Find a Fibonacci series:
Generate the Fibonacci sequence up to a given number.
Example: Input: 10 → Output: 0, 1, 1, 2, 3, 5, 8.
f, s = -1, 1
t = 0
while t<=13:
t= f + s
print(t,end= ' ')
f,s = s, t
0 1 1 2 3 5 8 13 21
Find a Fibonacci series without using third variable:
f, s = -1, 1
while f+s<=13:
print(f + s,end= ' ')
f,s = s, f + s
0 1 1 2 3 5 8 13
for loop:
A for loop is a control flow statement used in programming to repeat a block of code a specific number of times or to iterate over a sequence.
Syntax:
for variable in iterable:
Step operator:
A step operator refers to the ability to specify an increment (or step) for iteration in loops. In Python, this is often used with the range() function, which allows specifying a step to control how the loop variable changes after each iteration.
Syntax:
range(start, stop, step)
start: The starting value of the sequence (inclusive).
stop: The stopping value of the sequence (exclusive).
step: The amount by which the sequence increases (or decreases, if negative) in each iteration.
print("First Output")
for no in range(10):
print(no, end=' ')
print("\nSecond Output")
for no in range(1,10):
print(no, end=' ')
print("\nThird Output")
for no in range(5,10):
print(no, end=' ')
print("\nFourth Output")
for no in range(1,10,2):
print(no, end=' ')
print("\nFifth Output")
for no in range(3,15,3):
print(no, end=' ')
print("\nSixth Output")
for no in range(10,1):
print(no, end=' ')
print("\nSeventh Output")
for no in range(10,1,-1):
print(no, end=' ')
print("\nEighth Output")
for no in range(20,3,-1):
print(no, end=' ')
print("\nNineth Output")
for no in range(20,2,-2):
print(no, end=' ')
First Output
0 1 2 3 4 5 6 7 8 9
Second Output
1 2 3 4 5 6 7 8 9
Third Output
5 6 7 8 9
Fourth Output
1 3 5 7 9
Fifth Output
3 6 9 12
Sixth Output
Seventh Output
10 9 8 7 6 5 4 3 2
Eighth Output
20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4
Nineth Output
20 18 16 14 12 10 8 6 4
Indexing:
Indexing refers to accessing elements in a sequence (like a list, tuple, or string) using their position, or index.
Types of Indexing:
1.Positive Indexing:
Starts from 0 for the first element.
2.Negative indexing:
Starts from -1 for the last element.
name = 'ABCDEFGHI'
print("First output")
for letter in name[0:5]:
print(letter, end=' ')
print("\nSecond output")
for letter in name[0:6:2]:
print(letter, end=' ')
print("\nThird output")
for letter in name[8:0:-1]:
print(letter, end=' ')
print("\nFourth output")
for letter in name[8:2:-1]:
print(letter, end=' ')
print("\nFifth output")
for letter in name[8:-1:-1]:
print(letter, end=' ')
print("\nSixth output")
for letter in name[8:3:-2]:
print(letter, end=' ')
print("\nSeventh output")
for letter in name[8::-1]:
print(letter, end=' ')
print("\nNinth output")
for letter in name[::]:
print(letter, end=' ')
print("\nTenth output")
for letter in name[6::]:
print(letter, end=' ')
print("\nEleventh output")
for letter in name[2::2]:
print(letter, end=' ')
First output
A B C D E
Second output
A C E
Third output
I H G F E D C B
Fourth output
I H G F E D
Fifth output
Sixth output
I G E
Seventh output
I H G F E D C B A
Ninth output
A B C D E F G H I
Tenth output
G H I
Eleventh output
C E G I
name = 'ABCDEFGHI'
print(name[0])
print(name[-1])
print(name[-2])
print(name[-3])
print(name[-1::-1])
A
I
H
G
IHGFEDCBA
Write a program to check the given string is palindrome or not
name = input("Enter word: ")
if name[::] == name[::-1]:
print("Palindrome")
else:
print("Not Palindrome")
Enter word: amma
Palindrome
Enter word: ggfhyjdr
Not Palindrome
name = 'abcd'
print(name * 3)
abcdabcdabcd
name = 'abcd'
print(name + 3)
TypeError: can only concatenate str (not "int") to str
This error occurs because you're trying to concatenate a string (name) with an integer (3) using the + operator. In Python, the + operator for strings is used for concatenation, but both operands must be strings.
for num in range(5):
print("* " * num)
*
* *
* * *
* * * *
for num in range(1,6):
print("* " * num)
*
* *
* * *
* * * *
* * * * *
for num in range(5,0,-1):
print("* " * num)
* * * * *
* * * *
* * *
* *
*
digit = "1"
for num in range(5,0,-1):
print(digit * num)
digit = str(int(digit)+1)
11111
2222
333
44
5
Task:
ABCDEFGHI
XYZ
ZYXWV
ACEGI
IGECA
ZXVTRPNLJHFDB
word = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
print("First Output")
for letter in word[0:9]:
print(letter , end=" ")
print("\nSecond Output")
for letter in word[23::]:
print(letter , end=" ")
print("\nThird Output")
for letter in word[-1:-6:-1]:
print(letter , end=" ")
print("\nFouth Output")
for letter in word[0:9:2]:
print(letter , end=" ")
print("\nFifth Output")
for letter in word[8::-2]:
print(letter , end=" ")
print("\nSixth Output")
for letter in word[-1::-2]:
print(letter , end=" ")
First Output
A B C D E F G H I
Second Output
X Y Z
Third Output
Z Y X W V
Fouth Output
A C E G I
Fifth Output
I G E C A
Sixth Output
Z X V T R P N L J H F D B
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