Initial commit

2/2.cpp

@@ -0,0 +1,65 @@
+#include <cstdint>
+
+namespace {
+
+struct ListNode {
+    int val;
+    ListNode *next;
+    ListNode() : val(0), next(nullptr) {}
+    ListNode(int x) : val(x), next(nullptr) {}
+    ListNode(int x, ListNode *next) : val(x), next(next) {}
+};
+
+class Solution {
+    auto getNum(ListNode* l1, ListNode* l2) -> ListNode* {
+        ListNode *head, *prev, *curr;
+
+        int v_ume = 0;
+
+        while (l1 || l2) {
+            int a = 0, b = 0;
+            if (l1) {
+                a = l1->val;
+                l1 = l1->next;
+            }
+            if (l2) {
+                b = l2->val;
+                l2 = l2->next;
+            }
+
+            int sum = a + b + v_ume;
+
+            int x = sum % 10;
+            v_ume = sum / 10;
+
+            curr = new ListNode(x);
+            if (!head) {
+                head = curr;
+            } else {
+                prev->next = curr;
+            }
+            prev = curr;
+        }
+
+        if (v_ume != 0) {
+            curr = new ListNode(v_ume);
+            prev->next = curr;
+        }
+
+        return head;
+    }
+   
+public:
+    ListNode* addTwoNumbers(ListNode* l1, ListNode* l2) {
+        return getNum(l1, l2);
+    }
+};
+
+}
+
+#include <gtest/gtest.h>
+
+TEST(P2, 1) {
+    Solution s;
+    auto res = s.addTwoNumbers(nullptr, nullptr);
+}