diff --git a/src/main/java/com/fishercoder/solutions/_1290.java b/src/main/java/com/fishercoder/solutions/_1290.java
index 6840f00738..8e3c6c55a5 100644
--- a/src/main/java/com/fishercoder/solutions/_1290.java
+++ b/src/main/java/com/fishercoder/solutions/_1290.java
@@ -13,4 +13,15 @@ public int getDecimalValue(ListNode head) {
return Integer.parseInt(sb.toString(), 2);
}
}
+ public static class Solution2 {
+ public int getDecimalValue(ListNode head) {
+ int sum = 0;
+ while (head != null) {
+ sum *= 2;
+ sum += head.val;
+ head = head.next;
+ }
+ return sum;
+ }
+ }
}
diff --git a/src/test/java/com/fishercoder/_1290Test.java b/src/test/java/com/fishercoder/_1290Test.java
index 7023d9ec73..fb2878a21f 100644
--- a/src/test/java/com/fishercoder/_1290Test.java
+++ b/src/test/java/com/fishercoder/_1290Test.java
@@ -11,11 +11,13 @@
public class _1290Test {
private static _1290.Solution1 solution1;
+ private static _1290.Solution2 solution2;
private static ListNode head;
@BeforeClass
public static void setup() {
solution1 = new _1290.Solution1();
+ solution2 = new _1290.Solution2();
}
@Test
@@ -23,5 +25,9 @@ public void test1() {
head = ListNode.createSinglyLinkedList(Arrays.asList(1, 0, 1));
assertEquals(5, solution1.getDecimalValue(head));
}
-
+ @Test
+ public void test2() {
+ head = ListNode.createSinglyLinkedList(Arrays.asList(1, 1, 1));
+ assertEquals(7, solution2.getDecimalValue(head));
+ }
}
\ No newline at end of file
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