SJ_19_Exercise.html

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    <title>Document</title>
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    <script>
        // Q.1 Create an array of numbers [5,6]. Add 4 at the beginning and 7 at the end of the array

        let arr =[5,6];
        arr.unshift(4);
        arr.push(7);
        console.log(arr);
        

        // Q.2 Create a method to return an element at a particular position in the array
        function getElementInArray(array, position){
            return arr[position-1];
        }
        let array= [1,2,3,4,5,6,7,8,9];
        console.log(getElementInArray(array,2));

        // Q.3 Create an array copy using slice method
        function arrCopy(nums){
            return nums.slice(0,nums.length);
        }
        let nums=[4,5,6,7];
        let num2=arrCopy(nums);
        num2[0]=null;
        console.log(nums);
        console.log(num2);
        //Q.4 Create a while loop that exits after counting 5 prime numbers
        // Q.5 Modify the above to finish using break
        let num1 = 2;
        let i=0;
        while(true){
            if(isPrime(num1)){
            console.log(num1);
            i++;
            if (i>=5) break;
            }
            num1++;
        }
            function isPrime(num1){
                for(let i=2;i*i <num1;i++){
                    if(num1%i==0){
                        return false;
                    }
                }
                return true;
            }
        
        //Q.6 Create a for loop that prints numbers 1 to 10 in reverse order
        for(let i=10; i>=1;i--){
            console.log(i);
        }
        //Q.7 Using continue only print positive numbers from the given array [1, -6, 5,7 ,-98]
        let arr2 = [1,-6,5,7,-98];
        for(let i=0;i<arr2.length;i++){
            if(arr2[i]<0){
                continue;
            }
            console.log(arr2[i]);
        }
        // Q.8 Using accumulator pattern concatenate all the strings in the given array['JavaScript', 'coding', 'Learning','Accumulator', 'Concept']
        let arr3=['JavaScript', 'coding', 'Learning','Accumulator', 'Concept'];
        let sum='';
        for(let i=0;i<arr3.length;i++){
        sum+=arr3[i]+ ' ';
        }
        console.log(sum);
        console.log(arr3.join(","));
    </script>
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