Package g0901_1000.s0930_binary_subarrays_with_sum

Class Solution

java.lang.Object
g0901_1000.s0930_binary_subarrays_with_sum.Solution
public class Solution extends java.lang.Object
930 - Binary Subarrays With Sum.

Medium

Given a binary array nums and an integer goal, return the number of non-empty subarrays with a sum goal.

A subarray is a contiguous part of the array.

Example 1:

Input: nums = [1,0,1,0,1], goal = 2

Output: 4

Explanation: The 4 subarrays are bolded and underlined below:

[1,0,1 ,0,1]

[1,0,1,0 ,1]

[1, 0,1,0,1 ]

[1,0, 1,0,1 ]

Example 2:

Input: nums = [0,0,0,0,0], goal = 0

Output: 15

Constraints:

  • 1 <= nums.length <= 3 * 104
  • nums[i] is either 0 or 1.
  • 0 <= goal <= nums.length

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    numSubarraysWithSum(int[] nums, int goal)
     

    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

    • numSubarraysWithSum

      public int numSubarraysWithSum(int[] nums, int goal)