随机字符串

下面是Ruby版本的：

#Get random alpha string

def alphaList
  ((0..9).inject([]){|arr,x|arr<<x.to_s}+('a'..'z').to_a+('A'..'Z').to_a)
end

def randChar(alpha,size)
  asize=alpha.size
  (1..size).inject([]) do |arr,x|
    arr<<alpha[(rand*10**(asize.to_s.size)%asize).round]
  end.to_s
end

puts randChar(alphaList,100000)

再下面是C版本的：

int i,j;
char randStr[10],rs[1];
char str[64] = "00123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; 

memset(randStr, 0, sizeof(randStr));
	for(i=0;i<10;i++){
		j=rand()%64;
		sprintf(rs,"%c",str[j]);
		strcat(randStr,rs);
	}

评论

1 楼 CharlesCui 2009-04-30  

def alphaList  
  ((0..9).inject([]){|arr,x|arr<<x.to_s}+('a'..'z').to_a+('A'..'Z').to_a)  
end  

脱了裤子放屁。

def alphaList  
  (('0'..'9').to_a+('a'..'z').to_a+('A'..'Z').to_a)  
end