# File: ChapterStrings/stringfunctions.py 
# Python:  L.count(x), L.find(x), L.replace('old', 'new')
"""
a al la an n   t tu ur ri in ng ga al la an n   t tu ur ri in ng g
The number of occurences of u is:  1
Find first position of a: 0
Delete letter a:  ln turing
Replace a with X:  XlXn turing
"""
def main():
    S = "alan turing"     # S global variable
    n = len(S)              # length of the string
    for i in range(n):      # print letters twice
        print(S[i],S[i],end="")
    for c in S:             # same
        print(c,c,end="")
    print("\nThe number of occurences of u is: ",  S.count('u'))
    print("Find first position of a:", S.find('a'))
    print("Delete letter a: ", S.replace('a', ''))  # deletes ALL occurrences
    print("Replace a with X: ", S.replace('a', 'X'))

main()