STRING OPERATIONS
===================
Traversing of string data:
===================

# WAP IN PYTHON TO PRINT THE INDIVIDUAL CHARACTERS OF THE STRING ALONG WITH ITS POSITIVE AND NEGATIVE INDEX VALUE.

"""
EXPECTED OUTPUT:
    THE CHARACTER AT POSITIVE INDEX IS = CHARACTER_VALUE AND CT NEGATIVE INDEX IS = CHARACTER VALUE
"""

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

pindex = 0
nindex = -len(str_data)

for i in str_data:
    # print("The Character at positive index",pindex," and at negative index",nindex,"is = ",i)
    print("The Character at positive index {} and at negative index {} is = {}".format(pindex,nindex,i))
    pindex += 1
    nindex += 1

STRING LENGTH:
===============
len()

# WAP IN PYTHON TO FIND THE LENGTH OF THE STRING WITHOUT ANY INBUILT METHOD

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

str_length = 0

for count in str_data:
    str_length += 1

print("The Length of the given string = ",str_length)
print("The Length of the given string = ",len(str_data))

i = 0
str_len = 0

while i < len(str_data):
    str_len += 1
    i += 1
print(str_len)

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

MATH OPERATIONS
=================
1) STRING CONCATENATION ==> +
=============================
==> JOINING OF TWO OR MORE COLLECTIONS (STRINGS) INTO ONE IS CALLED AS "STRING CONCATENATION".
Syntax:
	str_data1 + str_data2 + str_data3 + .....

str_data1 = "Python "
str_data2 = "is Object Oriented "
str_data3 = "Programming Language."


print(len(str_data1))
print(len(str_data2))
print(len(str_data3))

print(id(str_data1))
print(id(str_data2))
print(id(str_data3))

print(str_data1)
print(str_data2)
print(str_data3)

# str_data1 = str_data1 + str_data2 + str_data3
str_data4 = str_data1 + str_data2 + str_data3

print(id(str_data1))
print(id(str_data2))
print(id(str_data3))
print(id(str_data4))

print(str_data1)
print(str_data2)
print(str_data3)
print(str_data4)

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

2) STRING REPITITION ==> *
========================
==> used to repeat the string data for several number of times.
'abc' * 3 ==> 'abcabcabc'
'abcd' * 5 ==> 'abcdabcdabcdabcdabcd'
Syntax:
	str_data * num_times

str_data = input("Enter a String Data:")

print(id(str_data))
print(str_data)


# str_data = str_data * 5
str_data1 = str_data * 5

print(id(str_data1))
print(str_data1)


Note:
====
==> string is immutable type
	for any operation, there will be the new object address.

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

MEMBERSHIP CHECK ON STRING DATA:
=================================
in
not in

str_data = "Python Programming Language"

res1 = 'Pro' in str_data    # True
res2 = 'programming' not in str_data    # True

res3 = 'pro' in str_data
res4 = 'Programming' not in str_data

print(res1)
print(res2)
print(res3)
print(res4)

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

STRING COMPARISION
===================
POSSIBLE WITH: RELATIONAL OPERATORS
<, >, <=, >=, ==, !=

== & !=

str1 = "PyThon "    # 7
str2 = "python"     # 6
str3 = "PYTHON"     # 6
str4 = "Python "    # 7
str5 = "Pyth"

print(str1 == str2)
print(str1 == str3)
print(str1 == str4)

print(str1 != str5)

"""
Any Relational operators on the string:
    1) check with length first
    2) checking with individual characters of both strings wrt to ASCII value.
"""

print('pytho' > 'python')