From 59fd27f1a646743d5b4cc14df4376620ae535b45 Mon Sep 17 00:00:00 2001
From: Suryapratap Singh <suryprtaps@gmail.com>
Date: Thu, 26 Aug 2021 10:48:14 +0530
Subject: [PATCH] add LowerCaseConversion method

---
 Conversions/LowerCaseConversion.js | 35 ++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Conversions/LowerCaseConversion.js

diff --git a/Conversions/LowerCaseConversion.js b/Conversions/LowerCaseConversion.js
new file mode 100644
index 000000000..6ae481a7e
--- /dev/null
+++ b/Conversions/LowerCaseConversion.js
@@ -0,0 +1,35 @@
+/*
+    Explanation :- a user gives a String (it can be incomplete uppercase or
+        partial uppercase) and then the program would convert it into a
+        complete(all characters in lower case) lower case string. The
+        logic we have used in the following program is: All the upper case
+        characters (A-Z) has ASCII value ranging from 65 to 90 and their
+        corresponding lower case characters (a-z) have ASCII values 32
+        greater than them. For example ‘A‘ has an ASCII value of 65
+        and ‘a‘ has an ASCII value of 97 (65+32). The same applies to other
+        characters.
+*/
+
+/**
+ * LowerCaseConversion takes any case-style string and converts it to the lower case-style string.
+ * @param {String} inputString any case style string
+ * @returns {String} lower case string
+ */
+const LowerCaseConversion = (inputString) => {
+  // Take a string and split it into characters.
+  const newString = inputString.split('').map(char => {
+    // Get a character code by the use charCodeAt method.
+    const presentCharCode = char.charCodeAt()
+    // If the character code lies between 65 to 90 it means they are in the upper case so convert it.
+    if (presentCharCode >= 65 && presentCharCode <= 90) {
+      // Convert the case by use of the above explanation.
+      return String.fromCharCode(presentCharCode + 32)
+    }
+    // Else return the characters without any modification.
+    return char
+  })
+  // After modification, with the help of the join method, join all the characters and return them.
+  return newString.join('')
+}
+
+module.exports = LowerCaseConversion