2D Array - DS

2DArray.swift

// Interview Preparation Kit > Arrays > 2D Array - DS
var arr = [[1, 1, 1, 0, 0, 0], [0, 1, 0, 0, 0, 0], [1, 1, 1, 0, 0, 0], [0, 0, 2, 4, 4, 0], [0, 0, 0, 2, 0, 0], [0, 0, 1, 2, 4, 0]]

var arrayOfSum : [Int] = []

for row in 0..<arr.count {
    if (row >= 0 && row <= 3) {
        for col in 0..<arr.count {
            if (col > 0 && col < 5) {
                print ("row \(row) column \(col)")
                let a = arr[row][col-1]
                let b = arr[row][col]
                let c = arr[row][col+1]
                let d = arr[row+1][col]
                let e = arr[row+2][col-1]
                let f = arr[row+2][col]
                let g = arr[row+2][col+1]
                let sum = a + b + c + d + e + f + g
                arrayOfSum.append(sum)
            }
        }
    }
}

print("array of sum \(arrayOfSum)")
print("max = \(String(describing: arrayOfSum.max()))")