4 files changed, 169 insertions, 0 deletions
diff --git a/challenge-148/lubos-kolouch/perl/ch-1.pl b/challenge-148/lubos-kolouch/perl/ch-1.pl
new file mode 100644
index 0000000000..0d95e4a76f
--- /dev/null
+++ b/challenge-148/lubos-kolouch/perl/ch-1.pl
@@ -0,0 +1,63 @@
+#!/usr/bin/perl
+use strict;
+use warnings;
+
+sub generate_eban_numbers {
+    my $limit = shift;
+
+    my %words = (
+        1   => 'one',
+        2   => 'two',
+        3   => 'three',
+        4   => 'four',
+        5   => 'five',
+        6   => 'six',
+        7   => 'seven',
+        8   => 'eight',
+        9   => 'nine',
+        10  => 'ten',
+        11  => 'eleven',
+        12  => 'twelve',
+        13  => 'thirteen',
+        14  => 'fourteen',
+        15  => 'fifteen',
+        16  => 'sixteen',
+        17  => 'seventeen',
+        18  => 'eighteen',
+        19  => 'nineteen',
+        20  => 'twenty',
+        30  => 'thirty',
+        40  => 'forty',
+        50  => 'fifty',
+        60  => 'sixty',
+        70  => 'seventy',
+        80  => 'eighty',
+        90  => 'ninety',
+        100 => 'one hundred'
+    );
+
+    my @eban_numbers;
+    for my $num ( 1 .. $limit ) {
+        my $word;
+        if ( $num <= 20 || $num == 100 ) {
+            $word = $words{$num};
+        }
+        elsif ( $num < 100 ) {
+            $word = $words{ int( $num / 10 ) * 10 } . " " . $words{ $num % 10 };
+        }
+        else {
+            $word =
+                $words{ int( $num / 100 ) } . " "
+              . $words{100} . " "
+              . $words{ $num % 100 };
+        }
+
+        if ( $word !~ /e/ ) {
+            push @eban_numbers, $num;
+        }
+    }
+
+    return @eban_numbers;
+}
+
+print join( ", ", generate_eban_numbers(100) );
diff --git a/challenge-148/lubos-kolouch/perl/ch-2.pl b/challenge-148/lubos-kolouch/perl/ch-2.pl
new file mode 100644
index 0000000000..a27727f53f
--- /dev/null
+++ b/challenge-148/lubos-kolouch/perl/ch-2.pl
@@ -0,0 +1,31 @@
+use strict;
+use warnings;
+use Math::Complex;
+
+sub generate_cardano_triplets {
+    my $n = shift;
+    my @triplets;
+    my $a = 1;
+
+    while ( @triplets < $n ) {
+        for my $b ( 0 .. $a ) {
+            next unless $b % 2 == 0;    # b is even
+            for my $c ( 1 .. $a ) {
+                next unless $c % 2 != 0;    # c is odd
+                my $val = cbrt( $a + $b * $c**2 ) + cbrt( $a - $b * $c**2 );
+                if ( abs( $val - 1 ) < 1e-10 ) {
+                    push @triplets, [ $a, $b, $c ];
+                    last if @triplets == $n;
+                }
+            }
+        }
+        $a += 2;    # a is odd
+    }
+
+    return @triplets;
+}
+
+my @triplets = generate_cardano_triplets(5);
+for my $triplet (@triplets) {
+    print join( ", ", @$triplet ), "\n";
+}
diff --git a/challenge-148/lubos-kolouch/python/ch-1.py b/challenge-148/lubos-kolouch/python/ch-1.py
new file mode 100644
index 0000000000..776d87d20f
--- /dev/null
+++ b/challenge-148/lubos-kolouch/python/ch-1.py
@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+def generate_eban_numbers(limit):
+    words = {
+        1: "one",
+        2: "two",
+        3: "three",
+        4: "four",
+        5: "five",
+        6: "six",
+        7: "seven",
+        8: "eight",
+        9: "nine",
+        10: "ten",
+        11: "eleven",
+        12: "twelve",
+        13: "thirteen",
+        14: "fourteen",
+        15: "fifteen",
+        16: "sixteen",
+        17: "seventeen",
+        18: "eighteen",
+        19: "nineteen",
+        20: "twenty",
+        30: "thirty",
+        40: "forty",
+        50: "fifty",
+        60: "sixty",
+        70: "seventy",
+        80: "eighty",
+        90: "ninety",
+        100: "one hundred",
+    }
+
+    eban_numbers = []
+    for num in range(1, limit + 1):
+        if num <= 20 or num == 100:
+            word = words[num]
+        elif num < 100:
+            if num % 10 == 0:
+                word = words[num]
+            else:
+                word = words[num // 10 * 10] + " " + words[num % 10]
+        else:
+            word = words[num // 100] + " " + words[100] + " " + words[num % 100]
+
+        if "e" not in word:
+            eban_numbers.append(num)
+
+    return eban_numbers
+
+
+print(generate_eban_numbers(100))
diff --git a/challenge-148/lubos-kolouch/python/ch-2.py b/challenge-148/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..6b72d78044
--- /dev/null
+++ b/challenge-148/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import cmath
+
+
+def generate_cardano_triplets(n):
+    triplets = []
+    a = 1
+    while len(triplets) < n:
+        for b in range(0, a, 2):  # b is even
+            for c in range(1, a, 2):  # c is odd
+                val = (a + b * c**2) ** (1 / 3) + (a - b * c**2) ** (1 / 3)
+                if abs(val.real - 1) < 1e-10 and abs(val.imag) < 1e-10:
+                    triplets.append((a, b, c))
+                    if len(triplets) == n:
+                        return triplets
+        a += 2  # a is odd
+    return triplets
+
+
+print(generate_cardano_triplets(5))