相关疑难解决方法(0)

所以如果你有一个NSString:

@"My blue car is bigger than my blue shoes or my blue bicycle";

我想要一个方法,只用蓝色替换第一个蓝色实例,以产生:

@"My green car is bigger than my blue shoes or my blue bicycle";

怎么做到这一点？