Method leftPad

java/lib/src/main/java/io/github/ccxt/base/Precise.java:330–336

(String s, int size, char ch)

    }

    private static String leftPad(String s, int size, char ch) {
        if (s.length() >= size) return s;
        StringBuilder sb = new StringBuilder(size);
        for (int i = s.length(); i < size; i++) sb.append(ch);
        sb.append(s);
        return sb.toString();
    }

    private static String repeat(char ch, int n) {
        if (n <= 0) return "";