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Java-based LeetCode algorithm problem solutions, regularly updated
package g2501_2600.s2568_minimum_impossible_or;
// #Medium #Array #Bit_Manipulation #Brainteaser
// #2023_08_21_Time_14_ms_(81.48%)_Space_62.4_MB_(6.17%)
import java.util.HashSet;
import java.util.Set;
public class Solution {
public int minImpossibleOR(int[] nums) {
Set set = new HashSet<>();
for (int n : nums) {
if (n == 1 || (n & 1) == 0) {
set.add(n);
}
}
int powerOfTwo = 1;
while (true) {
if (!set.contains(powerOfTwo)) {
return powerOfTwo;
}
powerOfTwo *= 2;
}
}
}