摘要： Swap Nodes in PairsGiven a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2-... 阅读全文

摘要： Reverse Nodes in k-GroupGiven a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a... 阅读全文

摘要： Divide Two IntegersDivide two integers without using multiplication, division and mod operator.If it is overflow, return MAX_INT.不能用乘法，我们可以移位啊，移p位就相当于... 阅读全文