Remove array Dublicate With NoExtraSpace Using Java

Find and remove Array Elements Which Appear More Then Once.(Remove Duplicate Elements From Sorted Array).

For Example1,

Input,

[4,4,3,3,1]

Output,

[4,3,1]

For Example2,

Input,

[5,5,4,3,1]

Output,

[5,4,3,1]

Solution

1)Iterate the array elements.

2)Intalize The Index Counter(j).

3)Check If The Current And Next

 Element Are Same(i not equals i+1).

4)If Its Not Equal Store arr[i] into

 jth index.

5)do Until Itrate Whole Array Elements.

How to find number of Array Elements

Without Dublicate Array Elements.

J+1 Elements Non Dublicate Array 

Elements.

Java 

class arrayDublicateWithNoExtraSpace{

    public static void main(String[] args){

        int[] arr={1,2,2,3,4,5,5,6,6,6,7};

        int n=arr.length;

        int j=0;

        for(int i=0;i<n-1;i++){

            if(arr[i]!=arr[i+1]){

                arr[j]=arr[i];

                j+=1;

}

}

        //Buffer Last Element Of Given Array

        if(arr[n-1]!=arr[n-2]){

            arr[j]=arr[n-1];

}

        for(int i=0;i<j+1;i++){

            System.out.println(arr[i]);

}

}

}

/*

01-09-2020  4:00pm

------------------------------------------------------------------+                            |

Remove Array Dublicates Without Using Extra Spcing.               |

Time Complexity o(n)                                              |

Comparision Based                                                 |

------------------------------------------------------------------+

*/

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