Next Greater Element(Code)

#1

package NextGreaterElement;

public class Main {

    public static void main(String[] args) {

        int[] arr = {2, 1, 3, 8, 6, 7, 5};

        Stack<Integer> stack = new Stack<>(); //generic function
        for (int i = 0; i < arr.length; i++) {
            while (!stack.isEmpty() && arr[i] > stack.peek()) {
                int rv = stack.pop();
                System.out.println(rv + "->" + arr[i]);
            }
            stack.push(arr[i]);

        }


        while (!stack.isEmpty()) {
            int rv = stack.pop();
            System.out.println(rv + "->" + "-1");
        }
    }
}
#2

Hi @SanjeevKumarRay,
Corrected your solution and the corrected solution is here -


Corrections are commented

#3

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