求助帖

#include <stdio.h>
int func(int num){
int maxArr[4]={0,0,0,0},minArr[4]={0,0,0,0};
int i,j,k=4;
int temp;
//数字拆分存放
while(k--){
maxArr[k]=num%10;
minArr[k]=maxArr[k];
num/=10;
}
//排序获得最大、最小值
for(i=0;i<4;i++){
for(j=i+1;j<4;j++){
if(maxArr[i]<maxArr[j]){
temp = maxArr[i];
maxArr[i] = maxArr[j];
maxArr[j] = temp;
}
if(minArr[i]>minArr[j]){
temp = minArr[i];
minArr[i] = minArr[j];
minArr[j] = temp;
}
}
}
//相减
for(i=1;i<4;i++){
maxArr[0] = maxArr[0] * 10 + maxArr[i];
minArr[0] = minArr[0] * 10 + minArr[i];
}
return maxArr[0]-minArr[0];
}
int main()
{
int num = 4312;
int maxCount = 10;
while(maxCount){
num = func(num);
printf("%d\n",num);
if(num==6174){
break;
}
maxCount--;
}
return 0;
}