How do I fill elements of an array on another array with respecting the size Example

Arra1 = ["1","2","3","4","5"]
Arra2 = ["R","B"]
result = ["R","B","R","B","R"]

How can I achieve that

CodePudding user response：

You could do Array.map() with modulo %:

let Arra1 = ["1","2","3","4","5"]
let Arra2 = ["R","B"]
console.log(Arra1.map((num, ind)=>Arra2[ind%Arra2.length]))
//["R","B","R","B","R"]

CodePudding user response：

You can write this :

r = []
let j = 0
for (let i=0; i<Arra1.length; i  )
{
    if (j>= Arra2.length)
        j = 0
    r.push(Arra2[j])
    j  
}

Hope it helps.