2540. Minimum Common Value

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class Solution {
public int getCommon(int[] nums1, int[] nums2) {
int i = 0, j = 0;
while (i < nums1.length && j < nums2.length) {
if (nums1[i] < nums2[j]) {
i++;
} else if (nums1[i] > nums2[j]) {
j++;
} else {
return nums1[i];
}
}

return -1;
}
}

References

2540. Minimum Common Value