Java Array Exercises: Find contiguous subarray within a given array of integers which has the largest sum
Java Array: Exercise-66 with Solution
Write a Java program to find contiguous subarray within a given array of integers which has the largest sum.
In computer science, the maximum sum subarray problem is the task of finding a contiguous subarray with the largest sum, within a given one-dimensional array A[1...n] of numbers. Formally, the task is to find indices and with, such that the sum is as large as possible.
Example:
Input :
int[] A = {1, 2, -3, -4, 0, 6, 7, 8, 9}
Output:
The largest sum of contiguous sub-array: 30
Sample Solution:
Java Code:
import java.util.Arrays;
class solution
{
public static int largest_sum(int[] A)
{
int max_ele_val = 0;
int max_end = 0;
for (int i: A)
{
max_end = max_end + i;
max_end = Integer.max(max_end, 0);
max_ele_val = Integer.max(max_ele_val, max_end);
}
return max_ele_val;
}
public static void main(String[] args)
{
int[] A = {1, 2, -3, -4, 0, 6, 7, 8, 9};
System.out.println("\nOriginal array: "+Arrays.toString(A));
System.out.println("The largest sum of contiguous sub-array: " + largest_sum(A));
}
}
Sample Output:
Original array: [1, 2, -3, -4, 0, 6, 7, 8, 9] The largest sum of contiguous sub-array: 30
Flowchart:
Java Code Editor:
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Previous: Write a Java program to find maximum difference between two elements in a given array of integers such that smaller element appears before larger element.
Next: Write a Java program to find subarray which has the largest sum in a given circular array of integers.
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