如何進(jìn)行iphone開發(fā)數(shù)組排序

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iphone開發(fā)數(shù)組排序

1。普通數(shù)組排序：

     NSMutableArray *arr = [NSMutableArray arrayWithObjects:@"0",@"8",@"6",@"1",nil];

     NSArray *sortedArray = [arr sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2){

if ([obj1 intValue] > [obj2 intValue]){

return NSOrderedDescending;

}

if ([obj1 intValue] < [obj2 intValue]){

return NSOrderedAscending;

}

return NSOrderedSame;

}];

      NSLog(@"排序后的數(shù)組：%@",sortedArray);

2.數(shù)組中有字典的排序：

    NSMutableArray *myMutableArr = [[[NSMutableArray alloc] init] autorelease];

    NSDictionary *dicOne = [NSDictionary dictionaryWithObjectsAndKeys:@"1",@"price",@"2",@"number", nil];

    NSDictionary *dicTWo = [NSDictionary dictionaryWithObjectsAndKeys:@"6",@"price",@"5",@"number", nil];

    NSDictionary *dicThree = [NSDictionary dictionaryWithObjectsAndKeys:@"3",@"price",@"1",@"number", nil];

    NSDictionary *dicFour = [NSDictionary dictionaryWithObjectsAndKeys:@"4",@"price",@"3",@"number", nil];

    [myMutableArr addObject:dicOne];

    [myMutableArr addObject:dicTWo];

    [myMutableArr addObject:dicThree];

    [myMutableArr addObject:dicFour];

    NSArray *sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"price" ascending:YES]];

    [myMutableArr sortUsingDescriptors:sortDescriptors];

    NSLog(@"排序后的數(shù)組%@",myMutableArr);

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