Apply fixes from comments to "Hackerrank solutions: Python 3 and Perl 6 (part 1)"

1 files changed, 16 insertions, 3 deletions

diff --git a/_posts/2018-09-13-hackerrank-solutions-python3-and-perl6-part-1.adoc b/_posts/2018-09-13-hackerrank-solutions-python3-and-perl6-part-1.adoc
index 2c06ab0..3c6e380 100644
--- a/_posts/2018-09-13-hackerrank-solutions-python3-and-perl6-part-1.adoc
+++ b/_posts/2018-09-13-hackerrank-solutions-python3-and-perl6-part-1.adoc
@@ -104,6 +104,13 @@ sub simple-array-sum (@ar) {
 }
 ----
 
+[NOTE]
+====
+After publishing this post I have learned that both Python 3 and Perl 6 have a
+`.sum` function that can also be called on the array, simplifying the code in
+both languages.
+====
+
 === Compare the Triplets
 
 This challenge provides you with 2 lists of 3 elements each. The lists should
@@ -134,7 +141,7 @@ had to use `+= 1` instead.
 [source,perl6]
 ----
 sub compare-triplets (@a, @b) {
-    @scores = [0, 0];
+    my @scores = [0, 0];
 
     for ^3 {
         @scores[0]++ if @a[$_] > @b[$_];
@@ -151,6 +158,12 @@ Both of these loops could use a `continue` (or `next` in Perl 6) to skip the
 second `if` in case the first `if` was true, but for readability I chose not
 to.
 
+[NOTE]
+====
+After publishing this post I learned that Python 3 also supports the <NAME>
+syntax, just like Perl 6, so I could've used this in Python 3 as well.
+====
+
 === A Very Big Sum
 
 In this challenge, you need to write the function body for `aVeryBigSum`, which
@@ -270,8 +283,8 @@ left-hand side up to the right hand side, inclusive.
 
 [source,perl6]
 ----
-sub staircaise ($n) {
-    for 1..($n+1) -> $i {
+sub staircase ($n) {
+    for 1..$n -> $i {
         print(" ") for 0..($n - $i);
         print("#") for ^$i;
         print("\n");