Data commit

Task/Tokenize-a-string-with-escaping/Java/tokenize-a-string-with-escaping.java

@@ -0,0 +1,44 @@
+import java.util.*;
+
+public class TokenizeStringWithEscaping {
+
+    public static void main(String[] args) {
+        String sample = "one^|uno||three^^^^|four^^^|^cuatro|";
+        char separator = '|';
+        char escape = '^';
+
+        System.out.println(sample);
+        try {
+            System.out.println(tokenizeString(sample, separator, escape));
+        } catch (Exception e) {
+            System.out.println(e);
+        }
+    }
+
+    public static List<String> tokenizeString(String s, char sep, char escape)
+            throws Exception {
+        List<String> tokens = new ArrayList<>();
+        StringBuilder sb = new StringBuilder();
+
+        boolean inEscape = false;
+        for (char c : s.toCharArray()) {
+            if (inEscape) {
+                inEscape = false;
+            } else if (c == escape) {
+                inEscape = true;
+                continue;
+            } else if (c == sep) {
+                tokens.add(sb.toString());
+                sb.setLength(0);
+                continue;
+            }
+            sb.append(c);
+        }
+        if (inEscape)
+            throw new Exception("Invalid terminal escape");
+
+        tokens.add(sb.toString());
+
+        return tokens;
+    }
+}