//
// ViewController.m
// A21 - 李洪强 - 输出参数
//
// Created by vic fan on 16/7/3.
// Copyright © 2016年 李洪强. All rights reserved.
//
// 计算数组的最大最小值
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
int a;
int b;
NSArray *numbers = @[@(50),@(80),@(10),@(30)];
[self getMaxAndMin:numbers max:&a min:&b];
NSLog(@"最大值: %d,最小值: %d",a,b);
NSString *str = nil;
[self test:&str];
NSLog(@"%@",str);
}
- (void)test:(NSString **)str{
*str = @"abc";
}
//计算数组的最大值,最小值,平均值
- (void)getMaxAndMin:(NSArray *)numbers max:(int*)max min:(int*)min{
//假设一个值是最大或者最小值,然后跟数组中的每个数进行比较
//假设的最大值
*max = [numbers[0] intValue];
//假设的最小值
*min = [numbers[0] intValue];
for (NSNumber *num in numbers) {
//判断最大值
if(*max < num.intValue){
*max = num.intValue;
}
//判断最小值
if(*min > num.intValue){
*min = num.intValue;
}
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end