- Added guest contribution by Robert DiCicco.

1 files changed, 45 insertions, 0 deletions

diff --git a/challenge-175/robert-dicicco/julia/ch-1.jl b/challenge-175/robert-dicicco/julia/ch-1.jl
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+++ b/challenge-175/robert-dicicco/julia/ch-1.jl
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+#!julia.exe
+
+using Dates
+
+# AUTHOR: Robert DiCicco
+# DATE: 2022=07-26
+# Challenge 175 Last Sunday ( Julia )
+
+function checkArgs(args)
+  global year
+
+  try
+    year = parse(Int64, args[1])
+  catch
+    println("Error: Tear must be an integer >= 1900")
+    exit(0)
+  finally
+    if year < 1900
+      println("Error: Year must be >= 1900")
+      exit(0)
+    else
+      main(year)
+    end
+  end
+end
+
+function LastSunday( yr, mth)
+  td = Dates.Date(yr,mth,1)
+  ld = Dates.lastdayofmonth(td)
+  wd = Dates.dayofweek(ld)
+
+  if wd == 7
+    println(ld)
+  else
+    println(ld - Dates.Day(wd))
+  end
+end
+
+function main(year)
+  for mth in 1:12
+    LastSunday(year,mth)
+  end
+end
+
+checkArgs(ARGS)