String Practice:
================

# Practice with strings

# WAP IN PYTHON TO ACCEPT A STRING AND PRINT THE STRING REVERSE.

def reverseString(string):
    # reverseString = string[::-1]
    length = len(string)

    index = length - 1

    reverseString = ""
    while index >= 0:
        reverseString = reverseString + string[index]
        index -= 1
    return reverseString

strData = input("Enter a string:")
output = reverseString(strData)

print("The string after the reverse = ",output)

=============================================

# WAP TO TAKE A STRING AS AN INPUT AND PRINT THE STRING WITH REVERSE OF WORDS.
"""
IP = "PYTHON PROGRAMMING LANGUAGE"
OP = "LANGUAGE PROGRAMMING PYTHON

1) take an input of string
2) string ==> list, split()
3) reverse of the list data.
4) list ==> string, join()
5) Print that reverse string
"""

s = input("Enter a string data:")

ld = s.split()  # converting a string into list
rev_list = ld[::-1] # list content can be reversed
result = ' '.join(rev_list)

print("The STring with reverse ordered words = ",result)

========================================================

# WAP IN PYTHON TO ACCEPT A STRING AND PRINT THE STRING WITH REVERSE OF THE INTERNAL CONTENT OF EACH WORD.

"""
IP : PYTHON PROGRAMMING LANGUAGE
ld = [python, programming, language]
OP : NOHTYP GNIMMARGORP EGAUGNAL

1) TAKE THE STRING ASN AN INPUT
2) STRING ==> LIST, split()
3) APPLY LOGIC FOR REVERSE OF EACH WORD/ELEMENT ON THE LIST
4) JOIN THE LIST TO STRING
5) PRINT THAT STRING
"""

s = input("Enter a string:")

ld = s.split()  # string to the list

# print("The List after the split operation is = ",ld)

res_list = []

index = 0

while index < len(ld):
    res_list.append(ld[index][::-1])
    index += 1

# print(res_list)

res_string = ' '.join(res_list)

print(res_string)

======================================

# WAP TO PRINT CHARACTERS AT EVEN POSITIONS AND AT ODD POSITIONS.

s = input("Enter the string:")

print("The Characters at Even Places are:",s[0::2])
print("The Characters at Odd Places are:",s[1::2])

================================

s = input("Enter the string:")

# print("The Characters at Even Places are:",s[0::2])
# print("The Characters at Odd Places are:",s[1::2])

index = 0

s_even = ""
s_odd = ""

while index < len(s):
    if index % 2 == 0:
        s_even = s_even + s[index]
    else:
        s_odd = s_odd + s[index]
    index += 1

print("The Characters at Even place = ",s_even)
print("The Characters at Odd place = ",s_odd)

=======================================

# WAP TO MERGE CHARACTERS OF 2 STRINGS INTO A SINGLE STRING BY TAKING CHARACTERS ALTERNATIVELY.

"""
S1 = "PYTHON"
S2 = "PROGRAM"

OP = PPYRTOHGORNAM"

1. define two strings with same length
2. traversing on string for merging the content
"""

s1 = input("Enter a string1:")
s2 = input("Enter a string2:")

result = ""

i,j = 0,0

while i < len(s1) or j < len(s2):
    if i < len(s1):
        result = result + s1[i]
        i += 1
    if j < len(s2):
        result = result + s2[j]
        j += 1

print("The String after the merge = ",result)