Replace the Characters within a string.
Let’s say you are asked to create a string from the given input wherein you need to replace the occurences of first character from the input word. e.g. Input: Advanced — output: Adv#nced
# APPROACH 1:
string=input()
res = ''
chr=string[0]
count=0
for i in string:
if i==chr:
count+=1
if count>1:
i="#"
res+=i
else:
res+=i
else:
res+=i
print(res)