Merge branch 'master' of https://github.com/manwar/perlweeklychallenge-club

2 files changed, 73 insertions, 0 deletions

diff --git a/challenge-144/sgreen/python/ch-1.py b/challenge-144/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..0301f27de9
--- /dev/null
+++ b/challenge-144/sgreen/python/ch-1.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+
+def get_primes():
+    primes = []
+    # Return a list of all primes between 2 and 50 (being 100 ÷ 2)
+    for i in range(2, 51):
+        for d in range(2, int(i / 2) + 1):
+            # If the number is divisable by something other than one and
+            #  itself, it's not a prime
+            if i % d == 0:
+                break
+        else:
+            # It's a prime
+            primes.append(i)
+
+    return primes
+
+
+def main():
+    primes = get_primes()
+    semiprimes = []
+
+    for i in primes:
+        for j in primes:
+            x = i * j
+            if x > 100:
+                break
+            if x not in semiprimes:
+                semiprimes.append(x)
+
+    semiprimes.sort()
+    print(*semiprimes, sep=', ')
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-144/sgreen/python/ch-2.py b/challenge-144/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..086ad9a6f1
--- /dev/null
+++ b/challenge-144/sgreen/python/ch-2.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+
+import math
+import sys
+
+
+def main(inputs):
+    m = int(inputs[0])
+    n = int(inputs[1])
+
+    if m < 1:
+        raise ValueError('The first number must be a positive integer')
+    if n < 1:
+        raise ValueError('The second number must be a positive integer')
+
+    # We know the first three values in the sequence are the two numbers and
+    # the sum
+    seq = [m, n, m + n]
+    current_value = seq[-1] + 1
+
+    while len(seq) < 10:
+        sums = 0
+        for i in range(m, math.ceil(current_value / 2)):
+            j = current_value - i
+            if i in seq and j in seq:
+                sums += 1
+
+        if sums == 1:
+            seq.append(current_value)
+
+        current_value += 1
+
+    print(*seq, sep=', ')
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])