max and second max in array

This has an average case time complexity of. Find Maximum And Second Maximum Number In Array Airline refuses to issue proper receipt. What if the array has values like {-2,-3,-4}? As before, each call to .max() returns an array of maximum scores for all the students in the relevant class, one element for each test. I've gone with the 1st one, as it makes sense (at least to me) and that is what even the library std::nth_element would do. Maximum in an array that can make another array sorted Given two arrays of ints, a and b, try to create an arithmetic sequence by adding ints from b into a. arr[wpos+1]. Connect and share knowledge within a single location that is structured and easy to search. so is it ok to post this code or should i remove it? At first travers arr1[] and find incorrect element such. Check if the second max does not contain any value. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. How can I find the second maximum number in an array with the smallest complexity? Or computational efficiency? Given an unsorted array, we have to write a PHP program to find the second largest number in an array. How feasible is a manned flight to Apophis in 2029 using Artemis or Starship? Do I have a misconception about probability? Lets suppose we have given an array of unsorted integers of size N. The task is to find the distinct max and second max element which are present in the array. Pop that element, and then search for the max again. This gives you the second-highest value.## "Python 3". Pair MaxMin (array, array_size) if array_size = 1. return element as both max and min. Practice Given an array arr [] of N distinct positive integers, let's denote max (i, j) and secondMax (i, j) as the maximum and the second maximum element of the subarray arr [ij]. A small optimization, you can compare the current array element in the loop with second_max first and then if that passes, then compare with max. You'd want to sort the numbers, then just take the second largest. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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Maximum array sum that can be obtained after exactly k changes in C++, Check whether an array can fit into another array by rearranging the elements in the array, Check if an array is sorted and rotated in C++. What do you mean by 'smallest complexity'? And depending on descending or ascending, display the second or the 2nd last element respectively. Hence "magic". It uses additional memory, but it faster than random selection algorithm in worst case. When updating second maximum, be aware that you are not making maximum and second maximum equal. What are some compounds that do fluorescence but not phosphorescence, phosphorescence but not fluorescence, and do both? How many alchemical items can I create per day with Alchemist Dedication? It should be safe to use it on mylist itself instead of mylist[:]. Tested for sorted input (ascending and descending), random input, input having duplicates, works fine. Is there a way to speak with vermin (spiders specifically)? Example 1: Input: N = 6 A [] = {3, 2, 1, 56, 10000, 167} Output: min = 1, max = 10000 Example 2: Input: N = 5 A [] = {1, 345, 234, 21, 56789} Output: min = 1, max = 56789 Your Task: You don't need to read input or print anything. a[0]. I'll leave that to you to decide and adjust accordingly. Find all unique pairs of maximum and second maximum elements over all Use two for loops to display the second largest and second smallest element in an array. How to find second largest number in an array in Java? How can kaiju exist in nature and not significantly alter civilization? English abbreviation : they're or they're not. Sorting has a complexity O (n * log (n)) (if done correctly), while you can find the maximum in a linear time. Find your second largest number without using any String function: Here is an answer with a single for loop. a = [2, 4, 8], b = [1, 6, 10, 12] -> a = [2, 4, 6, 8, 10, 12] -> return 6, I tried creating a new array and merging both a and b and counting the longest subsequence but the count could remove elements from a which should not be touched, a = [2, 4, 8], b = [1, 6, 10, 12] -> a = [2, 4, 6, 8, 10, 12] -> return 6 @Anders: Exactly. Why is a dedicated compresser more efficient than using bleed air to pressurize the cabin? Asking for help, clarification, or responding to other answers. Then I compare the rest with max and possibly scmax. Max and Second Max | thiscodeWorks NumPy's max() and maximum(): Find Extreme Values in Arrays Can somebody be charged for having another person physically assault someone for them? If you are not using an index variable, it would make more sense to pass a pointer into the function. To find the distinct element, we will check whether the current element is equal to max or not. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You should find the maximum in the list and save its index. What should I do after I found a coding mistake in my masters thesis? You first set it to be equal to the first element in the array and then you go through the array and change the index if the element is greater than the current second largest number (which will never be true because we already set it to be the largest number!). Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. The maximum product is the (-10, -3) or (5, 6) pair. Why is there no 'pas' after the 'ne' in this negative sentence? Which returns the max and second max element of the given array. Arrays arr1[] and arr2[] are used to store numbers. Is saying "dot com" a valid clue for Codenames? By using our site, you Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Can i refer an element of one array from another array in java? Given two arrays among which one is almost sorted with one element being in the wrong position making the array unsorted, the task is to swap that element with the maximum element from the second array which can be used to make the first array sorted. The last element will be the largest and the second last element will be second largest. 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Term meaning multiple different layers across many eras? A car dealership sent a 8300 form after I paid $10k in cash for a car. Which returns the max and second max element of the given array. Program to find largest and second largest number in array 2. Clearly, the required XOR values are 3, 1 and 1 respectively.Input: arr[] = {1, 8, 2}Output: 9. Python program to find second largest number in a list Find minimum and maximum element in an array - GeeksforGeeks To solve it you can special case this: check if the largest number was the first and if so then set it to the second element (and then special case the issue of someone asking to find the highest two elements in a one element array, without reading past the end of an array.). Input Arr1[]= { 1,3,5,7,2,11 }, Arr2[]= { 4,8,7,10,9 } Output Maximum element that can make Arr1 sorted: 10 All Rights Reserved. Thanks for contributing an answer to Stack Overflow! We use what we have to get the results we need. The problem with your code is a logic problem (which is what most coding is about). 592), Stack Overflow at WeAreDevelopers World Congress in Berlin, Temporary policy: Generative AI (e.g., ChatGPT) is banned. https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_153446, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#answer_87999, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_153456, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_153469, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_153472, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_153505, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_331892, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_331894, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_535436, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_669624, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#answer_159181, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_493022, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_529900, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_668439, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_675293, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_1049306, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_1050441, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#answer_289603, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_1814905, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#answer_88002, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#comment_153450, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#answer_289577, https://www.mathworks.com/matlabcentral/answers/78278-how-to-find-second-largest-value-in-an-array#answer_996180. It works exactly as you said. In the array [1,2,3,3] what is the second largest? Do I have a misconception about probability? If element larger than this is found, update max value. Find second largest element from an array - LeetCode Discuss For example: "Tigers (plural) are a wild animal (singular)". This never pushes the first down to second place. "Print this diamond" gone beautifully wrong, - how to corectly breakdown this sentence. We are given an array of numbers say Arr1[] and another array Arr2[] of same or different Geonodes: which is faster, Set Position or Transform node? You need to preserve the index of array members better as they are unique Here is a working code with few changes: Note that when the array is of size 1 values will be the same. Other way to solve this problem, is to use comparisons among the elements. Should I trigger a chargeback? Find the treasures in MATLAB Central and discover how the community can help you! Connect and share knowledge within a single location that is structured and easy to search. Second largest : 12. Return the two largest integers in an array of values. For example, Suppose a class has 27 students, and we need to store the grades of all of them. So we have to find only distinct elements. Initialize the array. Get the index of the element which is making the array unsorted. Show us some code. Conclusions from title-drafting and question-content assistance experiments Find the second highest Score in a cricket match, Java: Finding the highest value in an array, Finding the second highest number in array. Can you solve it without sorting? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. What you can do instead is to take the first 2 elements of the array (assuming the array has at least 2 elements), compare them, assign the smaller one to second_max and the larger one to max: Then start comparing from the 3rd element and update max and/or second_max as needed: The easiest solution would be to use std::nth_element. use this code: Step 2 (first if condition arr[i] > largest): If current array value is greater than largest value then, Move the largest value to secondLargest and make, Step 3 (second if condition arr[i] > secondLargest ), If the current value is smaller than largest and greater than secondLargest then How did this hand from the 2008 WSOP eliminate Scott Montgomery? If it can be found, try to see if smaller gap can build longer arithmetic sequence by looping through all the divisor of the original "gap" as the new "gap" and test again. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. untill now i just get to find maximum and minimum value for each row. The upper bound should have be n+log2n2, but it bigger than O(n) in case of random selection algorithm, but in worst case it much smaller. How can kaiju exist in nature and not significantly alter civilization? The value of the maximum where the logical index is zero, is left out. max_min (b, end, &big, &small); And then inside the function, you'd . What should I do after I found a coding mistake in my masters thesis? How many alchemical items can I create per day with Alchemist Dedication? Find First and Second Largest Number in Array - Know Program Hence, it can be shown that each element except the first and the last can act as the second maximum element at most 2 times only. How high was the Apollo after trans-lunar injection usually? Next you give this logical array as an input argument to the data x itself, which returns all values of x where the logical array is equal to one. Conclusions from title-drafting and question-content assistance experiments Get next highest number in an ObservableCollection column, C++ - Finding greatest 2 numbers out of 3. How high was the Apollo after trans-lunar injection usually? int[] a = {5,7,13,14}, b = {9,11,15}; return -1 not 6, if(d[j].containsKey(diff)){ len = d[j].get(diff) +1; }. Downvoting, because although the point is valid, it is not relevant to the question. $max Returns the maximum value. If a[0] is the largest, the condition in the second for loop will always be false, and largest1 and largest2 will both be a[0]. length. To learn more, see our tips on writing great answers. - how to corectly breakdown this sentence. Thank you for your valuable feedback! Select the China site (in Chinese or English) for best site performance. Thanks for contributing an answer to Stack Overflow! Find the second maximum number in an array with the smallest complexity, Improving time to first byte: Q&A with Dana Lawson of Netlify, What its like to be on the Python Steering Council (Ep. In some cases arrays DO "magically" appear. Sorting has a complexity O(n * log(n)) (if done correctly), while you can find the maximum in a linear time. Second Largest | Practice | GeeksforGeeks Yes i tried that working good! Algorithm Start Declare an array. Here is the code to find the 2nd largest number in the list without using any inbuilt functions. Note: I just modify what Walter Roberson suggest. Also, the element chosen from Arr2[] should be maximum if there are multiple options available. To learn more, see our tips on writing great answers. Here is the code to find the 2nd largest number in the list without using any inbuilt functions. Why is a dedicated compresser more efficient than using bleed air to pressurize the cabin? To handle duplicate values, convert mylist into set using set(mylist) call and pass it to sorted function. %s is the number highest number will be shown, You may receive emails, depending on your. 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For example. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. acknowledge that you have read and understood our. How can I create a script that examines a list of numbers to determine the second largest number? How is this answer any different than the accepted answer or Dmitry's answer? Here you are looking for differences in a map of some index j, and there should be only one map of key value paires, not array of maps. You can only use two loops(one for insertion and another is for checking. Find Second Largest Number Without Arrays, Read the second largest number in an array. public class SecondLargestInArrayExample { public static int getSecondLargest (int[] a, int total) { int temp; for (int i = 0; i < total; i++) { Given an array Arr of size N, print second largest distinct element from an array. Use the builtin sorted oy mylist, which will not modify mylist(thanks to @Tofystedeth), ##This will work even if numbers are negative. Program to find largest element in an Array - GeeksforGeeks What are some compounds that do fluorescence but not phosphorescence, phosphorescence but not fluorescence, and do both? Kth Largest Element in an Array - LeetCode For example; for your original code the data is coming from the user; and by keeping track of "largest and second largest value that the user entered" inside of the loop that gets values from the user the overhead of tracking the information will be hidden by the time spent waiting for the user to press key/s, you no longer need to do a search afterwards while the user is waiting for results, and you no longer need an array at all.