解释错误 [英] Error in interpreting

问题描述

这是一个错误，说isbalanced未定义



我尝试过：

It is giving an error saying isbalanced is undefined

What I have tried:

class Check:
    def isbalanced(self,s):
        a=len(s)
        count=0
        for i in range(0,a):
            if s[i]=='(':
                count=count+1
            else:
                count=count-1
        if count>0:
            return False
        else:
            return True
    def callin(self,s1,s2):
        if (isbalanced(s1+s2)):
            return True
        else:
            return isbalanced(s2+s1)
c=input("Enter string\n")
d=input("Enter string\n")
if (callin(c,d)):
    print("Balanced")
else:
    print("Not Balanced")

推荐答案

试试这个：

Try this:

class Check:
    def isbalanced(self,s):
        a=len(s)
        count=0
        for i in range(0,a):
            if s[i]=='(':
                count=count+1
            else:
                count=count-1
        if count>0:
            return False
        else:
            return True
    def callin(self,s1,s2):
        if (self.isbalanced(s1+s2)):    # note correct use of self. prefix
            return True
        else:
            return self.isbalanced(s2+s1) # ditto

c=input("Enter string\n")
d=input("Enter string\n")
foo = Check()    # create an instance of the Check class

if (foo.callin(c,d)):    # call the callin method on the class instance
    print("Balanced")
else:
    print("Not Balanced")

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