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  • NSArray排序方法

    sortedArrayUsingComparator:

    NSMutableArray *array = [NSMutableArray arrayWithObjects:
    [NSDictionary dictionaryWithObjectsAndKeys:@"Obj0", [NSNumber numberWithInt:0], nil],
    [NSDictionary dictionaryWithObjectsAndKeys:@"Obj5", [NSNumber numberWithInt:5], nil],
    [NSDictionary dictionaryWithObjectsAndKeys:@"Obj2", [NSNumber numberWithInt:2], nil],
    [NSDictionary dictionaryWithObjectsAndKeys:@"Obj3", [NSNumber numberWithInt:3], nil],
    [NSDictionary dictionaryWithObjectsAndKeys:@"Obj1", [NSNumber numberWithInt:1], nil],
    [NSDictionary dictionaryWithObjectsAndKeys:@"Obj4", [NSNumber numberWithInt:4], nil], nil];

    // NSArray *resultArray = [array sortedArrayUsingSelector:@selector(compare:)];

    NSArray *resultArray = [array sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {

    NSNumber *number1 = [[obj1 allKeys] objectAtIndex:0];
    NSNumber *number2 = [[obj2 allKeys] objectAtIndex:0];

    NSComparisonResult result = [number1 compare:number2];

    return result == NSOrderedDescending; // 升序
    // return result == NSOrderedAscending; // 降序
    }];

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  • 原文地址:https://www.cnblogs.com/paideblogs/p/5148629.html
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