'commit'

C++课程/第十一课分支结构程序设计/CountBitSample.cpp

@@ -0,0 +1,51 @@
+#include<iostream>
+using namespace std;
+
+//<2F><><EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD>һ<EFBFBD><D2BB>ʮ<EFBFBD><CAAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+void bin2(int n) {
+	int i,j=0;
+	int a[1000];
+	i=n;
+	if(i==0) {
+		cout<<"0"<<endl;
+	}
+	while(i) {
+		a[j]=i%2;
+		i/=2;
+		j++;
+	}
+	for(i=j-1; i>=0; i--)
+		cout<<a[i];
+	cout<<endl;
+}
+
+
+//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD>
+int CountBit(int x) {
+	int ret=0;
+	while(x) {
+		//<2F><><EFBFBD><EFBFBD>ʮ<EFBFBD><CAAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+		cout<<"x=		";
+		bin2(x);
+		cout<<"x-1=		";
+		bin2(x-1);
+		cout<<"x&(x-1)=	";
+
+		bin2(x&(x-1));
+
+		cout<<endl;
+
+		ret++;
+		x=x&(x-1);
+	}
+	return ret;
+}
+
+
+int main() {
+	//<2F>ж<EFBFBD><D0B6>ٸ<EFBFBD>1<EFBFBD><31>
+	cout<<CountBit(63)<<endl;
+	return 0;
+}
+
+