摘要：
Shuffling is a procedure used to randomize a deck of playing cards. Because standard shuffling techniques are seen as weak, and in order to avoid "ins... 阅读全文
摘要：
Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 2469135... 阅读全文
摘要：
一个数组A中存有N（N>0）个整数，在不允许使用另外数组的前提下，将每个整数循环向右移M（M>=0）个位置，即将A中的数据由（A0 A1……AN-1）变换为（AN-M …… AN-1 A0 A1……AN-M-1）（最后M个数循环移至最前面的M个位置）。如果需要考虑程序移动数据的次数尽量少，要如何设计... 阅读全文