'commit'

TangDou/AcWing/HighPrecision/Test.cpp

@@ -0,0 +1,27 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main() {
+    // cout << 512 + 256 + 128 + 64 + 32 + 8 << endl;
+
+    int n = 100;
+    int cnt = 0;
+    for (int i = 31; i >= 0; i--)
+        if (n >> i & 1) cnt++;
+    cout << cnt << endl;
+
+    int x = 100;
+    cnt = 0;
+    while (x) {
+        x = x & (x - 1);
+        cnt++;
+    }
+    cout << cnt << endl;
+
+    // 判断一个数字是不是2的整数次方
+    int n = 100;
+    if (n & (n - 1))
+        cout << "NO" << endl;
+    else
+        cout << "YES" << endl;
+    return 0;
+}