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廖老师，看着小心翼翼心惊胆战，波涛汹涌的，弱弱的问一句，这两有啥区别

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快乐小张701

#1 Created at ... [Delete] [Delete and Lock User] 
if (n == (-1)) {

和

if (n == -1) {

廖雪峰

#2 Created at ... [Delete] [Delete and Lock User]

没区别，突出一个负数

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