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 Object

930 - Binary Subarrays With Sum.<p>Medium</p> <p>Given a binary array <code>nums</code> and an integer <code>goal</code>, return <em>the number of non-empty <strong>subarrays</strong> with a sum</em> <code>goal</code>.</p> <p>A <strong>subarray</strong> is a contiguous part of the array.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> nums = [1,0,1,0,1], goal = 2</p> <p><strong>Output:</strong> 4</p> <p><strong>Explanation:</strong> The 4 subarrays are bolded and underlined below:</p> <p>[<strong>1,0,1</strong> ,0,1]</p> <p>[<strong>1,0,1,0</strong> ,1]</p> <p>[1, <strong>0,1,0,1</strong> ]</p> <p>[1,0, <strong>1,0,1</strong> ]</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> nums = [0,0,0,0,0], goal = 0</p> <p><strong>Output:</strong> 15</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= nums.length <= 3 * 10⁴</code></li> <li><code>nums[i]</code> is either <code>0</code> or <code>1</code>.</li> <li><code>0 <= goal <= nums.length</code></li> </ul>

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)