Question

How to declare and initialize a matrix with zeros in Swift

Answer 1

import Foundation

let rows = 3
let cols = 4
var matrix = Array(repeating: Array(repeating: 0, count: cols), count: rows)
    
for row in matrix {
    print(row.map { String($0) }.joined(separator: " "))
}
    
print("\n")
    
for i in 0..<rows {
    for j in 0..<cols {
        print("\(matrix[i][j]) ", terminator: "")
    }
    print()
}



/*
run:

0 0 0 0
0 0 0 0
0 0 0 0


0 0 0 0 
0 0 0 0 
0 0 0 0 

*/

 

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