Data commit

Task/Abbreviations-automatic/JavaScript/abbreviations-automatic-1.js

@@ -0,0 +1,29 @@
+Array.prototype.hasDoubles = function() {
+  let arr = this.slice();
+  while (arr.length > 1) {
+    let cur = arr.shift();
+    if (arr.includes(cur)) return true;
+  }
+  return false;
+}
+
+function getMinAbbrLen(arr) {
+  if (arr.length <= 1) return '';
+  let testArr = [],
+      len = 0, i;
+  do {
+    len++;
+    for (i = 0; i < arr.length; i++)
+      testArr[i] = arr[i].substr(0, len);
+  } while (testArr.hasDoubles());
+  return len;
+}
+
+// testing
+for (let x = 0; x < list.length; x++) {
+  let days = list[x].split(' '),
+      l    = getMinAbbrLen(days);
+  for (let y = 0; y < days.length; y++)
+    days[y] = days[y].substring(0, l);
+  document.write(`<p>(${l}): ${days.join('. ')}.</p>`);
+}