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Solution.java
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class Solution {
public List<Integer> majorityElement(int[] nums) {
int n1 = 0, n2 = 0;
int m1 = 0, m2 = 1;
for (int m : nums) {
if (m == m1) {
++n1;
} else if (m == m2) {
++n2;
} else if (n1 == 0) {
m1 = m;
++n1;
} else if (n2 == 0) {
m2 = m;
++n2;
} else {
--n1;
--n2;
}
}
List<Integer> ans = new ArrayList<>();
n1 = 0;
n2 = 0;
for (int m : nums) {
if (m == m1) {
++n1;
} else if (m == m2) {
++n2;
}
}
if (n1 > nums.length / 3) {
ans.add(m1);
}
if (n2 > nums.length / 3) {
ans.add(m2);
}
return ans;
}
}