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Update 面试题02.07.链表相交.md #2955
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Update 面试题02.07.链表相交.md #2955
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在 Python 中,curA == curB 和 curA is curB 是两个不同的操作: == 比较的是两个对象的值是否相等(调用 __eq__() 方法)。 is 比较的是两个对象的身份是否相同(即是否指向内存中的同一个对象)。 在这个链表相交的问题中,我们是想找两个链表在内存中首次相交的节点,所以判断的是:是否是同一个节点对象,而不是值是否相同。值相同并不代表是同一个节点。
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在 Python 中,curA == curB 和 curA is curB 是两个不同的操作:
== 比较的是两个对象的值是否相等(调用 eq() 方法)。
is 比较的是两个对象的身份是否相同(即是否指向内存中的同一个对象)。
在这个链表相交的问题中,我们是想找两个链表在内存中首次相交的节点,所以判断的是:是否是同一个节点对象,而不是值是否相同。值相同并不代表是同一个节点。