Using Back Track Algorithm:
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#include <iostream> #include <cstring> #include <cstdio> #include <string> #include <algorithm> using namespace std; int N,H; int backtrack(int idx,int cnt,int a[20]) { if(cnt==N-H) { for(int i=1;i<=N;i++) cout<<a[i]; cout<<"\n"; return 0; } for(int i=idx;i<=N;i++) { a[i]=0; backtrack(i+1,cnt+1,a); a[i]=1; } return 0; } int main() { int t; string s; cin>>t; getchar(); getline(cin,s); int str[20]; while(t--) { cin>>N; getchar(); cin>>H; getchar(); getline(cin,s); for(int i=0;i<20;i++) str[i]=1; backtrack(1,0,str); if(t) cout<<"\n"; } return 0; } |
Using Next_permutation() method in C++
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#include <iostream> #include <cstring> #include <cstdio> #include <string> #include <algorithm> using namespace std; int N,H; int main() { int t; string s; cin>>t; getchar(); getline(cin,s); int str[20]; while(t--) { cin>>N; getchar(); cin>>H; getchar(); getline(cin,s); for(int i=0;i<N-H;i++) str[i]=0; for(int i=N-H;i<N;i++) str[i]=1; do{ for(int i=0;i<N;i++) cout<<str[i]; cout<<"\n"; } while(next_permutation(str,str+N)); if(t) cout<<"\n"; } return 0; } |