21 Days Programming Solutions

Software/MyRepoPy/Day1.py

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+import math
+a = float(input("Enter the coefficient a: "))
+b = float(input("Enter the coefficient b: "))
+c = float(input("Enter the coefficient c: "))
+print("The quadratic equation is: {}X2 + {}X + {} = 0".format(a,b,c))
+d = b**2 - 4*a*c
+print('The value of d is: ',d)
+if d>0:
+
+    r1 = (-b + math.sqrt(d))/(2 * a)
+    r2 = (-b - math.sqrt(d))/(2 * a)
+    print("Roots are real and unequal ",r1,r2)
+elif d==0:
+
+    r1 = -b/(2*a)
+    print("Roots are real and same ",r1)
+else:
+
+    A = (-b/(2*a)) 
+    s = (4*a*c - b**2)      
+    B = (math.sqrt(s))/(2 * a)
+
+    print("Roots are complex and imaginary {} + {}i  and {} - {}i".format(A,B,A,B))
+

Software/MyRepoPy/Day1.txt

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+import math
+a = float(input("Enter the coefficient a: "))
+b = float(input("Enter the coefficient b: "))
+c = float(input("Enter the coefficient c: "))
+print("The quadratic equation is: {}X2 + {}X + {} = 0".format(a,b,c))
+d = b**2 - 4*a*c
+print('The value of d is: ',d)
+if d>0:
+
+    r1 = (-b + math.sqrt(d))/(2 * a)
+    r2 = (-b - math.sqrt(d))/(2 * a)
+    print("Roots are real and unequal ",r1,r2)
+elif d==0:
+
+    r1 = -b/(2*a)
+    print("Roots are real and same ",r1)
+else:
+
+    A = (-b/(2*a)) 
+    s = (4*a*c - b**2)      
+    B = (math.sqrt(s))/(2 * a)
+
+    print("Roots are complex and imaginary {} + {}i  and {} - {}i".format(A,B,A,B))
+

Software/MyRepoPy/Day2.py

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+n = int(input("Enter number of rows: "))
+for i in range(n):
+    print(' '*(2*(n-1-i)),end=' ')
+    r = (2*i)+1
+    for j in range(r):
+        ## make the 1st iteration for range/2
+        if (j <= (int(r/2))):
+            print(chr(65+j),end=' ')
+            m = (65+j)
+        ## return back from that range/2 to 0
+        else:
+            print((chr(m - 1 - j + (int(r/2)+1))),end=' ')
+    print()

Software/MyRepoPy/Day2.txt

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+n = int(input("Enter number of rows: "))
+for i in range(n):
+    print(' '*(2*(n-1-i)),end=' ')
+    r = (2*i)+1
+    for j in range(r):
+        ## make the 1st iteration for range/2
+        if (j <= (int(r/2))):
+            print(chr(65+j),end=' ')
+            m = (65+j)
+        ## return back from that range/2 to 0
+        else:
+            print((chr(m - 1 - j + (int(r/2)+1))),end=' ')
+    print()

Software/MyRepoPy/Day3 (2).txt

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+import math
+m = int(input("Enter the starting number of GP Series: "))
+n = int(input("Enter the number of terms for the GP Series: "))
+r = int(input("Enter the common ratio of G.P. Series: "))
+sum = 0
+for i in range(n):
+    print(m * (pow(r,i)))
+
+    print(' ')
+sum = m *((pow(r,n))-1/(r-1))
+print("SUM ={}".format(int(sum)))

Software/MyRepoPy/Day3.py

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+import math
+m = int(input("Enter the starting number of GP Series: "))
+n = int(input("Enter the number of terms for the GP Series: "))
+r = int(input("Enter the common ratio of G.P. Series: "))
+sum = 0
+for i in range(n):
+    print(m * (pow(r,i)))
+
+    print(' ')
+sum = m *((pow(r,n))-1/(r-1))
+print("SUM ={}".format(int(sum)))
+ch = input("Enter any key to exit")

Software/MyRepoPy/Day_10.py

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+n = list(input("Enter a list of numbers here: "))
+temp = n[0]
+n[0] = n[-1]
+n[-1] = temp
+print(n)
+input("Enter any key to exit")

Software/MyRepoPy/Day_11.py

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+str1 = input("Enter time in this format HH:MM:SS AM/PM  ")
+if str1[-2:] == 'AM' and str1[:2] == "12":
+    print ("00" + str1[2:-2])
+elif str1[-2:] == "AM":
+    print (str1[:-2])
+elif str1[-2:] == "PM" and str1[:2] == "12":
+    print (str1[:-2])
+else:
+    print (str(int(str1[:2]) + 12) + str1[2:8])
+input("Enter any key to exit")

Software/MyRepoPy/Day_12.py

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+x = int(input("Enter an integer: "))
+if x % 11 == 0:
+    print("Yes")
+else:
+    print("No")
+input("Enter any key to exit")

Software/MyRepoPy/Day_13.py

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+def prime(n):
+    bru = 0
+    for i in range (2,n):
+        if n % i == 0:
+            bru = 1
+            break
+    if bru == 0 or n == 1:
+        return 1
+    else:
+        return 0
+def primebig(k):
+    for i in range(1,k):
+        if k % i == 0:
+            if prime(i):
+                t = i
+    return t
+
+k = int(input("Enter a number from 1 to 1015 to get its largest prime factor:"))
+print (primebig(k))      

Software/MyRepoPy/Day_14.py

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+str1 = input("Enter any String: ")
+str2 = input("Enter the substring you want to replace: ")
+str3 = input("Enter the string you want to replace it with: ")
+s = str1.replace(str2,str3)
+print("The original string is: ",str1)
+print("The substring you want to replace: ",str2)
+print("The string you want to use instead: ",str3)
+print(s)
+input("Enter any key")

Software/MyRepoPy/Day_15.py

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+mc = input("Enter your Secret Code")
+c=0
+for i in mc:
+    if i == " ":
+        print (chr(ord(i)),end = "" )
+        c=0
+    elif c%2 == 0:
+        print (chr(ord(i)-1),end = "" )
+        c+=1
+    elif c%2 == 1:
+        print (chr(ord(i)+1),end = "" )
+        c+=1
+print("")
+m = input("Enter any key")

Software/MyRepoPy/Day_17.py

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+def fibonacci(a,b,n):
+    if n>0:
+        print (a+b)
+        fibonacci(b,a+b,n-1)
+
+a=int(input())
+b=int(input())
+n=int(input())
+print("Fibonacci Series")
+print (a)
+print (b)
+fibonacci(a,b,n)
+h=input("Enter any key")

Software/MyRepoPy/Day_4.py

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+def prime(x):
+    z=0
+    if x>1:
+        for i in range(2,x):
+            if x%i == 0:
+                return 0
+                z=1
+        if z==0:
+            return 1
+
+a = int (input ("Enter a beginning number"))
+b = int (input ("Enter a ending number")) 
+
+for i in range(a,b+1):
+    if prime(i):
+        print ("{} ".format(i))
+
+ch = input("Press any key to exit")        

Software/MyRepoPy/Day_6.py

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+x = int(input("Enter a number: "))
+s = []
+while x > 0:
+    i = x % 10
+    s.append(i)
+    x = x//10
+    y = s.count(i)
+
+    print("The frequency of {} is = {}".format(i,y))

Software/MyRepoPy/Day_7.py

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+def check_pal(x):
+    x = x.replace(' ','')
+    return x == x[::-1]

Software/MyRepoPy/Day_8.py

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+n = int(input("Enter the number of scores: "))
+A = []
+for i in range(1,n+1):
+    A.append(i)
+A.sort()
+print(A)
+print("The runner-up score is: ",A[n-2])
+input("Enter any key to exit")

Software/MyRepoPy/Day_9.py

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+s = int(input("Input any number of your Choice: "))
+sum = 0
+for num in range(1,s+1):
+    x = s%num
+    if x == 0:
+
+        if num % 2 != 0:
+            sum += num
+print(sum)
+ch = input("Enter any key to exit")

Software/MyRepoPy/readme.md

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+21 days programming challenge solution.