### 習題的解法不只一種，此處只提供參考解法，並非唯一解答，只要符合題目要求，都算答對。 ###



### 練習 1-1 ###

"""
*
**
***
****
*****
"""

for i in range(5 + 1):
    for j in range(1, i + 1):
        print("*", end = '')
    print()



### 練習 1-2 ###

"""
    * 
   * * 
  * * * 
 * * * * 
* * * * * 
 * * * * 
  * * * 
   * * 
    * 
"""

for i in range(-4, 4 + 1):
    print(abs(i) * ' ', end = '')
    for j in range(1, 5 - abs(i) + 1):
        print(" *", end = '')
    print()



### 練習 1-3 ###

"""
1
22
333
4444
55555
"""

for i in range(1, 5 + 1):
    for j in range(1, i + 1):
        print(i, end = '')
    print()



### 練習 1-4 ###

"""
555555555
544444445
543333345
543222345
543212345
543222345
543333345
544444445
555555555
"""

for i in range(-4, 4 + 1):
    for j in range(-4, 4 + 1):
        if (abs(i) > abs(j)):
            print(abs(i) + 1, end = '')
        else:
            print(abs(j) + 1, end = '')
    print()



### 練習 1-5 ###

"""
A
BB
CCC
DDDD
EEEEE
"""

for i in range(5):
    for j in range(i + 1):
        print(chr(65 + i), end = '')
    print()



### 練習 1-6 ###

"""
*
*
*
*
*

*****

1
2
3
4
5

12345

A
B
C
D
E

ABCDE
"""

for i in range(0, 5):
    print('*')
print()
 
for i in range(0, 5):
    print('*', end = '')
print()     
 
for i in range(1, 6):
    print(i)
print()
 
for i in range(1, 6):
    print(i, end = '')
print()
 
for i in range(0, 5):
    print(chr(65 + i))
print()
 
for i in range(0, 5):
    print(chr(65 + i), end = '')



### 練習 1-7 ###

"""
*
**
***
*  *
** **
******
*  *  *
** ** **
*********
*  *  *  *
** ** ** **
************
"""

for i in range(1, 4 + 1):
    for j in range(1, 3 + 1):
        for k in range(i):
            print(j * '*' + (3 - j) * ' ', end = '')
        print()



### 練習 1-8 ###

"""
       * 
      * * 
     *   * 
    *     * 
   *       * 
  *         * 
 *           * 
* * * * * * * *
"""

for i in range(1, 8):
    print((8 - i) * ' ' + '*' + (((i - 1) * 2) - 1) * ' ' + (i > 1) * '*')
print((i + 1) * '* ')



### 練習 1-9 ###

"""
*********
 ******* 
  *****  
   ***   
    *    
   ***   
  *****  
 ******* 
*********
"""

for i in range(-4, 4 + 1):
    for j in range(-4, 4 + 1):
        if (abs(i) > abs(j) - 1):
            print('*', end = '')
        else:
            print(' ', end = '')
    print()



### 練習 1-10 ###

"""
*       *
**     **
***   ***
**** ****
*********
**** ****
***   ***
**     **
*       *
"""

for i in range(-4, 4 + 1):
    for j in range(-4, 4 + 1):
        if (abs(i) < abs(j) + 1):
            print('*', end = '')
        else:
            print(' ', end = '')
    print()



### 練習 1-11 ###

"""
   432101234
 4 *********
 3 **** ****
 2 ***   ***
 1 **     **
 0 *       *
 1 **     **
 2 ***   ***
 3 **** ****
 4 *********
"""

for i in range(-4, 4 + 1):
    for j in range(-4, 4 + 1):
        if ((abs(i) + abs(j)) < 4 ):
            print(' ', end = '')
        else:
            print('*', end = '')
    print()



### 練習 1-12 ###

"""
 9876543210123456789
1********* *********
2 ******** ********
3  ******* *******
4   ****** ******
5    ***** *****
6     **** ****
7      *** ***
8       ** **
9        * *   
"""

for i in range(1, 9 + 1):
    for j in range(-9, 9 + 1):
        if (j == 0) or (i > 9 - abs(j)):
            print (' ', end = '')
        else:
            print('*', end = '')
    print()



### 練習 1-13 ###

"""
AAAAA
BBBB
CCC
DD
E 
"""

for i in range(1, 5 + 1):
    for j in range(6 - i, 0, -1):
        print(chr(i + 64), end = '')
    print()



### 練習 1-14 ###

"""
1
01
101
0101
10101
"""

x = 0

for i in range(1, 5 + 1):
    for j in range(i):
        x= 1 - x
        print(x, end = '')
    print()



### 練習 1-15 ###

"""
01111
20222
33033
44404
55550
"""

for i in range(5):
    for j in range(5):
        if (i == j):
            print(0, end = '')
        else:
            print(i + 1, end = '')
    print()



### 練習 1-16 ###

"""

    *         * 

   * *       * * 

  * * *     * * * 

 * * * *   * * * * 

* * * * * * * * * *
"""

for i in range(1, 5 + 1):
    for j in range(1, 2 + 1):
        print((5 - i) * ' ', end = '')
        for k in range(1, i + 1):
            print('* ', end = '')
        print((5 - i) * ' ', end = '')
    print()
    print()



### 練習 1-17 ###

"""
    1
   121
  12321
 1234321
123454321
"""
    
for i in range(1, 5 + 1):
    for j in range(-4, 4 + 1):
        if ( i >= abs(j) + 1):
            print(i - abs(j), end = '')
        else:
            print(' ', end = '')
    print()



### 練習 1-18 ###

"""

    5
   44
  333
 2222
11111
"""


for i in range(1, 5 + 1):
    for j in range(1, 5 + 1):
        if ((i + j) >= 6):
            print(6 - i, end = '')
        else:
            print(' ', end = '')
    print()



### 練習 1-19 ###

"""
 1
 2  3
 4  5  6
 7  8  9 10
11 12 13 14 15
"""

x = 1
for i in range(1, 5 + 1):
    for j in range(1, i + 1):
        print('%3d' % (x), end = '')
        x = x + 1
    print()



### 練習 1-20 ###

"""
ABCDEFEDCBA
ABCDE EDCBA
ABCD   DCBA
ABC     CBA
AB       BA
A         A
"""

for i in range(1, 6 + 1):
    for j in range(-5, 5 + 1):
        if (i < abs(j) + 2):
            print(chr(65 + (5 - abs(j))), end = '')
        else:
            print(' ', end = '')  
    print()



### 練習 1-21 ###

"""
S
SC
SCH
SCHOO
SCHOOL
"""

str = 'SCHOOL'
for i in range(6):
    print(str[0:i + 1])



### 練習 1-22 ###

"""
e       e
 d     d
  c   c
   b b
    a
   b  b
  c    c
 d      d
e        e
"""

for i in range(-4, 4 + 1):
    for j in range(-4, 4 + 1):
        if (abs(i) == abs(j)):
            print(chr(97 + abs(i)), end = '')
        else:
            print(' ', end = '')
    print()



### 練習 1-23 ###

"""
    * 
   1 1 
  A B A 
 1 2 2 1 
* * 0 * * 
 1 2 2 1 
  A B A 
   1 1 
    *
"""

for i in range(-4, 5):
    print(' ' * abs(i), end = '')
    if abs(i) == 4:
        print('*')        
    else:
        for j in range(5 - abs(i)):
            if abs(i) % 2 == 1:
                m = 1 - (abs(i) // 2)
                w = int(abs(j - m - 0.5))
                print(chr(49 + w) + ' ', end = '')
            else:
                ww = 66 - abs(j - 1)
                if i == 0:
                   ww = 42 * int( j !=  2) + 48 * int(j == 2)
                print(chr(ww) + ' ', end = '')
        print()
print()



### 練習 1-24 ###

"""
*  
** 
***
1  1  
22 22 
333333
A  A  A  
BB BB BB 
CCCCCCCCC
1  2  3  4  
11 22 33 44 
111222333444
1  1  1  1  1  
12 12 12 12 12 
123123123123123
"""

for i in range(1, 5 + 1):
    for j in range(1, 3 + 1):
        for k in range(i):
            if i == 1:
                print(j * '*' + (3 - j) * ' ', end = '')
            if i == 2:
                print(j * str(j) + (3 - j) * ' ', end = '')
            if i == 3:
                print(j * chr(64 + j) + (3 - j) * ' ', end = '')
            if i == 4:
                print(j * str(k + 1) + (3 - j) * ' ', end = '')
            if i == 5:
                print('123'[0:j] + (3 - j) * ' ', end = '')
        print()