LeetCode-in-Java
2540. Minimum Common Value
Easy
Given two integer arrays nums1 and nums2, sorted in non-decreasing order, return the minimum integer common to both arrays. If there is no common integer amongst nums1 and nums2, return -1.
Note that an integer is said to be common to nums1 and nums2 if both arrays have at least one occurrence of that integer.
Example 1:
Input: nums1 = [1,2,3], nums2 = [2,4]
Output: 2
Explanation: The smallest element common to both arrays is 2, so we return 2.
Example 2:
Input: nums1 = [1,2,3,6], nums2 = [2,3,4,5]
Output: 2
Explanation: There are two common elements in the array 2 and 3 out of which 2 is the smallest, so 2 is returned.
Constraints:
1 <= nums1.length, nums2.length <= 1051 <= nums1[i], nums2[j] <= 109- Both
nums1andnums2are sorted in non-decreasing order.
Solution
public class Solution {
public int getCommon(int[] nums1, int[] nums2) {
int i = 0;
int j = 0;
if (nums1[0] > nums2[nums2.length - 1] || nums1[nums1.length - 1] < nums2[0]) {
return -1;
}
while (i < nums1.length && j < nums2.length) {
if (nums1[i] == nums2[j]) {
return nums1[i];
}
if (nums1[i] > nums2[j]) {
j++;
} else {
i++;
}
}
return -1;
}
}