JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: Write a program to remove duplicates from sorted array.


Description:

Given array is already sorted, and it has duplicate elements. Write a program to remove duplicate elements and return new array without any duplicate elements. The array should contain only unique elements.


Code:
package com.java2novice.algos;

public class MyDuplicateElements {

	public static int[] removeDuplicates(int[] input){
		
		int j = 0;
        int i = 1;
		//return if the array length is less than 2
        if(input.length < 2){
			return input;
		}
        while(i < input.length){
            if(input[i] == input[j]){
                i++;
            }else{
            	input[++j] = input[i++];
            }    
        }
		int[] output = new int[j+1];
		for(int k=0; k<output.length; k++){
			output[k] = input[k];
		}
		
		return output;
	}
	
	public static void main(String a[]){
		int[] input1 = {2,3,6,6,8,9,10,10,10,12,12};
		int[] output = removeDuplicates(input1);
		for(int i:output){
			System.out.print(i+" ");
		}
	}
}

Output:
2 3 6 8 9 10 12 
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Knowledge Centre
What is transient variable?
Transient variables cannot be serialized. During serialization process, transient variable states will not be serialized. State of the value will be always defaulted after deserialization.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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