2013 Millet algorithm Problem

Title: In an array, except that the three numbers are the only ones that appear, the rest appear an even number to find any of the three numbers. For example, the array element is "1,2,3,5,2,3,4,4,6", only the 1,5,6 three number is the only occurrence, we only need to output one of the 1,5,6 in the line.

Ideas:

1. Sort 1,2,2,3,3,4,4,5,62. Find unique number 1) if x[i]==x[i+1] then i+=1 count++2) if x[i]!=x[i+1]&&count==0 then output x[i]3) else count=0

2013 Millet algorithm Problem