In C++ the overloading principle applies not only to functions, but to operators too. That is, of operators can be extended to work not just with built-in types but also classes. A programmer can provide his or her own operator to a class by overloading the built-in operator to perform some specific computation when the operator is used on objects of that class.

What would be the efficient algorithm to find if two given binary trees are equal – in structure and content?

解决CentOS中文显示问题： 一：安装中文支持

1

# yum install "@Chinese Support"

二：安装字体

1

# yum install fonts-chinese.noarch

三：修改配置文件

1

# vi /etc/sysconfig/i18n

将

1
2

LANG="en_US.UTF-8" 
SYSFONT="latarcyrheb-sun16"

修改为

1
2
3
4

LANG="zh_CN.GB18030" 
LANGUAGE="zh_CN.GB18030:zh_CN.GB2312:zh_CN" 
SUPPORTED="zh_CN.UTF-8:zh_CN:zh:en_US.UTF-8:en_US:en" 
SYSFONT="lat0-sun16"

四：

1
2

# cd /usr/share/fonts/
# fc-cache   -fv