下面以人类基因为例：
library('biomaRt')
mart <- useDataset("hsapiens_gene_ensembl", useMart("ensembl"))
genes <- rownames(pbmc.markers)
G_list <- getBM(filters= "ensembl_gene_id", attributes= c("ensembl_gene_id","hgnc_symbol"),values=genes,mart= mart)
其中genes为一个向量，打印出来，如： "ENSG00000197579" "ENSG00000123096" "ENSG00000143815" "ENSG00000118257"
第一个：#include<stdio.h>
void main()
{
while(1)
{
void f(int *p,int n)
int i,n,a[1000]
printf("输入人数n(n小于1000):")
scanf("%d",&n)
for(i=1i<=ni++)
a[i]=i
f(a,n)
printf("最后留下的是第%d号.\n",a[1])
}
}
void f(int * p,int n)
{
int i,j,r=3,t
for(n!=1)
{
if(n<r)
{* (p+1)=* (p+2)break}
else
{
for(i=0i<=n/3i++)
{
for(j=1j<3j++)
* (p+2*i+r+j-1)=* (p+3*i+r+j)
}
t=n
n=n-(n-r)/3-1
r=3-(t-r)%3
}
}
}
第二个：（这个是刚学程序设计常做的求两个数的最大公约数和最小公倍数）
#include<stdio.h>
#define P printf
void main()
{
while(1)
{
int g_yue(int x,int y)
int g_bei(int x,int y)
int a,b
P("输入两个正整数:")
scanf("%d%d",&a,&b)
P("(a,b)=%d\n[a,b]=%d.\n",g_yue(a,b),g_bei(a,b))
}
}
int g_yue(int x,int y)
{
int r
while(x%y!=0)
{r=x%yx=yy=r}
return(y)
}
int g_bei(int x,int y)
{
int g_yue(int a,int b)
int r
r=x*y/g_yue(x,y)
return(r)
}
前两个是C,下面的是C++:
#include<iostream>
#include<string>
using namespace std
class Date
{
int day,mon,year
public:
Date(){day=0mon=0year=0}
Date(int k,int j,int i)
{day=imon=jyear=k}
int Gety(){return year}
int Getm(){return mon}
int Getd(){return day}
}
class Teacher
{
char*name
Date born
float wage
public:
Teacher(char*na=NULL,int x=1,int y=0,int z=0,int wa=0):born(x,y,z)
{
if(na==NULL)name=NULL
else
{
name=new char[strlen(na)+1]
strcpy(name,na)
}
wage=wa
}
void Destroy()
{
if(name){delete[]namename=NULL}
}
char*Getname(){return name}
int Getbd(){return born.Getd()}
int Getbm(){return born.Getm()}
int Getby(){return born.Gety()}
float Getwage(){return wage}
}
void main()
{
while(1)
{
double tot[3],tots=0
Teacher t[3]
int x[3],y[3],z[3]
char nam[3][30]
float wag[3]
for(int i=0i<3i++)
{
cin>>nam[i]>>x[i]>>y[i]>>z[i]>>wag[i]
t[i]=Teacher(nam[i],x[i],y[i],z[i],wag[i])
tots=tots+wag[i]
}
cout<<"姓名\t\t"<<"出生年,月,日\t"<<"月工资"<<endl
for(i=0i<3i++)
{
cout<<t[i].Getname()<<'\t'<<t[i].Getby()<<','<<t[i].Getbm()
<<','<<t[i].Getbd()<<'\t'<<t[i].Getwage()<<endl
t[i].Destroy()
}
cout<<"月工资总计为:"<<tots<<endl
}
}
