Java Number Min Value minusxx(String str11, String str22)

Description

minusxx

License

Apache License

Declaration

private static String minusxx(String str11, String str22) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {
    private static String minusxx(String str11, String str22) {

        int index1 = str11.indexOf(".");
        int len1 = str11.length() - 1 - index1;
        int index2 = str22.indexOf(".");
        int len2 = str22.length() - 1 - index2;

        String str1 = str11.replace(".", "");
        String str2 = str22.replace(".", "");

        char[] ch1 = new char[str1.length()];
        reverse(str1, ch1);//w  w w . j  av  a  2  s.  c  om

        char[] ch2 = new char[str2.length()];
        reverse(str2, ch2);

        int[] res = new int[str1.length() > str2.length() ? str1.length() + 1 : str2.length() + 1];
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < ch1.length; i++) {
            res[i] = (ch1[i] - '0') - (ch2[i] - '0');
            if (res[i] < 0) {
                res[i] = res[i] + 10;
                ch1[i + 1] = (char) ((ch1[i + 1] - '0') - ('1' - '0') + 48);
            }

            sb.append(res[i]);
        }
        String result = sb.reverse().toString();
        int indexx = 0;
        if (str11.contains(".") || str22.contains(".")) {
            if (len1 >= len2) {
                indexx = result.length() - len1;
            } else {
                indexx = result.length() - len2;
            }
            StringBuilder ss = new StringBuilder(result);

            ss.insert(indexx, ".");
            result = ss.toString();
        }
        int index = -1;
        for (int i = 0; i < result.length(); i++) {
            if (result.charAt(0) == '0') {
                if (result.charAt(i) == '0' && result.charAt(i + 1) != '0') {
                    index = i;
                    break;
                }
            }
        }

        if (index != -1) {
            result = result.substring(index + 1);
        }
        return result;

    }

    private static void reverse(String str1, char[] ch1) {
        for (int i = str1.length() - 1; i >= 0; i--) {
            ch1[i] = str1.charAt(str1.length() - 1 - i);
        }
    }
}

Related

1. minSignedIntForBitSize_noCheck(final int bitSize)
2. minSize(String str, int min, boolean nullCheck)
3. minSPSForBandCode(String bandCode)
4. minToS(long s)
5. minUnsigned(long a, long b)
6. minValue(int bits)