n位二进制,求不包含连续1的二进制(n位)数字个数. http://www.geeksforgeeks.org/count-number-binary-strings-without-consecutive-1s/ 也可以令f[i],表示共i位的二进制数字中,不包含连续1的二进制(i位)数字的个数. f[i]的组成有两部分: 最高位为1:只有当次高位为0,且满足条件的二进制数字个数,即 f[i-2] 最高位为0:次高位为0或1且满足条件的数字个数,即f[i-1] 得: f[i] = f[i-2]…

Given a positive integer n, find the number of non-negative integers less than or equal to n, whose binary representations do NOT contain consecutive ones. Example 1: Input: 5 Output: 5 Explanation: Here are the non-negative integers <= 5 with their…

Leetcode600 很简单的一道计数题 给定整数n 求不大于n的正整数中 二进制表示没有连续的1的数字个数 在dp过程中只要保证不出现连续1以及大于n的情况即可. 所以设计按位dp[i][j]表示到第i位 j=0表示第i位为0 且值等于n的情况 2为值小于n的情况 j=1表示第i位为1 且值等于n的情况 3为值小于n的情况 转移方程很简单 看代码吧 这道题应该是Mid难度吧 class Solution { public: int findIntegers(int num) { int va…

Given a positive integer n, find the number of non-negative integers less than or equal to n, whose binary representations do NOT contain consecutive ones. Example 1: Input: 5 Output: 5 Explanation: Here are the non-negative integers <= 5 with their…

Given a positive integer n, find the number of non-negativeintegers less than or equal to n, whose binary representations do NOT contain consecutive ones. Example 1: Input: 5 Output: 5 Explanation: Here are the non-negative integers <= 5 with their c…

// Code goes here function countNegative (M, n, m) { count = ; i = ; j = m - ; && i < n) { ) { count += (j+) i += ; } else { j -= ; } } return count; } const M = [ [-,-,-,], [-,,,], [,,,,] ] console.log(countNegative(M, M.length, M[].length))…

[600] Non-negative Integers without Consecutive Ones [629] K Inverse Pairs Array [638] Shopping Offers [639] Decode Ways II [646] Maximum Length of Pair Chain [647] Palindromic Substrings 给定一个字符串,判断有多少子串是 palindromic 的,子串就算所有字母都相同,但是开始和结束位置的下标不同,也算不同…

Given an array with positive and negative integers. Re-range it to interleaving with positive and negative integers. Note: You are not necessary to keep the original order of positive integers or negative integers. Example Given [-1, -2, -3, 4, 5, 6]…

Given an array with positive and negative integers. Re-range it to interleaving with positive and negative integers. Example Given [-1, -2, -3, 4, 5, 6], after re-range, it will be[-1, 5, -2, 4, -3, 6] or any other reasonable answer. Note You are not…

Interleaving Positive and Negative Numbers 原题链接 : http://lintcode.com/zh-cn/problem/interleaving-positive-and-negative-numbers/ Given an array with positive and negative integers. Re-range it to interleaving with positive and negative integers. 注意 Yo…