mergeSortedArrays

const a1 = [1,3,4,11]
const a2 = [2,4,10,13,34]

const mergeSortedArrays = (arr1,arr2) => {
 //TODO: make sure that arrays are sorted, and are arrays, and only include numbers
 const newArr = [];
 arr1p = 0;
 arr2p = 0;
 
 for(i = 0; i < (arr2.length + arr1.length); i++ ){
 if(arr1[arr1p] <= arr2[arr2p]) {
     newArr.push(arr1[arr1p])
     arr1p++
 }else{
        newArr.push(arr2[arr2p])
     arr2p++

 }
 }
 return newArr
 
}

console.log(mergeSortedArrays(a1,a2))