'commit'

C++课程/第十二课二进制进阶与多重循环/最大公约数.cpp

@@ -0,0 +1,39 @@
+#include<iostream>
+using namespace std;
+
+//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
+int gcd(int a,int b)
+{
+	int ans=a>b? b:a;
+	while(ans>1&&(a%ans!=0||b%ans!=0)) 
+	{
+		ans--;
+	}
+	return ans;
+}
+
+//շת<D5B7><D7AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
+//<2F><><EFBFBD><EFBFBD>a>b,<2C><><EFBFBD><EFBFBD>a<EFBFBD><61><EFBFBD>ܱ<EFBFBD>b<EFBFBD><62><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>b<EFBFBD><62>ֵ<EFBFBD><D6B5>a<EFBFBD><61><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>b<EFBFBD><62><EFBFBD>ظ<EFBFBD>ִ<EFBFBD><D6B4>a%b,ֱ<><D6B1>a<EFBFBD>ܹ<EFBFBD><DCB9><EFBFBD>b<EFBFBD><62><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>b<EFBFBD><62>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD>
+int gcd2(int a,int b)
+{	int c;
+	if(a<b)
+	{	a=a+b;
+		b=a-b;
+		a=a-b;
+	}
+	c=a%b;
+	while(a%b!=0)
+	{	a=b;
+		b=c;
+		c=a%b;	
+	}
+	return b;
+}
+
+int main() {
+	int a,b;
+	cin>>a>>b;
+	cout<<gcd(a,b)<<endl;
+	cout<<gcd2(a,b)<<endl;
+	return 0;
+}