From 1cf6e6d0c8e15a711e0c13dd2cf0a935aae1cbd4 Mon Sep 17 00:00:00 2001
From: Abigail <abigail@abigail.freedom.nl>
Date: Sun, 23 Jan 2022 18:30:26 +0100
Subject: Week 148, part 2: Tcl solution

---
 challenge-148/abigail/tcl/ch-2.tcl | 95 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 challenge-148/abigail/tcl/ch-2.tcl

diff --git a/challenge-148/abigail/tcl/ch-2.tcl b/challenge-148/abigail/tcl/ch-2.tcl
new file mode 100644
index 0000000000..f398cdbbd1
--- /dev/null
+++ b/challenge-148/abigail/tcl/ch-2.tcl
@@ -0,0 +1,95 @@
+#!/usr/local/opt/tcl-tk/bin/tclsh
+
+#
+# See https://theweeklychallenge.org/blog/perl-weekly-challenge-148
+#
+
+#
+# Run as: tclsh ch-2.tcl
+#
+
+set COUNT 5
+set A     0
+set B     1
+set C     2
+set SUM   3
+set out   {}
+for {set i 0} {$i < $COUNT} {incr i} {
+    lset out $i $A             999999
+    lset out $i $B             999999
+    lset out $i $C             999999
+    lset out $i $SUM [expr 3 * 999999]
+}
+
+set max_index 0
+
+for {set k 0} {$k < [lindex $out $max_index $SUM]} {incr k} {
+    set a  [expr 3 * $k + 2]
+    set f1 [expr     $k + 1]
+    set f2 [expr 8 * $k + 5]
+
+    set d1 {}
+    for {set i 1} {$i * $i <= $f1} {incr i} {
+        if {$f1 % $i == 0} {
+            lappend d1 $i
+            if {$i != $f1 / $i} {
+                lappend d1 [expr $f1 / $i]
+            }
+        }
+    }
+
+    set d2 {}
+    for {set i 1} {$i * $i <= $f2} {incr i} {
+        if {$f2 % $i == 0} {
+            set s1 [expr isqrt ($i)]
+            set s2 [expr isqrt ($f2 / $i)]
+            if {$s1 * $s1 == $i} {
+                lappend d2 $s1
+            }
+            if {$s2 * $s2 == $f2 / $i && $s1 != $s2} {
+                lappend d2 $s2
+            }
+        }
+    }
+
+    foreach d1v $d1 {
+        foreach d2v $d2 {
+            set b [expr $d1v * $d2v]
+            set c [expr $f1 * $f1 * $f2 / ($b * $b)]
+            if {$a + $b + $c < [lindex $out $max_index $SUM]} {
+                set seen 0
+                for {set i 0} {$i < $COUNT} {incr i} {
+                    if {[lindex $out $i $A] == $a && \
+                        [lindex $out $i $B] == $b} {
+                        set seen 1
+                    }
+                }
+                if {$seen > 0} {
+                    break
+                }
+
+                lset out $max_index $A $a
+                lset out $max_index $B $b
+                lset out $max_index $C $c
+                lset out $max_index $SUM [expr $a + $b + $c]
+
+                set max_index 0
+                set max_sum [lindex $out $max_index $SUM]
+                for {set i 1} {$i < $COUNT} {incr i} {
+                    if {$max_sum < [lindex $out $i $SUM]} {
+                        set max_sum [lindex $out $i $SUM]
+                        set max_index $i
+                    }
+                }
+            }
+        }
+    }
+}
+
+foreach row $out {
+    puts -nonewline [lindex $row $A]
+    puts -nonewline " "
+    puts -nonewline [lindex $row $B]
+    puts -nonewline " "
+    puts            [lindex $row $C]
+}
-- 
cgit