tasks a-s

Task/Run-length-encoding/Run-BASIC/run-length-encoding.run

@@ -0,0 +1,26 @@
+string$ = "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW"
+beg = 1
+i   = 1
+[loop]
+s$ = mid$(string$,beg,1)
+while mid$(string$,i,1) = s$
+  i = i + 1
+wend
+press$ = press$ ; i-beg;s$
+beg    = i
+if i < len(string$) then goto [loop]
+print "Compressed:";press$
+
+beg = 1
+i   = 1
+[expand]
+while mid$(press$,i,1) <= "9"
+  i = i + 1
+wend
+for j = 1 to val(mid$(press$,beg, i - beg))
+  expand$ = expand$ + mid$(press$,i,1)
+next j
+i   = i + 1
+beg = i
+if i < len(press$) then goto [expand]
+print "  Expanded:";expand$