Data commit

Task/Multisplit/Swift/multisplit.swift

@@ -0,0 +1,36 @@
+extension String {
+  func multiSplit(on seps: [String]) -> ([Substring], [(String, (start: String.Index, end: String.Index))]) {
+    var matches = [Substring]()
+    var matched = [(String, (String.Index, String.Index))]()
+    var i = startIndex
+    var lastMatch = startIndex
+
+    main: while i != endIndex {
+      for sep in seps where self[i...].hasPrefix(sep) {
+        if i > lastMatch {
+          matches.append(self[lastMatch..<i])
+        } else {
+          matches.append("")
+        }
+
+        lastMatch = index(i, offsetBy: sep.count)
+        matched.append((sep, (i, lastMatch)))
+        i = lastMatch
+
+        continue main
+      }
+
+      i = index(i, offsetBy: 1)
+    }
+
+    if i > lastMatch {
+      matches.append(self[lastMatch..<i])
+    }
+
+    return (matches, matched)
+  }
+}
+
+let (matches, matchedSeps) = "a!===b=!=c".multiSplit(on: ["==", "!=", "="])
+
+print(matches, matchedSeps.map({ $0.0 }))