Refactor

src/framework/helper/random.ts

@@ -0,0 +1,17 @@
+export class Random {
+  public constructor(private seed: number) {}
+
+  public get next(): number {
+    return (
+      ((2 ** 31 - 1) & (this.seed = Math.imul(48271, this.seed))) / 2 ** 31
+    );
+  }
+
+  public choose<T>(list: Array<T>): T {
+    return list[this.randomInInterval(0, list.length)];
+  }
+
+  public randomInInterval(aClosed: number, bOpen: number): number {
+    return Math.floor((bOpen - aClosed) * this.next) + aClosed;
+  }
+}