Find the missing element from an array

Pandiyan Mani

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Sep 28, 2022

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class HelloWorld {
    public static void main(String[] args) {
        int numbers[] = {1,2,3,4,6,7};
        int n = numbers.length;
        int sum = ((n+1) * (n+2)) / 2;
        for(int i=0;i<n;i++) {
            sum -= numbers[i];
        }
        System.out.println("Result--"+sum);
    }
}