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Maintain a min-heap with size = k, to collect the result. //Find K minimum values from an unsorted array //Implement Min-Heap public int[] findKMax(int[] arr, int k){ if(arr == null || arr.length == 0) return null; int[] result = new int[k]; for(int…
UVA - 11997 K Smallest Sums Time Limit: 1000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu [Submit]   [Go Back]   [Status] Description   Problem K K Smallest Sums You're given k arrays, each array has k integers. There are kk ways to pick…
Problem K K Smallest Sums You're given k arrays, each array has k integers. There are kk ways to pick exactly one element in each array and calculate the sum of the integers. Your task is to find the k smallest sums among them. Input There will be se…
UVa11997 K Smallest Sums  题目: K Smallest Sums You're given k arrays, each array has k integers. There are kk ways to pick exactly one element in each array and calculate the sum of the integers. Your task is to find the k smallest sums among them. In…
11997 - K Smallest Sums You’re given k arrays, each array has k integers. There are kk ways to pick exactly one element in eacharray and calculate the sum of the integers. Your task is to find the k smallest sums among them.InputThere will be several…
Let's say we are given an array: [,,,,,,] We want to get K = 3 smallest items from the array and using Max heap data structure. So this is how to think about it. 1. We take first K items put it into Max Heap: 5 /     \ 4          1 2. Then we move fo…
Q1: Find the smallest value from array: function findMin(arr) { let min = arr[0]; for (let i = 1; i < arr.length; i++) { if (arr[i] < min) { min = arr[i]; } } } O(n), cannot be improved anymore, because we have to loop though the array once. Q2: Fin…
UVA - 11997 id=18702" target="_blank" style="color:blue; text-decoration:none">K Smallest Sums Time Limit: 1000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu Submit Status You're given k arrays, each array has k…
这是我在逛 Stack Overflow 时遇见的一个高分问题:Why is processing a sorted array faster than an unsorted array?,我觉得这是一个非常好的用来讲分支预测(Branch Prediction)的例子,分享给大家看看 一.问题引入 先看这个代码: #include <algorithm> #include <ctime> #include <iostream> #include <stdint…
(referrence: GeeksforGeeks, Kth Largest Element in Array) This is a common algorithm problem appearing in interviews. There are four basic solutions. Solution 1 -- Sort First A Simple Solution is to sort the given array using a O(n log n) sorting alg…