More programs added.

Author: musamairshad

36. Write a program to check whether a given number is prime or not.py

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+"""
+Description:
+The prime numbers are basically those numbers which are always divisible by 1 and itself.
+divisible means reminder = 0.
+like 13, 13 is divisible by 1 and 13 itself so it is prime because it was divisible by exactly two
+no's but if we enter a number which was divisible from more than 2 numbers then it was a composite number
+like 2,4,6 etc they are composite numbers.
+"""
+
+no = int(input('Enter Number to check whether it is prime or not: '))
+count = 0
+i = 1
+while i <= no:
+    if no % i == 0:
+        count += 1
+    i += 1
+if count == 2:
+    print('The Number is prime.')
+else:
+    print('The Number is a composite number.')

37. Write a program to print factorial of a given number.py

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+"""
+Description:
+factorial is a concept in mathematics it is basically like if we say find factorial of 5 then
+5 x 4 x 3 x 2 x 1 = 120, so 120 is the factorial of 5.
+"""
+
+no = int(input('Enter Number to find its factorial: '))
+originalNo = no
+factorial = 1
+while no > 0:
+    factorial = factorial * no
+    no -= 1
+print('Factorial of',originalNo,'is =',factorial)

38. Write a program to print fibonacci series upto a given number.py

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+"""
+Description:
+Fibonacci Series is a concept in mathematics like it is the series in which the elements are like:
+0 1 1 2 3 5 8 13 and so on.
+In this series it is shown that:
+0 + 1 = 1
+and 1 + 1(previous number) = 2
+2 + 1(previous number) = 3
+3 + 2(previous number) = 5
+5 + 3(previous number) = 8
+8 + 5(previous number) = 13
+and the series goes on like this...
+"""
+
+no = int(input('Enter Number upto which you want to print fibonacci series: '))
+x = 0
+y = 1
+z = 0
+while z <= no:
+    print(z, end=" ")
+    x = y
+    y = z
+    z = x + y

39. Write a program to print right angle triangle star pattern using while loop.py

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+"""
+Description:
+In this program nested loop concept is used.
+"""
+
+i = 1
+while i <= 5:
+    j = 1
+    while j <= i:
+        print('*', end=" ")
+        j += 1
+    print()
+    i += 1

40. Write a program to print reverse right angle triangle star pattern using while loop.py

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+"""
+Description:
+Same like program#39
+"""
+
+i = 1
+while i <= 5:
+    j = 5
+    while j >= i:
+        print('*', end=" ")
+        j -= 1
+    print()
+    i += 1

41. Write a program to print left angle triangle star pattern using while loop.py

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+"""
+Same like program # 39
+"""
+
+i = 1
+while i <= 5: # This loop will count the number of row's.
+    space = 1
+    while space <= 5 - i: # This loop will print the blank spaces.
+        print(' ', end=' ')
+        space = space + 1
+    j = 1
+    while j <= i: # This loop will print stars.
+        print('*', end=' ')
+        j = j + 1
+    print()
+    i = i + 1

42. Write a program to print reverse left angle triangle star pattern using while loop.py

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+'''
+Description:
+Same like program # 42.
+'''
+
+i = 1
+while i <= 5:
+    space = 1
+    while space < i:
+        print(' ', end=' ')
+        space += 1
+    j = 5
+    while j >= i:
+        print('*', end=' ')
+        j -= 1
+    print()
+    i += 1

43. Write a program to print Pyramid shape star pattern using while loop.py

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+'''
+Description:
+Same like program # 39
+'''
+
+k = 1
+i = 1
+while i <= 5:
+    space = 1
+    while space <= 5 - i:
+        print(' ', end=' ')
+        space += 1
+    j = 1
+    while j <= k:
+        print('*', end=' ')
+        j += 1
+    k += 2
+    print()
+    i += 1

44. Write a program to print reverse Pyramid shape star pattern using while loop.py

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+'''
+Description:
+Same like program # 39
+'''
+
+n = int(input('Enter number of rows: '))
+i = 1
+while n > 0:
+    space = 1
+    while space < i:
+        print(' ', end=' ')
+        space += 1
+    j = 1
+    while j <= ((n * 2) - 1):
+        print('*', end=' ')
+        j += 1
+    print()
+    n -= 1
+    i += 1

Left Angle Triangle Patterns.py

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+"""
+First Pattern:
+        *
+      * *
+    * * *
+  * * * *
+* * * * *
+
+i = 1
+while i <= 5:
+    space = 4
+    while space >= i:
+        print(' ', end=' ')
+        space -= 1
+    j = 1
+    while j <= i:
+        print('*', end=' ')
+        j += 1
+    print()
+    i += 1
+"""
+
+
+"""
+Second Pattern:
+* * * * *
+  * * * *
+    * * *
+      * *
+        *
+
+i = 1
+while i <= 5:
+    space = 1
+    while space < i:
+        print(' ', end=' ')
+        space += 1
+    j = 5
+    while j >= i:
+        print('*', end=' ')
+        j = j - 1
+    print()
+    i = i + 1
+"""
+
+
+"""
+Third Pattern:
+        1
+      2 2
+    3 3 3
+  4 4 4 4
+5 5 5 5 5
+
+i = 1
+while i <= 5:
+    space = 4
+    while space >= i:
+        print(' ', end=' ')
+        space -= 1
+    j = 1
+    while j <= i:
+        print(i, end=' ')
+        j += 1
+    print()
+    i += 1
+"""
+
+
+"""
+Fourth Pattern:
+        1
+      2 1
+    3 2 1
+  4 3 2 1
+5 4 3 2 1
+
+i = 1
+while i <= 5:
+  space = 4
+  while space >= i:
+    print(' ', end=' ')
+    space -= 1
+  j = 1
+  while j <= i:
+    print(j, end=' ')
+    j += 1
+  print()
+  i += 1
+"""

Pyramid Triangle Patterns.py

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+'''
+To be added...
+'''

Right Angle Triangle Patterns.py

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+"""
+First Pattern:
+*
+* *
+* * *
+* * * *
+* * * * *
+
+i = 1
+while i <= 5:
+    j = 1
+    while j <= i:
+        print('*', end=" ")
+        j += 1
+    print()
+    i += 1
+"""
+
+"""
+
+Second Pattern:
+* * * * *
+* * * *
+* * *
+* *
+*
+
+i = 1
+while i <= 5:
+    j = 5
+    while j >= i:
+        print('*', end=" ")
+        j -= 1
+    print()
+    i += 1
+"""
+
+"""
+Third Pattern:
+1
+2 2
+3 3 3
+4 4 4 4
+5 5 5 5 5
+
+i = 1
+while i <= 5:
+    j = 1
+    while j <= i:
+        print(i, end=" ")
+        j += 1
+    print()
+    i += 1
+"""
+
+"""
+
+Fourth Pattern:
+1
+1 2
+1 2 3
+1 2 3 4
+1 2 3 4 5
+
+i = 1
+while i <= 5:
+    j = 1
+    while j <= i:
+        print(j, end=" ")
+        j += 1
+    print()
+    i += 1
+"""
+