trantorLiu
diff --git a/‎_experimental/datetime/easter_date.js renamed to ‎_workbench/calendar/easter_date.js b/‎_experimental/datetime/easter_date.js renamed to ‎_workbench/calendar/easter_date.js
diff --git a/‎_workbench/strings/similar_text.js
Lines changed: 40 additions & 0 deletions b/‎_workbench/strings/similar_text.js
Lines changed: 40 additions & 0 deletions
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+function similar_text (first, second) {
+    /*
+     * This is a direct port from PHP source code with a few modifications. May be buggy.
+     * This function still needs to be checked and unit tested.
+     * Other goals are to switch from recursive to iterative approach
+     *
+     * Original by: Rafał Kukawski
+     */
+    var pos1 = 0, pos2 = 0, max = 0,
+        firstLength = first.length, secondLength = second.length,
+        p, q, l, sum;
+    
+    max = 0;
+    
+    for (p = 0; p < firstLength; p++) {
+        for(q = 0; q < secondLength; q++) {
+            for (l = 0; (p + l < firstLength) && (q + l < secondLength) && (first.charAt(p + l) === second.charAt(q + l)); l++);
+            if (l > max) {
+                max = l;
+                pos1 = p;
+                pos2 = q;
+            }
+        }
+    }
+    
+    sum = max;
+    
+    if (sum) {
+        if (pos1 && pos2) {
+            sum += similar_text(first.substr(0, pos2), second.substr(0, pos2));
+        }
+        
+        if ((pos1 + max < firstLength) && (pos2 + max < secondLength)) {
+            sum += similar_text(first.substr(pos1 + max, firstLength - pos1 - max), second.substr(pos2 + max, secondLength - pos2 - max));
+        }
+    }
+    
+    return sum;
+}
+