Python3解leetcode Count Binary Substrings

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Python3解leetcode Count Binary Substrings

问题描述: Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings are grouped consecutively. Substrings that occur multiple times are counted the…

[LeetCode] Count Binary Substrings 统计二进制子字符串

Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings are grouped consecutively. Substrings that occur multiple times are counted the numbe…

LeetCode Count Binary Substrings

原题链接在这里:https://leetcode.com/problems/count-binary-substrings/description/ 题目: Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings are gr…

Python3解leetcode Count Primes

问题描述: Count the number of prime numbers less than a non-negative number, n. Example: Input: 10 Output: 4 Explanation: There are 4 prime numbers less than 10, they are 2, 3, 5, 7. 思路: 1.最暴力的方法就是循环遍历,用两个for循环嵌套实现,但是整个代码运行时间太长,提交通不过 2.采用'Sieve of Eratos…

696. Count Binary Substrings - LeetCode

Question 696. Count Binary Substrings Example1 Input: "00110011" Output: 6 Explanation: There are 6 substrings that have equal number of consecutive 1's and 0's: "0011", "01", "1100", "10", "0011"…

【Leetcode_easy】696. Count Binary Substrings

problem 696. Count Binary Substrings 题意:具有相同个数的1和0的连续子串的数目: solution1:还不是特别理解... 遍历元数组,如果是第一个数字,那么对应的ones或zeros自增1.然后进行分情况讨论,如果当前数字是1,然后判断如果前面的数字也是1,则ones自增1,否则ones重置为1.如果此时zeros大于ones,res自增1.反之同理,如果当前数字是0,然后判断如果前面的数字也是0,则zeros自增1,否则zeros重置为1.如果此时one…

LeetCode 696. Count Binary Substrings

Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings are grouped consecutively. Substrings that occur multiple times are counted the numbe…