15 条题解

  • 5
    @ 2023-1-31 17:02:43

    将三角形的每行拆开,找规律

    以样例为例子:

    第一行:两个空格一个*

    第二行:一个空格三个*

    第三行:零个空格五个*

    空格变化:2, 1, 0

    规律:从 n-1 往下递减1,直到0

    *号变化:1, 3, 5

    规律:从 1 往下递增2,加 n - 1 次(第一次是1)

    #include <iostream>
    #include <stack>
    #include <cmath>
    #include <vector>
    #include <string.h>
    #include <queue>
    #include <stdio.h>
    #include <iomanip>
    #include <cstdio>
    #include <algorithm>
    #define int long long
    using namespace std;
    const int N = 1e5 + 10;
    signed main()
    {
    	int n;
    	cin >> n;
    	for(int i = 1; i <= n; i++)
        {
            for(int j = 1; j <= n - i; j++)//求左边的空格数
            {
                cout << " ";
            }
            for(int j = 1; j <= 1 + (i - 1) * 2; j++)//求*数
            {
                cout << "*";
            }
            puts("");
        } 
    }
    
    • 1
      @ 2023-6-19 16:43:13
      #include <iostream>
      #include <stack>
      #include <cmath>
      #include <vector>
      #include <string.h>
      #include <queue>
      #include <stdio.h>
      #include <iomanip>
      #include <cstdio>
      #include <algorithm>
      #define int long long
      using namespace std;
      const int N = 1e5 + 10;
      signed main()
      {
      	int n;
      	cin >> n;
      	for(int i = 1; i <= n; i++)
          {
              for(int j = 1; j <= n - i; j++)
              {
                  cout << " ";
              }
              for(int j = 1; j <= 1 + (i - 1) * 2; j++)
              {
                  cout << "*";
              }
              cout << endl ; 
          } 
      }
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      ////////////////////////////////
      
      • 1
        @ 2023-4-12 19:40:49
        using namespace std;
        const int N = 1e5 + 10;
        int n;
        int main(){
        	cin >> n;
        	for ( int i = 1; i<= n; i++)
        	{
        		for ( int j=1 ; j <= n - i; j++)
        		{
        			cout << " ";
        			 
        		}
        		for ( int j=1 ; j <= 2*i-1; j++)
        		{
        			cout << "*";
        		}
        		cout << endl;
        	}
        	return 0;
        } 
        
        • 1
          @ 2023-3-19 18:43:02
          #include<bits/stdc++.h>;
           using namespace std;
           int n;
           int main() {
              
              cin>>n;
              for(int i=1;i<=n;i++){
              for(int j=1;j<=n+i-1;j++){
              if(n-i+1<=j&&n+i>=j)cout<<"*";
              else cout<<" ";
              }
              cout<<endl;
              }
          }
          
          • 1
            @ 2022-12-11 17:23:43

            #include<bits/stdc++.h>;

             using namespace std;
            
             int main() {
            
                int n;
            
                cin>>n;
            
                for(int i=1;i<=n;i++){
            
                for(int j=1;j<=n+i-1;j++){
            
                if(n-i+1<=j&&n+i>=j)cout<<"*";
            
                else cout<<" ";
            
                }
            
                cout<<endl;
            
                }
            
            }
            
            • 0
              @ 2024-11-18 22:16:21
              #include <bits/stdc++.h>
              using namespace std;
              int n,sum;
              int main()
              {
              	cin>>n;
              	for(int i=1;i<=n;i++){
              	for(int j=1;j<=n-i;j++)cout<<" ";
              	for(int j=1;j<=i+sum;j++){
              	cout<<"*";
              		}
              	sum++;
              	cout<<endl;
              	}
              	return 0;
              }
              
              • 0

                int a; cin>>a; for(int i=1;i<=a;i++){ for(int j=1;j<=a-i;j++){ cout<<" "; } for(int j=1;j<=1+(i-1)2;j++){ cout<<""; } cout<<endl; }

                
                
                • 0
                  @ 2023-12-24 17:58:31
                  #include <iostream>
                  #include <stack>
                  #include <cmath>
                  #include <vector>
                  #include <string.h>
                  #include <queue>
                  #include <stdio.h>
                  #include <iomanip>
                  #include <cstdio>
                  #include <algorithm>
                  #define int long long
                  using namespace std;
                  const int N = 1e5 + 10;
                  signed main()
                  {
                  	int n;
                  	cin >> n;
                  	for(int i = 1; i <= n; i++)
                      {
                          for(int j = 1; j <= n - i; j++)//求左边的空格数
                          {
                              cout << " ";
                          }
                          for(int j = 1; j <= 1 + (i - 1) * 2; j++)//求*数
                          {
                              cout << "*";
                          }
                          puts("");
                      } 
                  }
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  • 0
                    @ 2023-12-24 17:56:13
                    #include <iostream>
                    #include <stack>
                    #include <cmath>
                    #include <vector>
                    #include <string.h>
                    #include <queue>
                    #include <stdio.h>
                    #include <iomanip>
                    #include <cstdio>
                    #include <algorithm>
                    #define int long long
                    using namespace std;
                    const int N = 1e5 + 10;
                    signed main()
                    {
                    	int n;
                    	cin >> n;
                    	for(int i = 1; i <= n; i++)
                        {
                            for(int j = 1; j <= n - i; j++)//求左边的空格数
                            {
                                cout << " ";
                            }
                            for(int j = 1; j <= 1 + (i - 1) * 2; j++)//求*数
                            {
                                cout << "*";
                            }
                            puts("");
                        } 
                    }
                    
                    • 0
                      #include <iostream>
                      #include <bits/stdc++.h>
                      using namespace std;
                      const int N=1e7+10;
                      const int INF=0x3f3f3f3f;
                      int main()
                      {
                      	int a,bu;
                      	cin>>a;
                      	bu=2*a-1;
                      	int g=0,z=bu/2+1;
                      	for(int i=1;i<=a;i++) 
                      	{
                      		for(int j=1;j<=bu;j++)
                      		{
                      			if(j<=z+g && j>=z-g)
                      			{
                      				cout<<'*';
                      			}
                      			else
                      			{
                      				cout<<' ';
                      			}
                      		}
                      		cout<<endl;
                      		g++;
                      	}
                      	
                      }
                      
                      
                      • 0
                        @ 2023-4-12 19:42:25

                        #include<iostream> using namespace std; int n; int main(){

                        cin >> n;
                        for(int i = 1;i <= n;i++)
                        {  	
                        for(int j = 1;j <=  n - i;j++)
                        {
                        	cout << " ";
                        }
                        for(int j = 1;j <=  2*i - 1;j++)
                        {
                        	cout << "*";
                        }
                        cout << endl;
                        

                        }

                        return 0;
                        

                        }

                        • 0
                          @ 2023-4-12 19:37:06
                          #include <bits/stdc++.h>
                          using namespace std;
                          int n;
                          int main()
                          {
                          	cin>>n;
                          	for(int i=1;i<=n;i++)
                          	{
                          		for(int j=1;j<=n-i;j++)
                          		{
                          			cout<<" ";
                          		}
                          		for(int j=1;j<=2*i-1;j++)
                          		{
                          			cout<<"*";
                          		}
                          		cout<<endl;
                          	}
                          	
                          	return 0;
                          }
                          
                          • 0

                            #include<iostream>

                            #include<stdio.h>

                            #include<math.h>

                            #include<iomanip>

                            #include<string.h>

                            #include<algorithm>

                            using namespace std; int main() {

                            int n;
                            
                            cin>>n;
                            
                            for(int i=1;i<=n;i++)
                            {
                            	for(int j=1;j<=n+i-1;j++)
                            	{
                            	    if(n-i+1<=j&&n+i>=j)
                            
                            	
                            		 cout<<"*";
                            		 
                            	    else cout<<" ";
                            	}
                            	cout<<endl;
                            }
                            

                            }

                            • -1
                              @ 2023-7-9 9:58:18
                              #include<iostream>
                              using namespace std;
                              int n;
                              int main(){
                              	cin>>n;
                              	for(int i=1;i<=n;i++)
                              	{
                              		for(int j=1;j<=n-i;j++)
                              		{
                              			cout<<" ";
                              		}
                              	    for(int j=1;j<=i*2-1;j++)
                              	    {
                              	    	cout<<"*";
                              		}
                              	    cout<<endl; 
                              	}
                              	
                              	return 0;
                              }
                              
                              • -1
                                @ 2022-2-12 11:18:35

                                #include <iostream> #include <stdio.h> using namespace std; int main () { int n; cin >> n; for (int i = 1 ; i <= n ; i ++) { for (int j = 1 ; j <= n + i - 1 ; j ++) { if (n - i + 1 <= j && n + i >= j) cout << "*"; else cout << " "; } cout << endl; } }

                                • 1

                                信息

                                ID
                                954
                                时间
                                1000ms
                                内存
                                128MiB
                                难度
                                5
                                标签
                                递交数
                                687
                                已通过
                                288
                                上传者