600. 不含连续1的非负整数

600. 不含连续1的非负整数

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题目链接：600. 不含连续1的非负整数

代码如下：

//参考链接:https://leetcode.cn/problems/non-negative-integers-without-consecutive-ones/solutions/1750941/by-endlesscheng-1egu
class Solution
{
public:int findIntegers(int n){vector<int> dp(31);dp[0] = dp[1] = 1;for (int i = 2; i < 31; i++){dp[i] = dp[i - 1] + dp[i - 2];}int pre = 0, res = 0;for (int i = 29; i >= 0; --i){int val = 1 << i;if ((n & val) != 0){res += dp[i + 1];if (pre == 1) { break; }pre = 1;}else { pre = 0; }if (i == 0) { res++; }}return res;}
};