JAVA
java
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class HelloWorld {
static int singleNumber(int[] nums) {
int result = 0;
for(int i : nums) {
result = result ^ i; //Here is is
}
return result;
}
public static void main(String[] args) {
int[] nums={1,2,4,1,2};
System.out.println(singleNumber(nums));
}
}
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OUTPUT
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