Change project structure to a Maven Java project + Refactor (#2816)

src/main/java/com/thealgorithms/conversions/OctalToHexadecimal.java

@@ -0,0 +1,64 @@
+package com.thealgorithms.conversions;
+
+import java.util.Scanner;
+
+/**
+ * Converts any Octal Number to HexaDecimal
+ *
+ * @author Tanmay Joshi
+ */
+public class OctalToHexadecimal {
+
+    /**
+     * This method converts a Octal number to a decimal number
+     *
+     * @param s The Octal Number
+     * @return The Decimal number
+     */
+    public static int octToDec(String s) {
+        int i = 0;
+        for (int j = 0; j < s.length(); j++) {
+            char num = s.charAt(j);
+            num -= '0';
+            i *= 8;
+            i += num;
+        }
+        return i;
+    }
+
+    /**
+     * This method converts a Decimal number to a Hexadecimal number
+     *
+     * @param d The Decimal Number
+     * @return The Hexadecimal number
+     */
+    public static String decimalToHex(int d) {
+        String digits = "0123456789ABCDEF";
+        if (d <= 0) {
+            return "0";
+        }
+        String hex = "";
+        while (d > 0) {
+            int digit = d % 16;
+            hex = digits.charAt(digit) + hex;
+            d = d / 16;
+        }
+        return hex;
+    }
+
+    public static void main(String args[]) {
+
+        Scanner input = new Scanner(System.in);
+        System.out.print("Enter the Octal number: ");
+        // Take octal number as input from user in a string
+        String oct = input.next();
+
+        // Pass the octal number to function and get converted decimal form
+        int decimal = octToDec(oct);
+
+        // Pass the decimal number to function and get converted Hex form of the number
+        String hex = decimalToHex(decimal);
+        System.out.println("The Hexadecimal equivalant is: " + hex);
+        input.close();
+    }
+}