Given a 4*4 matrix. Print the Matrix in Spiral Order

SpiralMatrix

func sprialForm(of matrix: inout [[Int]]) -> [Int] {
    let currentIndex = 0
    var pritableArray: [Int] = []
    
    while currentIndex < matrix.count - 1 {
        
        // ---------> Right elements
        for item in matrix[currentIndex] {
            pritableArray.append(item)
        }
        
        print("reduced matrix: \(matrix)")
        
        // Remove first row elements
        matrix.remove(at: currentIndex)
        
        // ----------> Down Elements
        for (topIndex, element) in matrix.enumerated() {
            var internalElement = element
            
            for (index, item) in internalElement.enumerated() {
                if index == internalElement.endIndex - 1 {
                    
                    pritableArray.append(item)
                    
                    // Remove last element one by one
                    internalElement.remove(at: index)
                    
                    matrix[topIndex] = internalElement
                }
            }
        }
        
        print("reduced matrix: \(matrix)")
        
        // ---------> left Elements
        if let lastElement = matrix.last {
            for item in lastElement.reversed() {
                pritableArray.append(item)
            }
            
            matrix.remove(at: matrix.endIndex - 1)
        }
        
        // print(pritableArray)
        
        // ---------> Top Elements
        for (index, item) in matrix.enumerated().reversed() {
            var subItem = item
            
            for (subIndex, element) in subItem.enumerated() {
                if subIndex == subItem.startIndex {
                    pritableArray.append(element)
                    
                    // Remove Elements
                    subItem.remove(at: subIndex)
                    matrix[index] = subItem
                    break
                }
            }
        }
        
        print("reduced matrix: \(matrix)")
    }
    
    return pritableArray
}