LOOP STATEMENTS
===============
LOOP ==> AN ITERATION
WHEN A BLOCK OF CODE CAN EXECUTE FOR SEVERAL NUMBER OF TIMES BASED ON THE CERTAIN CONDITION ==> A LOOP
THERE ARE TWO TYPES OF LOOP STATEMENTS:
	1) WHILE LOOP
	2) FOR LOOP

1) WHILE LOOP:
==============
NEED THREE THINGS TO WORK:
	INITIALIZATION	==> LOOP START POINT
	CONDITION	==> UNTIL WHICH POINT THE LOOP NEED TO CONTINUE
	UPDATE		==> INITIALIZATION, THE LOOP NEED TO UPDATE TO THE NEXT TILL THE LAST

EX: MY LOOP NEED TO EXECUTE FOR 5-TIMES:
	LOOP-1;LOOP-2;LOOP-3;LOOP-4;LOOP-5

SYNTAX:
	Initialization
	while condition:
		statement-1
		statement-2
		update
	statement

ex: print hello world for 5 times
hello world
hello world
hello world
hello world
hello world

line = 1	# initialization
while line <= 5:	# condition
	print("Hello World!")
	line += 1	# line = line + 1
print("End of the loop")

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

# WAP IN PYTHON TO PRINT NUMBERS FROM 1 TO 10 USING WHILE LOOP.

"""
1   2   3   4   5   6   7   8   9   10

or

1
2
3
4
5
6
7
8
9
10

to computer:
initialization: num = 1
condition: num <= 10
update: num = num + 1
"""

num = 1

while num <= 10:
    print(num,end = '\t')
    num = num + 1
print()
print("Program is complete.")

# WAP TO PRINT ALL MULTIPLES OF 5 FROM 100 TO 0 USING WHILE LOOP.

"""
5, 10, 15, 20, 25, .... 100

initialization : number = 100
condition: number >= 0
    if number % 5 == 0 ==> print(number)
    number -= 1
"""

number = 100

while number > 0:
    if number % 5 == 0:
        print(number,end = "\t")
    number = number - 1

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

# WAP TO COUNT THE NUMBER OF DIGITS IN A GIVEN NUMBER.

"""
1234 ==> 4-digit
1 ==> 1-digit
12345 ==> 5-digit

while performing any operations on numbers like: counting digits, sum of digits etc.
    number ==> positive or not equals to 0

number sequence:
    xyz ==> x X 100 + y X 10 + z X 1 ==> x X 10^2 + y X 10^1 + z X 10^0
    from xyz ==> individual digits like: x, y, z : floor division with 10
    while split the number, we should count the digits
"""

number = int(input("Enter the positive number:"))   # 12345

num = number    # num = 12345  1234
count = 0

while num > 0:
    num = num // 10 # 1234  123 12  1   0
    count = count + 1   # 1 2   3   4   5
print("The given number is {} with {} digits".format(number,count))

============================
len()
====
used to find the size of the collection (string, list, tuple, set, dictionary etc.)
Syntax:
	len(colletion data)
here:
	len() can return an integer, which defines the length or the size or the number of elements in a collection.

number = int(input("Enter the positive number:"))   # 12345

num = str(number)

count = len(num)

print("The given number is {} with {} digits".format(number,count))


ASSIGNMENT:
===========
1) WAP TO FIND THE SUM OF INDIVIDUAL DIGITS OF A NUMBER
EX: 12345 ==> 1 + 2 + 3 + 4 + 5 ==> 15

2) WAP TO FIND THE REVERSE OF THE NUMBER.
EX: 12345 ==> 54321