40 lines
1.1 KiB
Nim
40 lines
1.1 KiB
Nim
import unicode
|
|
|
|
proc reverse(s: var string) =
|
|
for i in 0 .. s.high div 2:
|
|
swap(s[i], s[s.high - i])
|
|
|
|
proc reversed(s: string): string =
|
|
result = newString(s.len)
|
|
for i,c in s:
|
|
result[s.high - i] = c
|
|
|
|
proc uniReversed(s: string): string =
|
|
result = newStringOfCap(s.len)
|
|
var tmp: seq[Rune] = @[]
|
|
for r in runes(s):
|
|
tmp.add(r)
|
|
for i in countdown(tmp.high, 0):
|
|
result.add(toUtf8(tmp[i]))
|
|
|
|
proc isComb(r: Rune): bool =
|
|
(r >=% Rune(0x300) and r <=% Rune(0x36f)) or
|
|
(r >=% Rune(0x1dc0) and r <=% Rune(0x1dff)) or
|
|
(r >=% Rune(0x20d0) and r <=% Rune(0x20ff)) or
|
|
(r >=% Rune(0xfe20) and r <=% Rune(0xfe2f))
|
|
|
|
proc uniReversedPreserving(s: string): string =
|
|
result = newStringOfCap(s.len)
|
|
var tmp: seq[Rune] = @[]
|
|
for r in runes(s):
|
|
if isComb(r): tmp.insert(r, tmp.high)
|
|
else: tmp.add(r)
|
|
for i in countdown(tmp.high, 0):
|
|
result.add(toUtf8(tmp[i]))
|
|
|
|
for str in ["Reverse This!", "as⃝df̅"]:
|
|
echo "Original string: ", str
|
|
echo "Reversed: ", reversed(str)
|
|
echo "UniReversed: ", uniReversed(str)
|
|
echo "UniReversedPreserving: ", uniReversedPreserving(str)
|