number in a Java array. Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. How to write a JAVA method to find the Maximum of users input? @LcioCardoso Technically, it could still overflow if. Necessary cookies are absolutely essential for the website to function properly. Connect and share knowledge within a single location that is structured and easy to search. In this tutorial, you will learn how to write Java program to find second largest number in an array. OverflowAI: Where Community & AI Come Together, How to find the second largest number in for loops, Behind the scenes with the folks building OverflowAI (Ep. finding the second largest value in an array using java It doesn't make sense to call it three times from main(). Repeat this till the end of the array. Special numbers that might also be valid data are dangerous. Also, it scales to sequences of generic length. Why is {ni} used instead of {wo} in ~{ni}[]{ataru}? Your email address will not be published. The consent submitted will only be used for data processing originating from this website. Example 1: Input: N = 6 Arr[] = {12, 35, 1, 10, 34, 1} Output: 34 Explanation: The largest element of the array is 35 and the second largest element is 34. How to check whether a number is a perfect number or not in java? @RickSanchez Unfortunately that can overflow an. It only takes a minute to sign up. How to count the occurrence of the given character in a string in java? Java 8 - How to find the Second Largest Number in an Array? - Techndeck In this article, you will see how to find Second largest number in an Array using Java. All rights reserved. Return the two largest integers in an array of values, Searching through arraylists for the largest number, Return the index of the largest number in the array, print out the largest number in an ArrayList, finding the second largest value in an array using java, index of the largest item in the ArrayList, Find Two largest numbers in a list without using Array, Single Predicate Check Constraint Gives Constant Scan but Two Predicate Constraint does not. Your email address will not be published. $$. See live demo, I think the best way is to sort the numbers in an array then print the middle one. Eliminative materialism eliminates itself - a familiar idea? Now by using java streams we will find the second largest number in the list. How to calculate the factorial of a given number in java? That function should actually find the second value, even if it had to loop three times within the function to do so. I am not particularly strong in C++, bu here are my two cents. Great! You say, @mdfst13 Indeed. Your email address will not be published. Java program to find the second largest number in Array Thanks for contributing an answer to Code Review Stack Exchange! We can find the second largest number in an array in java by sorting the array and returning the 2nd largest number. Let's see another example to get second largest element or number in java array using collections. What is Mathematica's equivalent to Maple's collect with distributed option? Simplest Examples, Double the numbers of specified ArrayList using Streams, Double the even / odd numbers of a specified ArrayList using Streams, How to check if Number is Prime or not using Streams, Retrieve Even/Odd Numbers within the Range using Java 8 Streams, How to add/sum up the ArrayList integers using Java8 Streams, Generate Prime Numbers in Java 8 using Streams, Comparator example Collections sort with/without Lambda in Java 8. How to check whether an integer number is a prime number or not in java? my question is that I need to find the second largest value from my array but I am getting the same value which is equal to the first value. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. public class SecondLargestInArrayExample { public static int getSecondLargest (int[] a, int total) { int temp; for (int i = 0; i < total; i++) { Same qyestion was asked to me in interview I did little differrently, New! You have to decide when such a failure exists - for example, if I enter 1,1,1 what exactly is the second lowest number to be? rev2023.7.27.43548. 1. Read in the input, process it, output the results. Find Second largest element in an array Read Discuss (40+) Courses Practice Given an array of integers, our task is to write a program that efficiently finds the second-largest element present in the array. The sort function now sorts the three values such that afterwards, \$a \le b\$ and \$b \le c\$. Java Program to find Second Largest Number in an Array How can I print the largest number encountered in a loop? Given a positive integer \'n\' ( 1 <= n <= 10 15 ). S e c o n d. l a r g e s t ( a, b, c) = a + b + c m a x ( a, b, c) m i n ( a, b, c) This would be the function: By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Sci fi story where a woman demonstrating a knife with a safety feature cuts herself when the safety is turned off, Schopenhauer and the 'ability to make decisions' as a metric for free will. Example I need highest, second highest and third highest numbers from my ArrayList. Note that you'd likely have to do a large number of operations to get a good test, as both versions are going to be very fast on an individual basis. Since you implemented the Comparable interface on PartyNamesDTO you can just do, which will make your list sorted according to compareTo logic and if your sorting is ascending order then you can get max record as, and if it is descending order the other way around. Algebraically why must a single square root be done on all terms rather than individually? And what is a Turbosupercharger? How to find second largest number in an array in Java? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, New! And worst, your solution is wrong. Reverse the words in a given string sentence, Check whether a String is a Palindrome or not in Java, Check if the two strings are anagrams of each other. There are multiple ways to solve this problem. Learn more about Stack Overflow the company, and our products. Not the answer you're looking for? +1 because this approach works for generic comparables, instead of just ints (or numbers). at each comparison I adjust. To learn more, see our tips on writing great answers. So the second time you could be comparing the original a or b to the original c. Once sorted, we can just return b, which is the middle value. Agree Comment *document.getElementById("comment").setAttribute( "id", "a326599c31bce7277ade9415fd8cf0f1" );document.getElementById("e9f84a7fd5").setAttribute( "id", "comment" ); Techndeck.com is a blog revolves around software development & testing technologies. Check whether a character is a Vowel or Consonant. 594), Stack Overflow at WeAreDevelopers World Congress in Berlin, Given two Binary trees, find whether the second is a sub tree of the first, Given an array find any three numbers which sum to zero, Given an array, find any three numbers which sum to zero, Given an integer array of size n, find any three numbers, Greatest difference between numbers in list, SE main site tag ratings based on Wilson score confidence interval, Find the greatest common divisor of n numbers, Kotlin Stack using an ArrayList to compare and remove elements. If current element is greater than highest Assign secondHighest = highest Assign highest = currentElement Connect and share knowledge within a single location that is structured and easy to search. I forgot to explain that in the question, but the problem also tells us to assume the input is always positive. 594), Stack Overflow at WeAreDevelopers World Congress in Berlin, Temporary policy: Generative AI (e.g., ChatGPT) is banned, Preview of Search and Question-Asking Powered by GenAI, Find the second highest Score in a cricket match, Java: Finding the highest value in an array, Finding the second highest number in array. Start by stepping through and counting the number of comparisons (, In the edit, I said "assuming the numbers are always positive" (even though I know this solution wasn't reall clever). Once the count becomes 2, we print the node. So { 1, NaN, 2 } --> 1 (the 2nd greatest). Continuous Variant of the Chinese Remainder Theorem. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. or Write a program to Find 2nd largest digit in a given number Using C*/ #include<stdio.h> int main () { int num, reminder, Largest= 0,Sec_Largest=0; printf ("Enter the Number :"); scanf ("%d",&num); while (num > 0) { reminder = num % 10; if (Largest < reminder) { It also scales well. Join two objects with perfect edge-flow at any stage of modelling? How to reverse a string without using the reverse() method in java? Simplest Examples Click To Tweet. It is mandatory to procure user consent prior to running these cookies on your website. I did want to point out in I know the requirements stipulate that no input numbers are equal to any other - however, this code shows what could be done if two of the numbers might be equal, something I think would happen often in production code. highest number) by calling Collections.max() but I also need the second largest and the third largest values. How to find second largest number in an array in Java? The most efficient approach to find second largest number in array uses only one loop. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. New! Here the second largest number is 72 which is less than the . Initialize max and scmax(second max) with 2 first value of array. Lets see the java code below: The Second Largest Number in the Array: 12. The minimal solution requires only three comparisons, and can sometimes return after two. How to print a Fibonacci series up to a given number in Java? Find centralized, trusted content and collaborate around the technologies you use most. All published posts are simple to understand and provided with relevant & easy to implement examples. Asking for help, clarification, or responding to other answers. Thanks for contributing an answer to Stack Overflow! send a video file once and multiple users stream it? Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Here I have coded in Java Environment and used bubble sort technique. I've just coded this for my country's programming Olympiad. Second largest element = -20. This solution does that using the minimal amount of work/overhead and is therefore best. Asking for help, clarification, or responding to other answers. Finding Largest Number in an Array From User Input. Relative pronoun -- Which word is the antecedent? By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Find centralized, trusted content and collaborate around the technologies you use most. Find Second Largest Number in Array | DevGlan How to find the second largest number in an array in Java - Educative It sometimes finds the second-largest number if it is b or c. I don't know if your program works or not your main() tries to make up for the deficiencies in find_second() by calling it three times but the function name is a big fat lie. so at the beginning smallest should be the highest. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Iterate over array. Jonnie mentioned that he cannot use arrays in his solution. Share finding the second largest value in an array using java Ask Question Asked 4 years, 4 months ago Modified 10 months ago Viewed 9k times 1 my question is that I need to find the second largest value from my array but I am getting the same value which is equal to the first value. I also experimented with not having an else statement but it looked "unbalanced" so I just left it in. Java Program for Find largest prime factor of a number Learn more. If you wanted a different language, a functional one would be better (, @mdfst13: I agree completely. Java Program how to find second largest number in array This is a Java Program to Find the Second Largest & Smallest Elements in an Array. This problem can be solved by sorting strings, not sorting integer. How does this compare to other highly-active people in recorded history? To learn more, see our tips on writing great answers. To subscribe to this RSS feed, copy and paste this URL into your RSS reader.
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