Merge pull request neetcode-gh#2164 from a93a/main

Create 0560-subarray-sum-equals-k.kt

Author: a93a

kotlin/0560-subarray-sum-equals-k.kt

@@ -0,0 +1,14 @@
+class Solution {
+    fun subarraySum(nums: IntArray, k: Int): Int {
+        val hm = hashMapOf(0 to 1)
+        var res = 0
+        var sum = 0
+        nums.forEach {
+            sum += it
+            val prefix = sum - k
+            res += hm.getOrDefault(prefix, 0)
+            hm[sum] = hm.getOrDefault(sum, 0) + 1
+        }
+        return res
+    }
+}