/*squeeze函数：从字符串s中删除字符c*/
void squeeze(char s[], int c)
{
int i, j;
for(i = j = 0;s[i] != ' ';i++)
if(s[i] != c)
s[j++] = s[i];
s[j] = ' ';
}
void squeeze(char s[], int c)
{
int i, j;
for(i = j = 0;s[i] != ' ';i++)
if(s[i] != c)
s[j++] = s[i];
s[j] = ' ';
}
/*strcat函数：将字符串t连接到字符串s的尾部；s必须有足够大的空间*/
void strcat(char s[], char t[])
{
int i, j;
i=j=0;
while(s[i] != ' ')
i++;
while((s[i++] = t[j++]) != ' ')
;
}
/*bitcount函数：统计x中值为1的二进制位数*/
int bitcount(unsigned x)
{
int b;
for(b = 0;x != 0;x >>= 1)
if(x & 01)
b++;
return b;
}