Data commit

Task/CRC-32/Lua/crc-32-1.lua

@@ -0,0 +1,3 @@
+local compute=require"zlib".crc32()
+local sum=compute("The quick brown fox jumps over the lazy dog")
+print(string.format("0x%x", sum))

Task/CRC-32/Lua/crc-32-2.lua

@@ -0,0 +1,34 @@
+function crc32(buf, size)
+  local crc = 0xFFFFFFFF
+  local table = {}
+  local rem, c
+
+  -- calculate CRC-table
+  for i = 0, 0xFF do
+    rem = i
+    for j = 1, 8 do
+      if (rem & 1 == 1) then
+        rem = rem >> 1
+        rem = rem ~ 0xEDB88320
+      else
+        rem = rem >> 1
+      end
+    end
+    table[i] = rem
+  end
+
+  for x = 1, size do
+    c = buf[x]
+    crc = (crc >> 8) ~ table[(crc & 0xFF) ~ c]
+  end
+  return crc ~ 0xFFFFFFFF
+end
+
+
+local str = "The quick brown fox jumps over the lazy dog"
+local t = {}
+for i = 1, #str do
+  t[i] = str:byte(i)
+end
+
+print(string.format("CRC32: %x", crc32(t,#str)))