Largest unique number java Problem:Given an integer array nums, return the largest integer that only occurs once. Given an integer array nums, our job is to scan through this list, tally the occurrences of each number, and then determine which of these uniquely occurring numbers is the largest. SEO-Optimized Natural Paragraph for Ranking Want to determine the second highest number in an array in C, C++, Java, or Python? This tutorial provides the neatest and fastest code examples to identify the second highest value in a list. This allows for O (1) lookups and updates for each number. Alternatively, you can get all N numbers in a List and loop through that list to display the largest and smallest numbers. Solution. Largest Unique Number/largestUniqueNumber. Largest Local Values in a Matrix. But what will be the efficient algorithm when the array size is increasing and we have to find the nth largest number say array. Note: * A substring is Solutions of LeetCode problems. Jul 12, 2025 · Given a number N. May 7, 2025 · Flowchart: For more Practice: Solve these Related Problems: Write a Java program to find the second smallest and second largest values in a list of integers using streams after sorting. , digits that only occur once in the number—are referred to as unique numbers. Can’t you literally just sort the array from smallest to largest and then grab the second largest number with like [:-1] or something? Seems like that would solve your problem in like two seconds and you wouldn’t even need an algorithm Solutions of LeetCode problems. If no such integer exists, we return -1. Feb 1, 2014 · Keep an array of the 4 smallest (initialized to max positive number) and an array of the 4 largest (initialized to max negative). 3. Can you solve this real interview question? Largest Number - Given a list of non-negative integers nums, arrange them such that they form the largest number and return it. Jul 23, 2025 · Algorithm to find the largest of three numbers: 1. Jan 6, 2019 · 1133. The number 8 occurs only once, so it's the answer. Largest Unique Number / Aug 20, 2025 · Given an array of integers, the task is to find the length of the longest subsequence such that elements in the subsequence are consecutive integers, the consecutive numbers can be in any order. java Daily grind 🏃. Can you solve this real interview question? Largest Unique Number - Level up your coding skills and quickly land a job. Iterate over the hash table to find the numbers that appear exactly once. Contribute to prakashpnvs/Leetcode development by creating an account on GitHub. Can someone please explain how the code below is working and how is it finding the unique value? Finding the second largest number in a list of integers is a common problem that tests a programmer's ability to manipulate collections using Streams. LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript. Examples : Input : N = 2346 Output : 6 2 6 is the largest digit and 2 is smallest Input : N = 5 Output : 5 5 Approach: An efficient approach is to find all digits in the given number and find the largest and the smallest digit. . Scan through, comparing to largest small and smallest large. else statement in Java. Example 2: Jun 6, 2025 · The operation needs to differentiate between distinct numbers and their counts. Then, we traverse the array in reverse order to find the first number that appears only once. Largest Unique Number - Week 1/5 Leetcode October Challenge Programming Live with Larry 32. In this article, we will discuss how to find second largest number in an Arrays and List using Java 8 Stream Read Java – Find Read More Can you solve this real interview question? Largest Unique Number - Level up your coding skills and quickly land a job. The first case when you can get firstLargeNo == secondLargeNo is at the moment of initialization, which can lead to an incorrect result if secondLargeNo will not get a chance to be reassigned (it would be the case when two largest values would be located at the very Jan 8, 2025 · Leetcode Hash Largest Unique Number. Find the largest unique number: Iterate through the hash map and check which numbers have a count of exactly one. Example 2: Can you solve this real interview question? Largest Unique Number - Level up your coding skills and quickly land a job. Since the result may be very large, so you need to return a string instead of an integer. Utilize a dictionary to count occurrences of each number in the array. 2 KB main Breadcrumbs leetcode-in-Java / solution / 1100-1199 / 1133. Check if A is greater than B. Read the three numbers to be compared, as A, B and C 3. Jul 9, 2012 · If we have to find multiple times the nth largest numbers in the same array the best would be to sort O (NlogN) and then find the number in O (1) time complexity. Keep track of the largest such number seen so far. Write a Java program to extract the second smallest and second largest numbers from a list by first removing duplicates using streams. 1 If true, then check if A is greater than C If true, print 'A' as the greatest number If false, print 'C' as the greatest number 3. Feb 7, 2022 · 1 ^ 0 = 1 1 ^ 1 = 0 0 ^ 0 = 0 0 ^ 1 = 1 So, if the values are different XOR returns 1 or a non negative value in case of other numbers but I still don't get how this is helping me to solve this. Input: arr [] = [1,1,1,2,2,3] Output: 3 Explanation: The subsequence [1, 2 Solutions of LeetCode problems. Reverse Linked List II. java","path":"946. Largest Unique Number Given an array of integers A, return the largest integer that only occurs once. Can you solve this real interview question? Largest 3-Same-Digit Number in String - You are given a string num representing a large integer. Start 2. length Feb 20, 2021 · A walkthrough on how to solve a single number locater algorithm question using the handy XOR operator in JavaScript Solutions for Algorithm and Data Structure problems from LeetCode - LeetCode/1133. java","contentType":"file"},{"name":"977. Follow up: Your algorithm's time complexity must be better than O(n log n), where n is the array's size. If no such number exists, return -1. The number 8 occurs only once, so it is the answer. java at master · notruilin/LeetCode · GitHub notruilin / LeetCode Public Notifications Fork 0 Star 2 Projects Wiki Security Insights Can you solve this real interview question? Largest Unique Number - Level up your coding skills and quickly land a job. Largest Unique Number. Apr 25, 2021 · Largest Unique Number Java Solution Question : Given an array of integers A, return the largest integer that only occurs once. * It consists of only one unique digit. An integer is good if it meets the following conditions: * It is a substring of num with length 3. length/2 th largest. The number 11 occurs only once, so it's the answer 1133. This is the best place to expand your knowledge and get prepared for your next interview. java at master · notruilin/LeetCode · GitHub notruilin / LeetCode Public Notifications Fork 0 Star 2 Projects Wiki Security Insights Jul 12, 2025 · Given a number N. Better than official and forum solutions. Example History History 20 lines (17 loc) · 483 Bytes master Breadcrumbs algorithms / src / main / java / algorithms / curated170 / easy / largestuniquenumber / -Largest-Unique-Number Given an array of integers, identify the highest value that appears only once in the array. java","contentType":"file"},{"name":"946. In other words, a unique number doesn’t contain any digits that are repeated. Validate Stack Sequences. java at master · dsupriya/LeetCode Use a hash map (dictionary) to count how many times each number appears in A. It is guaranteed that the answer is unique. Return -1 if no unique number exists. Think about the Jul 23, 2025 · Approaches to Find the Largest Element in an Array Below are the 4 main approaches: Iterative Approach Java 8 Stream Sorting Using Collections. 1133. Contribute to Arya-Nandyal-Personal/leetcode development by creating an account on GitHub. Unique Number of Occurrences in Python, Java, C++ and more. Leetcode 1133 - Largest Unique Number Shafik Quoraishee 67 subscribers Subscribed May 20, 2023 · What is a Unique Number in Java? Positive integers with only distinct digits—i. Squares of a Sorted Array. See full list on baeldung. May 29, 2015 · Isn't the OP asking for the 3 largest numbers in an array list of n numbers? Why are you giving the largest number among 3 numbers? Can you solve this real interview question? Largest Unique Number - Level up your coding skills and quickly land a job. Key Insights Use a hash table (or dictionary) to count the frequency of each number. Sep 25, 2023 · The user will keep entering an integer number on each iteration and you would be printing the largest and smallest number. In-depth solution and explanation for LeetCode 1207. Example 1: Input: nums = [5,7,3,9,4,9,8,3,1] Output: 8 Explanation: The maximum integer in the array is 9 but it is repeated. May 30, 2025 · Question: Find the Second Largest Number in an Array Write a function secondLargest (arr) that takes an array of numbers and returns the second largest unique number in the array. length <= 10 5 -10 4 <= nums[i] <= 10 4 k is in the range [1, the number of unique elements in the array]. This is one of the most co May 30, 2024 · Strobogrammatic Number is a number whose numeral is rotationally symmetric so that it appears the same when rotated 180 degrees. 2 If false, then check if B is greater than C If true, print 'B' as the greatest number If false, print 'C' as the print (sorted (set (a)) [-2]) It results in the second largest unique number but needs to sort (O (n log n)). Unique Number Examples: Let’s look at a few examples of unique numbers in Java to better understand their distinctive digit patterns. Contribute to GarhomLee/LeetCode development by creating an account on GitHub. Nov 11, 2023 · LeetCode 1133 | Largest Unique Number | Counting Array | HashMap | Sorting | Debug | Java Sleepy Cracker 720 subscribers Subscribed Jun 9, 2022 · It seems like you are looking the second-largest unique number in the array. length/3 th largest or array. If no number is unique, return -1. In-depth solution and explanation for LeetCode 1133. com Given the data range in the problem, we can use an array of length 1001 to count the occurrence of each number. Largest Unique Number Description Given an integer array nums, return the largest integer that only occurs once. Example 1: Input: [5,7,3,9,4,9,8,3,1] Output: 8 Explanation: The maximum integer in the array is 9 but it is repeated. Example 1: Input: nums = [10,2] Output: "210" Example 2: Input: nums = [3,30,34,5,9] Output: "9534330" Constraints: * 1 <= nums. Solution Explanation: Largest Unique Number The problem asks to find the largest integer in an array that appears only once. Also keep a value that is the largest "small" and another that is the smallest "large", similarly initialized. Largest Unique Number in Python, Java, C++ and more. LeetCode/1133. java","contentType":"file"},{"name":"92. Return the maximum good integer as a string or an empty string "" if no such integer exists. Daily grind 🏃. e. Identify the maximum number among the unique numbers. Intuitions, example walk through, and complexity analysis. 9K subscribers Subscribe Day-1 of the Java Streams Interview Challenge!In this video, we solve: How to find the second largest number in Java using Streams. // Name: Monisha Jain // Qualificaton: MCA // College: PES (Bengaluru) Jun 5, 2025 · Given an array arr [], the task is to find the top three largest distinct integers present in the array. If no integer occurs once, return -1. java","path":"977. The task is to find the largest and the smallest digit of the number. java","path":"92. Iterative Approach The most common method to find and print the largest element of a Java array is to iterate over each element of the array and compare each element with the largest value Largest Local Values in a Matrix. Contribute to varunu28/LeetCode-Java-Solutions development by creating an account on GitHub. Examples: Input: arr [] = [2, 6, 1, 9, 4, 5, 3] Output: 6 Explanation: The longest consecutive subsequence [2, 6, 1, 4, 5, 3]. Solutions of LeetCode problems. If the array contains all equal elements or only one unique element, return: "No second largest found" Online Stock Span. In other words, Strobogrammatic Number appears the same right-side up and upside down. Use a hash map (dictionary) to count how many times each number appears in A. Latest commit History History 110 lines (81 loc) · 2. C Program To Find Largest and Second Largest Number in An Array Explained in Hindi, Java Program to Find the Second Highest Number in an Array, Key Insights Use a hash table (or dictionary) to count the frequency of each number. Example 1: Input: [5,7,3,12,4,12,11,3,1] Output: 11 Explanation: The maximum integer in the array is 12 but it is repeated. max () 1. Requirements The array must contain at least two numbers. java File metadata and controls Code Blame 21 lines (16 loc) · 553 Bytes Raw In this program, you'll learn to find the largest among three numbers using if else and nested if. Constraints: 1 <= nums. Note: If there are less than three distinct elements in the array, then return the available distinct numbers in descending order. spijgdz zwbb yjiqey nfcr wyuaa yjgi grvkq xbe iath hwnpejsl gmohnn xwbx dizba qnmsq ljbgcaa