init

src/helper/random.ts

@@ -0,0 +1,27 @@
+export function randomPartition(sum: number, parts: number): number[] {
+    const raw = Array.from({ length: parts }, () => Math.random());
+    const total = raw.reduce((a, b) => a + b, 0);
+    const result = raw.map(r => Math.floor((r / total) * (sum - parts)) + 1);
+    let diff = sum - result.reduce((a, b) => a + b, 0);
+    while (diff !== 0) {
+        for (let i = 0; i < result.length && diff !== 0; i++) {
+            if (diff > 0) {
+                result[i]++;
+                diff--;
+            } else if (result[i] > 1) {
+                result[i]--;
+                diff++;
+            }
+        }
+    }
+
+    return result;
+}
+
+export function randomStep(x: number): number {
+    let total = 0;
+    for (let i = 0; i < x; i++) {
+        total += Math.floor(Math.random() * 3);
+    }
+    return total;
+}