English 中文(简体)
使用 XOR 属性[封闭]在数组中查找修改后的元素
原标题:finding out modified element in an array using XOR property [closed]

这个问题试图从"http://www.carercup.com/ question?id=13718667" rel="no follow">这里

如何在数组中找到修改后的元素?

Eg: Array A= {1,2,3,4,5,6} before modifiction After modification A={1,2,3,7,5,6}. Here the element 4 is replaced with element 7.

有些人用 XOR 属性来解决这个问题

 int getModifiedElement(int arr1[ ],int arr2[ ])
       {
                   int xor1 = arr1[0];
                   int xor2 = arr2[0];
                              for(int i=1;<i<arr1.length;i++)
                              {
                                     xor1 = xor1 ^ arr1[i];
                                     xor2 = xor2 ^ arr2[i];
                              }
             return xor1^xor2;
            }

我不清楚用什么XOR财产来解决问题?

问题回答

xor 是连通和通俗的,因此当 xor1 xor1 xor1> 将来自阵列1和xor2 的所有元素加在一起时,这两个未修改的元素都存在于阵列2中,因此,在 x1 {xor2 中,这些元素被重新删除,因为 xxxxx=0 ,因此在 >xor1 {xor2 中,剩下的是 old_新的 ,这就是从旧的修改到变换的阵列元素。

然而,它既没有说明什么是旧元素,也没有说明新元素是什么,因此它“强”不是 " /强 " 解决了所说的问题。





相关问题
Fastest method for running a binary search on a file in C?

For example, let s say I want to find a particular word or number in a file. The contents are in sorted order (obviously). Since I want to run a binary search on the file, it seems like a real waste ...

Print possible strings created from a Number

Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone s keypad. i.e. for 1,0-> No Letter for 2->...

Tips for debugging a made-for-linux application on windows?

I m trying to find the source of a bug I have found in an open-source application. I have managed to get a build up and running on my Windows machine, but I m having trouble finding the spot in the ...

Trying to split by two delimiters and it doesn t work - C

I wrote below code to readin line by line from stdin ex. city=Boston;city=New York;city=Chicago and then split each line by ; delimiter and print each record. Then in yet another loop I try to ...

Good, free, easy-to-use C graphics libraries? [closed]

I was wondering if there were any good free graphics libraries for C that are easy to use? It s for plotting 2d and 3d graphs and then saving to a file. It s on a Linux system and there s no gnuplot ...

Encoding, decoding an integer to a char array

Please note that this is not homework and i did search before starting this new thread. I got Store an int in a char array? I was looking for an answer but didn t get any satisfactory answer in the ...

热门标签