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Arrays and strings/1.3. replace_char.py similarity index 100% rename from Chapter-1 Arrays and strings/1.3. replace_char.py rename to 1. Arrays and strings/1.3. replace_char.py diff --git a/Chapter-1 Arrays and strings/1.4. palindrome_permutation.cpp b/1. Arrays and strings/1.4. palindrome_permutation.cpp similarity index 100% rename from Chapter-1 Arrays and strings/1.4. palindrome_permutation.cpp rename to 1. Arrays and strings/1.4. palindrome_permutation.cpp diff --git a/Chapter-1 Arrays and strings/1.4. palindrome_permutation.java b/1. Arrays and strings/1.4. palindrome_permutation.java similarity index 100% rename from Chapter-1 Arrays and strings/1.4. palindrome_permutation.java rename to 1. Arrays and strings/1.4. palindrome_permutation.java diff --git a/Chapter-1 Arrays and strings/1.4. palindrome_permutation.md b/1. Arrays and strings/1.4. palindrome_permutation.md similarity index 100% rename from Chapter-1 Arrays and strings/1.4. palindrome_permutation.md rename to 1. 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