Initial data commit

Task/Pascals-triangle/TypeScript/pascals-triangle.ts

@@ -0,0 +1,31 @@
+// Pascal's triangle
+
+function pascal(n: number): void {
+  // Display the first n rows of Pascal's triangle
+  // if n<=0 then nothing is displayed
+  var ld: number[] = new Array(40); // Old
+  var nw: number[] = new Array(40); // New
+  for (var row = 0; row < n; row++) {
+    nw[0] = 1;
+    for (var i = 1; i <= row; i++)
+      nw[i] = ld[i - 1] + ld[i];
+    process.stdout.write(" ".repeat((n - row - 1) * 2));
+    for (var i = 0; i <= row; i++) {
+      if (nw[i] < 100)
+        process.stdout.write(" ");
+      process.stdout.write(nw[i].toString());
+      if (nw[i] < 10)
+        process.stdout.write(" ");
+      process.stdout.write(" ");
+    }
+    nw[row + 1] = 0;
+    // We do not copy data from nw to ld
+    // but we work with references.
+    var tmp = ld;
+    ld = nw;
+    nw = tmp;
+    console.log();
+  }
+}
+
+pascal(13);