PS

Author: bisakhmondal

Solutions/is_perfect_square.cpp

@@ -0,0 +1,20 @@
+    bool isPerfectSquare(int num) {
+        
+        double lo=0,hi=num;
+        while(lo<=hi){
+            double mid=(int)(lo+(hi-lo)/2);
+            // cout<<mid<<endl;
+            try{
+            if(mid*mid==num){
+                return true;
+            }
+            if(mid*mid>num)
+                hi=mid-1;
+            else lo=mid+1;
+            }
+            catch(...){
+                hi=mid-1;
+            }
+        }
+        return false;
+    }