non repeating
#take user input
String = input('Enter the string :')
for i in String:
#initialize a count variable
count = 0
for j in String:
#check for repeated characters
if i == j:
count+=1
#if character is found more than 1 time
#brerak the loop
if count > 1:
break
#print for nonrepeating characters
if count == 1:
print(i,end = " ")