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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。 IVPN=jg?  
插入排序: +%XByY5  
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package org.rut.util.algorithm.support; U*~-\jN1pb  
[e` | <  
import org.rut.util.algorithm.SortUtil;  ijOp{  
/** Led\S;pl  
* @author treeroot ]_(hUj._  
* @since 2006-2-2 2L&c91=wE  
* @version 1.0 lW?}Ts ~'  
*/ G{[w+ObX  
public class InsertSort implements SortUtil.Sort{ k( Sda>-  
{`D]%eRO  
/* (non-Javadoc) ~Y`ys[Z m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ibz9j uY  
*/ wKpBH}  
public void sort(int[] data) { Q$ew.h  
int temp; N~flao^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Nqj@p<y/q  
} b3%x&H<j  
} MZ}0.KmaZ  
} T */I4"  
,mz;$z6i  
} }OEL] 5  
 lPZ>#  
冒泡排序: }@HgFM"  
oZ*?Uh*  
package org.rut.util.algorithm.support; U^KWRqt  
!!Ww#x~k$[  
import org.rut.util.algorithm.SortUtil; T!]rdN!  
bdWdvd:  
/** !M8_PC*a  
* @author treeroot BX$<5S@  
* @since 2006-2-2 rY(7IX  
* @version 1.0 Q &W>h/  
*/ 79;uHR&S  
public class BubbleSort implements SortUtil.Sort{ _b<;n|^  
cRs.@U\{R\  
/* (non-Javadoc)  7V5c`:"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MDytA0M  
*/ [ifw}(  
public void sort(int[] data) { 8;pY-j #  
int temp; aUNA` L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ G4c@v1#%.  
if(data[j] SortUtil.swap(data,j,j-1); *KNfPh#wi}  
} 9~`#aQG T  
} 8|@) #:  
} U Y*`R  
} i&H^xgm  
5 <k)tF%  
} JL G!;sov  
?<jWEz=  
选择排序: lt-3OcC  
Y\WQ0'y  
package org.rut.util.algorithm.support; 1Z ~C3)T=  
?jz\[0)s  
import org.rut.util.algorithm.SortUtil; >N al\  
EeMKo  
/** =7e!'cF[  
* @author treeroot Ze>R@rK  
* @since 2006-2-2 P Ptmh. }e  
* @version 1.0 zwC ,,U  
*/ 5{(4%  
public class SelectionSort implements SortUtil.Sort { .+S%hT,v6i  
k~AtnI  
/* w-JWMgY8w  
* (non-Javadoc) !4Zy$69R  
* *bo| F%NAz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gpyio1V>  
*/ JYj*.Q0  
public void sort(int[] data) { 1\,k^Je7  
int temp; Ws5N|g  
for (int i = 0; i < data.length; i++) { MS#"TG/)  
int lowIndex = i; ^U,iDK_  
for (int j = data.length - 1; j > i; j--) { )SP"V~^Wn  
if (data[j] < data[lowIndex]) { t0fgG/f'  
lowIndex = j; m7NWgXJ  
} ShL!7y*rT{  
} r'nPP6`  
SortUtil.swap(data,i,lowIndex); syLdm3d|  
} -zYa@PW  
} 3.Mpd  
s@$0!8sxm  
} LhKbZ oPp  
hzk!H]>E  
Shell排序: 00D.Jn  
;bG?R0a  
package org.rut.util.algorithm.support; jMBM qQNU  
j5R0e}/r  
import org.rut.util.algorithm.SortUtil; p,k1*|j  
h1 (i/{}:  
/** Jc?zX8>Ae:  
* @author treeroot G~C-tAB  
* @since 2006-2-2 nygGI_[l  
* @version 1.0 HD#>K 7  
*/ ;39a`  
public class ShellSort implements SortUtil.Sort{ zd2_k 9  
0kCo0{+n  
/* (non-Javadoc) (PH7nW7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W=EcbH9/.)  
*/ ;]xc}4@=mg  
public void sort(int[] data) { _)<5c!  
for(int i=data.length/2;i>2;i/=2){ uQbag]&j  
for(int j=0;j insertSort(data,j,i); ;;i419  
} SVwxK/Fci  
} DM v;\E~D  
insertSort(data,0,1); bBML +0a  
} E> pr})^w  
Z] r9lC  
/** jFg19C{=X  
* @param data WFc4(Kl  
* @param j >{(c\oMD  
* @param i \nP79F0%2  
*/ o=94H7@  
private void insertSort(int[] data, int start, int inc) { (rJ-S"^u  
int temp; 3}g>/F ~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wQ+i l6  
} kD+#|f  
} `L$Av9X\  
} !wE% <Fh  
NG3:=  
} [u*7( 4e  
:j3^p8]  
快速排序: J ?aJa  
> .}G[C  
package org.rut.util.algorithm.support; X} V]3  
B>'J5bZsw  
import org.rut.util.algorithm.SortUtil; mpD.x5jm<  
h`! 4`eI  
/** gktlwiCZ  
* @author treeroot L-U4 8 i  
* @since 2006-2-2 p`&{NR3+  
* @version 1.0 ?>ZrdfTwz,  
*/ c8]%,26.  
public class QuickSort implements SortUtil.Sort{ 20 $Tky_  
ik?IC$*n3i  
/* (non-Javadoc) ^y ', l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _}j>  
*/ ]3|h6KWq  
public void sort(int[] data) { f#AuZ]h  
quickSort(data,0,data.length-1); :T PG~`k(  
} SF:{PgGMi  
private void quickSort(int[] data,int i,int j){ 2=fLb7  
int pivotIndex=(i+j)/2; 7}\AhQ, S  
file://swap [-#1;!k  
SortUtil.swap(data,pivotIndex,j); cEp/qzAiD%  
w=-{njMz6&  
int k=partition(data,i-1,j,data[j]); OAo03KW  
SortUtil.swap(data,k,j);  n}b/9  
if((k-i)>1) quickSort(data,i,k-1); >o p/<?<  
if((j-k)>1) quickSort(data,k+1,j); NR&a er  
He4q-\ht  
} @o@SU"[?_  
/** tculG|/  
* @param data -KbO[b\V  
* @param i vm*9xs  
* @param j ;>>:7rdYt  
* @return ^cW{%R>XY  
*/ uU$/4{  
private int partition(int[] data, int l, int r,int pivot) { xPT$d,~"  
do{ 8zeD%Uv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <.lN'i;(  
SortUtil.swap(data,l,r); 4u|6^ wu.I  
} Z^mIGy}  
while(l SortUtil.swap(data,l,r); c}=[r1M*  
return l; NJ}x qg  
} eon(C|S7eK  
Z^A(Q>{e  
} }EfRYE$E  
ou|3%&*"  
改进后的快速排序: b[n6L5P5m2  
n#GHa>p.-  
package org.rut.util.algorithm.support; _fj@40i M  
Um/ g&k  
import org.rut.util.algorithm.SortUtil; JZyEyN  
D 5Z7?Y  
/** rY6bc\?`x  
* @author treeroot {[H#lX 4  
* @since 2006-2-2 :^QV,d<C  
* @version 1.0 rA_r$X  
*/ _cfAJ)8=  
public class ImprovedQuickSort implements SortUtil.Sort { | ~D~#Nz  
kmfz.:j{  
private static int MAX_STACK_SIZE=4096; /xA`VyHO  
private static int THRESHOLD=10; h*[sV  
/* (non-Javadoc) W89J]#v)k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .d)H2X  
*/ wE <PXBl\b  
public void sort(int[] data) { M@.?l=1X  
int[] stack=new int[MAX_STACK_SIZE]; T5-'|+  
H:1F=$0I9  
int top=-1; %s%e5hU  
int pivot; h7]>b'H  
int pivotIndex,l,r; 5FNf)F   
p_3VFKq>0  
stack[++top]=0;  mxvV~X %  
stack[++top]=data.length-1; a5g1.6hF  
sD XJXJZ  
while(top>0){ ?0E-Lac=  
int j=stack[top--]; "0"8Rp&V|  
int i=stack[top--]; = U~\iJ  
BS3BJwf; f  
pivotIndex=(i+j)/2; {}PBYX R  
pivot=data[pivotIndex]; | -AR)Smt  
`p^xdj}  
SortUtil.swap(data,pivotIndex,j); xaSiG  
8\Z/mU*4  
file://partition %} Ob~m>P  
l=i-1; <J1$s_^`  
r=j; j7&0ckN&G  
do{ q/tC/V%@(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j\@|oW0  
SortUtil.swap(data,l,r); $0E_4#kwB  
} 1T7;=<g`  
while(l SortUtil.swap(data,l,r); fNi_C"<  
SortUtil.swap(data,l,j); K* 0]*am|v  
P\|i<Ds_M  
if((l-i)>THRESHOLD){ w`0r`\#V/  
stack[++top]=i; 3D7phq>.q  
stack[++top]=l-1; F a'2i<  
} Uw_z9ZL  
if((j-l)>THRESHOLD){ /`VtW$9-  
stack[++top]=l+1; .mS'c#~5Y  
stack[++top]=j; #T)gKp  
} Ne,u\q3f  
x~O_v  
} {~d8_%:b  
file://new InsertSort().sort(data); }NJ? .Y  
insertSort(data); ~dqEUu!C  
} ze%)fZI0f  
/** HV6'0_R0  
* @param data _52BIrAO2  
*/ W%7m3/d  
private void insertSort(int[] data) { uO`YA]  
int temp; h|'T'l&z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d~J4&w  
} wms8z  
} U5wO;MA  
} cS1BB#N0  
Q|}Pc>ae  
} [I` 6F6  
lN^} qg><  
归并排序: ! =c&U.B  
{utIaMb]&v  
package org.rut.util.algorithm.support; BK:S:  
_-I0f##.  
import org.rut.util.algorithm.SortUtil;  %sLij*  
~\m|pxcj  
/** Z-+p+34ytq  
* @author treeroot q[SUYb;,  
* @since 2006-2-2 U8KEg)Msk  
* @version 1.0 f)+fdc  
*/ L$+ap~ld  
public class MergeSort implements SortUtil.Sort{ SW%d'1ya  
9WuKW***  
/* (non-Javadoc) zZ=.riK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :xT=uE.I  
*/ Gv}h/zu-  
public void sort(int[] data) { 9m fYB  
int[] temp=new int[data.length]; e$^O_e  
mergeSort(data,temp,0,data.length-1); 7L:$Amb_F  
} ;-d :!*  
M -df Gk  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6!n%SUt  
int mid=(l+r)/2; b1;80P/:D  
if(l==r) return ; )xQA+$H#4  
mergeSort(data,temp,l,mid); [ Q6v#I  
mergeSort(data,temp,mid+1,r); 1vQj` F  
for(int i=l;i<=r;i++){ [Hww3+~+  
temp=data; 7Jm9,4]  
} 8W"~>7/>D  
int i1=l; eS jXaZh  
int i2=mid+1; 5sq#bvfJ o  
for(int cur=l;cur<=r;cur++){ f13%[RA9N  
if(i1==mid+1) d(L u|/~  
data[cur]=temp[i2++]; * 5#Y [c  
else if(i2>r) ZIx,?E+eJ  
data[cur]=temp[i1++]; l~M86 h  
else if(temp[i1] data[cur]=temp[i1++]; vxo iPqo  
else /*lSpsBn  
data[cur]=temp[i2++]; h^5'i} @u  
} Ui46 p  
} toEmIa~o6  
*Gm%Dn  
} `1KZ14K  
f,Sybf/uHh  
改进后的归并排序: xXu/CGzG  
yl%F}kBR  
package org.rut.util.algorithm.support; KutR l$,  
xF_ Y7rw1w  
import org.rut.util.algorithm.SortUtil; W<3nF5!  
Cj}1 )qWq  
/** Dg@>d0FW  
* @author treeroot !_cT_ WHty  
* @since 2006-2-2 TUiXE~8=  
* @version 1.0 (+9_nAgZ,  
*/ R gEKs"e  
public class ImprovedMergeSort implements SortUtil.Sort { oM$EQd`7  
}9Z?UtS  
private static final int THRESHOLD = 10; % j7lLSusX  
v>$GVCY  
/* EpCUL@+  
* (non-Javadoc) Mnaoh:z  
* SN'LUwaMp!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2`l$uEI3oJ  
*/ l\*}  
public void sort(int[] data) { 1HBch]J  
int[] temp=new int[data.length]; '@Y@H,  
mergeSort(data,temp,0,data.length-1); 5_nkN`x  
} /cr.}D2O  
JF_\A)<ki  
private void mergeSort(int[] data, int[] temp, int l, int r) { Fp06a!7<  
int i, j, k; >b |l6 #%  
int mid = (l + r) / 2; yKa}U!$   
if (l == r)  OXzJ%&h  
return; Ni GK| Z   
if ((mid - l) >= THRESHOLD) 1z$;>+g<  
mergeSort(data, temp, l, mid); >0SF79-RE  
else w'.ny<Pe  
insertSort(data, l, mid - l + 1); Q4Q*5>  
if ((r - mid) > THRESHOLD) 'j!7 O+7y  
mergeSort(data, temp, mid + 1, r); 6pQ#Zg()vp  
else t@!X1?`w  
insertSort(data, mid + 1, r - mid); a)[XJLCQ  
w-|i8%X  
for (i = l; i <= mid; i++) { >)U 7$<&b  
temp = data; D C mNxN  
} NJ 7N*   
for (j = 1; j <= r - mid; j++) { ^gh/$my;  
temp[r - j + 1] = data[j + mid]; 2[Q*?N  
} wI}5[m  
int a = temp[l]; >u~ [{(d ,  
int b = temp[r]; >&aFSL,f  
for (i = l, j = r, k = l; k <= r; k++) { rGRxofi.  
if (a < b) { v)+wr[Qs  
data[k] = temp[i++]; z(3mhMJY  
a = temp; yGH'|`  
} else { ZqkP# ]+Y'  
data[k] = temp[j--]; JQE^ bcr  
b = temp[j]; .7Ys@;>B  
} @=b0>^\m  
} Hv<%_t_/  
} l8%x(N4  
iH( K[F /  
/** W UdKj  
* @param data *6q8kQsz^1  
* @param l \y: 0+s/  
* @param i .F?yt5{5No  
*/ `t:7&$>T  
private void insertSort(int[] data, int start, int len) { T2} I,{U  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <i~ ( 8F\  
} <h U ZD;  
} _$wWKJy9  
} i?'HVx  
} }!& w<wR  
/^#k /z  
堆排序: E[t\LTt*n  
CjOaw$s  
package org.rut.util.algorithm.support; B8|=P&L7N  
o]}b#U8S  
import org.rut.util.algorithm.SortUtil; pt(GpbtWK  
zV4%F"-  
/** [t<^WmgtxL  
* @author treeroot 3>0/WbA:7E  
* @since 2006-2-2 Q9 kKk  
* @version 1.0 eP'e_E  
*/ bI@+Or  
public class HeapSort implements SortUtil.Sort{ ).N}x^  
RXt`y62yK  
/* (non-Javadoc) FD#?pVyPn^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v.cB3/$ z  
*/ y*\ M7}](  
public void sort(int[] data) { A! <R?  
MaxHeap h=new MaxHeap(); ZGzrh`j{-  
h.init(data); _xAdvr' W  
for(int i=0;i h.remove(); ^gH.5L0]gH  
System.arraycopy(h.queue,1,data,0,data.length); M$%aX,nk'  
} *0l^/jqn:  
s3_i5,y  
private static class MaxHeap{ !;'U5[}8  
6VQ*z8wLw  
void init(int[] data){ y$*Tbzp  
this.queue=new int[data.length+1]; ;r- \h1iA'  
for(int i=0;i queue[++size]=data; VV?+q)  
fixUp(size); #g{ZfO[#  
} uMPJ  
} 5^GUuFt5m  
*J8j_-i,R  
private int size=0; \KLWOj%  
k2<VUeW5  
private int[] queue; )f(#Fn  
-:a 9'dT  
public int get() { iIcO_ZyA  
return queue[1]; "] kaaF$U%  
} V`S6cmwdc\  
GZXUB0W\@)  
public void remove() { l K}('7\  
SortUtil.swap(queue,1,size--); L;fhJ~ r  
fixDown(1); D>?%p"e  
} lp!@uoN^T  
file://fixdown D D"]as"#  
private void fixDown(int k) { <z%zz c1s  
int j; "p#mNc  
while ((j = k << 1) <= size) { hKQT,  
if (j < size %26amp;%26amp; queue[j] j++; Z)62/`C)  
if (queue[k]>queue[j]) file://不用交换 x?va26FV  
break; bH3-#mw5w  
SortUtil.swap(queue,j,k); ?%;7k'0"  
k = j; %Ni)^   
} i?qS8h{  
} 9d#-;qV  
private void fixUp(int k) { HR\yJt  
while (k > 1) { < I8hy$+6  
int j = k >> 1; {/XzIOO;b  
if (queue[j]>queue[k]) p!|Wp  
break; >Ah [uM  
SortUtil.swap(queue,j,k); # T$^{/J  
k = j; Ls5|4%+&  
} 3PpycJ}  
} -zN*2T  
QI=",vma u  
} SD8Q_[rY  
V. =!^0'A  
} ;[ pyKh  
y''`73U"  
SortUtil: "CT'^d+  
$MfHA~^  
package org.rut.util.algorithm; S,n*1&ogj  
G9N6iKP!  
import org.rut.util.algorithm.support.BubbleSort; Pqo"~&Y|~  
import org.rut.util.algorithm.support.HeapSort; c:>&Bg&,6T  
import org.rut.util.algorithm.support.ImprovedMergeSort; u~bk~ 3.I  
import org.rut.util.algorithm.support.ImprovedQuickSort; l yF~E  
import org.rut.util.algorithm.support.InsertSort; DN;g2 R`f  
import org.rut.util.algorithm.support.MergeSort; }/SbmW8(1  
import org.rut.util.algorithm.support.QuickSort; a7%5Qg9B;  
import org.rut.util.algorithm.support.SelectionSort; nP0|nPWz#  
import org.rut.util.algorithm.support.ShellSort; O<Ht-TN&  
ou6yi; l%  
/** @4sv(HyDY  
* @author treeroot (05/}PhB`  
* @since 2006-2-2 s34{\/'D+  
* @version 1.0 Gi6sl_"q  
*/ h-<('w:A  
public class SortUtil { 5^ARC^v  
public final static int INSERT = 1; i`FevAx;[m  
public final static int BUBBLE = 2; iNe;h|  
public final static int SELECTION = 3; ^0pd- n@pn  
public final static int SHELL = 4; VI74{='=  
public final static int QUICK = 5; :JV= Kt  
public final static int IMPROVED_QUICK = 6; Owo2DsT t  
public final static int MERGE = 7; t*NZ@)>  
public final static int IMPROVED_MERGE = 8; \WQ\q \  
public final static int HEAP = 9; J)x-Yhe  
4~P{H/]  
public static void sort(int[] data) { A'c0zWV2  
sort(data, IMPROVED_QUICK); _o'ii VDuD  
} -,uTAk0+@  
private static String[] name={ vYKKv%LE  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Urm&4&y  
}; [v^T]L  
CJz2.yd  
private static Sort[] impl=new Sort[]{ =!GUQLS{  
new InsertSort(), K;k_MA310  
new BubbleSort(), /$|C s  
new SelectionSort(), :p;!\4)u  
new ShellSort(), Ew*_@hVC  
new QuickSort(), ,5mK_iUw3  
new ImprovedQuickSort(), Xjw> Qws  
new MergeSort(), kl?U 2A.=  
new ImprovedMergeSort(), re2M!m6k5  
new HeapSort() 4`I2tr  
}; FDbb/6ku  
|cEJRs@B  
public static String toString(int algorithm){ ?w#V<3=  
return name[algorithm-1]; ^vn8s~#  
} yS[:C 2v  
0BMKwZg  
public static void sort(int[] data, int algorithm) {  s X.L  
impl[algorithm-1].sort(data); @i'RIL}  
} Q })x4  
Ynl^Z  
public static interface Sort { !TA6-]1  
public void sort(int[] data); (+`pEDD{X  
} %YkJ A:  
{pH{SRM)B  
public static void swap(int[] data, int i, int j) { mKugb_d?  
int temp = data; b|^g51v  
data = data[j]; umaF}}-Q{  
data[j] = temp; Dq/_^a/1  
} )a AKO`  
} -*~ = 4m<  
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