dimnames(temp) = list(c("c1","c2","c3","c4"),c("c4","c2","c1","c3"))
temp = temp[,order(colnames(temp))]
tempA <- c(1,2,3,6,7,9)tempB <- c(2,6,7)
tempC <- tempA[-tempB]# 注意有个负号
print(tempC)
static void(int[]group){
int temp
int pos=0
for(int i=0i<group.Length-1i++)
{
pos=i
for(intj=i+1j<group.Lengthj++)
{
if(group[j]<group[pos])
{
pos=j
}
}//第i个数与最小的数group[pos]交换
temp=group[i]
group[i]=group[pos]
group[pos]=temp
}
}