你说计算机算法和数据结构和数学关系挺大的?我怎么没感觉呢?数据结构和数学有什么关系呢,

计算机算法的题
Develop an algorithm which takes as input a single 9-digit integer representing a Social Insurance Numbers (SIN) and determines whether or not it is valid.The algorithm should output if the SIN is valid or not.The rules determining the validity of a SIN are best described in an example.Consider the number 620187252 as a possible SIN number.Positions specified below are read from right to left and counting starts from 1.
1.Multiply every even positioned digit by 2.
(2x2=4,1x2=2,7x2=14,5x2=10)
2.For each result from step 1 add all the digits from each result together.
(4+2+1+4+1+0 = 12)
3.Add the last 4 odd positioned digits of the SIN together.
(6+0+8+2 = 16)
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4.Add the results of steps 2 and 3 together.
(12+16 = 28)
5.Subtract the units digit of the total from step 4 from 10,unless the units digit is 0,in which case use it.
(10-8 = 2)
6.A SIN is valid if the digit from step 5 is the same as the least significant digit in the SIN and the most significant digit matches a used region digit according to the following list:
0 not used
1 Atlantic Provinces
2 Quebec
3 not used
4 Ontario
5 not used
6 Prairie Provinces
7 British Columbia
8 not used
9 not used
(in the example,the SIN is a valid number which was issued in the Prairie Provinces)

计算机算法是问题规模n的函数f(n),算法的时间复杂度也因此记做:T(n)=O(f(n))
是吗也是.能解释下吗?我数学差的.

【急】计算机算法问题求解答!

如图：已知A、B为圆上两点,已知A点坐标为（X,Y）和两半径夹角β的值,求B点坐标.
写出算法设计,要高效简单容易实现的.