Array - Java Programming

//Array Is a Basic Data Structure in Computer Programming. Array Have Continues Memory Allocation
in Memory Space. Data Are Stored In Continues memory space . We Access Using the index Of The
Element. Index Start From 0 to n-1

//Basic Operations in Array

/*

traverse
search
find
insert
Remove


*/


class array{

    //Traverse A Array
    public static void traverse(int[] arr){
         int n=arr.length;
        for(int i=0;i<n;i++){
            System.out.println(arr[i]);
        }
    }


    //Find Value By Index
    public static void findByIndex(int[] arr,int index){
        System.out.println(arr[index]);
    }


    //Find Index By Value
    public static void findIndex(int[] arr,int value){
        int n=arr.length;
        for(int i=0;i<n;i++){
            if(arr[i]==value){
                System.out.println(i);
            }
        }
    }

    //Insert Function (Array Copy Method)
    public static void insert(int[] arr,int index,int value){
        int n=arr.length;
        int[] brr=new int[n+1];

        for(int i=0;i<index;i++){
            brr[i]=arr[i];
        }
        int j=index;
        while(j<n){
            brr[j+1]=arr[j];
            j++;
        }
        brr[index]=value;
        traverse(brr);
    }

    //Remove Element By Index (Array Copy Method)
    public static void removeByIndex(int[] arr,int index){
        int n=arr.length;
        int[] brr=new int[n-1];

        for(int i=0;i<index;i++){
            brr[i]=arr[i];
        }

        for(int i=index;i<n-1;i++){
            brr[i]=arr[i+1];
        }
        traverse(brr);
    }

    public static void main(String[] args){
        int[] arr={2,3,4,5,1};

        //treaverse array
        //traverse(arr);
        //findByIndex(arr,3);
        //insert(arr,2,5);
        removeByIndex(arr,2);
    }
}

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