g0901_1000.s0930_binary_subarrays_with_sum

Class Solution

java.lang.Object

g0901_1000.s0930_binary_subarrays_with_sum.Solution

public class Solution
extends 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 and Description
Solution()

Method Summary

Modifier and Type	Method and 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 Detail

Solution

public Solution()

Method Detail

numSubarraysWithSum

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