摘要：Given a string arraywords, find the maximum value oflength(word[i]) * length(word[j])where the two words do not share common letters. You may assume t... 阅读全文

摘要：Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your 阅读全文

摘要：You are given an integer array nums and you have to return a new counts array. The countsarray has the property where counts[i] is the number of small 阅读全文