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查询Tags标签: sequence,共有 177条记录-
A - Sequence with Digits
题意:由递推式an+1=an+minDigit(an)⋅maxDigit(an)a_{n+1}=a_n+minDigit(a_n)⋅maxDigit(a_n)an+1=an+minDigit(an)⋅maxDigit(an),其中minDigit(an)minDigit(a_n)minDigit(an),maxDigit(an)maxDigit(a_n)maxDigit(an)分别为ana_nan中最小的一位数和最大…
2021/8/3 23:38:31 人评论 次浏览 -
376. Wiggle Subsequence
package LeetCode_376/*** 376. Wiggle Subsequence* https://leetcode.com/problems/wiggle-subsequence/* A wiggle sequence is a sequence where the differences between successive numbers strictly alternate between positive and negative.* The first differen…
2021/8/1 23:35:55 人评论 次浏览 -
376. Wiggle Subsequence
package LeetCode_376/*** 376. Wiggle Subsequence* https://leetcode.com/problems/wiggle-subsequence/* A wiggle sequence is a sequence where the differences between successive numbers strictly alternate between positive and negative.* The first differen…
2021/8/1 23:35:55 人评论 次浏览 -
Oracle实现自增
先创建一个序列,如果存在了就先删除1 drop sequence weather_s; --DROP sequence *** 删除序列 2 CREATE sequence weather_s minvalue 1 maxvalue 999999 INCREMENT BY 1 START WITH 1; --CREATE sequence ** start WITH * INCREMENT * 选择开始数值和步长再创建一个…
2021/7/30 19:38:58 人评论 次浏览 -
Oracle实现自增
先创建一个序列,如果存在了就先删除1 drop sequence weather_s; --DROP sequence *** 删除序列 2 CREATE sequence weather_s minvalue 1 maxvalue 999999 INCREMENT BY 1 START WITH 1; --CREATE sequence ** start WITH * INCREMENT * 选择开始数值和步长再创建一个…
2021/7/30 19:38:58 人评论 次浏览 -
雪花算法,自动生成主键ID
创建方法package com.numberone.framework.web.controller;/*** 雪花算法 自动生成ID*/ public class IdWorker {//因为二进制里第一个 bit 为如果是 1,那么都是负数,但是我们生成的 id 都是正数,所以第一个 bit 统一都是 0。//机器ID 2进制5位 32位减掉1位 31个pri…
2021/7/29 17:08:47 人评论 次浏览 -
雪花算法,自动生成主键ID
创建方法package com.numberone.framework.web.controller;/*** 雪花算法 自动生成ID*/ public class IdWorker {//因为二进制里第一个 bit 为如果是 1,那么都是负数,但是我们生成的 id 都是正数,所以第一个 bit 统一都是 0。//机器ID 2进制5位 32位减掉1位 31个pri…
2021/7/29 17:08:47 人评论 次浏览 -
python 异常 ValueError setting an array element with a sequence
python 异常 ValueError: setting an array element with a sequence错误原因是因为numpy数组中存在不同类型的数据,如果后来想把数据统一设为比如int32,int64,float32等类型是就出现这个异常错误例子,我本来以为我的数据是 train_vector_X = [[ 9.00000000e+00 5.0000…
2021/7/28 11:06:16 人评论 次浏览 -
python 异常 ValueError setting an array element with a sequence
python 异常 ValueError: setting an array element with a sequence错误原因是因为numpy数组中存在不同类型的数据,如果后来想把数据统一设为比如int32,int64,float32等类型是就出现这个异常错误例子,我本来以为我的数据是 train_vector_X = [[ 9.00000000e+00 5.0000…
2021/7/28 11:06:16 人评论 次浏览 -
2021-7-17 Boredom
难度 1500 题目 CodeForces:Boredomtime limit per test 1 secondmemory limit per test 256 megabytesAlex doesnt like boredom. Thats why whenever he gets bored, he comes up with games. One long winter evening he came up with a game and decided to play it.G…
2021/7/17 23:13:46 人评论 次浏览 -
2021-7-17 Boredom
难度 1500 题目 CodeForces:Boredomtime limit per test 1 secondmemory limit per test 256 megabytesAlex doesnt like boredom. Thats why whenever he gets bored, he comes up with games. One long winter evening he came up with a game and decided to play it.G…
2021/7/17 23:13:46 人评论 次浏览 -
1051 Pop Sequence (25 分)
Given a stack which can keep M numbers at most. Push N numbers in the order of 1, 2, 3, ..., N and pop randomly. You are supposed to tell if a given sequence of numbers is a possible pop sequence of the stack. For example, if M is 5 and N is 7, we can…
2021/7/16 23:35:47 人评论 次浏览 -
1051 Pop Sequence (25 分)
Given a stack which can keep M numbers at most. Push N numbers in the order of 1, 2, 3, ..., N and pop randomly. You are supposed to tell if a given sequence of numbers is a possible pop sequence of the stack. For example, if M is 5 and N is 7, we can…
2021/7/16 23:35:47 人评论 次浏览 -
python学习记录-enumerate函数
enumerate() 函数用于将一个可遍历的数据对象(如列表、元组或字符串)组合为一个索引序列,同时列出数据和数据下标,一般用在 for 循环当中。enumerate(sequence, [start=0])sequence -- 一个序列、迭代器或其他支持迭代对象。 start -- 下标起始位置。list1 = ["hel…
2021/7/16 17:05:28 人评论 次浏览 -
python学习记录-enumerate函数
enumerate() 函数用于将一个可遍历的数据对象(如列表、元组或字符串)组合为一个索引序列,同时列出数据和数据下标,一般用在 for 循环当中。enumerate(sequence, [start=0])sequence -- 一个序列、迭代器或其他支持迭代对象。 start -- 下标起始位置。list1 = ["hel…
2021/7/16 17:05:28 人评论 次浏览