|1845|[Seat Reservation Manager](https://leetcode.com/problems/seat-reservation-manager/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1845.java)||Medium|Heap, Design|

|1844|[Replace All Digits with Characters](https://leetcode.com/problems/replace-all-digits-with-characters/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1844.java)||Easy|String|

|1837|[Sum of Digits in Base K](https://leetcode.com/problems/sum-of-digits-in-base-k/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1837.java)||Easy|Math, Bit Manipulation|

|1836|[Remove Duplicates From an Unsorted Linked List](https://leetcode.com/problems/remove-duplicates-from-an-unsorted-linked-list/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1836.java)||Medium|HashTable, LinkedList|

|1833|[Maximum Ice Cream Bars](https://leetcode.com/problems/maximum-ice-cream-bars/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1833.java)||Medium|Array, Sort|

|1832|[Check if the Sentence Is Pangram](https://leetcode.com/problems/check-if-the-sentence-is-pangram/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1832.java)||Easy|String|

|1829|[Maximum XOR for Each Query](https://leetcode.com/problems/maximum-xor-for-each-query/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1829.java)||Medium|Bit Manipulation|

packagecom.fishercoder.solutions;

importcom.fishercoder.common.classes.ListNode;

importjava.util.HashMap;

importjava.util.Map;

publicclass_1836 {

publicstaticclassSolution1 {

publicListNodedeleteDuplicatesUnsorted(ListNodehead) {

Map<Integer,Integer>map =newHashMap<>();

ListNodetmp =head;

while (tmp !=null) {

map.put(tmp.val,map.getOrDefault(tmp.val,0) +1);

tmp =tmp.next;

}

ListNodepre =newListNode(-1);

tmp =pre;

while (head !=null) {

if (map.get(head.val) ==1) {

tmp.next =newListNode(head.val);

tmp =tmp.next;

}

head =head.next;

}

returnpre.next;

}

}

}

packagecom.fishercoder;

importcom.fishercoder.common.utils.LinkedListUtils;

importcom.fishercoder.solutions._1836;

importorg.junit.BeforeClass;

importorg.junit.Test;

importstaticorg.junit.Assert.assertEquals;

publicclass_1836Test {

privatestatic_1836.Solution1solution1;

publicstaticvoidsetup() {

solution1 =new_1836.Solution1();

}

publicvoidtest1() {

assertEquals(LinkedListUtils.contructLinkedList(newint[]{1,3}),solution1.deleteDuplicatesUnsorted(LinkedListUtils.contructLinkedList(newint[]{1,2,3,2})));

}

publicvoidtest2() {

assertEquals(LinkedListUtils.contructLinkedList(newint[]{}),solution1.deleteDuplicatesUnsorted(LinkedListUtils.contructLinkedList(newint[]{2,1,1,2})));

}

publicvoidtest3() {

assertEquals(LinkedListUtils.contructLinkedList(newint[]{1,4}),solution1.deleteDuplicatesUnsorted(LinkedListUtils.contructLinkedList(newint[]{3,2,2,1,3,2,4})));

}

}