bihicheng

#include <unistd.h>
#include <stdlib.h>

int main(void) 
{
    execlp("ps", "ps", "-o", "pid,ppid", NULL);
    perror("exec ps");
    exit(1);
}

bihicheng

all:
	gcc -g main.c

st:
	gcc -g struct.c -o struct

bihicheng

alist = [34, 6, 9, 10, 11, 23, 26, 28, 30]
# alist = [26, 28, 30, 34, 56,9, 10, 11, 23]

def find(k):
    return binarysearch(alist, k, 0, len(alist)-1)

def binarysearch(la, k, start, end):
    if start > end:
        return -1

bihicheng

/** 
 * 环形队列
 * author: haicheng.bi
 */
#include <stdio.h>

#define MAX_ROW 5
#define MAX_COL 5
#define SIZE 10

bihicheng

/**
 * 迷宫问题
 * author: haicheng.bi
 */

#include<stdio.h>

#define MAX_ROW 5
#define MAX_COL 5

bihicheng

/*
 * pow
 * 
 * author: haicheng.bi
 */

#include<stdio.h>
#include<time.h>

double mypow(double base, int n)

bihicheng

/* 
 * 平方根
 * author: haicheng.bi
 */
#include<stdio.h>

double myabs(double n) 
{
    if(n < 0) {
        return -n;

bihicheng

#!/bin/bash
#description: switch network to an avaliable one
#author: haicheng.bi

netstatus=$(nmcli general status | awk 'NR > 1 { print $2 }')
ifcfg_path="/etc/sysconfig/network-scripts/ifcfg-有线连接_1"
ip=$(sed -n 's/IPADDR=\(.*\)/\1/p' $ifcfg_path)
gateway=$(sed -n 's/GATEWAY=\(.*\)/\1/p' $ifcfg_path)

function echo_with_date {

bihicheng

/*
 * 在字符串中查找字符
 * 返回字符所在位置
 * author: haicheng.bi
 */
 #include<stdio.h>

#define N 10

int a[N] = {1, 12, 3, 14, 5, 46, 7, 78, 79, 1890};

bihicheng

/*
 * 折半查找
 * author: haicheng.bi
 */
 #include<stdio.h>
 #define N 10

 int a[N] = {1, 4, 5, 6, 7, 8, 10, 19, 20, 300};

int binary_search(int start, int end, int k)