Given preorder and inorder traversal of a tree, construct the binary tree. Note: You may assume that duplicates do not exist in the tree. 根据先序和中序遍历还原二叉树。 思...

Follow up for "Find Minimum in Rotated Sorted Array": What if duplicates are allowed? Would this a

Given a sorted integer array without duplicates, return the summary of its ranges. For example, given [0,1,2,4,5,7], return ["0->2","4->5","7"]. 给一个排序好的数组，将相......

该文介绍了如何求一个整数数组的所有可能子集，包括不包含重复元素的子集和包含重复元素的子集，并针对包含重复元素的情况给出了具体的解决方案。...