'commit'

C++课程/第十五课循环结构程序设计实例/test2.cpp

@@ -0,0 +1,20 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+int  NumberOf21(int n) {
+	int count = 0;
+	int k = 1;
+	while (n != 0) {
+		count++;
+		n = (n - 1) & n;
+	}
+	return count;
+}
+
+
+int main() {
+	cout<<NumberOf21(1365765670)<<endl;
+	return 0;
+}
+
+