_lightArray=[NSMutableArray arrayWithObjects:@"粮油",@"食用油",@"大米",@"杂粮",@"面粉面条", nil];
self.lightArray=(NSMutableArray*)[[self.lightArrayreverseObjectEnumerator]allObjects];
输出结果:@"面粉面条",@"杂粮",@"大米",@"食用油",@"粮油"
_lightArray=[NSMutableArray arrayWithObjects:@"粮油",@"食用油",@"大米",@"杂粮",@"面粉面条", nil];
self.lightArray=(NSMutableArray*)[[self.lightArrayreverseObjectEnumerator]allObjects];
输出结果:@"面粉面条",@"杂粮",@"大米",@"食用油",@"粮油"