2 files changed, 47 insertions, 0 deletions
diff --git a/challenge-081/shawn-wagner/tcl/ch1.tcl b/challenge-081/shawn-wagner/tcl/ch1.tcl
new file mode 100755
index 0000000000..bc0b95423b
--- /dev/null
+++ b/challenge-081/shawn-wagner/tcl/ch1.tcl
@@ -0,0 +1,27 @@
+#!/usr/bin/env tclsh
+
+proc substrings {s} {
+    set len [string length $s]
+    for {set start 0} {$start < $len} {incr start} {
+        for {set end $start} {$end < $len} {incr end} {
+            dict set substrings [string range $s $start $end] 1
+        }
+    }
+    return [dict keys $substrings]
+}
+
+proc task1 {A B} {
+    foreach substr [concat [substrings $A] [substrings $B]] {
+        dict incr subs $substr
+    }
+    dict for {substr count} $subs {
+        if {$count != 2} { continue }
+        if {[regexp "^(?:$substr)+$" $A] && [regexp "^(?:$substr)+$" $B]} {
+            lappend common $substr
+        }
+    }
+    puts [lsort $common]
+}
+
+task1 abcdabcd abcdabcdabcdabcd
+task1 aaa aa
diff --git a/challenge-081/shawn-wagner/tcl/ch2.tcl b/challenge-081/shawn-wagner/tcl/ch2.tcl
new file mode 100755
index 0000000000..6bee2cb108
--- /dev/null
+++ b/challenge-081/shawn-wagner/tcl/ch2.tcl
@@ -0,0 +1,20 @@
+#!/usr/bin/env tclsh
+
+proc task2 {input} {
+    set fp [open $input]
+    while {[gets $fp line] >= 0} {
+        regsub -all {[.""(),]|--|'s} $line "" line
+        foreach word [split $line] {
+            dict incr words $word
+        }
+    }
+    close $fp
+    dict for {word count} $words {
+        dict lappend frequencies $count $word
+    }
+    foreach count [lsort -integer [dict keys $frequencies]] {
+        puts "$count [lsort [dict get $frequencies $count]]"
+    }
+}
+
+task2 input