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[mishin]

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• [ ] Коннект ES на Java

[mishin]

package com.example.elastic;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

public class SolutionTest {

    @Test
    public void testDeleteMiddle() {
        // Test case 1: List with odd number of nodes
        ListNode head1 = new ListNode(1);
        head1.next = new ListNode(2);
        head1.next.next = new ListNode(3);
        head1.next.next.next = new ListNode(4);
        head1.next.next.next.next = new ListNode(5);

        Solution solution = new Solution();
        ListNode result1 = solution.deleteMiddle(head1);

        Assertions.assertEquals("1 -> 2 -> 4 -> 5 -> null", getListAsString(result1));

        // Test case 2: List with even number of nodes
        ListNode head2 = new ListNode(1);
        head2.next = new ListNode(2);
        head2.next.next = new ListNode(3);
        head2.next.next.next = new ListNode(4);

        ListNode result2 = solution.deleteMiddle(head2);

        Assertions.assertEquals("1 -> 2 -> 3 -> 4 -> null", getListAsString(result2));

        // Test case 3: List with only one node
        ListNode head3 = new ListNode(1);

        ListNode result3 = solution.deleteMiddle(head3);

        Assertions.assertNull(result3);

        // Test case 4: Empty list
        ListNode head4 = null;

        ListNode result4 = solution.deleteMiddle(head4);

        Assertions.assertNull(result4);
    }

    private String getListAsString(ListNode head) {
        StringBuilder sb = new StringBuilder();
        ListNode current = head;
        while (current != null) {
            sb.append(current.val);
            if (current.next != null) {
                sb.append(" -> ");
            }
            current = current.next;
        }
        sb.append(" -> null");
        return sb.toString();
    }
}

[mishin]

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[mishin]

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