WORKSHOP-6 PYTHON

1.Print perfect numbers up to N

##Using 'for' loop
a = int(input("Enter Number :"))
for i in range(1,a+1):
    sumof = 0
    for j in range(1,i):
        if(i % j == 0):
            sumof = sumof+j
    if sumof == i:
        print(i)

##Using 'while' loop
a = int(input("Enter Number :"))
b = 1
c = "1"
while a > 0:
    d = 0
    e = 1
    while e < b:
        if(b % e == 0):
            d = d+e
        e = e+1
    if str(e) == str(d):
        print(d,end=" ")
    b = b+1
    a = a-1

2.Print strong numbers up to N

##Using 'for' loop
a = int(input("Enter any Number"))
for i in range(a):
    sumof = 0
    for j in str(i):
        mul = 1
        for k in range(1,int(j)+1):
            mul = mul*k
        sumof = sumof+mul
    if sumof == i:
        print(i)

##Using 'while' loop
a = int(input("Enter any Number :"))
c = 1
while c <= a:
    d = c
    e = 0
    f = str(d)
    g = len(f)
    while g > 0:
        h = d%10
        m = 1
        while h > 0:
            m = m*h
            h = h-1
        d = d//10
        e = e+m
        g = g-1
    if str(e) == f:
        print(e,end=" ")
    c =c+1

3.Print composite numbers up to N

##Using 'for' loop
a = int(input("Enter any number :"))
for i in range(2,a+1):
    sf = 0
    for j in range(2,i+1):
        if i%j == 0:
            sf = sf+1
    if sf != 1:
        print(i,end=" ")

##Using 'while' loop
a = int(input("Enter any number :"))
b = 2
while a > 0:
    d = 0
    e = 1
    while e <= b:
        if b%e == 0:
            d = d+1
        e = e+1
    if d != 2:
        print(b,end=" ")
    b = b+1
    a = a-1

4.Print prime numbers up to N

##Using 'for' loop
a = int(input("Enter any number :"))
for i in range(2,a+1):
    sf = 0
    for j in range(2,i+1):
        if i%j == 0:
            sf = sf+1
    if sf == 1:
        print(i,end=" ")

##Using 'while' loop
a = int(input("Enter any number :"))
b = 2
while a > 0:
    d = 0
    e = 1
    while e <= b:
        if b%e == 0:
            d = d+1
        e = e+1
    if d == 2:
        print(b,end=" ")
    b = b+1
    a = a-1

5.Print Armstrong numbers up to N

##Using 'for' loop
n = int(input("Enter any Number :"))
for i in range(1,n+1):
    sumb = 0
    c = len(str(i))
    for j in str(i):
        sumb = sumb+(int(j)**c)
    if sumb == i:
        print(i)

##Using 'while' loop
n = int(input("Enter any Number :"))
m = a = 1
while n > 0:
    b = 0
    c = str(a)
    d = len(c)
    while a > 0:
        e = a%10
        b = b+(e**d)
        a = a//10
    if str(b) == c:
        print(b)
    n = n-1
    m = m+1
    a = m

6.Print leap years in between some years

## Using for loop
a = int(input("Enter starting year :"))
b = int(input("Enter ending year :"))
for i in range(b,a,-1):
    if a % 4 == 0:
        print(a)
    a = a+1

## Using while lopp
a = int(input("Enter starting year :"))
b = int(input("Enter ending year :"))
while b >= a:
    if a % 4 == 0:
        print(a)
    a = a+1

1.Print below pattern.
`A B B C C C D D D D E E E E E`

a = int(input("Enter Number of rows :"))
b = ord("A")
for i in  range(1,a+1):
    print((chr(b)+" ")*i)
    b = b+1

2.Print below pattern.
`1 1 2 1 2 3 1 2 3 4 1 2 3 4 5`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1,1):
    for j in range(1,i+1,1):
       print(str(j),end=" ")
    print()

3.Print below pattern.
`1 2 2 3 3 3 4 4 4 4 5 5 5 5 5`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1,1):
    print((str(i)+" ")*i)

4.Print below pattern.
`# # # # # # # # # # # # # # #`

a = int(input("Enter Number of rows :"))
b = "#"
for i in  range(1,a+1):
    print((b+" ")*i)

5.Print below pattern.
`1 2 3 4 5 6 7 8 9 10 11 12 13 14 15`

a = int(input("Enter Number of rows :"))
b = 1
for i in range(1,a+1,1):
    for j in range(1,i+1,1):
        print(str(b),end=" ")
        b = b+1
    print()

6.Print below pattern.
`A B C D E F G H I J K L M N O`

a = int(input("Enter Number of rows :"))
b = ord("A")
for i in range(1,a+1,1):
    for j in range(1,i+1,1):
        print(chr(b),end=" ")
        b = b+1
    print()

7.Print below pattern.
`1 2 1 3 2 1 4 3 2 1 5 4 3 2 1`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1,1):
    for j in range(i):
        print(i,end=" ")
        i = i-1
    print()

8.Print below pattern.
`1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17`

a = int(input("Enter Number of rows :"))
b = 1
for i in range(1,(a*2)+1,2):
    for j in range(1,i+1,1):
        print(str(b),end=" ")
        b = b+1
    print()

9.Print below pattern.
`1 3 2 6 5 4 10 9 8 7 15 14 13 12 11`

a = int(input("Enter Number of rows :"))
b = c = 1
for i in range(1,a+1):
    for j in range(i):
        print(c,end=" ")
        c = c-1
    b = b+i+1
    c = b
    print()

10.Print below pattern.
`1 3 3 5 5 5 7 7 7 7 9 9 9 9 9`

a = int(input("Enter Number of rows :"))
b = 1
for i in range(1,a+1):
    for j in range(i):
        print(b,end=" ")
    b = b+2
    print()

11.Print below pattern.
`1 2 3 4 5 1 2 3 4 1 2 3 1 3 5`

a = int(input("Enter Number of rows :"))
for i in range(a):
    for j in range(1,a+1):
        print(j,end=" ")
        j = j+1
    print()
    a = a-1

12.Print below pattern.
`* * * * * * * * * * * * * * *`

a = int(input("Enter Number of rows :"))
for i in range(a,0,-1):
    for j in range(i):
        print("*",end=" ")
    print()

13.Print below pattern.
`A B C D E A B C D A B C A B A`

a = int(input("Enter Number of rows :"))
for i in range(a,0,-1):
    b = ord("A")
    for j in range(i):
        print(chr(b),end=" ")
        b = b+1
    print()

14.Print below pattern.
`6 6 6 6 6 6 6 6 6 6 6 6 6 6 6`

a = int(input("Enter Number of rows :"))
for i in range(a,0,-1):
    for j in range(i):
        print(6,end=" ")
    print()

15.Print below pattern.
`1 1 1 1 1 2 2 2 2 3 3 3 4 4 5`

a = int(input("Enter Number of rows :"))
b = 1
for i in range(a,0,-1):
    for j in range(i):
        print(b,end=" ")
    print()
    b = b+1

16.Print below pattern.
`5 5 5 5 5 4 4 4 4 3 3 3 2 2 1`

a = int(input("Enter Number of rows :"))
for i in range(a,0,-1):
    for j in range(i):
        print(i,end=" ")
    print()

17.Print below pattern.
`1 2 3 4 5 1 2 3 4 1 2 3 1 2 1`

a = int(input("Enter Number of rows :"))
for i in range(a,0,-1):
    for j in range(1,i+1):
        print(j,end=" ")
    print()

18.Print below pattern.
`5 4 3 2 1 4 3 2 1 3 2 1 2 1 1`

a = int(input("Enter Number of rows :"))
for i in range(a,0,-1):
    for j in range(i):
        print(i,end=" ")
        i = i-1
    print()

19.Print below pattern.
`@ @ @ @ @ @ @ @ @ @ @ @ @ @ @`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(a,i,-1):
        print(" ",end=" ")
    for j in range(1,i+1):
        print("@",end=" ")
    print()

20.Print below pattern.
`1 2 2 3 3 3 4 4 4 4 5 5 5 5 5`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(a,i,-1):
        print(" ",end=" ")
    for j in range(1,i+1):
        print(i,end=" ")
    print()

21.Print below pattern.
`1 1 2 1 2 3 1 2 3 4 1 2 3 4 5`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(a,i,-1):
        print(" ",end=" ")
    for j in range(1,i+1):
        print(j,end=" ")
    print()

22.Print below pattern.
`1 2 3 4 5 6 7 8 9 10`

a = int(input("Enter Number of rows :"))
b = 1
for i in range(1,a+1):
    for j in range(a,i,-1):
        print(" ",end=" ")
    for j in range(1,i+1):
        print(b,end=" ")
        b = b+1
    print()

23.Print below pattern.
`* * * * * * * * * * * * * * * * * * *`

a = int(input("Enter Number of rows :"))
for i in range(a,0,-1):
    for j in range(i):
        print("*",end=" ")
    print()
for i in range(2,a+1):
    for j in range(i):
        print("*",end=" ")
    print()

24.Print below pattern.
`* * * * * * * * * * * * * * * *`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(a,i,-1):
        print("  ",end="  ")
    for j in range(2,(2*i)+1):
        print("* ",end="  ")
    print()
for i in range(a-1,0,-1):
    for j in range(a-i):
        print("  ",end="  ")
    for j in range(2,(2*i)+1):
        print("* ",end="  ")
    print()

25.Print below pattern.
`* * * * * * * * * *`

a = int(input("Enter Number of rows :"))
for i in range(a):
    for j in range(i):
        print("",end=" ")
    for j in range(a):
        print("*",end=" ")
    print()
    a = a-1

26.Print below pattern.
`* * * * * * * * * *`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(a):
        print("",end=" ")
    for j in range(i):
        print("*",end=" ")
    print()
    a = a-1

27.Print below pattern.
`* * * * * * * * * * * * * * * * * * * * * * * * *`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(i):
        print("*",end=" ")
    print()
for i in range(a-1,0,-1):
    for j in range(i):
        print("*",end=" ")
    print()

28.Print below pattern.
`* * * * * * * * * * * * * * * *`

a = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(a,i,-1):
        print(" ",end=" ")
    for j in range(1,i+1):
        print("*",end=" ")
    print()
for i in range(a-1,0,-1):
    for j in range(a,i,-1):
        print(" ",end=" ")
    for j in range(1,i+1):
        print("*",end=" ")
    print()

29.Print below pattern.
`* * * * * * * * * * * * * * * * * * *`

a = b = int(input("Enter Number of rows :"))
for i in range(a):
    for j in range(i):
        print("",end=" ")
    for j in range(a):
        print("*",end=" ")
    print()
    a = a-1
for i in range(2,b+1):
    for j in range(b-2):
        print("",end=" ")
    for j in range(i):
        print("*",end=" ")
    print()
    b = b-1

30.Print below pattern.
`* * * * * * * * * * * * * * * *`

a = b = int(input("Enter Number of rows :"))
for i in range(1,a+1):
    for j in range(a):
        print("",end=" ")
    for j in range(i):
        print("*",end=" ")
    print()
    a = a-1
for i in range(2,b+1):
    for j in range(i):
        print("",end=" ")
    for j in range(b-1):
        print("*",end=" ")
    print()
    b = b-1

*Questions Prepared by--Srikanth.D

Mentor in IT,Dept of IT,RGUKT-SRIKAKULAM
duppada8@rguktsklm.ac.in

Projects

300

Minutes Of Support

Hard Worker

1.Print perfect numbers up to N

2.Print strong numbers up to N

3.Print composite numbers up to N

4.Print prime numbers up to N

5.Print Armstrong numbers up to N

6.Print leap years in between some years

## Using for loopa = int(input("Enter starting year :"))b = int(input("Enter ending year :"))for i in range(b,a,-1): if a % 4 == 0: print(a) a = a+1## Using while loppa = int(input("Enter starting year :"))b = int(input("Enter ending year :"))while b >= a: if a % 4 == 0: print(a) a = a+1RUN

1.Print below pattern. A B B C C C D D D D E E E E E

a = int(input("Enter Number of rows :"))b = ord("A")for i in range(1,a+1): print((chr(b)+" ")*i) b = b+1RUN

2.Print below pattern. 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5

a = int(input("Enter Number of rows :"))for i in range(1,a+1,1): for j in range(1,i+1,1): print(str(j),end=" ") print() RUN

3.Print below pattern. 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5

a = int(input("Enter Number of rows :"))for i in range(1,a+1,1): print((str(i)+" ")*i)RUN

4.Print below pattern. # # # # # # # # # # # # # # #

a = int(input("Enter Number of rows :"))b = "#"for i in range(1,a+1): print((b+" ")*i)RUN

5.Print below pattern. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

a = int(input("Enter Number of rows :"))b = 1for i in range(1,a+1,1): for j in range(1,i+1,1): print(str(b),end=" ") b = b+1 print()RUN

6.Print below pattern. A B C D E F G H I J K L M N O

a = int(input("Enter Number of rows :"))b = ord("A")for i in range(1,a+1,1): for j in range(1,i+1,1): print(chr(b),end=" ") b = b+1 print()RUN

7.Print below pattern. 1 2 1 3 2 1 4 3 2 1 5 4 3 2 1

a = int(input("Enter Number of rows :"))for i in range(1,a+1,1): for j in range(i): print(i,end=" ") i = i-1 print()RUN

8.Print below pattern. 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17

a = int(input("Enter Number of rows :"))b = 1for i in range(1,(a*2)+1,2): for j in range(1,i+1,1): print(str(b),end=" ") b = b+1 print()RUN

9.Print below pattern. 1 3 2 6 5 4 10 9 8 7 15 14 13 12 11

a = int(input("Enter Number of rows :"))b = c = 1for i in range(1,a+1): for j in range(i): print(c,end=" ") c = c-1 b = b+i+1 c = b print()RUN

10.Print below pattern. 1 3 3 5 5 5 7 7 7 7 9 9 9 9 9

a = int(input("Enter Number of rows :"))b = 1for i in range(1,a+1): for j in range(i): print(b,end=" ") b = b+2 print()RUN

11.Print below pattern. 1 2 3 4 5 1 2 3 4 1 2 3 1 3 5

a = int(input("Enter Number of rows :"))for i in range(a): for j in range(1,a+1): print(j,end=" ") j = j+1 print() a = a-1RUN

12.Print below pattern. * * * * * * * * * * * * * * *

a = int(input("Enter Number of rows :"))for i in range(a,0,-1): for j in range(i): print("*",end=" ") print()RUN

13.Print below pattern. A B C D E A B C D A B C A B A

a = int(input("Enter Number of rows :"))for i in range(a,0,-1): b = ord("A") for j in range(i): print(chr(b),end=" ") b = b+1 print()RUN

14.Print below pattern. 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6

a = int(input("Enter Number of rows :"))for i in range(a,0,-1): for j in range(i): print(6,end=" ") print()RUN

15.Print below pattern. 1 1 1 1 1 2 2 2 2 3 3 3 4 4 5

a = int(input("Enter Number of rows :"))b = 1for i in range(a,0,-1): for j in range(i): print(b,end=" ") print() b = b+1RUN

16.Print below pattern. 5 5 5 5 5 4 4 4 4 3 3 3 2 2 1

a = int(input("Enter Number of rows :"))for i in range(a,0,-1): for j in range(i): print(i,end=" ") print()RUN

17.Print below pattern. 1 2 3 4 5 1 2 3 4 1 2 3 1 2 1

a = int(input("Enter Number of rows :"))for i in range(a,0,-1): for j in range(1,i+1): print(j,end=" ") print()RUN

18.Print below pattern. 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1

a = int(input("Enter Number of rows :"))for i in range(a,0,-1): for j in range(i): print(i,end=" ") i = i-1 print()RUN

19.Print below pattern. @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

a = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print("@",end=" ") print()RUN

20.Print below pattern. 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5

a = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print(i,end=" ") print()RUN

21.Print below pattern. 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5

a = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print(j,end=" ") print()RUN

22.Print below pattern. 1 2 3 4 5 6 7 8 9 10

a = int(input("Enter Number of rows :"))b = 1for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print(b,end=" ") b = b+1 print()RUN

23.Print below pattern. * * * * * * * * * * * * * * * * * * *

a = int(input("Enter Number of rows :"))for i in range(a,0,-1): for j in range(i): print("*",end=" ") print()for i in range(2,a+1): for j in range(i): print("*",end=" ") print()RUN

24.Print below pattern. * * * * * * * * * * * * * * * *

a = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(2,(2*i)+1): print("* ",end=" ") print()for i in range(a-1,0,-1): for j in range(a-i): print(" ",end=" ") for j in range(2,(2*i)+1): print("* ",end=" ") print()RUN

25.Print below pattern. * * * * * * * * * *

a = int(input("Enter Number of rows :"))for i in range(a): for j in range(i): print("",end=" ") for j in range(a): print("*",end=" ") print() a = a-1RUN

26.Print below pattern. * * * * * * * * * *

a = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(a): print("",end=" ") for j in range(i): print("*",end=" ") print() a = a-1RUN

27.Print below pattern. * * * * * * * * * * * * * * * * * * * * * * * * *

a = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(i): print("*",end=" ") print()for i in range(a-1,0,-1): for j in range(i): print("*",end=" ") print()RUN

28.Print below pattern. * * * * * * * * * * * * * * * *

a = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print("*",end=" ") print()for i in range(a-1,0,-1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print("*",end=" ") print()RUN

29.Print below pattern. * * * * * * * * * * * * * * * * * * *

a = b = int(input("Enter Number of rows :"))for i in range(a): for j in range(i): print("",end=" ") for j in range(a): print("*",end=" ") print() a = a-1for i in range(2,b+1): for j in range(b-2): print("",end=" ") for j in range(i): print("*",end=" ") print() b = b-1RUN

30.Print below pattern. * * * * * * * * * * * * * * * *

a = b = int(input("Enter Number of rows :"))for i in range(1,a+1): for j in range(a): print("",end=" ") for j in range(i): print("*",end=" ") print() a = a-1for i in range(2,b+1): for j in range(i): print("",end=" ") for j in range(b-1): print("*",end=" ") print() b = b-1RUN

*Questions Prepared by--Srikanth.D

1.Print below pattern.
`A B B C C C D D D D E E E E E`

`a = int(input("Enter Number of rows :")) b = ord("A") for i in range(1,a+1): print((chr(b)+" ")*i) b = b+1`

2.Print below pattern.
`1 1 2 1 2 3 1 2 3 4 1 2 3 4 5`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1,1): for j in range(1,i+1,1): print(str(j),end=" ") print()`

3.Print below pattern.
`1 2 2 3 3 3 4 4 4 4 5 5 5 5 5`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1,1): print((str(i)+" ")*i)`

4.Print below pattern.
`# # # # # # # # # # # # # # #`

`a = int(input("Enter Number of rows :")) b = "#" for i in range(1,a+1): print((b+" ")*i)`

5.Print below pattern.
`1 2 3 4 5 6 7 8 9 10 11 12 13 14 15`

`a = int(input("Enter Number of rows :")) b = 1 for i in range(1,a+1,1): for j in range(1,i+1,1): print(str(b),end=" ") b = b+1 print()`

6.Print below pattern.
`A B C D E F G H I J K L M N O`

`a = int(input("Enter Number of rows :")) b = ord("A") for i in range(1,a+1,1): for j in range(1,i+1,1): print(chr(b),end=" ") b = b+1 print()`

7.Print below pattern.
`1 2 1 3 2 1 4 3 2 1 5 4 3 2 1`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1,1): for j in range(i): print(i,end=" ") i = i-1 print()`

8.Print below pattern.
`1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17`

`a = int(input("Enter Number of rows :")) b = 1 for i in range(1,(a*2)+1,2): for j in range(1,i+1,1): print(str(b),end=" ") b = b+1 print()`

9.Print below pattern.
`1 3 2 6 5 4 10 9 8 7 15 14 13 12 11`

`a = int(input("Enter Number of rows :")) b = c = 1 for i in range(1,a+1): for j in range(i): print(c,end=" ") c = c-1 b = b+i+1 c = b print()`

10.Print below pattern.
`1 3 3 5 5 5 7 7 7 7 9 9 9 9 9`

`a = int(input("Enter Number of rows :")) b = 1 for i in range(1,a+1): for j in range(i): print(b,end=" ") b = b+2 print()`

11.Print below pattern.
`1 2 3 4 5 1 2 3 4 1 2 3 1 3 5`

`a = int(input("Enter Number of rows :")) for i in range(a): for j in range(1,a+1): print(j,end=" ") j = j+1 print() a = a-1`

12.Print below pattern.
`* * * * * * * * * * * * * * *`

`a = int(input("Enter Number of rows :")) for i in range(a,0,-1): for j in range(i): print("*",end=" ") print()`

13.Print below pattern.
`A B C D E A B C D A B C A B A`

`a = int(input("Enter Number of rows :")) for i in range(a,0,-1): b = ord("A") for j in range(i): print(chr(b),end=" ") b = b+1 print()`

14.Print below pattern.
`6 6 6 6 6 6 6 6 6 6 6 6 6 6 6`

`a = int(input("Enter Number of rows :")) for i in range(a,0,-1): for j in range(i): print(6,end=" ") print()`

15.Print below pattern.
`1 1 1 1 1 2 2 2 2 3 3 3 4 4 5`

`a = int(input("Enter Number of rows :")) b = 1 for i in range(a,0,-1): for j in range(i): print(b,end=" ") print() b = b+1`

16.Print below pattern.
`5 5 5 5 5 4 4 4 4 3 3 3 2 2 1`

`a = int(input("Enter Number of rows :")) for i in range(a,0,-1): for j in range(i): print(i,end=" ") print()`

17.Print below pattern.
`1 2 3 4 5 1 2 3 4 1 2 3 1 2 1`

`a = int(input("Enter Number of rows :")) for i in range(a,0,-1): for j in range(1,i+1): print(j,end=" ") print()`

18.Print below pattern.
`5 4 3 2 1 4 3 2 1 3 2 1 2 1 1`

`a = int(input("Enter Number of rows :")) for i in range(a,0,-1): for j in range(i): print(i,end=" ") i = i-1 print()`

19.Print below pattern.
`@ @ @ @ @ @ @ @ @ @ @ @ @ @ @`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print("@",end=" ") print()`

20.Print below pattern.
`1 2 2 3 3 3 4 4 4 4 5 5 5 5 5`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print(i,end=" ") print()`

21.Print below pattern.
`1 1 2 1 2 3 1 2 3 4 1 2 3 4 5`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print(j,end=" ") print()`

22.Print below pattern.
`1 2 3 4 5 6 7 8 9 10`

`a = int(input("Enter Number of rows :")) b = 1 for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print(b,end=" ") b = b+1 print()`

23.Print below pattern.
`* * * * * * * * * * * * * * * * * * *`

`a = int(input("Enter Number of rows :")) for i in range(a,0,-1): for j in range(i): print("",end=" ") print() for i in range(2,a+1): for j in range(i): print("",end=" ") print()`

24.Print below pattern.
`* * * * * * * * * * * * * * * *`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(2,(2i)+1): print(" ",end=" ") print() for i in range(a-1,0,-1): for j in range(a-i): print(" ",end=" ") for j in range(2,(2i)+1): print(" ",end=" ") print()`

25.Print below pattern.
`* * * * * * * * * *`

`a = int(input("Enter Number of rows :")) for i in range(a): for j in range(i): print("",end=" ") for j in range(a): print("*",end=" ") print() a = a-1`

26.Print below pattern.
`* * * * * * * * * *`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(a): print("",end=" ") for j in range(i): print("*",end=" ") print() a = a-1`

27.Print below pattern.
`* * * * * * * * * * * * * * * * * * * * * * * * *`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(i): print("",end=" ") print() for i in range(a-1,0,-1): for j in range(i): print("",end=" ") print()`

28.Print below pattern.
`* * * * * * * * * * * * * * * *`

`a = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print("",end=" ") print() for i in range(a-1,0,-1): for j in range(a,i,-1): print(" ",end=" ") for j in range(1,i+1): print("",end=" ") print()`

29.Print below pattern.
`* * * * * * * * * * * * * * * * * * *`

`a = b = int(input("Enter Number of rows :")) for i in range(a): for j in range(i): print("",end=" ") for j in range(a): print("",end=" ") print() a = a-1 for i in range(2,b+1): for j in range(b-2): print("",end=" ") for j in range(i): print("",end=" ") print() b = b-1`

30.Print below pattern.
`* * * * * * * * * * * * * * * *`

`a = b = int(input("Enter Number of rows :")) for i in range(1,a+1): for j in range(a): print("",end=" ") for j in range(i): print("",end=" ") print() a = a-1 for i in range(2,b+1): for j in range(i): print("",end=" ") for j in range(b-1): print("",end=" ") print() b = b-1`