561. Array Partition I
566. Reshape the Matrix
485. Max Consecutive Ones
122. Best Time to Buy and Sell Stock II
217. Contains Duplicate
628. Maximum Product of Three Numbers
268. Missing Number
35. Search Insert Position
53. Maximum Subarray
66. Plus One
118. Pascal's Triangle
vector(itn nSize):创建一个vector,元素个数为nSize。
vector(int nSize, const T& t):创建一个vector,元素个数为nSize,且值均为t。