我有一堆像这样的数据: “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-06 09:36:13 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-08 17:09:33 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-11 00:42:53 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-13 08:16:13 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”, “2014-01-15 15:49:33 +0000”
我如何按“天”排序这些数据,所以我可以得到第6天,第8天,第11天和第13天。 15 ?? 感谢。
答案 0 :(得分:0)
只需在NSArray中使用比较块。您甚至不需要将字符串转换为日期。
int main(int argc, char *argv[])
{
@autoreleasepool {
NSArray* dateStringArray = @[ @"2014-01-06 09:36:13 +0000",
@"2014-01-18 09:36:13 +0000",
@"2014-01-19 09:36:13 +0000",
@"2014-04-06 09:36:13 +0000",
@"2014-02-06 09:36:13 +0000",
@"2014-05-17 09:36:13 +0000",
@"2014-05-23 09:36:13 +0000",
@"2014-06-06 09:36:13 +0000",
@"2014-06-02 09:36:13 +0000" ] ;
NSLog(@"%@" , dateStringArray) ;
dateStringArray = [dateStringArray sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
NSString *s1 , *s2;
NSRange range = NSMakeRange(8, 2) ;
s1 = [obj1 substringWithRange:range];
s2 = [obj2 substringWithRange:range];
if (s1.integerValue > s2.integerValue)
{
return NSOrderedDescending ;
}
else if (s1.integerValue < s2.integerValue)
{
return NSOrderedAscending ;
}
else
{
return NSOrderedSame;
}
}] ;
NSLog(@"--------");
NSLog(@"%@" , dateStringArray);