通过循环 NSMutableArray 检索整数

发布于 2024-11-27 11:57:05 字数 350 浏览 2 评论 0原文

有人可以告诉我如何通过循环 NSMutableArray 来检索值吗？我的代码基本上将整数添加到数组中，如下所示：

NSMutableArray *ptr = [[NSMutableArray alloc] init];

[ptr addObject:[NSNumber numberWithInt:1]];
[ptr addObject:[NSNumber numberWithInt:2]];
[ptr addObject:[NSNumber numberWithInt:3]];

 // How to retrieve them as integers?

我试图从数组中检索每个数字并将它们加起来为一个总值。

原文

Can someone show me how to retrieve values by looping through a NSMutableArray? My code, which basically adds integer numbers to the array, is below :

NSMutableArray *ptr = [[NSMutableArray alloc] init];

[ptr addObject:[NSNumber numberWithInt:1]];
[ptr addObject:[NSNumber numberWithInt:2]];
[ptr addObject:[NSNumber numberWithInt:3]];

 // How to retrieve them as integers?

I'm trying to retrieve each number from the array and sum them up to a total value.

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熊抱啵儿 2024-12-04 11:57:05

它实际上非常简单：

int totalValue = 0;
for(NSNumber *number in myArray) // Use fast enumeration to iterate through the array
{
    totalValue += [number intValue];
}

Its actually pretty simple:

int totalValue = 0;
for(NSNumber *number in myArray) // Use fast enumeration to iterate through the array
{
    totalValue += [number intValue];
}

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毁梦 2024-12-04 11:57:05

我也是新手，所以我的答案可能是错误的，但试试这个：

int sum = 0;
for (int i = 0, i < [ptr count], i++){
int value = [[ptr objectAtIndex:i] intValue] //you get the int, integerValue is applicable for NSInteger
sum = sum + value;//you adding values
}

I'm also a newbie so my answer may be wrong, but try this:

int sum = 0;
for (int i = 0, i < [ptr count], i++){
int value = [[ptr objectAtIndex:i] intValue] //you get the int, integerValue is applicable for NSInteger
sum = sum + value;//you adding values
}

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