Added the Other algorithm category

Other/DateToDay.js

@@ -0,0 +1,61 @@
+/*
+                    DateToDay Method
+                    ----------------
+    The DateToDay method takes a date in string format and returns
+    the name of a day. The approach behind this method is very
+    simple, we first take a string date and check whether their date
+    is valid or not, if the date is valid then we pass this date
+    to the predefined date method and get the date of the day We do
+    it and find the name of the day, after that give the name of
+    the day to the user, if the date is wrong, then tell the user
+    that the given date is not valid.
+*/
+
+const monthsNameList = { // create a monthsNameList for easy to use.
+  1: 'January',
+  2: 'February',
+  3: 'March',
+  4: 'April',
+  5: 'May',
+  6: 'June',
+  7: 'July',
+  8: 'August',
+  9: 'September',
+  10: 'October',
+  11: 'November',
+  12: 'December'
+}
+
+// show the week day in a number : Sunday - Saturday => 0 - 6
+const daysNameList = { // weeks-day
+  0: 'Sunday',
+  1: 'Monday',
+  2: 'Tuesday',
+  3: 'Wednesday',
+  4: 'Thursday',
+  5: 'Friday',
+  6: 'Saturday'
+}
+
+const DateToDay = (date) => {
+  // firstly, check that input is a string or not.
+  if (typeof date !== 'string') {
+    return new TypeError('Argument is not a string.')
+  }
+  // extarct the date
+  const [day, month, year] = date.split('/').map((x) => Number(x))
+  // check the data are valid or not.
+  if (day > 31 || month > 12) {
+    return new TypeError('Date is not valid.')
+  }
+  // create a base date for finding the actuale date.
+  const baseDate = `${monthsNameList[month]} ${day}, ${year} 23:15:30`
+  // use the Date class and make an object use of the base date.
+  const finalDate = new Date(baseDate)
+  // call a getDay() method of Date() class.
+  const finalDay = finalDate.getDay()
+  // return the output.
+  return daysNameList[finalDay]
+}
+
+module.exports = DateToDay