for 循环 与 while 循环

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                                             for 循环 与 while 循环

  • 打印三角形

     1 # 打印三角形
 2 # * 
 3 # * * 
 4 # * * *
 5 # * * * *
 6 # * * * * *  
 7 
 8 # 使用 for 循环
 9 for i in range(5):
10     print("* " * (i + 1))
11 
12 # 使用 while 语句
13 i = 1
14 while i < 6:
15     j = 0
16     while j < i:
17         print("*", end=‘ ‘)
18         j += 1
19     print(" ")
20     i += 1

     

  • 打印空心三角形

     1 # 打印空心三角形
 2 # *
 3 # * *
 4 # *   *
 5 # *     *
 6 # * * * * *
 7 #for 循环
 8 for i in range(0, 5):
 9      for j in range(i+1):
10          if i == 4:
11              print("* ",end=‘‘)
12              continue
13          if j == 0 or j == i:
14              print("* ",end=‘‘)
15          else:
16              print("  ",end=‘‘)
17      print( )
18 
19 #while 循环
20 i = 1
21 while i < 6:
22     j = 0
23     while j < i:
24         j += 1
25         if i == 5:
26             print("* ", end=‘‘)
27             continue
28         if j == 1 or j == i:
29             print("* ", end=‘‘)
30         else:
31             print("  ", end=‘‘)
32     print( )
33     i += 1

     

  • 打印金字塔

     1 # 打印金字塔
 2 #     *
 3 #    * *
 4 #   * * *
 5 #  * * * *
 6 # * * * * *
 7 #for 循环
 8 for i in range(5):
 9      for k in range(4-i):
10          print("",end=" ")
11      for j in range(i+1):
12          print("*",end=" ")
13      print("")
14 
15 #while 循环
16 i = 0
17 while i<5:
18     k = 0
19     while k < 5-i:
20         print("",end=" ")
21         k += 1
22     j = 0
23     while j < i+1:
24         print("*",end=" ")
25         j += 1
26     i += 1
27     print("")

     

  • 打印倒三角

     1 # 打印倒三角
 2 # * * * * *
 3 #  * * * *
 4 #   * * *
 5 #    * *
 6 #     *
 7 #for 循环
 8 for i in range(5):
 9       for k in range(i):
10           print("",end=" ")
11       for j in range(5-i):
12           print("*",end=" ")
13       print("")
14 
15 #while 循环
16 i = 0
17 while i<5:
18      k = 0
19      while k < i:
20          print("",end=" ")
21          k += 1
22      j = 0
23      while j < 5-i:
24          print("*",end=" ")
25          j += 1
26      i += 1
27      print("")

     

  • 打印菱形

     1 # 打印菱形
 2 #     *
 3 #    * *
 4 #   * * *
 5 #  * * * *
 6 # * * * * *
 7 #  * * * *
 8 #   * * *
 9 #    * *
10 #     *
11 
12 #for 循环
13 for i in range(5):
14       for k in range(4-i):
15           print("",end=" ")
16       for j in range(i+1):
17           print("*",end=" ")
18       print("")
19 for i in range(4):
20       for k in range(i+1):
21           print("",end=" ")
22       for j in range(4-i):
23           print("*",end=" ")
24       print("")
25 
26 #while 循环
27 i = 0
28 while i<5:
29      k = 0
30      while k < 5-i:
31          print("",end=" ")
32          k += 1
33      j = 0
34      while j < i+1:
35          print("*",end=" ")
36          j += 1
37      i += 1
38      print("")
39 i = 0
40 while i<4:
41      k = 0
42      while k < i+2:
43          print("",end=" ")
44          k += 1
45      j = 0
46      while j < 4-i:
47          print("*",end=" ")
48          j += 1
49      i += 1
50      print("")

     

  • 打印空心菱形

     1 # 打印空心菱形
 2 #     * 
 3 #    * * 
 4 #   *   * 
 5 #  *     * 
 6 # *       * 
 7 #  *     * 
 8 #   *   * 
 9 #    * * 
10 #     * 
11 
12 #for 循环
13 for i in range(5):
14       for k in range(4-i):
15           print("",end=" ")
16       for j in range(i+1):
17           if i == 5:
18              print("*",end=" ")
19              continue
20           if j == 0 or j == i:
21               print("*",end=" ")
22           else:
23               print(" ",end=" ")
24       print("")
25 for i in range(4):
26       for k in range(i+1):
27           print("",end=" ")
28       for j in range(4-i):
29           if i == 3:
30              print("*",end=" ")
31              continue
32           if j == 0 or j == 3-i:
33               print("*",end=" ")
34           else:
35               print(" ",end=" ")
36       print("")

     

  • 打印九九乘法表

     1 # 打印九九乘法表
 2 # 1 * 1 = 1 
 3 # 
 4 # 2 * 1 = 2 2 * 2 = 4 
 5 # 
 6 # 3 * 1 = 3 3 * 2 = 6 3 * 3 = 9 
 7 # 
 8 # 4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16 
 9 # 
10 # 5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25 
11 # 
12 # 6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30 6 * 6 = 36 
13 # 
14 # 7 * 1 = 7 7 * 2 = 14 7 * 3 = 21 7 * 4 = 28 7 * 5 = 35 7 * 6 = 42 7 * 7 = 49 
15 # 
16 # 8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64 
17 # 
18 # 9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81
19 
20 # for 循环
21 for i in range(1, 10):
22     for j in range(1, i + 1):
23         print("%d * %d = %d " % (i, j, i * j), end=‘ ‘)
24     print("
")
25 
26 # while 循环
27 i = 1
28 while i < 10:
29     j = 1
30     while j <= i:
31         print("%d * %d = %d" % (i, j, i * j), end=‘ ‘)
32         j += 1
33     print("
")
34     i += 1

     

  • 求水仙花数

    #for 循环
for i in range(100,1000):
     x = i // 100
     y = i // 100 % 10
     z = i % 10
     if  x*x*x + y*y*y + z*z*z == i:
         print(i)

     

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