求两个逆序数之和python 如何用python编程900级逆序，线性代数里的逆序和逆序数
C\u8bed\u8a00\u5199\u51fd\u6570fun\u6c42\u4e00\u4e2a\u6574\u6570\u7684\u9006\u5e8f\u6570\uff0c\u5728main\u4e2d\u8f93\u5165\u4e24\u4e2a\u6574\u6570\uff0c\u6c42\u5176\u9006\u5e8f\u6570\u4e4b\u548c\u5e76\u8f93\u51fa\u3002\u5982\u8f93\u516532 -71 \u8f93\u51fa6#include
int fun(int num);
void main( )
{
int x,y,sum;
sum=0;
printf("\u8bf7\u8f93\u5165\u4e24\u4e2a\u6574\u6570\uff1a");
scanf("%d%d",&x,&y);
sum=fun(x)+fun(y); %\u56e0\u4e3afun\uff08\uff09\u51fd\u6570\u6709\u8fd4\u56de\u503c\uff0c\u8fd9\u91cc\u76f8\u5f53\u4e8e\u5c06\u4e24\u4e2a\u8fd4\u56de\u503c\u76f8\u52a0
printf("sum=%d\n",sum);
}
int fun(int num)
{
int a,b; %\u5b9a\u4e49 a\uff0cb\u53d8\u91cf
a=0;
while (num!=0) %\u5224\u65ad\u5faa\u73af\u7684\u7ed3\u675f\u6761\u4ef6 \u6b64\u5904num\u4ee5\u4e24\u4f4d\u6570\u4e3a\u4f8b
{
b=num%10; %\u5bf910\u53d6\u4f59\uff0c\u5373\u6c42\u51fanum\u7684\u4e2a\u4f4d\u6570\u8d4b\u503c\u7ed9b
a=a*10+b;
num=num/10; %\u5c06num\u7684\u672b\u4f4d\u6570\u53bb\u6389
}
return a;
}
def r(a): count=0 for i in range(len(a)): for j in range(i): if a[i]<a[j]: count++ return counta=[9,5,2,4]print(r(a))
a，b都是一个数int（str（a）【：：-1】）+int（str（b）【：：-1】）
绛旓細int锛坰tr锛坅锛夈愶細锛-1銆戯級+int锛坰tr锛坆锛夈愶細锛-1銆戯級
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绛旓細print(input()[::-1])
