Java Char Array to Int charArrayDecimalToInt(char[] str, int start, int len, int mul)

Description

char Array Decimal To Int

License

Apache License

Parameter

Parameter	Description
str	a parameter
start	a parameter
end	a parameter

Declaration

public static int charArrayDecimalToInt(char[] str, int start, int len, int mul) 

Method Source Code

//package com.java2s;


public class Main {
    /**//from w w w.j av  a  2  s .co  m
     * 
     * @param str
     * @param start
     * @param end
     * @return
     */
    public static int charArrayDecimalToInt(char[] str, int start, int len, int mul) {
        int v = 0;
        int f = 0;
        int m = mul;
        boolean p = false;

        for (int i = start; i < start + len; i++) {
            int bit = -1;
            switch (str[i]) {
            case '0':
                bit = 0;
                break;
            case '1':
                bit = 1;
                break;
            case '2':
                bit = 2;
                break;
            case '3':
                bit = 3;
                break;
            case '4':
                bit = 4;
                break;
            case '5':
                bit = 5;
                break;
            case '6':
                bit = 6;
                break;
            case '7':
                bit = 7;
                break;
            case '8':
                bit = 8;
                break;
            case '9':
                bit = 9;
                break;
            case '.':
                if (!p) {
                    p = true;
                    bit = 0;
                }
                break;
            default:
                break;
            }
            if (bit < 0)
                break;
            if (p) {
                f += bit * m;
                m = m / 10;
            } else {
                v += bit;
                v = v * 10;
            }
        }
        v = v / 10;
        //        println("v="+v+" f="+f);
        return v * mul + f;
    }
}

Related

1. charArrayDigitToInt(char[] str, int start, int len)
2. charArrayHexToInt(char[] str, int start, int len)
3. charArrayToInt(char[] data, int start, int length, int[] end)
4. charsToInt(char[] chars, int offset)