diff options
| author | crupest <crupest@outlook.com> | 2020-07-15 16:52:08 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2020-07-15 16:52:08 +0800 |
| commit | 357142db7dddeba12d95ade496abf0e9732bfc1d (patch) | |
| tree | c4c9b687de61b9b80f23cd5f8e3eea0a88c14652 /works/solutions/cpp | |
| parent | 200e723d8e6daf7f8318e363cc96843d7807cbe5 (diff) | |
| download | crupest-357142db7dddeba12d95ade496abf0e9732bfc1d.tar.gz crupest-357142db7dddeba12d95ade496abf0e9732bfc1d.tar.bz2 crupest-357142db7dddeba12d95ade496abf0e9732bfc1d.zip | |
import(solutions): Add problem 2.
Diffstat (limited to 'works/solutions/cpp')
| -rw-r--r-- | works/solutions/cpp/2.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/works/solutions/cpp/2.cpp b/works/solutions/cpp/2.cpp new file mode 100644 index 0000000..cb954ae --- /dev/null +++ b/works/solutions/cpp/2.cpp @@ -0,0 +1,75 @@ +struct ListNode
+{
+ int val;
+ ListNode *next;
+ ListNode(int x) : val(x), next(NULL) {}
+};
+
+class Solution
+{
+public:
+ ListNode *addTwoNumbers(ListNode *l1, ListNode *l2)
+ {
+ ListNode *result;
+ ListNode *tail;
+ int carry = 0;
+
+ {
+ int sum = l1->val + l2->val;
+ if (sum > 9)
+ {
+ carry = 1;
+ sum -= 10;
+ }
+
+ result = new ListNode(sum);
+ tail = result;
+
+ l1 = l1->next;
+ l2 = l2->next;
+ }
+
+ while (l1 || l2)
+ {
+ int sum = (l1 ? l1->val : 0) + (l2 ? l2->val : 0) + carry;
+ if (sum > 9)
+ {
+ carry = 1;
+ sum -= 10;
+ }
+ else
+ {
+ carry = 0;
+ }
+ tail->next = new ListNode(sum);
+ tail = tail->next;
+
+ if (l1)
+ l1 = l1->next;
+ if (l2)
+ l2 = l2->next;
+ }
+
+ if (carry)
+ {
+ tail->next = new ListNode(1);
+ }
+
+ return result;
+ }
+};
+
+int main()
+{
+ ListNode *l1 = new ListNode(2);
+ l1->next = new ListNode(4);
+ l1->next = new ListNode(3);
+
+ ListNode *l2 = new ListNode(5);
+ l2->next = new ListNode(6);
+ l2->next = new ListNode(4);
+
+ ListNode *result = Solution{}.addTwoNumbers(l1, l2);
+
+ return 0;
+}
|