James Pan

原题网址：https://leetcode.com/problems/wiggle-sort/Given an unsorted array nums, reorder it in-place such that nums[0] = nums[2] .For example, given nums = [3, 5, 2, 1, 6, 4], one possible ans

原题网址：https://leetcode.com/problems/zigzag-iterator/Given two 1d vectors, implement an iterator to return their elements alternately.For example, given two 1d vectors:v1 = [1, 2]v2 = [3, 4

原题网址：https://leetcode.com/problems/isomorphic-strings/Given two strings s and t, determine if they are isomorphic.Two strings are isomorphic if the characters in s can be replaced to get t.

原题网址：https://leetcode.com/problems/strobogrammatic-number/A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down).Write a function to determ

原题网址：https://leetcode.com/problems/zigzag-conversion/The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a

原题网址：https://leetcode.com/problems/spiral-matrix/Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order.For example,Given the following mat

原题网址：https://leetcode.com/problems/spiral-matrix-ii/Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order.For example,Given n = 3,You should retu