commit some answer

Day01-15/code/Day03/piecewise.py

@@ -16,4 +16,4 @@
     y = x + 2
 else:
     y = 5 * x + 3
-print('f(%.2f) = %.2f' % (x, y))
+print('f(x = %.2f) = %.2f' % (x, y))

Day01-15/code/Day04/for4.py

@@ -9,12 +9,42 @@
 
 num = int(input('请输入一个正整数: '))
 end = int(sqrt(num))
+# end = int(num) - 1
+print('end is %d' %end)
 is_prime = True
 for x in range(2, end + 1):
+    print('for x is %d' %x)
     if num % x == 0:
         is_prime = False
         break
 if is_prime and num != 1:
     print('%d是素数' % num)
 else:
     print('%d不是素数' % num)
+
+#判断是否素数，只需要试除到其根号对应的数即可
+def is_prime(input):
+    '''
+    判断是否素数的方法
+    :param int:
+    :return:
+    '''
+    if not isinstance(input, int):
+        print('the input is not int!')
+        raise Exception('the input is not int!')
+    num = int(input)
+    end = int(sqrt(input))
+    is_prime = True
+    for x in range(2, end + 1):
+        print('for x is %d' % x)
+        if num % x == 0:
+            is_prime = False
+            break
+    if is_prime and num != 1:
+        print('%d是素数' % num)
+        return True
+    else:
+        print('%d不是素数' % num)
+        return False
+
+is_prime(1.4)

Day01-15/code/Day05/my_answer.py

@@ -0,0 +1,32 @@
+import time
+
+
+def get_narcissistic_number():
+    '''
+    寻找水仙花数，返回所有的水仙花数列表
+    :return:
+    '''
+    start = time.time()
+    print(start)
+    narci_list = []
+    for num in range(100, 1000):
+        hundreds = num // 100
+        tens = num // 10 % 10
+        units = num % 10
+        print('the %d is divide into %d %d %d' % (num, hundreds, tens, units))
+        if hundreds ** 3 + tens ** 3 + units **3 == num:
+            narci_list.append(num)
+    print(narci_list)
+    end = time.time()
+    print(end)
+    print('use time is %f second' % (end - start))
+    return narci_list
+
+def get_perfect_num():
+    '''
+    获得完美数
+    :return:
+    '''
+
+if __name__ == '__main__':
+    get_narcissistic_number()

Day01-15/day1-15.py

@@ -0,0 +1,18 @@
+def day_one():
+    import turtle
+
+    turtle.pensize(4)
+    turtle.pencolor('red')
+    turtle.forward(100)
+    turtle.right(90)
+    turtle.forward(100)
+    turtle.right(90)
+    turtle.forward(100)
+    turtle.right(90)
+    turtle.forward(100)
+    turtle.mainloop()
+
+
+if __name__ == '__main__':
+
+    day_one()