Swift 1,2,3,4 循环

let num1 = 1;

let num2 = 2;

let num3 = 3;

let num4 = 4;

let array1=NSMutableArray.init(array: [num1,num2,num3,num4]);

let array22 = NSMutableArray.init(array: []);

for index1 in 0..<4 {

let a1 = array1[index1]

for index2  in  0..<4

{

let a2=array1[index2]

if (a1 as! Int)==(a2 as!  Int) {

continue;

}

for index3  in  0..<4

{

let a3=array1[index3]

if (a1  as!  Int)==(a3  as!  Int)||(a2  as!  Int)==(a3  as!  Int) {

continue;

}else{

let mid = (a1  as!  Int)*100+(a2  as!  Int)*10+(a3  as!  Int)

array22.add(mid);

}

}

}

}

print("不重复",array22.count)

print( array22)