AWK solution for week 3, part 2

1 files changed, 33 insertions, 0 deletions

diff --git a/challenge-003/abigail/awk/ch-2.awk b/challenge-003/abigail/awk/ch-2.awk
new file mode 100644
index 0000000000..1689ce668f
--- /dev/null
+++ b/challenge-003/abigail/awk/ch-2.awk
@@ -0,0 +1,33 @@
+#!/usr/bin/awk
+
+#
+# See ../README.md
+#
+
+#
+# Run as: awk -f ch-2.awk < input-file
+#
+
+{
+    row [1] = 1    # 0'th row
+    printf "%d\n", row [1]
+
+    for (r = 1; r <= $0; r ++) {
+        #
+        # Calculate the new row, and print it
+        #
+        for (i = 1; i <= length (row) + 1; i ++) {
+            new [i] = (i == 1                ? 0 : row [i - 1]) +\
+                      (i == length (row) + 1 ? 0 : row [i])
+            printf ("%s%d", i == 1 ? "" : " ", new [i])
+        }
+        printf "\n";
+
+        #
+        # Copy the new row to the current row
+        #
+        for (i = 1; i <= length (new); i ++) {
+            row [i] = new [i]
+        }
+    }
+}