Pascal's triangle

other/pascal-triangle.js

@@ -0,0 +1,26 @@
+'use strict';
+
+import _ from '../utils';
+
+let input = _.args.numbers()[0];
+
+let pascal = [];
+
+for (let i = 0; i < input; i++) {
+  let past = pascal[i - 1];
+  let n = new Array(i + 1);
+  n[0] = 1;
+  n[i] = 1;
+
+  for (let j = 1; j < i; j++) {
+    n[j] = past[j - 1] + past[j];
+  }
+  pascal.push(n);
+}
+
+
+let single = pascal.reduce((a, b) => {
+  return a.concat(b);
+}, []);
+
+_.log(single);