摘要: [抄题]: Given an array of n integers nums and a target, find the number of index triplets i, j, k with 0 <= i < j < k < n that satisfy the condition num 阅读全文
posted @ 2018-08-12 21:55 苗妙苗 阅读(156) 评论(0) 推荐(0)
摘要: [抄题]: Given two 1d vectors, implement an iterator to return their elements alternately. Example: Follow up: What if you are given k 1d vectors? How we 阅读全文
posted @ 2018-08-12 18:04 苗妙苗 阅读(263) 评论(0) 推荐(0)
摘要: [抄题]: Given an integer array, your task is to find all the different possible increasing subsequences of the given array, and the length of an increas 阅读全文
posted @ 2018-08-12 14:40 苗妙苗 阅读(172) 评论(0) 推荐(0)
摘要: [抄题]: Given a matrix of M x N elements (M rows, N columns), return all elements of the matrix in diagonal order as shown in the below image. Example: 阅读全文
posted @ 2018-08-12 09:37 苗妙苗 阅读(180) 评论(0) 推荐(0)
摘要: 1. 分解问题的角度: fix 某一维度,尝试另一维度上的所有可能 a. 可能是array的(i, j)pointers, b. 可能是矩形的长与宽, c. 可能是tree的每一个subtree, d. 可能是情景题的每一对pair...2. 求所有解的, 暴力上backtracking吧3. 如果 阅读全文
posted @ 2018-08-12 09:23 苗妙苗 阅读(317) 评论(0) 推荐(0)