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[JAVA]用Java实现的各种排序

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用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 Rg+# (y  
插入排序: NqveL<r`  
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package org.rut.util.algorithm.support; JT~Dr KI_  
jQ7-M4qO/  
import org.rut.util.algorithm.SortUtil; ==oJhB  
/** j ,lI\vw<  
* @author treeroot mx}4iO:Xp  
* @since 2006-2-2 NciIqF  
* @version 1.0 Pc7p2  
*/ ruyQ}b:zS  
public class InsertSort implements SortUtil.Sort{ mNEh\4ai  
O%6D2d  
/* (non-Javadoc) u} +?'B)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xE$lx:C"FU  
*/ K-K>'T9F}  
public void sort(int[] data) { fVVD}GM=  
int temp; t OxH9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d0&  
} mahNQ5W*)  
} ^SW9J^9  
} N2Ysi$  
+@H{H2J4  
} M{jq6c  
`%EcQ}Nr  
冒泡排序: GV28&!4sS  
p )]x,F  
package org.rut.util.algorithm.support; & JJ*?Dl  
_ n1:v~  
import org.rut.util.algorithm.SortUtil; r. (}  
7$t['2j3  
/** wA)n ryXV  
* @author treeroot #0\* 8 6  
* @since 2006-2-2 k#7A@Vb  
* @version 1.0 euW   
*/ SJlE!MK  
public class BubbleSort implements SortUtil.Sort{ +_u~Np  
^4'!B +}F  
/* (non-Javadoc) ~jmI`X/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ao[yHcAs  
*/ ^ 4Ff8Y  
public void sort(int[] data) { B#35)QI  
int temp; k g Rys  
for(int i=0;i for(int j=data.length-1;j>i;j--){ i[ws%GfEv  
if(data[j] SortUtil.swap(data,j,j-1); j)Kd'Va  
} NV@$\ <  
} m6]6 !_  
} %DA`.Z9 #  
} 9sd}Z,l  
wO`G_!W9  
} rk@qcQR  
8xG"hJR  
选择排序: e=eip?p  
i}i >ho-8  
package org.rut.util.algorithm.support; +P,ic*Kq*  
rLA-q||  
import org.rut.util.algorithm.SortUtil; a2kAZCQ  
c&{= aIe w  
/** Yx,7e(AI`  
* @author treeroot G007[|  
* @since 2006-2-2 Jf\`?g3#  
* @version 1.0 (0.JoeA`y  
*/ R*XZPzg%  
public class SelectionSort implements SortUtil.Sort { yF%e)6  
L/I ] NA!U  
/* Dl AwB1Ak  
* (non-Javadoc) +Ar4X-A{y  
* K[ S>EITr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +DR{aX/ll  
*/ o)x&|0_  
public void sort(int[] data) { <RY!Mc  
int temp; v&3" (fp  
for (int i = 0; i < data.length; i++) { (I'{ pF)  
int lowIndex = i; O=lRI)6w@e  
for (int j = data.length - 1; j > i; j--) { u47`&\  
if (data[j] < data[lowIndex]) { Y6d~hLC  
lowIndex = j; &0"*.:J9  
} &^uaoB0  
} G;ZN>8NB  
SortUtil.swap(data,i,lowIndex); [McqwU/Q  
} a" T+CA  
} &-JIXVd*R  
^N 4Y*NtV7  
} g)D@4RM  
[z+YX s!N  
Shell排序: : yq2 XE%r  
wL^x9O|`p9  
package org.rut.util.algorithm.support; /C5py&#-I  
bn5O2  
import org.rut.util.algorithm.SortUtil; qt/6o|V  
PMW@xk^<Y  
/** rOO10g  
* @author treeroot bFlI:R&<  
* @since 2006-2-2 e7\gd\  
* @version 1.0 1 XJZuv,T:  
*/ [7[Qw]J  
public class ShellSort implements SortUtil.Sort{ [KbLEMrPba  
NWQ7%~#k*  
/* (non-Javadoc) T4gfQ6#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qLc&.O.=  
*/ BI<9xl]a  
public void sort(int[] data) { F$kiSjh9aJ  
for(int i=data.length/2;i>2;i/=2){ 8}4.x3uw  
for(int j=0;j insertSort(data,j,i); QZa^Cng~  
} aI`d  
} Yl?s^]SFU  
insertSort(data,0,1); d{@'&?tj  
} cfg.&P>   
BM)a,fIgo  
/** b`^?nD7  
* @param data 8x7TK2r  
* @param j _5O~ ]}  
* @param i D!Nc&|X^  
*/ .h4Z\R`  
private void insertSort(int[] data, int start, int inc) { v)nv"o[  
int temp; {#`wW`U^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R~hIoaiN  
} Z?3B1o9  
} 589fr"Ma,6  
} [fb9;,x`  
O#C0~U]dDW  
} m39.j:BG5  
OT6Te&  
快速排序: 9.( [,J  
zcH"Kh&  
package org.rut.util.algorithm.support; a>,_o(]cW  
>uQjygjj  
import org.rut.util.algorithm.SortUtil; 7!m<d,]N  
'"rm66  
/** 5nceOG8  
* @author treeroot Nlwt}7  
* @since 2006-2-2 Z("N *`VP;  
* @version 1.0 B,Tv9(sv  
*/ *-q &~  
public class QuickSort implements SortUtil.Sort{ ]W~M?1 }  
v4uQ0~k~X  
/* (non-Javadoc) ?:l:fS0:{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sz')1<  
*/ p:{L fQ  
public void sort(int[] data) { Qm"~XP  
quickSort(data,0,data.length-1); ;:J"- p  
} /7,@q?v  
private void quickSort(int[] data,int i,int j){ `_ZbA#R,  
int pivotIndex=(i+j)/2; 48G^$T{  
file://swap BC1smSlJ  
SortUtil.swap(data,pivotIndex,j); ;4/ n~  
k+je-%hPj  
int k=partition(data,i-1,j,data[j]); .Zs.O/  
SortUtil.swap(data,k,j); erTly2-SJ  
if((k-i)>1) quickSort(data,i,k-1); 5xNOIOpDB  
if((j-k)>1) quickSort(data,k+1,j); a[sdYZ  
S==0/  
} dXsL0r*c  
/** $-!7<a-  
* @param data hjk]?MC  
* @param i ,kYX|8SO  
* @param j bu \(KR$s  
* @return EqIs&){  
*/ O~ x{p,s U  
private int partition(int[] data, int l, int r,int pivot) { ;<E?NBV^  
do{ ]rg-=Y k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ymqn1ja1  
SortUtil.swap(data,l,r); "@5{=  
} ,lFzL3'_0x  
while(l SortUtil.swap(data,l,r); v{*2F  
return l; |Dq?<Ha  
} Ju;^^  
]_|%!/_  
} "e>9R'y  
YWV)C?5x&  
改进后的快速排序: d0zp89BEn  
UX|3LpFX&I  
package org.rut.util.algorithm.support; t0P_$+w.>  
Y(K`3? A  
import org.rut.util.algorithm.SortUtil; 55y{9.n*  
-JFW ,8=8  
/** >Kl_948  
* @author treeroot aE"dpYQ  
* @since 2006-2-2 1}ifJ~)5S  
* @version 1.0 tO"AeZe%|  
*/ 4U'sBaY!K  
public class ImprovedQuickSort implements SortUtil.Sort { ATmyoN2@>  
,5 3`t  
private static int MAX_STACK_SIZE=4096; j0 Os]a  
private static int THRESHOLD=10; 19oyoi"  
/* (non-Javadoc) d+ $:u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3(.Y>er%U  
*/ k{ZQM  
public void sort(int[] data) { [W <j  
int[] stack=new int[MAX_STACK_SIZE]; LHA :frC  
5C*- v,hF  
int top=-1; A L |,\s  
int pivot; w^3S6lK  
int pivotIndex,l,r; < mFU T  
7nW <kA  
stack[++top]=0; ^d(gC%+!u  
stack[++top]=data.length-1; .O+,1&D5  
&/otoAr(  
while(top>0){ _ph1( !H$  
int j=stack[top--]; j^f54Ky.  
int i=stack[top--]; Gs04)KJm<  
$h=v ;1"  
pivotIndex=(i+j)/2; vJx( lU`Y  
pivot=data[pivotIndex]; (gcy3BX;  
|&bucG=  
SortUtil.swap(data,pivotIndex,j); WBzPSnS2  
L` rrT   
file://partition EgzdRB\Cf  
l=i-1; {sq:vu@NC  
r=j; 9]/:B8k  
do{ s,Fts3+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $V/Ke  
SortUtil.swap(data,l,r); b1."mT!p  
} G2|G}#E  
while(l SortUtil.swap(data,l,r); , BZ(-M  
SortUtil.swap(data,l,j); 0+e 0<'  
2:yXeSeA  
if((l-i)>THRESHOLD){ X1V~.k vt)  
stack[++top]=i; hOdU%  
stack[++top]=l-1; a785xSUV  
} Wm)Id_  
if((j-l)>THRESHOLD){ I: MrX  
stack[++top]=l+1; uOd1:\%*  
stack[++top]=j; 0+w(cf~6  
} gh^w !tH3  
3 "Qg"\  
} ?TmVLny  
file://new InsertSort().sort(data); %?S[{ 4A&  
insertSort(data); v+<4?]EJ  
} sdgI ,  
/** Az>r}*F Gr  
* @param data `P*wZKlW  
*/ ,. <c|5R  
private void insertSort(int[] data) { BcQw-<veu  
int temp; X%7l! k[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RYl\Q,#  
} 4 .(5m\s!  
} aH, NS   
} %[o($a$  
'#QZhz(+  
} !y2yS/  
#TeAw<2U  
归并排序: eqWs(`  
@TzUc E  
package org.rut.util.algorithm.support; 7p{uRSE4._  
OO,%zwgt  
import org.rut.util.algorithm.SortUtil; #N y+6XM  
CT<z1)#@^  
/** " #U-*Z7  
* @author treeroot 'P%&*%  
* @since 2006-2-2 wx2 z9Q  
* @version 1.0 QG@Z%P~,E  
*/ lJS3*x#H  
public class MergeSort implements SortUtil.Sort{ sLK$H|%>m  
izu_KBzy  
/* (non-Javadoc) =">0\#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v|3mbApv  
*/ C9>^!?>  
public void sort(int[] data) { 7Q&S [])  
int[] temp=new int[data.length]; 3B$|B,  
mergeSort(data,temp,0,data.length-1); v.gAi6  
} :e}j$v F  
7sVO?:bj}  
private void mergeSort(int[] data,int[] temp,int l,int r){ P(L iH  
int mid=(l+r)/2; 0]GenT"   
if(l==r) return ; <jLL2-5r0  
mergeSort(data,temp,l,mid); w.=rea~  
mergeSort(data,temp,mid+1,r);  4NIb_E0  
for(int i=l;i<=r;i++){ aq(i^d  
temp=data; Kzwe36O;?  
} yv$hIU2X  
int i1=l; $5Rx>$~+d  
int i2=mid+1; B? XK;*])  
for(int cur=l;cur<=r;cur++){ oS_YQOoD  
if(i1==mid+1) @?t+O'&  
data[cur]=temp[i2++]; A "'h0D  
else if(i2>r) ~ D/1U)kt  
data[cur]=temp[i1++]; N4WX}  
else if(temp[i1] data[cur]=temp[i1++]; A 0;ng2&  
else e_1L J  
data[cur]=temp[i2++]; xi)M8\K  
} 1XHE:0!dQ  
} ?|n@ %'  
vOtILL6  
} > V >GiSni  
%V#? 1{  
改进后的归并排序: 0P;LH3sx  
Nlu]f-i':  
package org.rut.util.algorithm.support; t^~itlE{  
r[2*K 9  
import org.rut.util.algorithm.SortUtil; sAF="uB  
F-D$Y?m  
/** t\n'Kuk`  
* @author treeroot 2>Qy*  
* @since 2006-2-2 [X@JH6U r  
* @version 1.0 DJ!pZUO{  
*/ Pup%lO`.0  
public class ImprovedMergeSort implements SortUtil.Sort { =n8M'  
6ywO L'OBM  
private static final int THRESHOLD = 10; mdcsL~R  
J{n A ?[  
/* )6px5Vwz  
* (non-Javadoc) iD>H{1 h  
* NpS =_QeNw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IPt !gSp  
*/ z|$9%uz"  
public void sort(int[] data) { FY/F}C,o  
int[] temp=new int[data.length]; U8<C4  
mergeSort(data,temp,0,data.length-1); s/P+?8'9  
} _k(&<1i  
>g{b'Xx  
private void mergeSort(int[] data, int[] temp, int l, int r) { /!*=*  
int i, j, k; 0sF|Y%N  
int mid = (l + r) / 2; YuoIhT  
if (l == r) `9acR>00$  
return; d$n<^ ~Z  
if ((mid - l) >= THRESHOLD) Z!l]v.S  
mergeSort(data, temp, l, mid); Nema>T]  
else G"Hj$  
insertSort(data, l, mid - l + 1); #E_<}o  
if ((r - mid) > THRESHOLD) #+|0o-  
mergeSort(data, temp, mid + 1, r); qga?-oz,<6  
else q&LCMnv"P  
insertSort(data, mid + 1, r - mid); ylQ9Su>o  
A}_pJH  
for (i = l; i <= mid; i++) { A5sz[k  
temp = data; J58S8:c  
} ^RYq !l$  
for (j = 1; j <= r - mid; j++) { Nc?'},  
temp[r - j + 1] = data[j + mid]; KD- -w(4  
} `A8ErfA  
int a = temp[l]; sR)jZpmC(  
int b = temp[r]; 9d!mGnl  
for (i = l, j = r, k = l; k <= r; k++) { nt%p@e!,  
if (a < b) { Hv%$6,/*v  
data[k] = temp[i++]; V$dhiP z  
a = temp; Fj"/jdM  
} else { pfFHuS~  
data[k] = temp[j--]; |ZOdfr4uW  
b = temp[j]; 9xFI%UOb#  
} X<g }F[Y  
} `X<a(5[vV3  
} MXDUKh7v3  
Ms-)S7tMz  
/** "ZFH_5<  
* @param data #WAX&<m  
* @param l a TPq1u  
* @param i v3<q_J'qT  
*/ Xx\,<8Xn  
private void insertSort(int[] data, int start, int len) { e -b>   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GH`y-Ul'K  
} 4^:$|\?]  
} (ki= s+W-  
} 0!tuUn  
} xT!<x({  
QH?sx k2  
堆排序: Bi>]s%zp  
s5)y %, E  
package org.rut.util.algorithm.support; %N0m$*  
i>dFpJ  
import org.rut.util.algorithm.SortUtil; jWdZ ]0m  
g2A#BMe'.$  
/** >B;KpO"+m  
* @author treeroot ]kF1~kXBe  
* @since 2006-2-2 + f:!9)C  
* @version 1.0 zU_ dk'&,  
*/ %OP|%^2  
public class HeapSort implements SortUtil.Sort{ iU(B#ohW"  
e&!8UYP  
/* (non-Javadoc) Qraa0]56  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #qeC)T  
*/ *eI{g  
public void sort(int[] data) { 4 =T_h`  
MaxHeap h=new MaxHeap(); 8]rObT9>  
h.init(data); RF~G{wz  
for(int i=0;i h.remove(); </aQ  
System.arraycopy(h.queue,1,data,0,data.length); "F4 3q8P  
} ?-8DS5  
h.NCG96S  
private static class MaxHeap{ 8q; aCtei  
%P:|B:\<  
void init(int[] data){ [6Sk>j  
this.queue=new int[data.length+1]; vG\ b `  
for(int i=0;i queue[++size]=data; @jrxbo;5  
fixUp(size); O2"V'(  
} ln8es{q  
} %,zHS?)l  
r|i)  
private int size=0; ^dE[ ;  
n~tb z"&  
private int[] queue; G\^<MR|  
O- LwX >  
public int get() { M}q;\}  
return queue[1];  QS1lg  
} ($W%&(:/  
}>V=J aG  
public void remove() { w\{#nrhYU  
SortUtil.swap(queue,1,size--); hTmJ ~m'J  
fixDown(1); 6\`8b&'n  
} i'\-Y]?[  
file://fixdown ?CcX>R-/  
private void fixDown(int k) { D0z[h(m  
int j; F/3L^k]  
while ((j = k << 1) <= size) { B+Ft  >  
if (j < size %26amp;%26amp; queue[j] j++; KVUub'k  
if (queue[k]>queue[j]) file://不用交换 $`lm]} {&  
break; ~$hR:I1  
SortUtil.swap(queue,j,k); .?LRt  
k = j; k!'+7K.  
} MU\Pggs  
} #)]/wqPoW  
private void fixUp(int k) { mIqm/5  
while (k > 1) { '?g&);4)k-  
int j = k >> 1; 0Ng?U+6  
if (queue[j]>queue[k]) ;zV<63tW  
break; uX]]wj-R3  
SortUtil.swap(queue,j,k); <K,X5ctM}  
k = j; eZ-fy,E  
} @u: `  
} w~Nat7nD  
Cpy&2o-%v  
} }X/YMgJ  
_6'@#DN  
} c27(en(  
q8FpJ\  
SortUtil: rS8\Vf]F  
fNfa.0 s  
package org.rut.util.algorithm; Ajo IL  
oN%zpz;OR  
import org.rut.util.algorithm.support.BubbleSort; %r*,m3d  
import org.rut.util.algorithm.support.HeapSort; %~8f0B|im  
import org.rut.util.algorithm.support.ImprovedMergeSort; S ?J(VJqE  
import org.rut.util.algorithm.support.ImprovedQuickSort; `"<hO 'WU  
import org.rut.util.algorithm.support.InsertSort; lP*=4Jh  
import org.rut.util.algorithm.support.MergeSort; `AvK=]  
import org.rut.util.algorithm.support.QuickSort; ,np|KoG|M  
import org.rut.util.algorithm.support.SelectionSort; 5FF28C)>/  
import org.rut.util.algorithm.support.ShellSort; V>GJO(9  
?mSZQF:d@  
/** NJVkn~<  
* @author treeroot dQ9W40g1  
* @since 2006-2-2 1eEML"  
* @version 1.0 }pnp._j  
*/ z( }w|  
public class SortUtil { -;FAS3(wy  
public final static int INSERT = 1; ;Krb/qr4_  
public final static int BUBBLE = 2; x'..j5  
public final static int SELECTION = 3; x%HxM~&  
public final static int SHELL = 4; ]<L~f~vU  
public final static int QUICK = 5; g j]8/~lr  
public final static int IMPROVED_QUICK = 6; 5\w*W6y  
public final static int MERGE = 7; 78~/1-  
public final static int IMPROVED_MERGE = 8; m^3j|'mG  
public final static int HEAP = 9; 11kyrv  
jb{9W7;RL  
public static void sort(int[] data) { *'aouS/?<6  
sort(data, IMPROVED_QUICK); dU2;   
} !`1m.  
private static String[] name={ O:pg+o&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |v5 ge3-  
}; ~I%164B+/  
nZ (wfNk  
private static Sort[] impl=new Sort[]{ =&qH%S6  
new InsertSort(), >5"e<mwD7d  
new BubbleSort(), E)f9`][  
new SelectionSort(), gA}<Y  
new ShellSort(), 4VwMl)8ic  
new QuickSort(), S]~5iO_bst  
new ImprovedQuickSort(), b18f=<#  
new MergeSort(), j3T)gFP  
new ImprovedMergeSort(), ,4 _H{+M  
new HeapSort() m<kJH<!j  
}; V2M4g  
1 A0BM  
public static String toString(int algorithm){ ~J> ;l s1  
return name[algorithm-1]; BHYguS^qz  
} .XiO92d9  
vyB{35p$  
public static void sort(int[] data, int algorithm) { vw(ecs^C  
impl[algorithm-1].sort(data); $p&eS_f  
} 3dLqlJ^7B  
+`>E_+Mp  
public static interface Sort { (C"q-0?n  
public void sort(int[] data); Xw<;)m  
} &=$f\O1Ty  
Dj'?12Onu=  
public static void swap(int[] data, int i, int j) { KG9-ac  
int temp = data; _~ei1 G.R  
data = data[j]; O! XSU,  
data[j] = temp; 6 w{_+=T  
} fjl 9*  
} LL)t)  
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