diff --git a/src/Julia/003.jl b/src/Julia/003.jl
new file mode 100644
index 0000000..b2f8a0f
--- /dev/null
+++ b/src/Julia/003.jl
@@ -0,0 +1,13 @@
+ORDER = ("R", "A", "M")
+
+function tricolor_flag(lst)
+    order = Dict(value => idx for (idx, value) in enumerate(ORDER))
+    return sort(lst, by= x -> order[x])    
+end
+
+
+check = ["M","R","A","A","R","R","A","M","M"]
+println(tricolor_flag(check))  # [R,R,R,A,A,A,M,M,M]
+
+check = ["M", "R", "A", "R", "R", "A"]
+println(tricolor_flag(check))  # [R,R,R,A,A,M]
\ No newline at end of file