place random unique IDs in array. If it exists, then it won't store into array.

Insert Unique ID sorted way in array

let arrayOfID = [], temp;

storeBillIDinArray = (ID) => {
    if(arrayOfID.length === 0){
        arrayOfID.push(ID);
        console.log(`Initial Array of ID: ${arrayOfID}`);
    }else{
        for(let i = 0; i < arrayOfID.length; i++){
            if(arrayOfID[i] === ID){
                console.log(`already exist!!`);
                temp = null;
                break;
            }else{
                console.log(`ID doesn't exist!!`);
                temp = ID;                    
            }
        }
        if(temp !== null){
            arrayOfID.push(temp);
        }
        
    }
    let sortedArray = arrayOfID.sort((a, b) => return a-b) ; 
    console.log(`Array of ID: ${sortedArray}`);
}