LeetCode——Gray Code
Description:
The gray code is a binary numeral system where two successive values differ in only one bit.
Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0.
For example, given n = 2, return [0,1,3,2]
. Its gray code sequence is:
00 - 0
01 - 1
11 - 3
10 - 2
计算格雷码的十进制数。套用格雷码编码公式解决。
public class Solution { public List<Integer> grayCode(int n) { List<Integer> res = new ArrayList<Integer>(); for(int i=0; i<(1<<n); i++) res.add(i/2 ^ i); return res; } }
作者:Pickle
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