Method repeat

java/lib/src/main/java/io/github/ccxt/base/Precise.java:338–343

(char ch, int n)

    }

    private static String repeat(char ch, int n) {
        if (n <= 0) return "";
        StringBuilder sb = new StringBuilder(n);
        for (int i = 0; i < n; i++) sb.append(ch);
        return sb.toString();
    }
}