LeetCode里的一個題，沒注意到輸入類型是列表格式，所以用類結點形式的鏈表寫出來了，做個記錄

class ListNode:def __init__(self, x):self.val = xself.next = Noneclass Solution:def appendResult(self, result, pre):p = ListNode(None)if result.val == None:result.val = pre.valelse:p = resultwhile p.next!=None:p = p.nextp.next = pre #17return resultdef addTwoNumbers(self, l1, l2):result = ListNode(None); count1 = 0; count2 = 0; Cout = 0#確定哪條鏈長pl1 = l1; pl2 = l2while pl1 != None:pl1 = pl1.nextcount1 += 1while pl2 != None:pl2 = pl2.nextcount2 += 1if count1 >= count2:lon = l1; short = l2else:lon = l2; short = l1# 開始相加while lon!=None or short!=None:pr = ListNode(None) if short != None:pr.val = (Cout + lon.val + short.val)%10Cout = int((Cout + lon.val + short.val)/10)self.appendResult(result, pr)short = short.nextlon = lon.nextelif short == None and lon != None:pr.val = (Cout + lon.val)%10Cout = int((Cout + lon.val)/10)self.appendResult(result, pr)lon = lon.nextif Cout ==1:self.appendResult(result, ListNode(Cout))return result

總結

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