Data commit

Task/Align-columns/CoffeeScript/align-columns-1.coffee

@@ -0,0 +1,48 @@
+pad = (n) ->
+  s = ''
+  while n > 0
+    s += ' '
+    n -= 1
+  s
+
+align = (input, alignment = 'center') ->
+  tokenized_lines = (line.split '$' for line in input)
+  col_widths = {}
+  for line in tokenized_lines
+    for token, i in line
+      if !col_widths[i]? or token.length > col_widths[i]
+        col_widths[i] = token.length
+  padders =
+    center: (s, width) ->
+      excess = width - s.length
+      left = Math.floor excess / 2
+      right = excess - left
+      pad(left) + s + pad(right)
+
+    right: (s, width) ->
+      excess = width - s.length
+      pad(excess) + s
+
+    left: (s, width) ->
+      excess = width - s.length
+      s + pad(excess)
+
+  padder = padders[alignment]
+
+  for line in tokenized_lines
+    padded_tokens = (padder(token, col_widths[i]) for token, i in line)
+    console.log padded_tokens.join ' '
+
+
+input = [
+  "Given$a$text$file$of$many$lines,$where$fields$within$a$line$"
+  "are$delineated$by$a$single$'dollar'$character,$write$a$program"
+  "that$aligns$each$column$of$fields$by$ensuring$that$words$in$each$"
+  "column$are$separated$by$at$least$one$space."
+  "Further,$allow$for$each$word$in$a$column$to$be$either$left$"
+  "justified,$right$justified,$or$center$justified$within$its$column."
+]
+
+for alignment in ['center', 'right', 'left']
+  console.log "\n----- #{alignment}"
+  align input, alignment

Task/Align-columns/CoffeeScript/align-columns-2.coffee

@@ -0,0 +1,25 @@
+> coffee align_columns.coffee
+
+----- center
+  Given        a         text     file    of     many      lines,    where   fields  within    a    line
+   are     delineated     by       a    single 'dollar'  character,  write      a    program
+   that      aligns      each    column   of    fields       by     ensuring  that    words    in   each
+  column      are     separated    by     at     least      one      space.
+ Further,    allow       for      each   word     in         a       column    to      be    either left
+justified,   right    justified,   or   center justified   within     its    column.
+
+----- right
+     Given          a       text   file     of      many     lines,    where  fields  within      a line
+       are delineated         by      a single  'dollar' character,    write       a program
+      that     aligns       each column     of    fields         by ensuring    that   words     in each
+    column        are  separated     by     at     least        one   space.
+  Further,      allow        for   each   word        in          a   column      to      be either left
+justified,      right justified,     or center justified     within      its column.
+
+----- left
+Given      a          text       file   of     many      lines,     where    fields  within  a      line
+are        delineated by         a      single 'dollar'  character, write    a       program
+that       aligns     each       column of     fields    by         ensuring that    words   in     each
+column     are        separated  by     at     least     one        space.
+Further,   allow      for        each   word   in        a          column   to      be      either left
+justified, right      justified, or     center justified within     its      column.