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56 lines (47 loc) · 990 Bytes
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Copy pathAddTwoNumbers.cc
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56 lines (47 loc) · 990 Bytes
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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
#include <math.h>
#include <memory.h>
#include <sstream>
#include <iostream>
#include <vector>
using namespace std;
struct ListNode {
int val;
ListNode *next;
ListNode(int x) : val(x), next(NULL) {}
};
class Solution {
public:
ListNode *addTwoNumbers(ListNode *l1, ListNode *l2) {
int carry = 0;
ListNode *tail = new ListNode(0);
ListNode *ptr = tail;
while (l1 != NULL || l2 != NULL) {
int val1 = 0;
if (l1 != NULL) {
val1 = l1->val;
l1 = l1->next;
}
int val2 = 0;
if (l2 != NULL) {
val2 = l2->val;
l2 = l2->next;
}
int tmp = val1 + val2 + carry;
ptr->next = new ListNode(tmp % 10);
carry = tmp / 10;
ptr = ptr->next;
}
if (carry == 1) {
ptr->next = new ListNode(1);
}
return tail->next;
}
};
int main(int argc, char const *argv[]) {
/* code */
return 0;
}