Add missing local in variables

5 files changed, 10 insertions, 10 deletions

diff --git a/challenge-003/paulo-custodio/lua/ch-1.lua b/challenge-003/paulo-custodio/lua/ch-1.lua
index 525469191a..5c40f03256 100644
--- a/challenge-003/paulo-custodio/lua/ch-1.lua
+++ b/challenge-003/paulo-custodio/lua/ch-1.lua
@@ -16,7 +16,7 @@ seq5 = {1}
 
 function next_hamming()
     -- get the smallest of the queue heads
-    n = math.min(seq2[1], seq3[1], seq5[1])
+    local n = math.min(seq2[1], seq3[1], seq5[1])
 
     -- shift used multiples
     if n == seq2[1] then table.remove(seq2, 1); end
diff --git a/challenge-003/paulo-custodio/lua/ch-2.lua b/challenge-003/paulo-custodio/lua/ch-2.lua
index d8c661014c..8853469774 100644
--- a/challenge-003/paulo-custodio/lua/ch-2.lua
+++ b/challenge-003/paulo-custodio/lua/ch-2.lua
@@ -10,7 +10,7 @@ information about Pascal Triangle, check this wikipedia page.
 --]]
 
 function draw_pascal(rows)
-    data = {1}
+    local data = {1}
     for row=1,rows do
         -- print current row
         for col=1,rows-row do io.write(" "); end
@@ -18,7 +18,7 @@ function draw_pascal(rows)
         io.write("\n")
 
         -- compute next row
-        nxt = {1}
+        local nxt = {1}
         for col=1,row-1 do
             table.insert(nxt, data[col] + data[col+1])
         end
diff --git a/challenge-097/paulo-custodio/lua/ch-1.lua b/challenge-097/paulo-custodio/lua/ch-1.lua
index 4bb62c085d..46c6b0f418 100644
--- a/challenge-097/paulo-custodio/lua/ch-1.lua
+++ b/challenge-097/paulo-custodio/lua/ch-1.lua
@@ -22,7 +22,7 @@ Ciphertext: QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD
 --]]
 
 function caesar(n, text)
-    text = string.upper(text)
+    local text = string.upper(text)
     local cipher = ""
 
     for i=1, #text do
diff --git a/challenge-098/paulo-custodio/lua/ch-1.lua b/challenge-098/paulo-custodio/lua/ch-1.lua
index fa72bd2be5..90124c6509 100644
--- a/challenge-098/paulo-custodio/lua/ch-1.lua
+++ b/challenge-098/paulo-custodio/lua/ch-1.lua
@@ -21,15 +21,15 @@ Output:
 files = {}
 
 function readN(filename, n)
-    file = files[filename]
+    local file = files[filename]
 
     if file == nil then         -- file not yet open
         file = io.open(filename, "r")
         files[filename] = file
     end
-    text = ""
+    local text = ""
     for i=1,n do
-        c = file:read(1)
+        local c = file:read(1)
         if c ~= nil then
             text = text..c
         end
diff --git a/challenge-098/paulo-custodio/lua/ch-2.lua b/challenge-098/paulo-custodio/lua/ch-2.lua
index c48e032d03..87053a6ea5 100644
--- a/challenge-098/paulo-custodio/lua/ch-2.lua
+++ b/challenge-098/paulo-custodio/lua/ch-2.lua
@@ -30,8 +30,8 @@ the index 4.
 
 -- search for index of element, insert in array if not found
 function search_insert(nums, n)
-    b = 1
-    t = #nums
+    local b = 1
+    local t = #nums
     if t < b then               -- empty
         table.insert(nums, n)
         return 0
@@ -42,7 +42,7 @@ function search_insert(nums, n)
         table.insert(nums, n)
         return #nums-1
     else
-        m = math.floor((t+b)/2)
+        local m = math.floor((t+b)/2)
         while b+1 < t do        -- bisect loop
             if n == nums[m] then
                 return m-1