摘要： Remove all elements from a linked list of integers that have value val.ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 2 -->... 阅读全文

摘要： Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Starting with any positive integer... 阅读全文

摘要： Given a range [m, n] where 0 >= 1; n >>= 1; shift++; } return (m << shift); }}; 阅读全文