SOURCE

var arr = [1,1,1,2,3,3,4,5,6,6];


function deleteSameNum(nums){
    let reuslt = [];
    for(let i=0; i< nums.length; i++){
        if(reuslt.indexOf(nums[i]) < 0){
            reuslt.push(nums[i])
        }
    }

    return reuslt;
}

console.log(deleteSameNum(arr))