比较版本大小java代码

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比较两个版本字符串，谁大谁小，

public class Scratch {private static int c(String s1, String s2) {if (s1 == null && s2 == null)return 0;else if (s1 == null)return -1;else if (s2 == null)return 1;String[] arr1 = s1.split("[^a-zA-Z0-9]+"), arr2 = s2.split("[^a-zA-Z0-9]+");int i1, i2, i3;for (int ii = 0, max = Math.min(arr1.length, arr2.length); ii <= max; ii++) {if (ii == arr1.length)return ii == arr2.length ? 0 : -1;else if (ii == arr2.length)return 1;try {i1 = Integer.parseInt(arr1[ii]);} catch (Exception x) {i1 = Integer.MAX_VALUE;}try {i2 = Integer.parseInt(arr2[ii]);} catch (Exception x) {i2 = Integer.MAX_VALUE;}if (i1 != i2) {return i1 - i2;}i3 = arr1[ii].compareTo(arr2[ii]);if (i3 != 0)return i3;}return 0;}/** * str1 > str2 返回1  * @param str1 * @param str2 * @return */public static int compare(String str1,String str2) {str1 = str1.replaceAll("[^0-9.]",""); str2 = str2.replaceAll("[^0-9.]",""); int i = c(str1, str2);if(i > 0){return 1;}else if(i < 0){return -1;}else{return 0;}}}

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