New Python file added to check for Duplicates

Created by: vineetnayak777

dup.py

+print("Enter N")
+n=int(input())
+flag=0
+flag1=0
+num=[]
+for i in range(n):
+    num.append(int(input()))
+dic={}
+for i in num:
+    try:
+        dic[i]+=1
+    except:
+        dic[i]=1
+
+for key, value in dic.items():
+    if(value!=1):
+        if(flag==0):
+            print("Duplicate Numbers")
+            flag=flag+1
+        print(key)
+    else:
+        if(flag1==0):
+            print("Non Duplicate Numbers")
+            flag1=flag1+1
+        print(key)