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.h> in...
Processing a sorted array can be faster than processing an unsorted array because certain algorithms and operations have a lower average time complexity when the input is already sorted. For example, the time complexity of the binary search algorithm is O(log n) for a sorted array, ...
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....
With the Branch:There is a huge difference between the sorted and unsorted data. With the Hack:There is no difference between sorted and unsorted data. In the C++ case, the hack is actually a tad slower than with the branch when the data is sorted. A general rule of thumb is to avoid...
Java 7: An array as input好的,所以我应该以此作为代码的开头:[cc lang=java]public static int addOdds(int[] input){}[/cc]那将返回总和。我已经用预加...
Moreover, while using the enumeration, at anytime you can easily go back to the world of collection: "new List<Control>(enumeration);" or even simpler in C# 3.0: "enumeration.ToList();" Conclusion With this last solution, we have a lower and lightweight approach which is faster and doe...
use array subscripting, which runs in constant time, independent of the size of the array. A linked list has the property that the only way you can find a node is to start at one end of the list and follow the links from one node to the next, checking them one at a time. Unlik...
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