Initial commit

src/main/java/me/finn/unlegitlibrary/number/molecular/MolecularAdd.java

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+/*
+ * Copyright (C) 2024 UnlegitDqrk - All Rights Reserved
+ *
+ * You are unauthorized to remove this copyright.
+ * You have to give Credits to the Author in your project and link this GitHub site: https://github.com/UnlegitDqrk
+ * See LICENSE-File if exists
+ */
+
+package me.finn.unlegitlibrary.number.molecular;
+
+public class MolecularAdd {
+
+    /**
+     * @param k is the start number
+     * @param n is the end number
+     **/
+    public static int useFormula(int k, int n) {
+        return ((n - k + 1) * (n + k)) / 2;
+    }
+
+}

src/main/java/me/finn/unlegitlibrary/number/molecular/MolecularSubtract.java

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+/*
+ * Copyright (C) 2024 UnlegitDqrk - All Rights Reserved
+ *
+ * You are unauthorized to remove this copyright.
+ * You have to give Credits to the Author in your project and link this GitHub site: https://github.com/UnlegitDqrk
+ * See LICENSE-File if exists
+ */
+
+package me.finn.unlegitlibrary.number.molecular;
+
+import me.finn.unlegitlibrary.number.MathHelper;
+
+public class MolecularSubtract {
+
+
+    /**
+     * @param k is the start number
+     * @param n is the end number
+     **/
+    public static int useFormula(int k, int n) {
+        if (!MathHelper.isNegative(n)) n = -(n);
+        return ((-n - k + 1) * (-n + k) / 2) + k;
+    }
+}