摘要： 题目如下： Given an array of integers, return the maximum sum for a non-empty subarray (contiguous elements) with at most one element deletion. In other wo 阅读全文

摘要： 题目如下： Given a date, return the corresponding day of the week for that date. The input is given as three integers representing the day, month and year  阅读全文

摘要： 题目如下： A bus has n stops numbered from 0 to n - 1 that form a circle. We know the distance between all pairs of neighboring stops where distance[i] is 阅读全文

摘要： 题目如下： With respect to a given puzzle string, a word is valid if both the following conditions are satisfied: word contains the first letter of puzzle. 阅读全文

摘要： 题目如下： Given a string s, we make queries on substrings of s. For each query queries[i] = [left, right, k], we may rearrange the substring s[left], ..., 阅读全文

摘要： 题目如下： Return the number of permutations of 1 to n so that prime numbers are at prime indices (1-indexed.) (Recall that an integer is prime if and only 阅读全文

摘要： 题目如下： A transaction is possibly invalid if: the amount exceeds $1000, or; if it occurs within (and including) 60 minutes of another transaction with t 阅读全文

摘要： 题目如下： Let's define a function f(s) over a non-empty string s, which calculates the frequency of the smallest character in s. For example, if s = "dcce 阅读全文

摘要： 题目如下： Given the head of a linked list, we repeatedly delete consecutive sequences of nodes that sum to 0 until there are no such sequences. After doin 阅读全文

摘要： 题目如下： Design your implementation of the circular queue. The circular queue is a linear data structure in which the operations are performed based on F 阅读全文