摘要:
a b c d e f g h i j k l m n o p q r s t u v w x y z 默认使用所有, 且于最后 -n --max-args=MAX-ARGS use at most MAX-ARGS arguments at a time 使用 -n1 使 xargs 每次传入一个 阅读全文
摘要:
set +o history 关闭 set -o history 打开 export HISTCONTROL=ignorespace or export HISTCONTROL=ignoreboth [space] command # 此command不会被记录 export HISTSIZE=0 阅读全文
摘要:
public class Queen { protected int num = 8; // the number of queens // chessboard索引表示行,即第几个queen,chessboard[i]=value,表示第i+1个queen,位于value+1列 int[] che 阅读全文
摘要:
杨辉三角 import java.util.Scanner; public class B { public static void main(String[] args) { int[][] array=new int[10][]; for(int i=0;i<array.length;++i){ 阅读全文
摘要:
import java.util.Scanner; public class B { public static void main(String[] args) { String[] names={"aa","bb","cc","dd"}; System.out.println("name: ") 阅读全文
摘要:
(Array.length-1)/ 2 and Array.length/2 取中值 index Array.length is even * * * * * * ^ (Array.length-1)/2 * * * * * * ^ Array.length/2 当Array.length is e 阅读全文
摘要:
Universal: Disable Bell In the Terminal sed -i '/bell-style none/c \set bell-style none' /etc/inputrc Ubuntu: Setup Fountain sed -i 's@http://.*.ubunt 阅读全文
摘要:
import java.util.Scanner; public class B{ public static void main(String[] args){ Scanner scanner1 = new Scanner(System.in); byte level=scanner1.nextB 阅读全文
摘要:
select concat('drop table ',table_name,';') from information_schema.tables where table_schema='employees' and table_name rlike '^d.*$' into outfile 'd 阅读全文