摘要：
Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. 阅读全文
posted @ 2019-12-19 12:13
xuan_abc
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摘要：
Given a linked list, return the node where the cycle begins. If there is no cycle, return null. To represent a cycle in the given linked list, we use 阅读全文
posted @ 2019-12-19 12:01
xuan_abc
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摘要：
Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twi 阅读全文
posted @ 2019-12-19 11:20
xuan_abc
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