add problem 20200531

圆圆的py/randcreat.py

@@ -0,0 +1,15 @@
+import random
+
+list=""
+
+for i in range(4):
+	j=random.randrange(0,4)
+
+	if j == 1:
+		list = list + str(random.randrange(0,10))
+	elif j == 2:
+		list = list + chr(random.randrange(65,91))
+	else:
+		list = list + chr(random.randrange(97,123))
+
+print(list)

圆圆的py/root.py

@@ -0,0 +1,16 @@
+import math
+a = float(input("a = "))
+b = float(input("b = "))
+c = float(input("c = "))
+if a != 0:
+    delta = math.pow(b, 2)-4*a*c
+    if delta < 0:
+        print("无解")
+    elif delta == 0:
+        s = -b/(2*a)
+        print("一个解x =",s)
+    else :
+        root = math.sqrt(delta)
+        x1 = (-b+root)/(2*a)
+        x2 = (-b-root)/(2*a)
+        print("x1=",x1,"\t","x2=",x2)