342

Author: Ashish-kumar7

231.cpp

@@ -0,0 +1,19 @@
+class Solution {
+public:
+    bool isPowerOfTwo(int n) {
+        
+        if(n<=0)
+        {
+            return 0;
+        }
+        int y=n-1;
+        int z= y & n;
+        if(z==0)
+        {
+            return 1;
+        }
+        return 0;
+        
+        
+    }
+};

342.cpp

@@ -0,0 +1,17 @@
+class Solution {
+public:
+    bool isPowerOfFour(int num) {
+        
+        
+        float yy=(log10 (num)/log10 (4));
+     
+        if(yy == (int)yy)
+        {
+            return 1;
+        }
+        else 
+        {
+            return 0;
+        }
+    }
+};