function leftpad (str, len, ch) { str = str + ""; len = len - str.length; if (len <= 0) return str; if (!ch && ch !== 0) ch = " "; ch = ch + ""; if (ch === " " && len < 10) return cache[len] + str; var pad = ""; while (true) { if (len & 1) pad += ch; len >>= 1; if (len) ch += ch; else break; } return pad + str; } function chatGPTLeftPad(string, len, ch) { string += ""; const padding = len - string.length; if (padding <= 0) { return string; } const padChar = ch || ch === 0 ? `${ch}` : " "; const padString = padChar.repeat(padding); return padString + string; }