递归:
#include <iostream> #include <cstdlib> #include <cstdio> using namespace std; int que[8]={0},cc=0; void print() { cc++; cout<<cc<<‘:‘; for(int i=0;i<=7;i++) cout<<que[i]<<‘ ‘; cout<<endl; } int check(int c) { if(que[c]>8)return 0; for(int i=0;i<c;i++) { if(que[i]==que[c]||que[i]-que[c]==i-c||que[i]-que[c]==c-i)return 0; } return 1; } void queue8(int i) { if(i==8){print();return;} for(int j=1;j<=8;j++) { que[i]=j; if(check(i))queue8(i+1); } } int main() { queue8(0); }
迭代:
#include <iostream> #include <cstdlib> #include <cstdio> using namespace std; int que[8]={0},c,count; void print() { c++; cout<<c<<‘:‘; for(int i=0;i<=7;i++) cout<<que[i]<<‘ ‘; cout<<endl; } int check(int c) { if(que[c]>8)return 0; for(int i=0;i<c;i++) { if(que[i]==que[c]||que[i]-que[c]==i-c||que[i]-que[c]==c-i)return 0; } return 1; } void queue8() { int cc=0; while(count>=0&&count<=7) { que[count]++; if(check(count)) { count++; } else if(que[count]>8)que[count]=0,count--; if(count>7){print();count--;} } } int main() { queue8(); }
时间: 2024-11-13 09:44:07