--- /dev/null
+var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var Pair = function () {
+ function Pair(a, b) {
+ _classCallCheck(this, Pair);
+
+ this.a = a;
+ this.b = b;
+ }
+
+ _createClass(Pair, [{
+ key: 'getFirst',
+ value: function getFirst() {
+ return this.a;
+ }
+ }, {
+ key: 'getSecond',
+ value: function getSecond() {
+ return this.b;
+ }
+ }, {
+ key: 'toString',
+ value: function toString() {
+ var str = '<' + this.a + ',' + this.b + '>';
+ return str;
+ }
+ }]);
+
+ return Pair;
+}();
\ No newline at end of file