编码
二进制编码的十进制数(BCD):Binary Coded Decimal美国信息交换标准代码(ASCII):American Standard Code for Information Interchange
数据的排列顺序
最低有效位(LSB)&…
文章目录 一、题目二、题解 一、题目
Given a 2D matrix matrix, handle multiple queries of the following type:
Calculate the sum of the elements of matrix inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2, col2)…