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https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/ Given a sorted linked list, delete all nodes that have duplicate numbers, leaving 阅读全文
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https://leetcode.com/problems/array-partition-i/ Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, 阅读全文
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https://leetcode.com/problems/move-zeroes/ Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order 阅读全文
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https://leetcode.com/problems/remove-nth-node-from-end-of-list/ Given a linked list, remove the n-th node from the end of list and return its head. Ex 阅读全文
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https://leetcode.com/problems/swap-nodes-in-pairs/ Given a linked list, swap every two adjacent nodes and return its head. Example: Note: Your algorit 阅读全文
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https://pintia.cn/problem-sets/994805342720868352/problems/994805348471259136 Recommendation system predicts the preference that a user would give to 阅读全文