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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。 {8OCXus3m  
插入排序: "}!G!k:  
c|%6e(g"L  
package org.rut.util.algorithm.support; #S(Hd?34,  
ys~x $  
import org.rut.util.algorithm.SortUtil; ]oxZ77ciL  
/** d5.4l&\u  
* @author treeroot ;fJ.8C  
* @since 2006-2-2 ! z**y}<T  
* @version 1.0 99S ^f:t  
*/ OnK4] S5  
public class InsertSort implements SortUtil.Sort{ >bxS3FCX  
ZEQEx]Y  
/* (non-Javadoc) d@^ZSy>L2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '7/)Ot(  
*/ KP"+e:a%  
public void sort(int[] data) { ;,TFr}p`  
int temp; R=dC4;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %RVZD#zr  
} =I4lL]>  
} pJ=#zsE0  
} ,bd_:  
Bwrx*J  
} So;<6~  
@co S+t  
冒泡排序: B1gR5p0  
,_P-$lB  
package org.rut.util.algorithm.support; 83m3OD_y  
\^LFkp  
import org.rut.util.algorithm.SortUtil; i@q&5;%%  
6LZCgdS{  
/** NRuNKl.v  
* @author treeroot jCY %|  
* @since 2006-2-2 ]iWRo'  
* @version 1.0 FwK] $4*  
*/ [7-?7mp!B  
public class BubbleSort implements SortUtil.Sort{ l}h!B_P'  
K:M8h{Ua  
/* (non-Javadoc) IBGrt^$M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 54,er$$V  
*/ +3gp%`c4  
public void sort(int[] data) { =M1I>  
int temp; ]GS bjHsO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ LeQjvW9y  
if(data[j] SortUtil.swap(data,j,j-1); :s,Z<^5a)g  
} (:_$5&i7  
} kstIgcI  
} x2EUr,7  
} %>yL1BeA4  
M}a6Vu9  
} Z;i:](  
w xH7?tsf  
选择排序: RN1_S  
[GR; ?R5  
package org.rut.util.algorithm.support; Wzh`or  
m*pJBZxd  
import org.rut.util.algorithm.SortUtil; rsQtMtS2  
-@s#uA h  
/** )UR7i8]!0  
* @author treeroot ,2q-D&)\Z  
* @since 2006-2-2 >j/w@Fj  
* @version 1.0 o4X{L`m  
*/ 6'/ #+,d'  
public class SelectionSort implements SortUtil.Sort { XZ7Lk)IR  
WE?5ehEme  
/* +whDU2 "  
* (non-Javadoc) A&VG~r$  
* \dVOwr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HtFDlvdy]  
*/ wT@og|M  
public void sort(int[] data) { p+eh%2Jm  
int temp; )e{aN+  
for (int i = 0; i < data.length; i++) { AH^/V}9H  
int lowIndex = i; ^c|/*u  
for (int j = data.length - 1; j > i; j--) { s<Ziegmw|g  
if (data[j] < data[lowIndex]) { 7dWS  
lowIndex = j; It(_v  
} dN q$}  
} LVGe]lD  
SortUtil.swap(data,i,lowIndex); 1Mzmg[L8  
} 6Mf0`K  
} :Ye !w$r  
sC'` ~}C  
} -n 1 v3  
1}x%%RD_  
Shell排序: (QEG4&9  
[n@] r2g)3  
package org.rut.util.algorithm.support; >:-$+I  
X ?O[r3<  
import org.rut.util.algorithm.SortUtil; /uc>@!F  
{: /}NpA$  
/** P.cyO3l  
* @author treeroot N2G{<>=  
* @since 2006-2-2 f*Hr^b}`8  
* @version 1.0 %{W6PrY{  
*/ /ZX }Nc g  
public class ShellSort implements SortUtil.Sort{ =;L|gtH"  
pglVR </  
/* (non-Javadoc) 5xiEPh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *. t^MP  
*/ k$VlfQ'+  
public void sort(int[] data) { HS$r8`S?)  
for(int i=data.length/2;i>2;i/=2){ i8p6Xht  
for(int j=0;j insertSort(data,j,i); +`4A$#$+y  
} +@UV?"d  
} (7Qo  
insertSort(data,0,1); +T ?NH9  
} u*R_\*j@  
 ]~-r} `]  
/** "@kaHIf[  
* @param data 4i bc  
* @param j ]9-\~Mwh  
* @param i ICCc./l|  
*/ pAEx#ck  
private void insertSort(int[] data, int start, int inc) { V&i;\9  
int temp; 6@f-Glwg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9mgIUjz  
} RSds8\tk  
} c> af  
} N!32 wJ  
q4q6c")zp  
} PH"%kCI:  
neh(<>  
快速排序: !wNO8;(  
.543N<w  
package org.rut.util.algorithm.support; V]N?6\Op  
=xrv~  
import org.rut.util.algorithm.SortUtil; {$r[5%L\H  
mq[ug>  
/** & ~!Wym  
* @author treeroot "ta x?  
* @since 2006-2-2 HThcn1u~^b  
* @version 1.0 G`zm@QL  
*/ $"&JWT!#  
public class QuickSort implements SortUtil.Sort{ P$sxr  
eq"]%s  
/* (non-Javadoc) b2]Kx&!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Ee'Cm  
*/ 6Iw\c  
public void sort(int[] data) { o.\oA6P_  
quickSort(data,0,data.length-1); }i2V.tVB-  
} KU;9}!#  
private void quickSort(int[] data,int i,int j){ X@f}Q`{Ymj  
int pivotIndex=(i+j)/2; mqJ_W[y7  
file://swap }-fl$j?9E  
SortUtil.swap(data,pivotIndex,j); kN>!2UfNS  
KYP!Rs/j.  
int k=partition(data,i-1,j,data[j]); oE~Bq/p  
SortUtil.swap(data,k,j); xKC[=E>z  
if((k-i)>1) quickSort(data,i,k-1); qFNes)_r  
if((j-k)>1) quickSort(data,k+1,j); 'QIqBU'~  
M[uA@  
} '{`$#@a.  
/** EIQ p>|5  
* @param data N?>vd*  
* @param i  kwA$Z!Rn  
* @param j _l]fkk[T  
* @return j)GtEP<n#  
*/ )/EO&F  
private int partition(int[] data, int l, int r,int pivot) { ;'Nd~:-]  
do{ FE{FGM q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1r7y]FyH$  
SortUtil.swap(data,l,r); BCcjK6'  
} O#u=c1 ?:  
while(l SortUtil.swap(data,l,r); ~!3r&(  
return l; QVE6We  
} w'3iY,_ufC  
t.'!`5G  
} :Lug7bUVD  
jZ3fKyp#   
改进后的快速排序: jb;hcraR  
$lu t[o74  
package org.rut.util.algorithm.support; PJ'E/C)i  
Z87|Zl  
import org.rut.util.algorithm.SortUtil; UOmY-\ &c  
@Pzu^  
/** d&s9t;@=  
* @author treeroot uc"P3,M  
* @since 2006-2-2 .q3/_*  
* @version 1.0 iRi-cQVy  
*/ 5-xX8-ElYz  
public class ImprovedQuickSort implements SortUtil.Sort { ApXy=?fc  
78%~N`x7  
private static int MAX_STACK_SIZE=4096; lR6x3C H@  
private static int THRESHOLD=10; 3gj+%%!G\  
/* (non-Javadoc) ,$+V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M>8A\;"  
*/ B[?CbU  
public void sort(int[] data) { 3nnJ8zQ  
int[] stack=new int[MAX_STACK_SIZE]; 2oRg 2R}  
3% ;a)c;D  
int top=-1; >q1L2',pK  
int pivot; zeC RK+-  
int pivotIndex,l,r; f/Bp.YwL  
T+k{W6  
stack[++top]=0; cFnDmt I:  
stack[++top]=data.length-1; s)Cjc.Qs  
-kwXvYu\  
while(top>0){ '9j="R;  
int j=stack[top--]; k<{{*  
int i=stack[top--]; Z//+Gw<'  
aL&7 1^R,  
pivotIndex=(i+j)/2; -Z Ugx$  
pivot=data[pivotIndex]; #c?j\Y9nz  
QTXt8I  
SortUtil.swap(data,pivotIndex,j); i||]V*5n  
e`xdSi>E  
file://partition c%G{#}^2  
l=i-1; s<eb;Z2D  
r=j; a (b#  
do{ Midy"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?ztkE62t  
SortUtil.swap(data,l,r); (#RHB`h5  
} Y M\ K%rk  
while(l SortUtil.swap(data,l,r); {~s DYRX  
SortUtil.swap(data,l,j); @u]rWVy;\[  
SO(NVJh  
if((l-i)>THRESHOLD){ X4E%2-m@'  
stack[++top]=i; /1Q(b  
stack[++top]=l-1; u\{ g(li-I  
} 7/f3Z 1g  
if((j-l)>THRESHOLD){ ,J>5:ht(6  
stack[++top]=l+1; <55 g3>X  
stack[++top]=j; e<h~o!z a  
} xScLVt<\e  
qA$*YIlK  
} m{uxI za  
file://new InsertSort().sort(data); sq[iY  
insertSort(data); 'BPp ]R#{  
} X+}1  
/** ^!z [t\$  
* @param data _/!y)&4"  
*/ ?5 cI'  
private void insertSort(int[] data) { b7tOo7aH)  
int temp; u r@Z|5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yA(K=?sq  
} C{DvD'^  
} &2zq%((r  
} p2udm!)J  
.dQQoyR+O  
} G\r?f&  
mPP`xL?T  
归并排序: yH*6@P4:0=  
C[Dav&=^F  
package org.rut.util.algorithm.support; GJp85B!PlO  
x61U[/r  
import org.rut.util.algorithm.SortUtil; Fa_VKAq  
Zg`Mz _?  
/** >Ll$p 0W  
* @author treeroot JEgx@};O  
* @since 2006-2-2 QtqfG{  
* @version 1.0 !G}+E2fDA  
*/ D HT&,=  
public class MergeSort implements SortUtil.Sort{ b2=0}~LK  
3lq Mucr  
/* (non-Javadoc) gzD@cx?V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Css l{B  
*/ pOkLb #  
public void sort(int[] data) { (?! ,p^  
int[] temp=new int[data.length]; ;/*6U  
mergeSort(data,temp,0,data.length-1); LtKI3ou  
} Uyr3dN%*r  
eD Z8w  
private void mergeSort(int[] data,int[] temp,int l,int r){ V@QK  
int mid=(l+r)/2; 1#4PG'H  
if(l==r) return ; T'aec]u  
mergeSort(data,temp,l,mid); 2',w[I  
mergeSort(data,temp,mid+1,r); EmT`YNuc  
for(int i=l;i<=r;i++){ 1uk 0d`JL  
temp=data; rUjdq/I:Z  
} E|$Oha[  
int i1=l; :aIN9;  
int i2=mid+1; ?P7]u>H  
for(int cur=l;cur<=r;cur++){ Q!FLR>8  
if(i1==mid+1) M8b4NF_&  
data[cur]=temp[i2++]; rBN)a"  
else if(i2>r) i o3yLIy,  
data[cur]=temp[i1++]; 1lnU77;  
else if(temp[i1] data[cur]=temp[i1++]; [!VOw@uz  
else :9|W#d{o  
data[cur]=temp[i2++]; 8Z2.`(3c[  
} :` $@}GI  
} ozr9>b>M  
Pu>N_^  C  
} t=#Pya  
41 vL"P K  
改进后的归并排序: qUF1XJZ }z  
?Jtg3AY  
package org.rut.util.algorithm.support; `4CWE_k  
C+MSVc  
import org.rut.util.algorithm.SortUtil; i$-#dc2qY  
6b Z[Kt  
/** H%z@h~s>  
* @author treeroot i3 )xX@3  
* @since 2006-2-2 !|m9|  
* @version 1.0 <V_7|)'/A  
*/ u:` y]  
public class ImprovedMergeSort implements SortUtil.Sort { hGP1(pH.  
ZcryAm:I  
private static final int THRESHOLD = 10; =`I?mn&  
LN!W(n(  
/* %TK&)Q% h5  
* (non-Javadoc) C 7n Kk/r  
* mT_GrIl[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ds5N Ap:x  
*/ <4D%v"zRP  
public void sort(int[] data) { FUaNiAr[  
int[] temp=new int[data.length]; a%~yol0wO7  
mergeSort(data,temp,0,data.length-1); Gidkt;lj  
} L=7rDW)aa  
%N~;{!![p  
private void mergeSort(int[] data, int[] temp, int l, int r) { Gm&2R4)EP  
int i, j, k; }~*rx7p  
int mid = (l + r) / 2; qB JRS'6'9  
if (l == r) YIDg'a+z  
return; d1NE%hg3  
if ((mid - l) >= THRESHOLD) 5V|tXsy:  
mergeSort(data, temp, l, mid); SLA#= K  
else #S i|!  
insertSort(data, l, mid - l + 1); )Z:m)k>r;  
if ((r - mid) > THRESHOLD) $j !8?  
mergeSort(data, temp, mid + 1, r); +(AwSh!  
else [s %\.y(q  
insertSort(data, mid + 1, r - mid); 3o7xN=N  
@}G|R\2P  
for (i = l; i <= mid; i++) { HWR& C  
temp = data; kGj]i@(PA4  
} Vw?P.4  
for (j = 1; j <= r - mid; j++) { 7xR|_+%~K  
temp[r - j + 1] = data[j + mid]; K-<n`zg3  
} a^*B5G1(&  
int a = temp[l]; f<=^ 4a  
int b = temp[r]; *lY+Yy(  
for (i = l, j = r, k = l; k <= r; k++) { > ";%2 u1  
if (a < b) { 7rPLnB]  
data[k] = temp[i++]; _3zU,qm+  
a = temp; iGyVG41U  
} else { %8g$T6E[<2  
data[k] = temp[j--]; 1+FYjh!2t  
b = temp[j]; L<"k 7)k  
} HWOek"}Z[  
} H7J`]nr6  
} w8U2y/:>  
7:ckq(89  
/** i:R!T,  
* @param data cyDiA(ot&  
* @param l _82<| NN:  
* @param i Mn-<51.%  
*/ q^u6f?B  
private void insertSort(int[] data, int start, int len) { %~ ;nlDw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [p2g_bI8yK  
} 4b]IazL)  
} Hu[8HzJo  
} (di)`D5Q  
} 1 VPg`+o  
ks)fQFSbu  
堆排序: @+[Y0_  
@2QJm  
package org.rut.util.algorithm.support; *G8'Fjin'T  
Oz_b3r  
import org.rut.util.algorithm.SortUtil; k*A4;Bm  
l!xgtP K  
/** +#&el//  
* @author treeroot :-W$PIBe  
* @since 2006-2-2 d@_'P`%-  
* @version 1.0 H@VBP Q}Q  
*/ ]W89.><%14  
public class HeapSort implements SortUtil.Sort{ 7Y|Wy Oq  
F#zQQ)(Pf  
/* (non-Javadoc) bcGn8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0j-F6a*p'1  
*/ roK4RYJ7)  
public void sort(int[] data) { !XG/,)A  
MaxHeap h=new MaxHeap(); =|DkD- O  
h.init(data); XFLjVrX[  
for(int i=0;i h.remove(); RXCygPT   
System.arraycopy(h.queue,1,data,0,data.length); gK]T}  
} +'{:zN5m  
v= 8~ZDY  
private static class MaxHeap{ hfP(N_""S  
.pNq-T  
void init(int[] data){ $n_sGr  
this.queue=new int[data.length+1]; r(`8A:#d  
for(int i=0;i queue[++size]=data; qrORP3D@  
fixUp(size); AmrJ_YP/t~  
} Rwi5+;N  
} `zV-1)=  
0Zp<=\!;  
private int size=0; [jmAMF<F  
's%ct}y\J  
private int[] queue; f{oxF?|89  
\t 7zMp  
public int get() { Hr_x~n=w  
return queue[1]; $;g%S0:3)  
} Iclan\q#y  
>O[^\H!\  
public void remove() { ]'z ^Kt5S  
SortUtil.swap(queue,1,size--);  4pOc`  
fixDown(1); e^ K=8IW  
} A&@jA5Jb  
file://fixdown [~rk`  
private void fixDown(int k) { [pyXX>:M  
int j; }j5@\c48  
while ((j = k << 1) <= size) { 5la]l  
if (j < size %26amp;%26amp; queue[j] j++; 1Y"y!\t7G  
if (queue[k]>queue[j]) file://不用交换 '$&(+>)z `  
break; >0G}, S  
SortUtil.swap(queue,j,k); nD{;4$xP`  
k = j; "{1}  
} 7G #e~,M5  
} &JzF   
private void fixUp(int k) { b J5z??  
while (k > 1) { x'PjP1  
int j = k >> 1; Xf/<.5A  
if (queue[j]>queue[k]) GA@Q:n8UuR  
break; zAdVJ58H  
SortUtil.swap(queue,j,k); [(ib9_`A'1  
k = j; IF21T  
} KPvYq?F>4  
} BN> $LL  
,lGwW8$R  
} #1lS\!  
i: uA&9  
} h 7P?n.K  
_|#|mb4Fe  
SortUtil: E MbI\=>yS  
]cY'6'}Hz  
package org.rut.util.algorithm; @(5RAYRV  
tQ<2K*3]  
import org.rut.util.algorithm.support.BubbleSort; ?B4QTx9B  
import org.rut.util.algorithm.support.HeapSort; Y2$`o4*3  
import org.rut.util.algorithm.support.ImprovedMergeSort; aWK7 -n  
import org.rut.util.algorithm.support.ImprovedQuickSort; QU;C*}0Zl  
import org.rut.util.algorithm.support.InsertSort; yodrX&"  
import org.rut.util.algorithm.support.MergeSort; DcM+K@1E4^  
import org.rut.util.algorithm.support.QuickSort; `I:,[3_/   
import org.rut.util.algorithm.support.SelectionSort; eEFT(e5.>3  
import org.rut.util.algorithm.support.ShellSort; ^IZ0M1&W;  
*wx^mB9  
/** nUu|}11(  
* @author treeroot p ;01a  
* @since 2006-2-2 akoKx)(<  
* @version 1.0 C#cEMKa  
*/ aM1JG$+7G  
public class SortUtil { `-\JjMSQ1  
public final static int INSERT = 1; AV`7> @  
public final static int BUBBLE = 2; 9~ af\G  
public final static int SELECTION = 3; $h f\ #'J  
public final static int SHELL = 4; ~1!kU 4  
public final static int QUICK = 5; t;6/bT-  
public final static int IMPROVED_QUICK = 6; &^>r<~]  
public final static int MERGE = 7; >U.uRq  
public final static int IMPROVED_MERGE = 8; $5 [RR  
public final static int HEAP = 9; MM7gMAA.mz  
v2g+o KO]  
public static void sort(int[] data) { 06O  
sort(data, IMPROVED_QUICK); sP8B?Tn1W  
} |e(x< [s5  
private static String[] name={ p.olXP  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9)X<}*(qo  
}; {S~$\4vC!  
-|mRJVl8  
private static Sort[] impl=new Sort[]{ HN)QS5  
new InsertSort(), +r"$?bw '  
new BubbleSort(), m#p^'}]!;  
new SelectionSort(), =jh:0Q<43+  
new ShellSort(), 8tk`1E8!j  
new QuickSort(), bp_@e0  
new ImprovedQuickSort(), djM=QafB:C  
new MergeSort(), E$ rSrT(  
new ImprovedMergeSort(), {F[Xe_=#"  
new HeapSort() F*H}5yBp_:  
}; 9NAlgET  
GC2<K  
public static String toString(int algorithm){ b.+\qaR  
return name[algorithm-1]; c i>=45@J  
} yFqC-t-i  
&B C#u.^!  
public static void sort(int[] data, int algorithm) { ~Otf "<  
impl[algorithm-1].sort(data); on$a]zx'@  
} :SGQ4@BV  
6h%(0=^  
public static interface Sort { ]Re<7_xt  
public void sort(int[] data); g(^l>niF:  
} w8Yff[o  
\;<Y/sg  
public static void swap(int[] data, int i, int j) { NGu]|p  
int temp = data; E%N]t} }[  
data = data[j]; Heu@{t.[!D  
data[j] = temp; U$}]zaB  
} 2_C.-;!  
} *k -UQLJ  
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