字符串补零的方法

Posted 2022-12-06 想实习犯法吗

第一种 使用StringBuilder

        String maxStr = a.length() > b.length() ? a : b;
        String minStr = a.length() < b.length() ? a : b;
         int diff = maxStr.length() - minStr.length();
        //如果两个字符串长度不一样,就给字符串长度较小的字符串补0
        if (diff > 0)
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < diff; i++) 
                sb.append("0");
            
            sb.append(minStr);
        

第二种

int shortestLen = (a.length() > b.length() ? b.length() : a.length());
        if (a.length() > b.length()) 
            b = generateZero(a.length() - shortestLen) + b;
         else 
            a = generateZero(b.length() - shortestLen) + a;
        

public static String generateZero(int n) 
        StringBuffer stringBuffer = new StringBuffer();
        while (n-- > 0) 
            stringBuffer.append("0");
        
        return stringBuffer.toString();
    

待补充