Initial data commit

Task/Semordnilap/Nim/semordnilap.nim

@@ -0,0 +1,16 @@
+import strutils, sequtils, sets, algorithm
+
+proc reversed(s: string): string =
+  result = newString(s.len)
+  for i, c in s:
+    result[s.high - i] = c
+
+let
+  words = readFile("unixdict.txt").strip().splitLines()
+  wordset = words.toHashSet
+  revs = words.map(reversed)
+var pairs = zip(words, revs).filterIt(it[0] < it[1] and it[1] in wordset)
+
+echo "Total number of semordnilaps: ", pairs.len
+pairs = pairs.sortedByIt(it[0].len)
+echo pairs[^5..^1]