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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。 R]e?<,"X  
插入排序: (]0JI1 d  
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package org.rut.util.algorithm.support; s/+@o:  
5LU8QHj3  
import org.rut.util.algorithm.SortUtil; ( /{Wu:e  
/** V dp wZ  
* @author treeroot )%lPa|7s  
* @since 2006-2-2 MG<kvx~2  
* @version 1.0 Lu!o!>b  
*/ UU')V  
public class InsertSort implements SortUtil.Sort{ &U%AVD[  
B2Qt tcJ  
/* (non-Javadoc) -ju&"L B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !, Y1FC  
*/ ]ovP^]]V  
public void sort(int[] data) { %"|I` m  
int temp; 7 sv 3=/`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &GF@9BXI3  
} v< qN -zG  
}  }t}y  
} R&Y+x;({  
Y=+pz^/"  
} Z _W.iBF  
U^iNOMs?  
冒泡排序: 7 lc -  
X6I"&yct  
package org.rut.util.algorithm.support; W8{g<. /  
53efF bo  
import org.rut.util.algorithm.SortUtil; )Y.H*ca  
Dy`;]-b6u  
/** hKo& ZWPq  
* @author treeroot w1tWyKq  
* @since 2006-2-2 v4c*6(m  
* @version 1.0 6v(?Lr`D  
*/ 0;9X`z J  
public class BubbleSort implements SortUtil.Sort{ bzYj`t?  
/BEE.`6yI5  
/* (non-Javadoc) i+rh&,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;7,>2VTm  
*/ />^sGB  
public void sort(int[] data) { M&auA  
int temp; =^a Ngq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8SH&b8k<<  
if(data[j] SortUtil.swap(data,j,j-1); +9EG6"..@H  
} {v CB$@/o  
} YU >NGC]}d  
} 8zhr;Srt  
} 2z*EamF  
;W"=s79  
} nh"8on]M~  
VY9o}J>,w  
选择排序: Owd{;  
LT+QW  
package org.rut.util.algorithm.support; lqaOLZH  
4^*+G]]wZ~  
import org.rut.util.algorithm.SortUtil; 3 UXaA;  
MKiP3kt8  
/** P|U9f6^3  
* @author treeroot y6#AL<W@=  
* @since 2006-2-2 +g.lLb*#  
* @version 1.0 yyZs[5Q  
*/ fX:=_c   
public class SelectionSort implements SortUtil.Sort { PvHX#wJ  
P:8 qm DXo  
/* /9QC$Z):<  
* (non-Javadoc) Kg8n3pLAX  
* n?a?U:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X}f u $2  
*/ [N=v=J9  
public void sort(int[] data) { PNgdWf3  
int temp; 7cMHzh k^  
for (int i = 0; i < data.length; i++) { UiE 1TD{  
int lowIndex = i; Ea<kc[Q  
for (int j = data.length - 1; j > i; j--) { &m5FYm\  
if (data[j] < data[lowIndex]) { MP6Py@J45  
lowIndex = j; BmhIKXE{*  
} woyn6Z1JQ  
} *!5X!\e_  
SortUtil.swap(data,i,lowIndex); $:}sm0;  
} tX.fbL@ T  
} ` zoC++hx  
UD0#Tpd7  
} HSG7jC'_  
YJm64H,[  
Shell排序: KAI/*G\z  
&x.n>O  
package org.rut.util.algorithm.support; [sc4ULS &  
2~B9 (|  
import org.rut.util.algorithm.SortUtil; 7;rf$\-&  
~TfN*0  
/** {lO>i&mx  
* @author treeroot lHI?GiB@  
* @since 2006-2-2 P9f,zM-  
* @version 1.0 crlCN  
*/ 3uy^o  
public class ShellSort implements SortUtil.Sort{ Lk`,mjhk  
U$m[{r2M  
/* (non-Javadoc) :pw6#yi8`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N= G!r  
*/ \N a  
public void sort(int[] data) { H[[#h=r0f  
for(int i=data.length/2;i>2;i/=2){ /oC@:7  
for(int j=0;j insertSort(data,j,i); u5I#5  
} \J-}Dp\0b  
} LB\+*P6QM  
insertSort(data,0,1); [J\! 2\Oo  
} s$ZKd  
Xf6\{  
/** ,8&ND864v  
* @param data "NvB@>S  
* @param j <!a%GI  
* @param i W8N__  
*/ %(ms74R+  
private void insertSort(int[] data, int start, int inc) { %T,cR>lw  
int temp; cL+bMM$4r~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &pFP=|Pq  
} XF i!=|F  
} PL*1-t?#  
} |0$7{nQ  
z|v/h UrD  
} !n`Y^  
1qE*M7_:E>  
快速排序: +z O.|`+  
$^5c8wT  
package org.rut.util.algorithm.support; %ou@Y`  
"7}e~*bM?`  
import org.rut.util.algorithm.SortUtil; tE"IE$$1  
,jJbQIu#  
/** PNRZUZ4Z|  
* @author treeroot V]6CHE:BS  
* @since 2006-2-2 6g 5Lf)yG  
* @version 1.0 ueLdjASJ  
*/ :89AYqT"  
public class QuickSort implements SortUtil.Sort{ zw}Wm4OH  
_qjkiKm?1F  
/* (non-Javadoc) #sb@)Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S&{#sl#e  
*/ @% .;}tC  
public void sort(int[] data) { u$ a7  
quickSort(data,0,data.length-1); aB2t/ua  
} gh<2i\})'  
private void quickSort(int[] data,int i,int j){ pe>[Ts`2F  
int pivotIndex=(i+j)/2; q4]Qvf>  
file://swap eK =v<X  
SortUtil.swap(data,pivotIndex,j); JB9s# `  
]?UK98uS\A  
int k=partition(data,i-1,j,data[j]); P|rreSv*  
SortUtil.swap(data,k,j); `8b4P>';O'  
if((k-i)>1) quickSort(data,i,k-1); gmdA1$c  
if((j-k)>1) quickSort(data,k+1,j); U@"f(YL+"  
63T4''bwu  
} ^wMZG'/  
/** m?`?T   
* @param data Qkx}A7sK  
* @param i qqr]S^WW  
* @param j 8w9?n3z=}  
* @return 04@?Jb1*  
*/ Y%#r&de  
private int partition(int[] data, int l, int r,int pivot) { Ae^ Idz  
do{ \KkAU6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %d2\4{{S  
SortUtil.swap(data,l,r); R[f@g;h  
} -b'a-?  
while(l SortUtil.swap(data,l,r); c-=z<:Kf  
return l; k*!f@ M  
} CNrK]+>  
;)'  
} {/q4W; D  
x|U[|i,;  
改进后的快速排序: i~uoK7o|G  
qTrb)95  
package org.rut.util.algorithm.support; m!^z{S  
);1UbqVPD  
import org.rut.util.algorithm.SortUtil; M:cW/&ZJ  
'<%;Nv  
/** zi= gOm  
* @author treeroot E2yL9]K2  
* @since 2006-2-2 N2\{h(*u  
* @version 1.0 Ztj~Q9mu  
*/ nYts[f9e  
public class ImprovedQuickSort implements SortUtil.Sort { Iv51,0A  
OuV f<@a  
private static int MAX_STACK_SIZE=4096; faPgp  
private static int THRESHOLD=10; &v.Nj9{zi  
/* (non-Javadoc) 92 =huV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I9g!#lbl  
*/ wfrSI:+>  
public void sort(int[] data) { QRAw#  
int[] stack=new int[MAX_STACK_SIZE]; X'.*I])  
WzdE XcY  
int top=-1; P= nu&$;  
int pivot; K4j2xSGeo  
int pivotIndex,l,r; $\vTiS'  
YLFM3IaP  
stack[++top]=0; hWfC"0  
stack[++top]=data.length-1; XS`=8FQ  
oz#;7 ?9  
while(top>0){ jR@J1IR<  
int j=stack[top--]; ,R5z`O  
int i=stack[top--]; x5"F`T>Y  
^>tqg^  
pivotIndex=(i+j)/2; bZd)4  
pivot=data[pivotIndex]; ;.#l[  
Ub%1OQ  
SortUtil.swap(data,pivotIndex,j); m5KAKpCR,  
x'hUw*  
file://partition 5#hsy;q;[  
l=i-1; 3iv;4e ;  
r=j; y-=YXqj  
do{ +Qo]'xKr  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X+;{&Efrl  
SortUtil.swap(data,l,r); &#DKB#.2  
} GZk{tTv  
while(l SortUtil.swap(data,l,r); z2Kvp"-}  
SortUtil.swap(data,l,j); VVVw\|JB>  
 v+qHH8  
if((l-i)>THRESHOLD){ ebmU~6v k  
stack[++top]=i; 8*m=U@5]  
stack[++top]=l-1; a+#Aitd  
} 3_cZaru  
if((j-l)>THRESHOLD){ ;+Uc} =  
stack[++top]=l+1; CZ.XEMN\  
stack[++top]=j; ^7$V>|  
} r8Pdk/CW^  
`vj"HhC  
} 4M{]YZMw8  
file://new InsertSort().sort(data); N\Li/  
insertSort(data); ';.n#  
} FNB4YZ6  
/** SJ;Kjq.Qo  
* @param data AW< z7B D  
*/ <Z58"dg.5  
private void insertSort(int[] data) { +!9&zYu!  
int temp; ewD=(yr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sUTh}.[5  
} A<|]>[ax  
} PS3%V_2  
} vhot-rBN  
R<FW?z*  
} f )K(la^'  
[S#QGB19  
归并排序: gW(7jFl  
-&3mOn& (1  
package org.rut.util.algorithm.support;  ZXL  
n\G88)Dv`V  
import org.rut.util.algorithm.SortUtil; P@pJ^5Jf  
6-vQQ-\  
/** B9Y*'hmI  
* @author treeroot _8eN^oc%  
* @since 2006-2-2 wS%aN@ay3  
* @version 1.0 pXBlTZf  
*/ r"aJ&~8::W  
public class MergeSort implements SortUtil.Sort{ w=MiJr#3^  
dB%q`7O  
/* (non-Javadoc) )Fw{|7@N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -D-]tL6w  
*/ iD-,C`  
public void sort(int[] data) { Pe<}kS m4  
int[] temp=new int[data.length]; $Z!7@_Ys  
mergeSort(data,temp,0,data.length-1); ghu8Eg,Y  
} >L{s[pLJ  
VvJ]*D+e  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7B| #*IZe  
int mid=(l+r)/2; F^bzE5#  
if(l==r) return ; oiL^$y/:;z  
mergeSort(data,temp,l,mid); |wYOO(!  
mergeSort(data,temp,mid+1,r); m\O|BMHn  
for(int i=l;i<=r;i++){ 9u&q{I  
temp=data; 1y)|m63&  
} uv$t>_^  
int i1=l; !W3bHy:C"  
int i2=mid+1; 3+` <2TP  
for(int cur=l;cur<=r;cur++){ E"{2R>mU~  
if(i1==mid+1) JDA:)[;  
data[cur]=temp[i2++]; +_h1JE_}D  
else if(i2>r) FPB O=?H.  
data[cur]=temp[i1++]; fZ)M Dq  
else if(temp[i1] data[cur]=temp[i1++]; 1tMs\e-  
else gPrIu+|F  
data[cur]=temp[i2++]; _ Uxt9 X  
} .tny"a&  
} 5C^oqUZ  
+zz\*  
} o;D[ F  
MsL*\)*s  
改进后的归并排序: W@( EEMhw  
Vs0T*4C=n  
package org.rut.util.algorithm.support; !L)~*!+Gf  
qbwX*E~ ;  
import org.rut.util.algorithm.SortUtil; (E.,kcAJ  
(g8<"< N?  
/** $B3<"  
* @author treeroot wx,yx3c (  
* @since 2006-2-2 r?l7_aBv3  
* @version 1.0 & 1:_+  
*/ j~)GZV  
public class ImprovedMergeSort implements SortUtil.Sort { \k69 S/O  
N7b+GqYpF>  
private static final int THRESHOLD = 10; }{(dG7G+  
F/ODV=J-  
/* 2zz7/]?Q   
* (non-Javadoc) w>]?gN?8Fe  
* \UF/_'=K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5/ee&sJR  
*/ A=z+@b6  
public void sort(int[] data) { %FDv6peH  
int[] temp=new int[data.length]; kX2bU$1Q,i  
mergeSort(data,temp,0,data.length-1); z!<X{& e  
} ?C[W~m P  
E W {vF|  
private void mergeSort(int[] data, int[] temp, int l, int r) { d*e0/#s  
int i, j, k; k\qF> =  
int mid = (l + r) / 2; ka^sOC+Y  
if (l == r) ^J TrytIB  
return; i`Tp +e@a>  
if ((mid - l) >= THRESHOLD) xxsax/h  
mergeSort(data, temp, l, mid); BXCB/:0  
else 4NY}=e5  
insertSort(data, l, mid - l + 1); i Sm .E  
if ((r - mid) > THRESHOLD) O_M2Axm  
mergeSort(data, temp, mid + 1, r); nF Mc'm  
else h "MiD  
insertSort(data, mid + 1, r - mid); 94>EA/+Ek  
?51Y&gOEZ  
for (i = l; i <= mid; i++) { tTMYqg zUk  
temp = data; u?J!3ZEtb  
} 6dCS Gb  
for (j = 1; j <= r - mid; j++) { *u i!|;  
temp[r - j + 1] = data[j + mid]; /{[Y l[{"<  
} C3XB'CL6  
int a = temp[l]; aw\\oN*  
int b = temp[r]; $y0[AB|V  
for (i = l, j = r, k = l; k <= r; k++) { Em%0C@C  
if (a < b) { CWTPf1?eB  
data[k] = temp[i++]; %z0;77[1I  
a = temp; &$1ifG   
} else { "}ms|  
data[k] = temp[j--]; U/W<Sa\`  
b = temp[j]; fbG+.'  
} *t)Y@=k3>  
} GQ@`qYLZ+  
} klwC.=?(j"  
ji|+E`Nii  
/** _V jfH2Y  
* @param data Ap :mc:  
* @param l <Va7XX%>  
* @param i H8'q Y  
*/ 9_h  V1:  
private void insertSort(int[] data, int start, int len) { /#lqv)s'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6D=9J%;  
}  4 Wb^$i!  
} K4G43P5q`  
} <r@w`G  
} ^Uj\s /  
ag_RKlM3  
堆排序: \6{w#HsP8  
o4^|n1vN  
package org.rut.util.algorithm.support; /:+f5\"-b  
nQtp4  
import org.rut.util.algorithm.SortUtil; \Nvu[P  
8p;|&7  
/** )w t mc4'  
* @author treeroot @(m+B\  
* @since 2006-2-2 c*k%r2'  
* @version 1.0 M2$.Y om[  
*/ A"V($:>U  
public class HeapSort implements SortUtil.Sort{ XK";-7TZt  
~l^Q~W-+  
/* (non-Javadoc) Fx3CY W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c)b/"  
*/ MR?5p8S#g  
public void sort(int[] data) { o#^(mGj_.  
MaxHeap h=new MaxHeap(); ]UMt  
h.init(data); TEzMFu+V  
for(int i=0;i h.remove(); 6w"_sK?  
System.arraycopy(h.queue,1,data,0,data.length); ZNKopA(=|%  
} $$5E+UDOs  
~OE1Sd:2  
private static class MaxHeap{ >,9ah"K_x  
xnR;#Yc  
void init(int[] data){ j@Ta\a-,x  
this.queue=new int[data.length+1]; Qvx[F:#Tk  
for(int i=0;i queue[++size]=data; e2dg{n$6"  
fixUp(size); ,\Q^[e!m~  
} ROWI.|  
} R^ln-H;  
+wHrS}I#g  
private int size=0; 0p31C7!  
rP7[{'%r  
private int[] queue; it#,5#Y:  
%aB RL6  
public int get() { blk4@pg  
return queue[1]; YjR`}rdwo  
} JG:li} N  
Qf .ASC   
public void remove() { dc+U #]tS  
SortUtil.swap(queue,1,size--); ]_EJ "'x  
fixDown(1); %`# HGji)  
} (Ev=kO  
file://fixdown j(>~:9I`  
private void fixDown(int k) { A hCqQ.O71  
int j; e*!0|#-  
while ((j = k << 1) <= size) { JnY.]:  
if (j < size %26amp;%26amp; queue[j] j++; DmA~Vj!a^y  
if (queue[k]>queue[j]) file://不用交换 (rE.ft5$9  
break; I)AbH<G{  
SortUtil.swap(queue,j,k); EW~M,+?  
k = j; IyPk3N  
} ^Mmsja5K  
} Yf?hl  
private void fixUp(int k) { &*YFK/]  
while (k > 1) { %jErLg  
int j = k >> 1; N87)rhXSo,  
if (queue[j]>queue[k]) `bJ?8~ 8 *  
break; UID0|+%Y  
SortUtil.swap(queue,j,k); 7@NV|Idtd  
k = j; "2=v:\~=  
} >|1$Pv?  
} /=K(5Xd  
6.'j \  
} 'o]kOp@q  
AeR*79x  
} bn#'o(Lp  
\n<9R8g5  
SortUtil: PY76;D*`  
i1 >oRT{Z  
package org.rut.util.algorithm; _PPn =kuMa  
h3rVa6cxM  
import org.rut.util.algorithm.support.BubbleSort; [e f&|Pi-  
import org.rut.util.algorithm.support.HeapSort; % 4Gt^:J"  
import org.rut.util.algorithm.support.ImprovedMergeSort; Q.MbzSgXL  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2)MX<prH  
import org.rut.util.algorithm.support.InsertSort; H#/Hs#  
import org.rut.util.algorithm.support.MergeSort; cw/E?0MWb  
import org.rut.util.algorithm.support.QuickSort; ;Qi0j<dXd  
import org.rut.util.algorithm.support.SelectionSort; {l9gYA  
import org.rut.util.algorithm.support.ShellSort; H{4_,2h =m  
8.zYa(< 2  
/** >K!$@]2F  
* @author treeroot 4Ifz-t/  
* @since 2006-2-2 tNG[|Bi#  
* @version 1.0 odTa 2$O  
*/ TZ#^AV=ae  
public class SortUtil {  "SA*  
public final static int INSERT = 1; G$[Hm\V  
public final static int BUBBLE = 2; nIWY<Z"  
public final static int SELECTION = 3; :X}fXgeL  
public final static int SHELL = 4; V<ii  
public final static int QUICK = 5; 8/<+p? 3p>  
public final static int IMPROVED_QUICK = 6; sLd%m+*p  
public final static int MERGE = 7; AD~_n ^  
public final static int IMPROVED_MERGE = 8; 6F_:,b^  
public final static int HEAP = 9; ~wQ M ?h  
(tCBbPW6T?  
public static void sort(int[] data) { N$.=1Q$F6  
sort(data, IMPROVED_QUICK); pv,z$3Q  
} +45.fo  
private static String[] name={ +`7!4gxwK!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a$3] `  
}; `Y3\R#  
QIfP%,LT  
private static Sort[] impl=new Sort[]{ *z^Au7,&  
new InsertSort(), D `av9I  
new BubbleSort(), 6a704l%#hb  
new SelectionSort(), pf&U$oR4  
new ShellSort(), p2 !w86 F  
new QuickSort(), QJSi|&Rx&?  
new ImprovedQuickSort(), BP@V:z  
new MergeSort(), 7- |N&u  
new ImprovedMergeSort(), `{NbMc\ ]  
new HeapSort() n}C0gt-  
}; Wf~PP;  
Ya}}a  
public static String toString(int algorithm){ `neo.]  
return name[algorithm-1]; M5 P3;  
} &7 9F Uac  
N|%X/UjZ2.  
public static void sort(int[] data, int algorithm) { ,/"0tP&_;  
impl[algorithm-1].sort(data); *xN?5u%  
} :o:Z   
r::0\{{r"p  
public static interface Sort { f?TS#jG4}  
public void sort(int[] data); xwj{4fzpk{  
} n(.L=VuXn  
TAq[g|N-;  
public static void swap(int[] data, int i, int j) { 4]ko  
int temp = data; kG5Uc8 3#G  
data = data[j]; EHfB9%O7y  
data[j] = temp; BY':R-~(  
} *J{E1])<a  
} hxt;sQAo{  
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