快速求出数组中最大数\最小数\和\平均数

话不多说直接上代码,省去了一大堆的遍历代码,看着爽多了

- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSArray *array= [NSArray arrayWithObjects:@"2.0",@"2.3",@"3.0",@"4.0",@"10",nil];
    
    CGFloat max =[[array valueForKeyPath:@"@max.floatValue"] floatValue];
    
    CGFloat min =[[array valueForKeyPath:@"@min.floatValue"] floatValue];
    
    CGFloat sum = [[array valueForKeyPath:@"@sum.floatValue"] floatValue];
    
    CGFloat avg = [[array valueForKeyPath:@"@avg.floatValue"] floatValue];
    
    NSLog(@"最大数 = %f,最小值 = %f,和 = %f,平均数 = %f", max, min, sum, avg);
    
}

代码

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