a, b = 0, 1 >>> while a < 10: ... print(a) ... a, b = b, a+b

这是 Python 中的斐波那契数列生成方法，输出结果为：

0
1
1
2
3
5
8

斐波那契数列是指这样一个数列：0、1、1、2、3、5、8、13、21、34、……在数学上，斐波那契数列以如下被以递推的方法定义：F(0)=0，F(1)=1, F(n)=F(n-1)+F(n-2)（n>=2，n∈N*）。

相关问题

约瑟夫环改错class Node: def __init__(self,data): self.data=data self.next=Noneclass linklist: def __init__(self): self.head=None self.data=None def isEmpty(self): if self.head: return False else: return True def length(self): if self.isEmpty(): return 0 else: t = self.head n = 1 while t.next: if t.next == self.head: break t = t.next n = n + 1 return n def addhead(self,data): node = Node(data) if self.isEmpty(): self.head = node self.tail = self.head else: node.next = self.head self.head = node self.tail.next = self.head def addtail(self,data): node=Node(data) if self.isEmpty(): self.addhead(data) else: t=self.head n=1 l=self.length() while n<l: n=n+1 t=t.next t.next=node node.next=self.head self.tail=node def delete(self,index): if self.isEmpty(): print("The linked list is empty") else: t = self.head l = self.length() if index == 0: self.head = t.next self.tail.next = self.head elif index == l - 1: n = 1 while n < l - 1: t = t.next n = n + 1 t.next = self.head self.tail = t elif index > l - 1: print("Out of range") elif index < 0: print("Wrong operation") else: n = 1 while n < index - 1: t = t.next n = n + 1 a = t.next.next t.next = a def insert(self,data,index): l = self.length() if index == 0 or self.isEmpty(): self.addhead(data) elif index >= l: self.addtail(data) else: node = Node(data) t = self.head n = 1 while n < index - 1: t = t.next n = n + 1 a = t.next t.next = node node.next = a def search(self,a): t=self.head for i in range(a): t=t.next return t.data def form(self,datalist): self.addhead(datalist[0]) for i in range(1,len(datalist)): self.addtail(datalist[i]) t = self.head while t.next != self.head: t = t.nextn,p=map(int,input().split(' '))data=[]p=p-1for i in range(1,n+1): data.append(i)print(data)datalist=[]for i in range(len(data)): datalist.append(int(data[i]))link=linklist()link.form(datalist)a=pb=[]while link.length()>0: b.append(link.search(a)) link.delete(a) a=a+p while a>=link.length(): a=a-link.length()print(b)

改错如下：

class Node:
    def __init__(self, data):
        self.data = data
        self.next = None

class LinkList:
    def __init__(self):
        self.head = None
        self.tail = None
    
    def isEmpty(self):
        if self.head:
            return False
        else:
            return True
    
    def length(self):
        if self.isEmpty():
            return 0
        else:
            t = self.head
            n = 1
            while t.next:
                if t.next == self.head:
                    break
                t = t.next
                n += 1
            return n
    
    def addhead(self, data):
        node = Node(data)
        if self.isEmpty():
            self.head = node
            self.tail = self.head
        else:
            node.next = self.head
            self.head = node
            self.tail.next = self.head
    
    def addtail(self, data):
        node = Node(data)
        if self.isEmpty():
            self.addhead(data)
        else:
            t = self.head
            n = 1
            l = self.length()
            while n < l:
                n += 1
                t = t.next
            t.next = node
            node.next = self.head
            self.tail = node
    
    def delete(self, index):
        if self.isEmpty():
            print("The linked list is empty")
        else:
            t = self.head
            l = self.length()
            if index == 0:
                self.head = t.next
                self.tail.next = self.head
            elif index == l - 1:
                n = 1
                while n < l - 1:
                    t = t.next
                    n += 1
                t.next = self.head
                self.tail = t
            elif index > l - 1:
                print("Out of range")
            elif index < 0:
                print("Wrong operation")
            else:
                n = 1
                while n < index:
                    t = t.next
                    n += 1
                a = t.next.next
                t.next = a
    
    def insert(self, data, index):
        l = self.length()
        if index == 0 or self.isEmpty():
            self.addhead(data)
        elif index >= l:
            self.addtail(data)
        else:
            node = Node(data)
            t = self.head
            n = 1
            while n < index:
                t = t.next
                n += 1
            a = t.next
            t.next = node
            node.next = a
    
    def search(self, a):
        t = self.head
        for i in range(a):
            t = t.next
        return t.data
    
    def form(self, datalist):
        self.addhead(datalist[0])
        for i in range(1, len(datalist)):
            self.addtail(datalist[i])
        t = self.head
        while t.next != self.head:
            t = t.next

n, p = map(int, input().split(' '))
data = [i for i in range(1, n+1)]
print(data)

datalist = []
for i in range(len(data)):
    datalist.append(data[i])

link = LinkList()
link.form(datalist)

a = p-1
b = []
while link.length() > 0:
    b.append(link.search(a))
    link.delete(a)
    a += p-1
    while a >= link.length():
        a -= link.length()

print(b)

from random import random def getInputs(): probA = float(input("请输入选手A的能力值(0-1): ")) probB = float(input("请输入选手B的能力值(0-1): ")) return probA,probB def simOneGame(probA, probB): scoreA, scoreB = 0, 0 serving = "A" i=1 while not gameOver(scoreA, scoreB): serving=switchServing(i,serving) i+=1 if serving is "A": if random() < probA: scoreA += 1 else: scoreB += 1 else: if random() < probB: scoreB += 1 else: scoreA += 1 print(scoreA,'--',scoreB) def gameOver(scoreA,scoreB): if scoreA==10 and scoreB ==10: return False elif scoreA ==12 or scoreB==12: return True else: return scoreA==11 or scoreB==11 def switchServing(i,serving): if i%5 == 0 and i>0: if serving is 'A': serving='B' else: serving='A' return serving def Winner(scoreA,scoreB): if scoreA ==12 or scoreB==12: if scoreA == 12: return'A' else: return'B' def simOneChampion(): B=0; A=0; round=1 probA,probB= getInputs(); while True: print('第{}局'.format(round)) r=simOneChampion(probA,probB) round+= 1 if r is 'A': A+= 1 else: B+= 1 if A==2: print('A获胜') break elif B == 2: print('B获胜') break else: continue simOneChampion()这段代码有什么错误

这段代码中有几个错误：

1. 在 simOneGame 函数中，缺少 return 语句，导致该函数不返回任何值。
2. 在 switchServing 函数中，只有当 i%5 == 0 且 i>0 时才会切换发球权，但是在第一局比赛开始前，i 的值为 1，没有进入切换发球权的逻辑。可以在 simOneGame 函数中先将 serving 设置为 "A"，然后在第一次循环前调用一次 switchServing 函数。
3. 在 Winner 函数中，如果比赛还没有结束，该函数不返回任何值。
4. 在 simOneChampion 函数中，调用 simOneChampion 函数时应该传入 probA 和 probB 两个参数，而不是只传入 probA。另外，应该将 simOneChampion 函数的调用放在一个 while 循环中，以便可以连续进行多局比赛。

下面是修改后的代码：

from random import random

def getInputs():
    probA = float(input("请输入选手A的能力值(0-1): "))
    probB = float(input("请输入选手B的能力值(0-1): "))
    return probA, probB

def simOneGame(probA, probB):
    scoreA, scoreB = 0, 0
    serving = "A"
    i = 1
    serving = switchServing(i, serving)
    while not gameOver(scoreA, scoreB):
        i += 1
        serving = switchServing(i, serving)
        if serving == "A":
            if random() < probA:
                scoreA += 1
            else:
                scoreB += 1
        else:
            if random() < probB:
                scoreB += 1
            else:
                scoreA += 1
        print(scoreA, "--", scoreB)
    return Winner(scoreA, scoreB)

def gameOver(scoreA, scoreB):
    if scoreA == 10 and scoreB == 10:
        return False
    elif scoreA == 12 or scoreB == 12:
        return True
    else:
        return scoreA == 11 or scoreB == 11

def switchServing(i, serving):
    if i % 5 == 0:
        if serving == "A":
            serving = "B"
        else:
            serving = "A"
    return serving

def Winner(scoreA, scoreB):
    if scoreA == 12:
        return "A"
    elif scoreB == 12:
        return "B"
    else:
        return None

def simOneChampion():
    B = 0
    A = 0
    round = 1
    while True:
        print("第{}局".format(round))
        r = simOneGame(probA, probB)
        round += 1
        if r == "A":
            A += 1
        elif r == "B":
            B += 1
        if A == 2:
            print("A获胜")
            break
        elif B == 2:
            print("B获胜")
            break

probA, probB = getInputs()
simOneChampion()