4.1.1. 별 찍기 - 6 ¶
a = int(input())
for i in range(a):
    for j in range(2*a-1-i) : 
        if j>=i :
            print('*', end='')
        else :
            print(' ', end='')
    print('')
4.1.2. 별 찍기 - 7 ¶
a = int(input())
for i in range(2*a-1):
    for j in range(2*a-1 - abs(i+1-a)) : 
        if (i+j)>(a-2) and (i-j)<a :
            print('*', end='')
        else :
            print(' ', end='')
    print('')
4.1.3. 별 찍기 - 8 ¶
a = int(input())
for i in range(2*a-1):
    for j in range(2*a) : 
        if abs(i+1-a) < abs(j+0.5-a) :
            print('*', end='')
        else :
            print(' ', end='')
    print('')
4.1.4. 별 찍기 - 9 ¶
a = int(input())
for i in range(2*a-1):
    for j in range(a + abs(a-i-1)) : 
        if abs(i+1-a) >= (a-j-1) :
            print('*', end='')
        else :
            print(' ', end='')
    print('')
4.2.1. 별 찍기 - 6 ¶
#백준 2443번 별 찍기 - 6
a=int(input())
for i in range(2*a-1, 0, -2):
    for j in range(a-int(i/2)-1):
        print(' ', end='')
    for j in range(i):
        print('*', end='')
    print('')
4.2.2. 별 찍기 - 7 ¶
#백준 2444번 별 찍기 - 7
a=int(input())
for i in range(1, 2*a-1, 2):
    for j in range(a-int(i/2)-1):
        print(' ', end='')
    for j in range(i):
        print('*', end='')
    print('')
for i in range(2*a-1, 0, -2):
    for j in range(a-int(i/2)-1):
        print(' ', end='')
    for j in range(i):
        print('*', end='')
    print('')
4.2.3. 별 찍기 - 8 ¶
#백준 2445 별 찍기 - 8
n=int(input())
mid=2
def printstar(j):
    for i in range(j):
        print('*', end='')
def printspace(j):
    for i in range(j):
        print(' ', end='')
for i in range(1, 2*n):
    if i<=n:
        printstar(i)
        printspace(2*(n-i))
        printstar(i)
        print('')
    else:
        tmp=i-mid
        printstar(tmp)
        printspace(2*(n-tmp))
        printstar(tmp)
        print('')
        mid+=2
4.2.4. 별 찍기 - 9 ¶
#백준 2446 별 찍기 - 9
a=int(input())
for i in range(2*a-1, 0, -2):
    for j in range(a-int(i/2)-1):
        print(' ', end='')
    for j in range(i):
        print('*', end='')
    print('')
for i in range(3, 2*a+1, 2):
    for j in range(a-int(i/2)-1):
        print(' ', end='')
    for j in range(i):
        print('*', end='')
    print('')
4.3.1. 별 찍기 - 6 ¶
n = int(input())
stars = 2 * n - 1
space = 0
for i in range(n):
    for j in range(space):
        print(' ', end='')
    for j in range(stars):
        print('*', end='')
    for j in range(space):
        print(' ', end='')
    print('\n', end='')
    stars -= 2
    space += 1
4.3.2. 별 찍기 - 7 ¶
n = int(input())
starModifier = 2
stars = 1
for i in range(2 * n - 1):
    space = (2 * n - 1 - stars) // 2
    for j in range(space):
        print(' ', end='')
    for j in range(stars):
        print('*', end='')
    for j in range(space):
        print(' ', end='')
    print('\n', end='')
    if stars == (2 * n - 1):
        starModifier = -starModifier
    stars += starModifier
4.3.3. 별 찍기 - 8 ¶
n = int(input())
starModifier = 1
stars = 1
for i in range(2 * n - 1):
    space = (n - stars) * 2
    for j in range(stars):
        print('*', end='')
    for j in range(space):
        print(' ', end='')
    for j in range(stars):
        print('*', end='')
    print('\n', end='')
    if stars == n:
        starModifier = -starModifier
    stars += starModifier
4.3.4. 별 찍기 - 9 ¶
n = int(input())
stars = 2 *n - 1
starModifier = -2
for i in range(2 * n - 1):
    space = (2 * n - 1 - stars) // 2
    for j in range(space):
        print(' ', end='')
    for j in range(stars):
        print('*', end='')
    for j in range(space):
        print(' ', end='')
    print('\n', end='')
    if stars == 1:
        starModifier = -starModifier
    stars += starModifier
4.4.1. 별 찍기 - 6 ¶
def blank (n):
  for i in range (n):
    print(' ',end = "")
def point (n):
  for i in range (n):
    print('*',end='')
N = int(input())
for i in range(N):
    blank(i)
    point(2*N - (2*i +1))
    print()
4.4.2. 별 찍기 - 7 ¶
def blank (n):
  for i in range (n):
    print(' ',end = "")
def point (n):
  for i in range (n):
    print('*',end='')
N = int(input())
for i in range(N):
  blank(N - i - 1)
  point(2*i + 1)
  print()
for i in range(N-1):
  blank(i + 1)
  point(2*(N-1) - (2*i+1))
  print()
4.4.3. 별 찍기 - 8 ¶
def blank (n):
  for i in range (n):
    print(' ',end = '')
def point (n):
  for i in range (n):
    print('*',end='')
N = int(input())
for i in range(1,N+1):
  point(i)
  blank(2*N - 2*i)
  point(i)
  print()
for i in range(1,N):
  point(N - i)
  blank(2*i)
  point(N - i)
  print()
4.4.4. 별 찍기 - 9 ¶
def blank (n):
  for i in range (n):
    print(' ',end = '')
def point (n):
  for i in range (n):
    print('*',end='')
N = int(input())
for i in range(1,N+1):
  blank(i - 1)
  point(2*N - 2*i + 1)
  print()
for i in range(2,N+1):
  blank(N - i)
  point(2*i - 1)
  print()
4.5.1. 별 찍기 - 6 ¶
n = int(input())
for i in range(n):
    num = 2 * n - (i * 2 + 1)
    print(" " * i + "*" * num)
4.5.2. 별 찍기 - 7 ¶
n = int(input())
for i in range(1, n):
        print(" " * (n-i) + "*" * (2*i - 1))
for i in range(0, n):
        print(" " * i + "*" * (2*(n-i) - 1))
4.5.3. 별 찍기 - 8 ¶
n = int(input())
for i in range(1, n):
        print("*" * i + " " * 2*(n-i) + "*" * i)
for i in range(0, n):
        print("*" * (n-i) + " " * (2*i) + "*" * (n-i))
4.5.4. 별 찍기 - 9 ¶
n = int(input())
for i in range(0, n):
        print(" " * i + "*" * (2*(n-i) - 1))
for i in range(2, n+1):
        print(" " * (n-i) + "*" * (2*i - 1))
4.6.1. 별 찍기 - 6 ¶
n = int(input())
for i in range(n, 0, -1):
    for j in range(n-i):
        print(' ', end='')
    for j in range(i*2-1, 0, -1):
        print('*', end='')
    print("")
4.6.2. 별 찍기 - 7 ¶
n = int(input())
for i in range(1, n):
    for j in range(n-i):
        print(' ', end='')
    for j in range(i*2-1):
        print("*", end='')
    print(" ")
for i in range(n, 0, -1):
    for j in range(n-i):
        print(' ', end='')
    for j in range(i*2-1, 0, -1):
        print('*', end='')
    print("")
4.6.3. 별 찍기 - 8 ¶
n = int(input())
for i in range(2*n-1, 0, -1):
    # 위에서 반까지
    if(i >= n):
        c = 0
        for j in range(2*n - i):
            c = c+1
            print("*", end='')
        for j in range(2*n - 2*c):
            c = c+1
            print(' ', end='')
        for j in range(2*n - c):
            print('*', end='')
        print("")
    # 아래 부분
    else:
        c = 0
        for j in range(i):
            c = c+1
            print("*", end='')
        for j in range(2*n - 2*c):
            c = c+1
            print(' ', end='')
        for j in range(2*n - c):
            print('*', end='')
        print("")













