年华201905241506786

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全部文章（共76篇）

题解 | #域名进行计数排序处理#

#!/bin/bash # 业务逻辑 # 读取文件 # 正则匹配到www.com 内容，排序，计算uniqe -c awk -F "//" '{print $2}' nowcoder.txt | awk -F "/" '{print $1}' | sor...

2024-12-05

0 52

题解 | #求平均数#

import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scan = new Scanner(System.in); //...

2024-12-04

0 64

题解 | #求平均数#

import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scan = new Scanner(System.in); do...

2024-12-04

0 67

题解 | #判断输入的是否为IP地址#

#!/bin/bash # 定义正则表达式以匹配正确的IPv4地址 ipv4_regex='^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])$' # 逐行读...

2024-12-04

0 63

题解 | #判断输入的是否为IP地址#

#!/bin/bash #!/bin/bash # 定义正则表达式以匹配正确的IPv4地址 ipv4_regex='^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-...

2024-12-04

0 64

题解 | #去掉不需要的单词#

#!/bin/bash grep -v "b" | grep -v "B"

2024-12-04

1 47

题解 | #求平均值#

#!/bin/bash #!/bin/bash # 读取数组长度N read N # 初始化总和为0 sum=0 # 循环读取N个数字并累加到sum中 for ((i = 0; i < N; i++)); do read num sum=$((sum + num)) done # ...

2024-12-04

0 81

题解 | #牛牛的小数输出#

import sys a = float(input()) print("%.2f"% a )

2024-12-03

0 59

题解 | #数组遍历#

import java.util.Scanner; import java.util.*; public class Main { public static void main(String[] args) { int[] ary = new int[6]; ...

2024-12-03

0 37

题解 | #统计复旦用户8月练题情况#

# 获取8月份用户 select a.device_id, a.university, count( question_id) as question_cnt, sum(case when result = 'right' then 1 else 0 end ) as right_question_...

2024-12-03

0 81