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Find the $n$ th digit of the infinite integer sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, …
Note:n is positive and will fit w...
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Find the sum of all left leaves in a given binary tree.
Example:
1234567 3 / \ 9 20 / \ 15 7There are two left...
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A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two con...
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A frog is crossing a river. The river is divided into x units and at each unit there may or may not exist a stone. The frog c...
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Intro常用的人脸特征向量生成的方法都存在一定的问题:
1. 基于分类的方法
- 网络中用于分类的全连接层W随着参与训练的identity的增加而增加,使得网络参数量大。
- 在open-set的情景下,学习到的人脸特征区分力不够。
2...
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Given an array which consists of non-negative integers and an integer m, you can split the array into m non-empty continuous ...
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Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built...
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Given an m x n matrix of non-negative integers representing the height of each unit cell in a continent, the “Pacific ocean” ...
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Given a non-empty array of integers, return the third maximum number in this array. If it does not exist, return the maximum ...
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Given two non-negative integers num1and num2 represented as string, return the sum of num1 and num2.
Note:
The length of bot...