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authorsiddharth <s@ricketyspace.net>2021-06-19 11:47:30 -0400
committersiddharth <s@ricketyspace.net>2021-06-19 11:47:30 -0400
commitd90053b1bb6620dc999f723d64aadccfbe6e0bbf (patch)
tree9d4d593727052cd471de513e2552ce251986e11e /lib
parente285c8aa4a03b4f96b1ab36a0fd4b1a6e810ec4b (diff)
lib: add PrintableAscii, AsciiScores
Extracted from challenge 19
Diffstat (limited to 'lib')
-rw-r--r--lib/str.go27
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/str.go b/lib/str.go
index 8db415f..ee8667f 100644
--- a/lib/str.go
+++ b/lib/str.go
@@ -3,6 +3,33 @@
package lib
+// Key: ASCII character; Value: score
+var AsciiScores map[byte]int = make(map[byte]int, 0)
+
+// Printable ASCII characters orrdered by frequency.
+// (https://mdickens.me/typing/letter_frequency.html)
+var PrintableAscii []byte = []byte{
+ ' ', 'e', 't', 'a', 'o', 'i', 'n', 's', 'r', 'h', 'l', 'd',
+ 'c', 'u', 'm', 'f', 'g', 'p', 'y', 'w', 'b', ',', '.',
+ 'v', 'k', '-', '"', '_', '\'', 'x', ')', '(', ';', '0', 'j',
+ '1', 'q', '=', '2', ':', 'z', '/', '*', '!', '?', '$', '3',
+ '5', '>', '{', '}', '4', '9', '[', ']', '8', '6', '7', '\\',
+ '+', '|', '&', '<', '%', '@', '#', '^', '`', '~',
+}
+
+func init() {
+ // Initialize AsciiScores
+ for pos, a := range PrintableAscii {
+ AsciiScores[a] = 255 - pos
+ // Also add the uppercase version of ascii
+ // character if it exists.
+ au := ByteToUpper(a)
+ if a != au {
+ AsciiScores[au] = 255 - pos
+ }
+ }
+}
+
func FillStr(a string, l int) string {
b := ""
if l < 1 {