- Added solutions by Ulrich Rieke.

22 files changed, 1524 insertions, 1166 deletions

diff --git a/challenge-159/ulrich-rieke/cpp/ch-1.cpp b/challenge-159/ulrich-rieke/cpp/ch-1.cpp
new file mode 100644
index 0000000000..fd619c7af4
--- /dev/null
+++ b/challenge-159/ulrich-rieke/cpp/ch-1.cpp
@@ -0,0 +1,35 @@
+#include <vector>
+#include <iostream>
+#include <numeric>
+#include <utility>
+#include <cstdlib>
+#include <algorithm>
+
+int main( int argc, char * argv[] ) {
+  int n = std::atoi( argv[1] ) ;
+  while ( n <= 0 ) {
+      std::cout << "Please enter an integer greater than 0!\n" ;
+      std::cin >> n ;
+  }
+  std::vector<int> numerators( n  ) ;
+  std::vector<int> denominators( n + 1 ) ;
+  std::iota( numerators.begin( ) , numerators.end( ) , 1) ;
+  std::iota( denominators.begin( ) , denominators.end( ) , 0 ) ;
+  std::vector<std::pair<int, int>> fractions ;
+  fractions.push_back( std::make_pair( 0 , 1 ) ) ;
+  for ( int i : numerators ) {
+      for ( int j : denominators ) {
+    if ( i < j && (std::lcm( i , j ) == i * j)) {
+        fractions.push_back( std::make_pair( i , j )) ;
+    }
+      }
+  }
+  std::sort( fractions.begin( ) , fractions.end( ) ,
+    []( const auto & a, const auto & b ) { return
+    (static_cast<double>(a.first) / static_cast<double>(a.second)) <
+    (static_cast<double>(b.first) / static_cast<double>(b.second));} );
+  for ( auto & p : fractions )
+      std::cout << p.first << '/' << p.second << ", " ;
+  std::cout << "1/1" << std::endl ;
+  return 0 ;
+}
diff --git a/challenge-159/ulrich-rieke/cpp/ch-2.cpp b/challenge-159/ulrich-rieke/cpp/ch-2.cpp
new file mode 100644
index 0000000000..85ae8382fe
--- /dev/null
+++ b/challenge-159/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+#include <vector>
+#include <set>
+#include <cstdlib>
+
+//the smallest current divisor of a number is a prime number
+std::vector<int> primeDecompose( int n ) {
+  std::vector<int> primes ;
+  int current = 2 ;
+  while ( n != 1 ) {
+      if ( n % current == 0 ) {
+    primes.push_back( current ) ;
+    n /= current ;
+      }
+      else
+    current++ ;
+  }
+  return primes ;
+}
+
+int main( int argc, char * argv[] ) {
+  int n = std::atoi( argv[1] ) ;
+  while ( n <= 0 ) {
+      std::cout << "Please enter a number greater than 0!\n" ;
+      std::cin >> n ;
+  }
+  std::vector<int> primes { primeDecompose( n ) } ;
+  std::set<int> uniqueNums( primes.begin( ) , primes.end( ) ) ;
+  int pl = primes.size( ) ;
+  int ul = uniqueNums.size( ) ;
+  if ( pl == ul ) {
+      if ( pl % 2 == 0 )
+    std::cout << 1 ;
+      else
+    std::cout << -1 ;
+  }
+  else
+      std::cout << 0 ;
+  std::cout << std::endl ;
+  return 0 ;
+}
diff --git a/challenge-159/ulrich-rieke/haskell/ch-1.hs b/challenge-159/ulrich-rieke/haskell/ch-1.hs
new file mode 100644
index 0000000000..84c43f6cf3
--- /dev/null
+++ b/challenge-159/ulrich-rieke/haskell/ch-1.hs
@@ -0,0 +1,36 @@
+module Challenge159
+  where
+import Control.Applicative
+import Data.List ( sortBy )
+
+keepAskingForInput :: IO Int
+keepAskingForInput = do
+  putStrLn "Please enter a number greater than 0!"
+  number <- getLine
+  if ( read number ) > 0 then return $ read number
+  else do
+      keepAskingForInput
+
+solution :: Int -> [String]
+solution n =
+  let pairs = (,) <$> [1 .. n - 1] <*> [1 .. n]
+      fractions = filter (\p -> (fst p < snd p) && lcm ( fst p ) ( snd p)
+    == ( (fst p) * ( snd p ))) pairs
+      sorted = sortBy mySorter fractions
+  in ["0/1"] ++ map (\p -> (show $ fst p ) ++ "/" ++ ( show $ snd p ))
+    sorted ++ ["1/1"]
+
+mySorter :: (Int, Int) -> (Int,Int) -> Ordering
+mySorter (a , b ) ( c , d )
+  |firstFrac < secondFrac = LT
+  |firstFrac == secondFrac = EQ
+  |firstFrac > secondFrac = GT
+  where
+      firstFrac = fromIntegral a / fromIntegral b
+      secondFrac = fromIntegral c / fromIntegral d
+
+main :: IO ( )
+main = do
+  n <- keepAskingForInput
+  list <- return $ solution n
+  print list
diff --git a/challenge-159/ulrich-rieke/haskell/ch-2.hs b/challenge-159/ulrich-rieke/haskell/ch-2.hs
new file mode 100644
index 0000000000..1140981ce2
--- /dev/null
+++ b/challenge-159/ulrich-rieke/haskell/ch-2.hs
@@ -0,0 +1,45 @@
+module Challenge159_2
+  where
+import Control.Monad.State.Lazy
+import Data.List ( nub )
+
+divisors :: Int -> [Int]
+divisors n = [d | d <- [2..n] , mod n d == 0]
+
+decompose ::  State (Int , [Int]) [Int]
+decompose = do
+  (d , factors ) <- get
+  if d == 1
+      then return factors
+  else do
+      put ( div d ( head $ divisors d ) , factors ++ [ head $ divisors d])
+      decompose
+
+myFactors :: Int -> [Int]
+myFactors n = evalState decompose ( n , [] )
+
+keepAskingForInput :: IO Int
+keepAskingForInput = do
+  putStrLn "Please enter a number greater than 0!"
+  number <- getLine
+  if ( read number ) > 0 then return $ read number
+  else do
+      keepAskingForInput
+
+solution :: Int -> Int
+solution n
+  |len1 == len2 && even len1 = 1
+  |len1 == len2 && odd len1 = -1
+  |otherwise = 0
+  where
+      factors :: [Int]
+      factors = myFactors n
+      len1 :: Int
+      len1 = length factors
+      len2 :: Int
+      len2 = length $ nub factors
+
+main :: IO ( )
+main = do
+  n <- keepAskingForInput
+  putStrLn $ show $ solution n
diff --git a/challenge-159/ulrich-rieke/perl/ch-1.pl b/challenge-159/ulrich-rieke/perl/ch-1.pl
new file mode 100644
index 0000000000..0ce8192017
--- /dev/null
+++ b/challenge-159/ulrich-rieke/perl/ch-1.pl
@@ -0,0 +1,72 @@
+#!/usr/bin/perl ;
+use strict ;
+use warnings ;
+use feature 'say' ;
+
+sub primeDecomposition {
+  my $number = shift ;
+  my @primes ;
+  my $current = 2 ;
+  do {
+      if ( $number % $current == 0 ) {
+        push @primes , $current ;
+        $number /= $current ;
+      }
+      else {
+        $current++ ;
+      }
+  } until ( $number == 1 ) ;
+  return @primes ;
+}
+
+sub myOrder { ($a->[0] / $a->[1]) <=> ($b->[0] / $b->[1] ) }
+
+sub isCoprime {
+  my $numbera = shift ;
+  my $numberb = shift ;
+  my @firstPrimes = primeDecomposition( $numbera ) ;
+  my @secondPrimes = primeDecomposition( $numberb ) ;
+  my %firstFactors ;
+  for my $n ( @firstPrimes ) {
+      $firstFactors{$n}++ ;
+  }
+  my %secondFactors ;
+  for my $n ( @secondPrimes ) {
+      $secondFactors{$n}++ ;
+  }
+  my @common ;
+  for my $n ( keys %firstFactors ) {
+      if ( exists( $secondFactors{$n} ) ) {
+    push @common , $n ;
+      }
+  }
+  if ( scalar( @common ) == 0 ) {
+      return 1 ;
+  }
+  else {
+      return 0 ;
+  }
+}
+
+my $n = $ARGV[0] ;
+while ( $n <= 0 ) {
+  say "enter a number greater than 0! Re-enter!" ;
+  $n = <STDIN> ;
+  chomp $n ;
+}
+#find all coprime pairs of numerators and denominators between 1 and n - 1
+#and n respectively and order them in ascending order
+my @pairs ;
+push @pairs , [0 , 1] ;
+for my $num (1 .. $n - 1) {
+  for my $denom( 0 .. $n ) {
+      if ( ($num < $denom ) && isCoprime( $num , $denom ) ) {
+    push @pairs , [$num , $denom] ;
+      }
+  }
+}
+my @sorted = sort myOrder @pairs ;
+for my $p ( @sorted ) {
+  print "$p->[0]/$p->[1], " ;
+}
+say "1/1" ;
diff --git a/challenge-159/ulrich-rieke/perl/ch-2.pl b/challenge-159/ulrich-rieke/perl/ch-2.pl
new file mode 100644
index 0000000000..cd2862013a
--- /dev/null
+++ b/challenge-159/ulrich-rieke/perl/ch-2.pl
@@ -0,0 +1,45 @@
+#!/usr/bin/perl ;
+use strict ;
+use warnings ;
+use feature 'say' ;
+
+sub primeDecomposition {
+  my $number = shift ;
+  my @primes ;
+  my $current = 2 ;
+  do {
+      if ( $number % $current == 0 ) {
+    push @primes , $current ;
+        $number /= $current ;
+      }
+      else {
+    $current++ ;
+      }
+  } until ( $number == 1 ) ;
+  return @primes ;
+}
+
+my $n = $ARGV[0] ;
+while ( $n <= 0 ) {
+  say "Only positive integers are allowed!" ;
+  $n = <STDIN> ;
+  chomp $n ;
+}
+my %primeFactors ;
+my @primes = primeDecomposition( $n ) ;
+for my $p ( @primes ) {
+  $primeFactors{$p}++ ;
+}
+my $primesLen = scalar( @primes ) ;
+my $factorLen = scalar( keys %primeFactors ) ;
+if ( $primesLen == $factorLen ) { #square-free
+  if ( $primesLen % 2 == 0 ) {
+      say 1 ;
+  }
+  else {
+      say -1 ;
+  }
+}
+else {
+  say 0 ;
+}
diff --git a/challenge-159/ulrich-rieke/raku/ch-1.raku b/challenge-159/ulrich-rieke/raku/ch-1.raku
new file mode 100644
index 0000000000..15691e9e97
--- /dev/null
+++ b/challenge-159/ulrich-rieke/raku/ch-1.raku
@@ -0,0 +1,28 @@
+use v6 ;
+#find all numbers from 1 to n - 1 in the numerator and from 1 to n
+#in the denominator where numerator and denominator are coprime to
+#each other and order them in ascending order
+
+subset Positive of Int where * > 0 ;
+
+sub pairorder { ($^a[0] / $^a[1]) <=> ($^b[0] / $^b[1]) }
+
+sub MAIN( Positive $n is copy ) {
+  my @numerators = (1 .. $n - 1 ) ;
+  my @denominators = (1 .. $n ) ;
+  my @fractions ;
+  @fractions.push( (0 , 1 ) ) ;
+  for @numerators -> $num {
+      for @denominators -> $denom {
+    if ( ($num < $denom) && ($num lcm $denom ==
+          $num * $denom) ) {
+        @fractions.push( ($num , $denom) ) ;
+    }
+      }
+  }
+  my @sorted = @fractions.sort( &pairorder ) ;
+  for @sorted -> $pair {
+      print "$pair[0]/$pair[1], " ;
+  }
+  say "1/1" ;
+}
diff --git a/challenge-159/ulrich-rieke/raku/ch-2.raku b/challenge-159/ulrich-rieke/raku/ch-2.raku
new file mode 100644
index 0000000000..bc66f875b3
--- /dev/null
+++ b/challenge-159/ulrich-rieke/raku/ch-2.raku
@@ -0,0 +1,37 @@
+use v6 ;
+
+#for theoretical reasons, the smallest divisor of a number must be prime
+
+subset Positive of Int where * > 0 ;
+sub primeDecomposition( Positive $n is copy ) {
+  my @primeNumbers ;
+  my $current = 1 ;
+  while ( $n != 1 ) {
+      repeat {
+    $current++ ;
+      } until ( $n %% $current ) ;
+      @primeNumbers.push( $current ) ;
+      $n div= $current ;
+      $current-- ; # a prime factor might be repeated, in the non-squarefree
+              # numbers
+  }
+  return @primeNumbers ;
+}
+
+sub MAIN( Positive $n is copy ) {
+  my @primeNumbers = primeDecomposition( $n ) ;
+  my $primeSet = @primeNumbers.Set ;
+  my $setLen = $primeSet.elems ;
+  my $arrayLen = @primeNumbers.elems ;
+  if ( $setLen == $arrayLen ) { # square-free!
+      if ( $arrayLen %% 2 ) {
+    say 1 ;
+      }
+      else {
+    say -1 ;
+      }
+  }
+  else {
+      say 0 ;
+  }
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 6f52526a1d..089a41460f 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,4 +1,103 @@
 {
+   "series" : [
+      {
+         "data" : [
+            {
+               "drilldown" : "Dave Jacoby",
+               "y" : 3,
+               "name" : "Dave Jacoby"
+            },
+            {
+               "drilldown" : "E. Choroba",
+               "y" : 2,
+               "name" : "E. Choroba"
+            },
+            {
+               "drilldown" : "Flavio Poletti",
+               "name" : "Flavio Poletti",
+               "y" : 6
+            },
+            {
+               "drilldown" : "James Smith",
+               "y" : 3,
+               "name" : "James Smith"
+            },
+            {
+               "drilldown" : "Luca Ferrari",
+               "y" : 8,
+               "name" : "Luca Ferrari"
+            },
+            {
+               "drilldown" : "Mark Anderson",
+               "y" : 2,
+               "name" : "Mark Anderson"
+            },
+            {
+               "drilldown" : "Marton Polgar",
+               "name" : "Marton Polgar",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "name" : "Paulo Custodio",
+               "drilldown" : "Paulo Custodio"
+            },
+            {
+               "drilldown" : "PokGoPun",
+               "y" : 2,
+               "name" : "PokGoPun"
+            },
+            {
+               "name" : "Robert DiCicco",
+               "y" : 2,
+               "drilldown" : "Robert DiCicco"
+            },
+            {
+               "drilldown" : "Roger Bell_West",
+               "y" : 4,
+               "name" : "Roger Bell_West"
+            },
+            {
+               "drilldown" : "Simon Proctor",
+               "name" : "Simon Proctor",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Ulrich Rieke",
+               "y" : 4,
+               "name" : "Ulrich Rieke"
+            }
+         ],
+         "name" : "The Weekly Challenge - 159",
+         "colorByPoint" : 1
+      }
+   ],
+   "tooltip" : {
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1
+   },
+   "subtitle" : {
+      "text" : "[Champions: 13] Last updated at 2022-04-05 20:37:08 GMT"
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "plotOptions" : {
+      "series" : {
+         "borderWidth" : 0,
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         }
+      }
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 159"
+   },
    "yAxis" : {
       "title" : {
          "text" : "Total Solutions"
@@ -10,8 +109,6 @@
    "drilldown" : {
       "series" : [
          {
-            "name" : "Dave Jacoby",
-            "id" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -21,7 +118,9 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Dave Jacoby",
+            "name" : "Dave Jacoby"
          },
          {
             "data" : [
@@ -30,8 +129,8 @@
                   2
                ]
             ],
-            "name" : "E. Choroba",
-            "id" : "E. Choroba"
+            "id" : "E. Choroba",
+            "name" : "E. Choroba"
          },
          {
             "data" : [
@@ -48,10 +147,12 @@
                   2
                ]
             ],
-            "id" : "Flavio Poletti",
-            "name" : "Flavio Poletti"
+            "name" : "Flavio Poletti",
+            "id" : "Flavio Poletti"
          },
          {
+            "id" : "James Smith",
+            "name" : "James Smith",
             "data" : [
                [
                   "Perl",
@@ -61,11 +162,11 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "James Smith",
-            "name" : "James Smith"
+            ]
          },
          {
+            "id" : "Luca Ferrari",
+            "name" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -75,29 +176,27 @@
                   "Blog",
                   6
                ]
-            ],
-            "id" : "Luca Ferrari",
-            "name" : "Luca Ferrari"
+            ]
          },
          {
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "name" : "Mark Anderson",
-            "id" : "Mark Anderson"
+            ]
          },
          {
-            "name" : "Marton Polgar",
-            "id" : "Marton Polgar",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Marton Polgar",
+            "name" : "Marton Polgar"
          },
          {
             "data" : [
@@ -120,8 +219,8 @@
             "name" : "PokGoPun"
          },
          {
-            "name" : "Robert DiCicco",
             "id" : "Robert DiCicco",
+            "name" : "Robert DiCicco",
             "data" : [
                [
                   "Perl",
@@ -140,8 +239,8 @@
                   2
                ]
             ],
-            "name" : "Roger Bell_West",
-            "id" : "Roger Bell_West"
+            "id" : "Roger Bell_West",
+            "name" : "Roger Bell_West"
          },
          {
             "data" : [
@@ -152,101 +251,21 @@
             ],
             "name" : "Simon Proctor",
             "id" : "Simon Proctor"
+         },
+         {
+            "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ]
          }
       ]
-   },
-   "tooltip" : {
-      "followPointer" : 1,
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge - 159"
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 12] Last updated at 2022-04-05 20:19:25 GMT"
-   },
-   "series" : [
-      {
-         "name" : "The Weekly Challenge - 159",
-         "data" : [
-            {
-               "name" : "Dave Jacoby",
-               "drilldown" : "Dave Jacoby",
-               "y" : 3
-            },
-            {
-               "y" : 2,
-               "drilldown" : "E. Choroba",
-               "name" : "E. Choroba"
-            },
-            {
-               "y" : 6,
-               "name" : "Flavio Poletti",
-               "drilldown" : "Flavio Poletti"
-            },
-            {
-               "name" : "James Smith",
-               "drilldown" : "James Smith",
-               "y" : 3
-            },
-            {
-               "y" : 8,
-               "name" : "Luca Ferrari",
-               "drilldown" : "Luca Ferrari"
-            },
-            {
-               "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson",
-               "y" : 2
-            },
-            {
-               "name" : "Marton Polgar",
-               "drilldown" : "Marton Polgar",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Paulo Custodio",
-               "name" : "Paulo Custodio",
-               "y" : 2
-            },
-            {
-               "name" : "PokGoPun",
-               "drilldown" : "PokGoPun",
-               "y" : 2
-            },
-            {
-               "y" : 2,
-               "drilldown" : "Robert DiCicco",
-               "name" : "Robert DiCicco"
-            },
-            {
-               "drilldown" : "Roger Bell_West",
-               "name" : "Roger Bell_West",
-               "y" : 4
-            },
-            {
-               "drilldown" : "Simon Proctor",
-               "name" : "Simon Proctor",
-               "y" : 2
-            }
-         ],
-         "colorByPoint" : 1
-      }
-   ],
-   "xAxis" : {
-      "type" : "category"
-   },
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         }
-      }
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 00ae16ae32..e20266d39d 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,48 +1,15 @@
 {
    "yAxis" : {
+      "min" : 0,
       "title" : {
          "text" : null
-      },
-      "min" : 0
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2022]"
+      }
    },
    "legend" : {
       "enabled" : "false"
    },
-   "chart" : {
-      "type" : "column"
-   },
-   "xAxis" : {
-      "type" : "category",
-      "labels" : {
-         "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
-         }
-      }
-   },
-   "subtitle" : {
-      "text" : "Last updated at 2022-04-05 20:19:25 GMT"
-   },
    "series" : [
       {
-         "dataLabels" : {
-            "style" : {
-               "fontFamily" : "Verdana, sans-serif",
-               "fontSize" : "13px"
-            },
-            "y" : 10,
-            "align" : "right",
-            "format" : "{point.y:.0f}",
-            "enabled" : "true",
-            "rotation" : -90,
-            "color" : "#FFFFFF"
-         },
          "data" : [
             [
                "Blog",
@@ -50,14 +17,47 @@
             ],
             [
                "Perl",
-               7667
+               7669
             ],
             [
                "Raku",
-               4591
+               4593
             ]
          ],
+         "dataLabels" : {
+            "enabled" : "true",
+            "y" : 10,
+            "align" : "right",
+            "color" : "#FFFFFF",
+            "style" : {
+               "fontFamily" : "Verdana, sans-serif",
+               "fontSize" : "13px"
+            },
+            "format" : "{point.y:.0f}",
+            "rotation" : -90
+         },
          "name" : "Contributions"
       }
-   ]
+   ],
+   "subtitle" : {
+      "text" : "Last updated at 2022-04-05 20:37:08 GMT"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2022]"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "xAxis" : {
+      "type" : "category",
+      "labels" : {
+         "style" : {
+            "fontSize" : "13px",
+            "fontFamily" : "Verdana, sans-serif"
+         }
+      }
+   }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 79632a5045..d7d3f0b7d7 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,15 +1,18 @@
 {
-   "chart" : {
-      "type" : "column"
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2022-04-05 20:37:08 GMT"
+   },
+   "tooltip" : {
+      "followPointer" : "true",
+      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style=\"font-size:11px\"></span>"
    },
    "series" : [
       {
-         "name" : "The Weekly Challenge Languages",
-         "colorByPoint" : "true",
          "data" : [
             {
-               "name" : "#001",
                "drilldown" : "001",
+               "name" : "#001",
                "y" : 161
             },
             {
@@ -18,9 +21,9 @@
                "y" : 125
             },
             {
-               "drilldown" : "003",
                "name" : "#003",
-               "y" : 83
+               "y" : 83,
+               "drilldown" : "003"
             },
             {
                "y" : 99,
@@ -28,8 +31,8 @@
                "drilldown" : "004"
             },
             {
-               "y" : 78,
                "name" : "#005",
+               "y" : 78,
                "drilldown" : "005"
             },
             {
@@ -38,74 +41,74 @@
                "drilldown" : "006"
             },
             {
-               "name" : "#007",
                "drilldown" : "007",
-               "y" : 64
+               "y" : 64,
+               "name" : "#007"
             },
             {
-               "y" : 78,
                "name" : "#008",
+               "y" : 78,
                "drilldown" : "008"
             },
             {
-               "y" : 76,
                "name" : "#009",
+               "y" : 76,
                "drilldown" : "009"
             },
             {
                "y" : 65,
-               "drilldown" : "010",
-               "name" : "#010"
+               "name" : "#010",
+               "drilldown" : "010"
             },
             {
+               "drilldown" : "011",
                "y" : 85,
-               "name" : "#011",
-               "drilldown" : "011"
+               "name" : "#011"
             },
             {
                "drilldown" : "012",
-               "name" : "#012",
-               "y" : 89
+               "y" : 89,
+               "name" : "#012"
             },
             {
-               "name" : "#013",
                "drilldown" : "013",
+               "name" : "#013",
                "y" : 85
             },
             {
+               "name" : "#014",
                "y" : 101,
-               "drilldown" : "014",
-               "name" : "#014"
+               "drilldown" : "014"
             },
             {
-               "y" : 99,
+               "drilldown" : "015",
                "name" : "#015",
-               "drilldown" : "015"
+               "y" : 99
             },
             {
+               "drilldown" : "016",
                "y" : 71,
-               "name" : "#016",
-               "drilldown" : "016"
+               "name" : "#016"
             },
             {
+               "drilldown" : "017",
                "y" : 84,
-               "name" : "#017",
-               "drilldown" : "017"
+               "name" : "#017"
             },
             {
-               "drilldown" : "018",
                "name" : "#018",
-               "y" : 81
+               "y" : 81,
+               "drilldown" : "018"
             },
             {
-               "name" : "#019",
                "drilldown" : "019",
-               "y" : 103
+               "y" : 103,
+               "name" : "#019"
             },
             {
+               "name" : "#020",
                "y" : 101,
-               "drilldown" : "020",
-               "name" : "#020"
+               "drilldown" : "020"
             },