//a^a=0;a^0=a
#include <stdio.h>
int main()
{
int a[11]={
0,0,1,1,2,2,3,3,4,4,5};
int b=a[0];
//直接把数组中的元素异或一遍
for(int i=1;i<11;i++)
{
b=b^a[i];
}
printf("%d",b);
}
lq1.3 How to find the number placed in the array
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Origin blog.csdn.net/June159/article/details/108371553
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