資工趴趴熊的小天地

題目一

輸入說明
一個整數n。

輸出說明
n的質因數分解，用空格隔開因數。

input
120
output
2 2 2 3 5

C++

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int i = 2;
    while( n > 1 )
    {
        while( n%i == 0 )
        {
            cout << i << " ";
            n = n/i;
        }
        i+=1;
    }
    cout <<"\n";
    return 0;
}

python:

n=int(input())
i=2
while n>1 :
    while n%i==0:
        print(i,end=" ")
        n//=i;
    i+=1 

題目二:

input
120
output
120 = 2^3 * 3^1 * 5^1

C++:

#include <iostream>
using namespace std;
int main()
{
    int n;
    int acc;
    cin >> n;//120 輸入n 
    int m=n; //m為保留原本的質 
    cout<<m<<" = ";
    int i = 2;
    while( n > 1 )
    {
    	acc=0;
    	bool flag=true;
        while( n%i == 0 )
        {
        	if(flag==true){
        		cout << i << " * ";
				flag=false;	
			}			
        	acc+=1;
            n = n/i;
        }
        if(flag==false){
	        cout<<acc<<" ";
	        if(n>1)cout<<"+ ";
		}
        flag=true;
        i+=1;
    }
    return 0;
}

python:

n=int(input())
print(n,end=" = ")
i=2
while n>1:
    acc=0
    flag=True
    while n%i==0:
        if flag==True:
            print(i,end=" * ")
            flag=False
        acc+=1
        n//=i
    if flag==False:
        print(acc,end=" ")
        if n>1:print("+ ",end="")
    flag=True
    i+=1