165_MFO的博客

• split . 时要转义

public static int compareVersion(String version1, String version2) {
		String []a =version1.split("\.");
		String []b = version2.split("\.");
		int l = a.length;
		if( b.length > l) l = b.length;
		long va = 0;
		long vb = 0;
		for(int i=0;i<a.length;i++) {
			va = (long) (va +Integer.parseInt(a[i])*Math.pow(10, (l-i)));
			
		}
		for(int j=0;j<b.length;j++) {
			vb = (long) (vb +Integer.parseInt(b[j])*Math.pow(10, (l-j)));
		}
		System.out.println("va "+va+"vb "+vb);
		if(va > vb) {
			return 1;
		}else if(va < vb) {
			return -1;
		}
		return 0;
		
		

    }
public static i