Question

我有一个需要排序的字符串（不是从高到低），字符串设置为用逗号分隔每个数字，每隔三个数字后面一个空格：

26,2496,1492252306 1049,99,68353132 860,99,59587920 4717,99,43863427 807,99,67243688 1382,99,37865117 1088,99,14810482 95,99,67711274 5,99,200000000 3310， 99,25639438 75,99,157217334 1923,99,29678736 48,99,118806349 133,99,35055345 563,99,21098356 3410,99,17805574 47,99,62821143 2504,99,14821240 5,99,200000000 3076， 99,19425499 474,99,31321799 3983,99,16825678 17826,99,13768252 1129,99,17249030 5393,99,14082021 338,120,137201472 2850,1944 -1，-1 -1，-1 -1，-1 - 1，-1 4509,3988 3863,3987 2632,4148 5790,4105 -1，-1 -1，-1

我需要为3个数字中的每一个创建某种关联。有点像2d数组和字典的东西。有什么建议吗？

Answer 1

假设您的字符串保存在名为“myNumbers”的变量中，请执行以下操作：

NSString *myNumbers = @"26,2496,1492252306 1049,99,68353132 860,99,59587920 4717,99,43863427 807,99,67243688 1382,99,37865117 1088,99,14810482 95,99,67711274 5,99,200000000 3310,99,25639438 75,99,157217334 1923,99,29678736 48,99,118806349 133,99,35055345 563,99,21098356 3410,99,17805574 47,99,62821143 2504,99,14821240 5,99,200000000 3076,99,19425499 474,99,31321799 3983,99,16825678 17826,99,13768252 1129,99,17249030 5393,99,14082021 338,120,137201472 2850,1944 -1,-1 -1,-1 -1,-1 -1,-1 4509,3988 3863,3987 2632,4148 5790,4105 -1,-1 -1,-1";

NSArray *triples = [myNumbers componentsSeparatedByString:@" "];

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

for (NSString *triple in triples) {
    [matrix addObject:[triple componentsSeparatedByString:@","]];
}

NSLog(@"matrix: %@", matrix);
[matrix release];

Answer 2

如何首先用空格分割字符串，然后用逗号分割每个分割的项目，如下面的算法？

threeItems = split main string with white space
for each itemString in threeItems
  threeItem = split itemString with comma
  do something with threeItem
end for

从字符串到数组的内容

2 个答案: