isSequencedArray.java

package mumTestPackage;

import static org.junit.jupiter.api.Assertions.*;

import org.junit.jupiter.api.Test;

class MumTest43 {

	@Test
	void test() {
		 	System.out.println(isSequencedArray(new int[]{2, 2, 3, 4, 4, 4, 5}, 2, 5));
	        System.out.println(isSequencedArray(new int[]{2, 2, 3, 5, 5, 5}, 2, 5));
	        System.out.println(isSequencedArray(new int[]{0, 2, 2, 3, 3}, 2, 3));
	        System.out.println(isSequencedArray(new int[]{1, 1, 3, 2, 2, 4}, 1, 4));
	        System.out.println(isSequencedArray(new int[]{1, 2, 3, 4, 5}, 1, 5));
	        System.out.println(isSequencedArray(new int[]{1, 3, 4, 2, 5}, 1, 5));
	        System.out.println(isSequencedArray(new int[]{-5, -5, -4, -4, -4, -3, -3, -2, -2, -2}, -5, -2));
	        System.out.println(isSequencedArray(new int[]{0, 1, 2, 3, 4, 5}, 1, 5));
	        System.out.println(isSequencedArray(new int[]{1, 2, 3, 4}, 1, 5));
	        System.out.println(isSequencedArray(new int[]{1, 2, 5}, 1, 5));
	        System.out.println(isSequencedArray(new int[]{5, 4, 3, 2, 1}, 1, 5));
	}
	
	int isSequencedArray(int[ ] a, int m, int n) {
		if (a.length <= 1 || a[0] != m || a[a.length - 1] != n || m > n)
            return 0;

		for (int i = 0; i < a.length-1; i++) {

			if(!(a[i+1] == a[i] + 1 || a[i+1] == a[i])) {
				return 0;
			}
		}

		return 1;
		
	}

}