2019独角兽企业重金招聘Python工程师标准>>> 
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class Test
{
public static void main(String[] args) {
List aa = new ArrayList();
aa.add("CCTV-1");
aa.add("CCTV-1");
aa.add("PCTV-1");
aa.add("ACTV-1");
aa.add("CCTV-10");
aa.add("CCTV-2");
aa.add("CCTV-3");
aa.add("CCTV-4");
Collections.sort(aa, new NaturalOrderComparator(true));
for (int i = 0; i < aa.size(); i++) {
System.out.print(aa.get(i));
}
}
}
/*
*
*
* Copyright 1997-2007 BBNT Solutions, LLC
* under sponsorship of the Defense Advanced Research Projects
* Agency (DARPA).
*
* You can redistribute this software and/or modify it under the
* terms of the Cougaar Open Source License as published on the
* Cougaar Open Source Website (www.cougaar.org).
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
*/
/*
NaturalOrderComparator.java -- Perform 'natural order' comparisons of strings in Java.
Copyright (C) 2003 by Pierre-Luc Paour
Based on the C version by Martin Pool, of which this is more or less a straight conversion.
Copyright (C) 2000 by Martin Pool
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
//CHANGES: KD - added case sensitive ordering capability
// Made comparison so it doesn't treat spaces as special characters
//CHANGES:
// set package to "org.cougaar.util"
// replaced "import java.util.*" with explicit imports,
// added "main" file reader support
import java.util.Comparator;
/**
* A sorting comparator to sort strings numerically, ie [1, 2, 10], as opposed
* to [1, 10, 2].
*/
public final class NaturalOrderComparator implements Comparator
{
public static final Comparator NUMERICAL_ORDER = new NaturalOrderComparator(false);
public static final Comparator CASEINSENSITIVE_NUMERICAL_ORDER = new NaturalOrderComparator(true);
private final boolean caseInsensitive;
public NaturalOrderComparator(boolean caseInsensitive) {
this.caseInsensitive = caseInsensitive;
}
int compareRight(String a, String b) {
int bias = 0;
int ia = 0;
int ib = 0;
// The longest run of digits wins. That aside, the greatest
// value wins, but we can't know that it will until we've scanned
// both numbers to know that they have the same magnitude, so we
// remember it in BIAS.
for (;; ia++, ib++) {
char ca = charAt(a, ia);
char cb = charAt(b, ib);
if (!Character.isDigit(ca) && !Character.isDigit(cb)) {
return bias;
}
else if (!Character.isDigit(ca)) {
return -1;
}
else if (!Character.isDigit(cb)) {
return +1;
}
else if (ca < cb) {
if (bias == 0) {
bias = -1;
}
}
else if (ca > cb) {
if (bias == 0)
bias = +1;
}
else if (ca == 0 && cb == 0) {
return bias;
}
}
}
public int compare(T o1, T o2) {
String a = o1.toString();
String b = o2.toString();
int ia = 0, ib = 0;
int nza = 0, nzb = 0;
char ca, cb;
int result;
while (true) {
// only count the number of zeroes leading the last number compared
nza = nzb = 0;
ca = charAt(a, ia);
cb = charAt(b, ib);
// skip over leading zeros
while (ca == '0') {
if (ca == '0') {
nza++;
}
else {
// only count consecutive zeroes
nza = 0;
}
// if the next character isn't a digit, then we've had a run of only zeros
// we still need to treat this as a 0 for comparison purposes
if (!Character.isDigit(charAt(a, ia + 1)))
break;
ca = charAt(a, ++ia);
}
while (cb == '0') {
if (cb == '0') {
nzb++;
}
else {
// only count consecutive zeroes
nzb = 0;
}
// if the next character isn't a digit, then we've had a run of only zeros
// we still need to treat this as a 0 for comparison purposes
if (!Character.isDigit(charAt(b, ib + 1)))
break;
cb = charAt(b, ++ib);
}
// process run of digits
if (Character.isDigit(ca) && Character.isDigit(cb)) {
if ((result = compareRight(a.substring(ia), b.substring(ib))) != 0) {
return result;
}
}
if (ca == 0 && cb == 0) {
// The strings compare the same. Perhaps the caller
// will want to call strcmp to break the tie.
return nza - nzb;
}
if (ca < cb) {
return -1;
}
else if (ca > cb) {
return +1;
}
++ia;
++ib;
}
}
private char charAt(String s, int i) {
if (i >= s.length()) {
return 0;
}
else {
return caseInsensitive ? Character.toUpperCase(s.charAt(i)) : s.charAt(i);
}
}
}