Question

IN JAVA *public class LabProgram Write a program that reads two lists of integers from input into two arrays and outputs the sum of multiplying the corresponding list items. The program first reads an integer representing the length of each list, followed by two lists of integers.

Ex: If the input is:

3
1 2 3
3 2 1
the program calculates (1 * 3) + (2 * 2) + (3 * 1) and outputs

10
Ex: If the input is:

4
2 3 4 5
1 1 1 1
the program calculates (2 * 1) + (3 * 1) + (4 * 1) + (5 * 1) and outputs

14

Answer 1

import java.util.*;

class LabProgram {

public static void main(String[] args) {

Scanner s = new Scanner(System.in);

int length = s.nextInt();

int[][] list = new int[2][length];

int total=0;

for(int i=0;i<2;i++) {

for(int j=0;j<length;j++) {

list[i][j] = s.nextInt();

}

}

for(int i=0;i<length;i++) {

total+=(list[0][i])*(list[1][i]);

}

System.out.println("Total:"+total);

}

}