#4. Write a Python program to get a string from a given string where all occurrences of its first char have been changed to '$', except the first char itself.
a='restart'
b=a[0]
a=a.replace('a','$')
c=b+a[1:]
print(c)

cfb1d7e6affc71d4af5a23e249355e25a0ea6ba6
<mask token>

<mask token>
print(c)

a = 'restart'
b = a[0]
a = a.replace('a', '$')
c = b + a[1:]
print(c)

#4. Write a Python program to get a string from a given string where all occurrences of its first char have been changed to '$', except the first char itself.
a='restart'
b=a[0]
a=a.replace('a','$')
c=b+a[1:]
print(c)
