Merge pull request #9 from theforestvn88/august

2053

Author: theforestvn88

2001-2100/2053_kth_distinct_string_in_an_array.rb

@@ -0,0 +1,9 @@
+# @param {String[]} arr
+# @param {Integer} k
+# @return {String}
+def kth_distinct(arr, k)
+ counter = Hash.new(0)
+ arr.each { |x| counter[x] += 1 }
+ # hash in ruby keep the order of the input entries
+ counter.entries.filter { |k, v| v == 1 }[k-1]&.first || ''
+end