Package g1401_1500.s1477_find_two_non_overlapping_sub_arrays_each_with_target_sum

Class Solution

java.lang.Object
g1401_1500.s1477_find_two_non_overlapping_sub_arrays_each_with_target_sum.Solution
public class Solution extends java.lang.Object
1477 - Find Two Non-overlapping Sub-arrays Each With Target Sum.

Medium

You are given an array of integers arr and an integer target.

You have to find two non-overlapping sub-arrays of arr each with a sum equal target. There can be multiple answers so you have to find an answer where the sum of the lengths of the two sub-arrays is minimum.

Return the minimum sum of the lengths of the two required sub-arrays, or return -1 if you cannot find such two sub-arrays.

Example 1:

Input: arr = [3,2,2,4,3], target = 3

Output: 2

Explanation: Only two sub-arrays have sum = 3 ([3] and [3]). The sum of their lengths is 2.

Example 2:

Input: arr = [7,3,4,7], target = 7

Output: 2

Explanation: Although we have three non-overlapping sub-arrays of sum = 7 ([7], [3,4] and [7]), but we will choose the first and third sub-arrays as the sum of their lengths is 2.

Example 3:

Input: arr = [4,3,2,6,2,3,4], target = 6

Output: -1

Explanation: We have only one sub-array of sum = 6.

Constraints:

  • 1 <= arr.length <= 105
  • 1 <= arr[i] <= 1000
  • 1 <= target <= 108

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    minSumOfLengths(int[] arr, int target)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • minSumOfLengths

      public int minSumOfLengths(int[] arr, int target)