codingEskimo

摘要： Given an integer array arr, count element x such that x + 1 is also in arr. If there're duplicates in arr, count them seperately. Example 1: Example 2 阅读全文

摘要： Given an array of strings, group anagrams together. Example: Note: All inputs will be in lowercase. The order of your output does not matter. 这道题就是用每个 阅读全文

摘要： Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may comple 阅读全文

摘要： Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction 阅读全文