Problem in compilation

#1

Please allow me to share screen shot.

getting error on 6,7 and 10 line

import java.util.*;
public class Main {

public static void main(String[] args) {
  int[] arr= {0,1,2,0,1,2};
	Linear_Sort(arr);
	display(arr);
}
public static int[] takeInput(){
	public static void display(int[] arr){
		public static void Linear_Sort(int[] arr){
			while (mid <= high)
			if (arr[mid]==0) {
			swap(arr[low],arr[mid]);
			low++ ; mid++ ;
			}
			else if(arr[mid]==1)
			mid++;
			else
			swap(arr[mid],arr[high]);
			high-- ;
		}
	}
}

}

#2

@drn192000_6c12623796658f98 You have created a function inside a function which is not allowed. Look you have created a function named Linear_Sort inside the function takeInput this is not allowed in Java.(nesting of Function is not allowed)
Also you have to input from the user. DOnt hard code any array
Mistakes :
i) No. and positions of curly brackets is wrong at multiple places.
ii)You might have learn that if you sent to variables to a function and swap them the swaping doesn’t get done. The swapping can only be done in an array by providing the indexes you want to swap.
Corrected Code is below :

import java.util.*;

public class Main {

	public static void main(String[] args) {
		int[] arr = takeInput();
		Linear_Sort(arr);
		display(arr);
	}

	public static int[] takeInput() {
		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();

		int arr[] = new int[n];

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

			arr[i] = sc.nextInt();
		}
		return arr;
	}

	public static void Linear_Sort(int[] arr) {
		int mid = 0;
		int low = 0;
		int high = arr.length - 1;
		while (mid <= high) {
			if (arr[mid] == 0) {
				swap(arr, low, mid);
				low++;
				mid++;
			} else if (arr[mid] == 1)
				mid++;
			else {
				swap(arr, mid, high);
				high--;
			}
		}
	}

	public static void display(int[] arr) {
		for (int element : arr) {
			System.out.println(element);
		}

		System.out.println();
	}

	public static void swap(int[] arr, int x, int y) {

		// Swapping should be simple like this
		int temp = arr[x];
		arr[x] = arr[y];
		arr[y] = temp;
	}
}
#3

IT SHOWS ONE ERROR ON LINE 10

package Lecture1;
import java.util.Scanner;
public class Main {
static Scanner sc=new Scanner(System.in);
public static void main(String[] args){
int n = sc.nextInt();
int[] arr= new int[n];
}
public static int[] takeInput(){
public static display(int[] arr) {
public static void Linear_Sort(int[] arr){
while (mid <= high)
if (arr[mid]==0) {
swap(arr[low],arr[mid]);
low++ ; mid++ ;
}
else if(arr[mid]==1)
mid++;
else
swap(arr[mid],arr[high]);
high-- ;
}
}

			for(int i=0; i< arr.length;i++) {
				System.out.println(arr[i]);
			}
		}

}

#4

@drn192000_6c12623796658f98 I have already sent you the problems in your code and the corrected code also.

#5

while (mid <= high) what is &lt

#6

@drn192000_6c12623796658f98 I have no where mentioned &lt ?

#7

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