Create 2086-minimum-number-of-buckets-required-to-collect-rainwater-from-houses.js

Author: everthis

2086-minimum-number-of-buckets-required-to-collect-rainwater-from-houses.js

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+/**
+ * @param {string} street
+ * @return {number}
+ */
+var minimumBuckets = function(street) {
+  const arr = street.split(''), n = arr.length
+  let res = 0
+  for(let i = 0; i < arr.length; i++) {
+    if(arr[i] === 'H') {
+      if(i > 0 && arr[i - 1] === 'B') continue
+      if(i < n - 1 && arr[i + 1] === '.') arr[i + 1] = 'B', res++
+      else if(i > 0 && arr[i - 1] === '.') arr[i - 1] = 'B', res++
+      else return -1
+    }
+  }
+  return res
+};