image.png
java return
相当于声明之后就返回了
返回字符串 return new String(s);
返回数组 return new int[]{-1, -1};
C++
return {low + 1, high + 1};
应该也是返回一个数组
class Solution {
public int[] twoSum(int[] numbers, int target) {
int low = 0, high = numbers.length - 1;
while (low < high) {
int sum = numbers[low] + numbers[high];
if (sum == target) {
return new int[]{low + 1, high + 1};
} else if (sum < target) {
++low;
} else {
--high;
}
}
return new int[]{-1, -1};
}
}
class Solution {
public:
vector<int> twoSum(vector<int>& numbers, int target) {
int low = 0, high = numbers.size() - 1;
while (low < high) {
int sum = numbers[low] + numbers[high];
if (sum == target) {
return {low + 1, high + 1};
} else if (sum < target) {
++low;
} else {
--high;
}
}
return {-1, -1};
}
};
