Reverse NSMutableArray

Question

What is the best/correct way to reverse an NSMutableArray?

Answer 1

theMutableArray=[[[theMutableArray reverseObjectEnumerator] allObjects] mutableCopy];

Answer 2

Here is the swift version of Reverse NSMutableArray

mutablearray =  NSMutableArray(array: YourMutablearray.reverseObjectEnumerator().allObjects).mutableCopy() as! NSMutableArray

In pure Swift, you can use reverse()

let array = ["Apples", "Peaches", "Plums"]

for item in array.reverse() {
     print("Found \(item)")
}

Source: hacking with swift

------ OR ------

var a = [String]()

a.append("1")
a.append("2")
a.append("3")

print(Array(a.reverse())) // In swift 3.0, method is `reversed()`

Answer 3

For Swift 3

let reversedArray = NSArray()

reversedArray =  NSMutableArray(array:TableDataArr.reverseObjectEnumerator().allObjects).mutableCopy() as! NSMutableArray

Answer 4

you can reverse nsmutablearray with the help of reverseObjectEnumerator. It will return you nsarray then you should create a nsmutablearray with the help of this nsarray

NSArray* reversedArray = [[TableDataArr reverseObjectEnumerator] allObjects];
TableDataArr = [NSMutableArray arrayWithArray:reversedArray];

Answer 5

Why all the complication? Use this:

Swift 3:

let tasksArray = NSArray() 
var reversedTaskArray = tasksArray.reversed() as NSArray

Answer 6

NSArray *Farr = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7"];

NSMutableArray *Reversearr1 = [[NSMutableArray alloc]init];
NSInteger j=[Farr count];
for (int i=1; i<=j; i++) {
    [Reversearr1 addObject:[Farr objectAtIndex:j-i] ];
}