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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。 m]Qs BK  
插入排序: QuI!`/N)z  
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package org.rut.util.algorithm.support; cH|J  
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import org.rut.util.algorithm.SortUtil; ` l'QAIo  
/** 8WpNlB+:{  
* @author treeroot s[/d}S@ >  
* @since 2006-2-2 7(C)vtEO:  
* @version 1.0 ;p <BiC$b  
*/ <HS{A$]  
public class InsertSort implements SortUtil.Sort{ R3piI&u  
Buq(L6P9r  
/* (non-Javadoc) k,<7)-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0(Z:QqpU$  
*/ ~q/~ u  
public void sort(int[] data) { 28+{  
int temp; MU `!s b*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [0kZyjCq@  
} E&L ml?@  
} SJ;{  Hg  
} 2,Z@<  
T?jN/}qg  
} a0B%x!y^  
S+mBVk"-~S  
冒泡排序: (sH4 T>  
8NE[L#k  
package org.rut.util.algorithm.support; `jhbKgR[  
#hu`X6s"  
import org.rut.util.algorithm.SortUtil; *r9D+}Y(4  
Z?9G2<i  
/** "qZTgCOY2  
* @author treeroot n<b}6L}  
* @since 2006-2-2 cf"!U+x  
* @version 1.0 8 K)GH:a  
*/ >lek@euqw  
public class BubbleSort implements SortUtil.Sort{ jG}nOI  
}&s |~  
/* (non-Javadoc) i/!KUbt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pV 8U`T  
*/ e~,+rM  
public void sort(int[] data) { B !rb*"[  
int temp; L7xiq{t`Y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ B(eiRr3  
if(data[j] SortUtil.swap(data,j,j-1); =0;njL(7;  
} tF<&R& =  
} dPV<:uO  
} XI`s M~'  
} U!BZs Vx  
2'Kh>c2  
} XC}2GHO<  
j9/iBK\Y  
选择排序: XGYsTquSe  
u'T>Y1I  
package org.rut.util.algorithm.support; '*&V7:  
Ex L7 ]3r  
import org.rut.util.algorithm.SortUtil; j~9Y0jz_  
K 4{[s z  
/** /%{CJ0Y  
* @author treeroot h*Mi/\  
* @since 2006-2-2 NNJQDkO-I  
* @version 1.0 cmd7-2  
*/ FS!vnl8`  
public class SelectionSort implements SortUtil.Sort { c7tO'`q$e  
GFnwj<V+{  
/* n#4T o;CS  
* (non-Javadoc) !<X/_+G\  
* v!n|X7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IkGM~3e  
*/ 4>B=k  
public void sort(int[] data) { 3YUF\L]yyw  
int temp; ^0(D2:E  
for (int i = 0; i < data.length; i++) { Qdc)S>gp  
int lowIndex = i; C8(0|XX  
for (int j = data.length - 1; j > i; j--) { o?#-Tkb  
if (data[j] < data[lowIndex]) { tTt}=hQpgX  
lowIndex = j; z'gJy  
} QV#HN"F/K  
} R"z}q (O:  
SortUtil.swap(data,i,lowIndex); ,WoV)L'?  
} 7o7FW=^  
} F"23v G>3  
}p8iq  
} %qVD-Jln  
yhnPS4DC  
Shell排序: .^ba*qb`{  
srKEtd"  
package org.rut.util.algorithm.support; f&Juq8s_0  
25W #mh,'  
import org.rut.util.algorithm.SortUtil; DW)81*~g  
7WNUHLEt  
/** I(/*pa?m{  
* @author treeroot <e@4;Z(h04  
* @since 2006-2-2 /f=31<+MtF  
* @version 1.0 . lSoC`HE  
*/ *A0d0M]cg  
public class ShellSort implements SortUtil.Sort{ 4`+R |"4  
%9L+ Q1o  
/* (non-Javadoc) 6r h#ATep  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oC3W_vH.%  
*/ hw B9N  
public void sort(int[] data) { O`9vEovjs  
for(int i=data.length/2;i>2;i/=2){ 4 *. O%  
for(int j=0;j insertSort(data,j,i); ]KUeSg|  
} ?ihRt+eR~  
} < 7*9b  
insertSort(data,0,1); )3 '8T>^<K  
} "|E'E"_1  
r#J_;P{U  
/** e=[@HVr   
* @param data .kfx\,lgm  
* @param j ; 2aPhA  
* @param i u!FF{~5cs  
*/ GgtYO4,  
private void insertSort(int[] data, int start, int inc) { ]r\!Z <<(  
int temp; 3/,}&SX  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yQN^F+.  
} wxF\enDY  
} >h$Q%w{V  
} NBw{  
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} 9LSV^[QUH  
6|4ID"  
快速排序: rG%8ugap  
59X XmVg  
package org.rut.util.algorithm.support; ofs'xs1C  
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import org.rut.util.algorithm.SortUtil;  ;B{oGy.  
_9<Mo;C  
/** Q&w"!N  
* @author treeroot ]\/"-Y#4Q  
* @since 2006-2-2 $gCN[%+j  
* @version 1.0  $3cZS  
*/ 6$H`wDh#(&  
public class QuickSort implements SortUtil.Sort{ rrG}; A  
C;_00EQ=  
/* (non-Javadoc) F;T;'!mb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w,OPM}) il  
*/ h%sw^;\!  
public void sort(int[] data) { Fx:4d$>;  
quickSort(data,0,data.length-1); ;"8BbF.  
} ONF x -U]  
private void quickSort(int[] data,int i,int j){ D/wJF[_  
int pivotIndex=(i+j)/2; 27}0  
file://swap *Xh#W7,<  
SortUtil.swap(data,pivotIndex,j); :G &:v  
j rX`_Y  
int k=partition(data,i-1,j,data[j]); jI9#OEH_g  
SortUtil.swap(data,k,j);  %Nx,ZD@  
if((k-i)>1) quickSort(data,i,k-1); l9 &L$,=  
if((j-k)>1) quickSort(data,k+1,j); Yaz/L)Y;R  
3jHE,5m  
} 7R,;/3wWjG  
/** ^4et; F%  
* @param data 9ZuKED  
* @param i 3r[ s_Y*  
* @param j apnpy\in  
* @return f*VXg[&\\F  
*/ .9UrWBW\I  
private int partition(int[] data, int l, int r,int pivot) { gu&W:FY  
do{ >'jkL5l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >4os%T  
SortUtil.swap(data,l,r); v@{VQVx  
} N:%Nq8I}:  
while(l SortUtil.swap(data,l,r); bgkBgugZhX  
return l; ~g;)8X;;+  
} Z/ L%?zH  
7\gu; [n  
} p$` ^A  
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改进后的快速排序: mE &SAm5#d  
b1%w+*d<z  
package org.rut.util.algorithm.support; NLUiNfCR  
qx*N-,M%k(  
import org.rut.util.algorithm.SortUtil; 9WV8ZP  
d<E2=WVB6  
/** VKg9^%#b`[  
* @author treeroot <;cch6Z  
* @since 2006-2-2 fUZCP*7>  
* @version 1.0 p&D7&Sb[  
*/ -#R63f&  
public class ImprovedQuickSort implements SortUtil.Sort { md|I?vk  
j,z)x[3}  
private static int MAX_STACK_SIZE=4096; ?[%.4i;-h  
private static int THRESHOLD=10; [w)KNl  
/* (non-Javadoc) D[4%CQ1m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c5pK%I}O  
*/ d@zxgn7o  
public void sort(int[] data) { +>yspOEz  
int[] stack=new int[MAX_STACK_SIZE]; 6rO^ p  
Pon0(:#1  
int top=-1; :^FH.6}x  
int pivot; k L4#  
int pivotIndex,l,r; s!1/Bm|_T  
?v'CuWS  
stack[++top]=0; `, 4YPjk^  
stack[++top]=data.length-1; N x^JC_  
Ak$9\Sl  
while(top>0){ xn)F(P 0kv  
int j=stack[top--]; dP#7ev]'  
int i=stack[top--]; NGZtlNvh  
,mz7!c9H^a  
pivotIndex=(i+j)/2; 1`l(H4  
pivot=data[pivotIndex]; `>RM:!m6=$  
UWdqcOr  
SortUtil.swap(data,pivotIndex,j); `m$,8f%j6_  
:`0,f?cE  
file://partition n7zM;@{7  
l=i-1; :_+U[k(#  
r=j; (&, E}{p9  
do{ g;:3I\ L  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4#I=n~8a  
SortUtil.swap(data,l,r); c;=St1eoz  
} VW^q|B yB  
while(l SortUtil.swap(data,l,r); &v9"lR=_k  
SortUtil.swap(data,l,j); v[?gM.SF  
:R3&R CTZ  
if((l-i)>THRESHOLD){ Wu l8ej:  
stack[++top]=i; $jBi~QqOf  
stack[++top]=l-1; S'>KGdF  
} ZvK3Su)f1  
if((j-l)>THRESHOLD){ D>`{f4Y  
stack[++top]=l+1; 6vzvH  
stack[++top]=j; ^{NN-  
} ?Qts2kae#  
pTJ_DH  
} ZT,au SX  
file://new InsertSort().sort(data); O.aAa5^uh  
insertSort(data); ZY;g)`E1  
} [G[{?{  
/** OSom-?|w  
* @param data CM `Q((  
*/ 'z+Pa^)v  
private void insertSort(int[] data) { ':utU1dL  
int temp; ]]5(:>l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d Z+7S`{  
} e`5:46k|  
} P#;pQC  
} 'OMl9}M  
HhzPKd  
} E#kH>q@K`$  
GW]t~EL  
归并排序: Gr3 q  
<FN +  
package org.rut.util.algorithm.support; 6O@Lx ]t  
2m72PU<.  
import org.rut.util.algorithm.SortUtil; \`8F.oZ^)  
]!@!qp@  
/** >(sS4_O7N  
* @author treeroot &3*r-9BZ  
* @since 2006-2-2 h@s i)5"  
* @version 1.0 9,}Z1 f\%  
*/ ^q<EnsY  
public class MergeSort implements SortUtil.Sort{ y cWY.HD  
M@0S*[O{"  
/* (non-Javadoc) va.Ve# N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6-nf+!#G  
*/ e JEcLK3u  
public void sort(int[] data) { uLN.b339  
int[] temp=new int[data.length]; / ]nrxT  
mergeSort(data,temp,0,data.length-1); hi Ws:Yq  
} % <h2^H\O  
ldG$hk'  
private void mergeSort(int[] data,int[] temp,int l,int r){ FwQGxGZ  
int mid=(l+r)/2; EV~?]Kt~  
if(l==r) return ; I*(7(>zgyv  
mergeSort(data,temp,l,mid); c>C!vAg  
mergeSort(data,temp,mid+1,r); d-]!aFj|U  
for(int i=l;i<=r;i++){ i2\CDYP  
temp=data; *#'&a(h B!  
} .GW)"`HbU  
int i1=l; BkDq9>  
int i2=mid+1; =1mIk0H`  
for(int cur=l;cur<=r;cur++){ Fk?KR  
if(i1==mid+1) Ft>,  
data[cur]=temp[i2++];  o7AI  
else if(i2>r) WVL\|y728s  
data[cur]=temp[i1++]; sWgzHj(c  
else if(temp[i1] data[cur]=temp[i1++]; UD5f+,_;  
else 6 %T_;"hb  
data[cur]=temp[i2++]; <Oj'0NK-  
} )/{~&L U  
} {|Fn<&G  
^ =H 10A  
} 0fR?zT?  
hrbeTtqi  
改进后的归并排序: b28C (  
x2g=%K=  
package org.rut.util.algorithm.support; ~@iYP/=/Q  
'_xa>T}  
import org.rut.util.algorithm.SortUtil; #YLI"/Kn  
r / L  
/** a+n?y)u  
* @author treeroot w)gMJX/0yw  
* @since 2006-2-2 g^:7mG6C  
* @version 1.0 FsfP^a  
*/ !]!9 $6n  
public class ImprovedMergeSort implements SortUtil.Sort { 'ExQG$t  
bj 0-72V  
private static final int THRESHOLD = 10; p2 m`pT  
0U:9&j P,  
/* bw[K^/  
* (non-Javadoc) "=9)|{=m  
* 5VlF\-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jiLt *>I  
*/ p,#**g:  
public void sort(int[] data) { U6_GEBz~y  
int[] temp=new int[data.length]; ,j\UZ  
mergeSort(data,temp,0,data.length-1); Bj\oo+L/  
} h/#s\>)T  
b#_u.vP  
private void mergeSort(int[] data, int[] temp, int l, int r) { b_oUG_B3]  
int i, j, k; 9 N@N U:M+  
int mid = (l + r) / 2; 6X GqZ!2  
if (l == r) {hKf 'd9E  
return; :FI 4GR*?  
if ((mid - l) >= THRESHOLD) 4m/L5W:K  
mergeSort(data, temp, l, mid); ro@`S:  
else I~7eu&QZ  
insertSort(data, l, mid - l + 1); ZDl(q~4?z  
if ((r - mid) > THRESHOLD) JA^Y:@<{/  
mergeSort(data, temp, mid + 1, r); [moz{Y  
else BO-=X 78f@  
insertSort(data, mid + 1, r - mid); hjY)W;  
:8Jn?E (36  
for (i = l; i <= mid; i++) { jX{t/8v/s4  
temp = data; J"]P" `/  
} HVcd< :g0  
for (j = 1; j <= r - mid; j++) { MIWI0bnf  
temp[r - j + 1] = data[j + mid]; Klk[ h  
} \Y}nehxG@  
int a = temp[l]; \BxE0GGky  
int b = temp[r]; Ptv=Bwg  
for (i = l, j = r, k = l; k <= r; k++) { 1$ ~W~O  
if (a < b) { 9\W }p\c  
data[k] = temp[i++]; twJ)h :!_y  
a = temp; \^rAH@  
} else { iMr/i?`i  
data[k] = temp[j--]; >2?O-WXe  
b = temp[j]; BF>3CW7  
} ` SO"F,  
} M `bEnu  
} xQ7-4 N,  
kkE1CHY  
/** dzPwlCC%-  
* @param data ~T<o?98  
* @param l `l8^n0-  
* @param i y9L:2f\  
*/ t9B]V  
private void insertSort(int[] data, int start, int len) { 1]vrpJw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); geRD2`3;  
} K\]ey;Bd  
} <UcbBcW,  
} #x;i R8^  
} W{2(fb  
Q+UqLass  
堆排序: hE"a(i  
L5tSS=  
package org.rut.util.algorithm.support; b:uMO N,H  
Dpa PRA)x  
import org.rut.util.algorithm.SortUtil; 71ctjU`U2  
~L.)<{?  
/** U^$o< 2  
* @author treeroot %2)'dtPD~  
* @since 2006-2-2 T};fy+iq  
* @version 1.0 =c,m)\u/8  
*/ Z ^tF  
public class HeapSort implements SortUtil.Sort{ `_{^&W WS  
b{o%`B*  
/* (non-Javadoc) K2glkGK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Pk-<b4}  
*/ 71?>~PnbH}  
public void sort(int[] data) { ;nbUbRb  
MaxHeap h=new MaxHeap(); \)pT+QxZ  
h.init(data); /M;A)z  
for(int i=0;i h.remove(); Q!<b"8V]  
System.arraycopy(h.queue,1,data,0,data.length); tNI~<#+lg  
} U`es n?m!  
gL+8fX2G6  
private static class MaxHeap{ N| dwuBW  
vq~btc.p{&  
void init(int[] data){ p9[J 9D3~  
this.queue=new int[data.length+1]; hi I`ot  
for(int i=0;i queue[++size]=data; =*aun&  
fixUp(size); 7Xu.z9y  
} pbe" w=<  
} bF'^eR  
`eat7O  
private int size=0; DV(^h$1_  
A3C#w J  
private int[] queue; 2V0gj /&  
4A_}:nU  
public int get() { 3sf+ uoV  
return queue[1]; c:Tw.WA  
} ]C =+  
0?]*-wvp  
public void remove() { =8?gx$r2  
SortUtil.swap(queue,1,size--); 9WaKsdf  
fixDown(1); Azun"F_f  
} e5_:15%R\  
file://fixdown Htseu`>_$  
private void fixDown(int k) { &>I4-D[  
int j; $:R"IqDG  
while ((j = k << 1) <= size) { dHnR)[?e  
if (j < size %26amp;%26amp; queue[j] j++; \7QAk4I~  
if (queue[k]>queue[j]) file://不用交换 mJaWzR  
break; >W= 0N (  
SortUtil.swap(queue,j,k); x;,H>!r"i  
k = j; URq{#,~CT  
} 6@TGa%:G  
} * _puW x  
private void fixUp(int k) { _ 13M  
while (k > 1) { E4^zW_|xE  
int j = k >> 1; $= /.oh  
if (queue[j]>queue[k]) ^Tbw#x]2  
break; }| BnG"8  
SortUtil.swap(queue,j,k); |0vV?f$  
k = j; rAK}rNxI  
} n%lY7.z8d  
} V&x6ru#  
ULq#2l  
} N'nI ^=  
/F;b<kIy8  
} v Dgf}  
-MrEJ  
SortUtil: N-fGc?E  
k\UDZ)TQV  
package org.rut.util.algorithm; U$j*{`$4  
Hn%n>Bnl  
import org.rut.util.algorithm.support.BubbleSort; DGMvYNKTj  
import org.rut.util.algorithm.support.HeapSort; O mkl|l9  
import org.rut.util.algorithm.support.ImprovedMergeSort; (^-i[aJY  
import org.rut.util.algorithm.support.ImprovedQuickSort; X8 uVet]D~  
import org.rut.util.algorithm.support.InsertSort; P8jXruZr  
import org.rut.util.algorithm.support.MergeSort; &u-H/C U%  
import org.rut.util.algorithm.support.QuickSort; FI1R7A  
import org.rut.util.algorithm.support.SelectionSort; Qo>V N`v  
import org.rut.util.algorithm.support.ShellSort; |cwGc\ES  
6$TE-l  
/** yk1syN_  
* @author treeroot u|l]8T9L  
* @since 2006-2-2 [,s{/OM  
* @version 1.0 lg_X|yhL  
*/ mAkR<\?iTF  
public class SortUtil { f!;4 -.p`  
public final static int INSERT = 1; e;:~@cB,c  
public final static int BUBBLE = 2; 1{B^RR.  
public final static int SELECTION = 3; <^?64  
public final static int SHELL = 4; ek~bXy{O`  
public final static int QUICK = 5; T&6W>VQ|[>  
public final static int IMPROVED_QUICK = 6; \; Io  
public final static int MERGE = 7; Ay'2! K,I  
public final static int IMPROVED_MERGE = 8; nlaJ  
public final static int HEAP = 9; ^;0.P)yGA  
~GJJ{Bm_  
public static void sort(int[] data) { n5i#GvO^  
sort(data, IMPROVED_QUICK); Mq!03q6  
}  PDaD:}9  
private static String[] name={ `z<k7ig  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" o*7`r~  
}; kIS_ 6!  
,"!t[4p=f  
private static Sort[] impl=new Sort[]{ 5tMp@$F\{[  
new InsertSort(), y=)Cid  
new BubbleSort(), ^<fN  
new SelectionSort(), 2 F3U,}  
new ShellSort(), xh[De}@  
new QuickSort(), ml$"C  
new ImprovedQuickSort(), cx?t C#t  
new MergeSort(), HMT^gmF)  
new ImprovedMergeSort(), ?5d7J,"<h  
new HeapSort() .du FMJl  
}; tPh``o  
Op^r}7  
public static String toString(int algorithm){ X PnN"Y"y  
return name[algorithm-1]; EAYx+zI  
} #w3cImgp2  
.c~`{j}  
public static void sort(int[] data, int algorithm) { Jsf -t  
impl[algorithm-1].sort(data); yD6lzuk{X  
} 1DPgiIG~  
Ht.0ug  
public static interface Sort { bd],fNgJ  
public void sort(int[] data); T\\Q!pY  
} hawE2k0p(  
<t[WHDO`  
public static void swap(int[] data, int i, int j) { ~D1.opj3  
int temp = data; L7i^?40  
data = data[j]; g:bw;6^ u  
data[j] = temp; H6Q1r[(B  
} 0^htwec!  
} "NqB_?DT  
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