题目描述:
Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set.
get(key) - Get the value (will always be positive) of the key if the key exists in the ...
Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set.
get(key) - Get the value (will always be positive) of the key if the key exists in the ...
在许多编程语言中(Java,COBOL,BASIC),多维数组或者矩阵是(限定各维度的大小)预先定义好的。而在Python中,其实现更简单一些。
如果需要处理更加复杂的情形,可能需要使用Python的数学模块包NumPy,链接地址:http://numpy.sourceforge.net/
首先来看一个简单的二维表格。投掷两枚骰子时,有36种可能的结果。我们可以将其制成一个二维表格,行和列分别代表一枚骰子的得数:
1 2 3 4 5 6
1 2 3 4 5 6 7
2 3 4 5 6 7 ...