Java Double Number Truncate truncateDigits(double input, int numberDigits)

Description

CODE EXAMPLE

License

Open Source License

Declaration

public static String truncateDigits(double input, int numberDigits) 

Method Source Code

//package com.java2s;
/****************************************************
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****************************************************/

public class Main {
    /****************** CODE EXAMPLE ******************/
    //   double[] answer = getQuantileArray(testArray);

    ////////System.out.println("answer = " + answer);
    //}
    public static String truncateDigits(double input, int numberDigits) {
        int indexDot = -1;
        String integerPart = null, decimalPart = null, dot = ".";
        String wholePart = null;
        String result = null;
        wholePart = input + "";
        indexDot = (wholePart).indexOf(dot);
        if (indexDot >= 0) {
            integerPart = wholePart.substring(0, indexDot);
            try {
                decimalPart = wholePart.substring(indexDot + 1, indexDot + 1 + numberDigits);
            } catch (Exception e) {
                decimalPart = wholePart.substring(indexDot + 1, wholePart.length());

                //decimalPart = wholePart.substring(indexDot + 1, );
            }
            result = (integerPart + dot + decimalPart).trim();
        } else {
            result = (input + "").trim();
        }
        return result;
    }

    public static String[] truncateDigits(double[] input, int numberDigits) {
        String[] result = new String[input.length];
        int indexDot = -1;
        String integerPart = null, decimalPart = null, dot = ".";
        String wholePart = null;
        //int maxNumberDigit = 0;
        for (int i = 0; i < input.length; i++) {
            result[i] = truncateDigits(input[i], numberDigits);
        }
        return result;
    }

    public static String[][] truncateDigits(double[][] input, int numberDigits) {
        String[][] result = new String[input.length][];
        int indexDot = -1;
        String integerPart = null, decimalPart = null, dot = ".";
        String wholePart = null;
        //int maxNumberDigit = 0;
        for (int i = 0; i < input.length; i++) {
            result[i] = new String[input[i].length];
            for (int j = 0; j < input[i].length; j++) {

                //////System.out.println("input["+i+"]["+j+"] = " + input[i][j]);

                wholePart = input[i][j] + "";
                indexDot = (wholePart).indexOf(dot);
                if (indexDot >= 0) {
                    integerPart = wholePart.substring(0, indexDot);
                    try {
                        decimalPart = wholePart.substring(indexDot + 1, indexDot + 1 + numberDigits);
                    } catch (Exception e) {
                        decimalPart = wholePart.substring(indexDot + 1, wholePart.length());

                        //decimalPart = wholePart.substring(indexDot + 1, );
                    }
                    result[i][j] = (integerPart + dot + decimalPart).trim();
                } else {
                    result[i][j] = (input[i][j] + "").trim();
                }
            }
        }
        return result;
    }
}

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