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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。 x`#|8  
插入排序: VZJ[h{ 6  
Rt{`v<  
package org.rut.util.algorithm.support; {MaFv  
v\UwL-4[  
import org.rut.util.algorithm.SortUtil; q~K KN /N  
/** g+-=/Ge  
* @author treeroot bxS+ R\  
* @since 2006-2-2 q Pc"A!-i  
* @version 1.0 -p:X]Ov  
*/ [AZN a  
public class InsertSort implements SortUtil.Sort{ jb~/>I^1  
]757oAXl  
/* (non-Javadoc) ,;2x.We  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *vss  
*/ ':v@Pr|  
public void sort(int[] data) { t1I` n(]n  
int temp; aFj)s?$4]K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~x>?1K  
} *1Lkde@|{  
} +P&;cCV`S3  
} F_Q?0 Do0'  
NTHy!y<!h  
} J:YFy-[w(  
9\|n2$H:  
冒泡排序: f&\v+'[p  
,AC+s"VS  
package org.rut.util.algorithm.support; t^ =6czk  
nr#DE?  
import org.rut.util.algorithm.SortUtil; I.<>6ISI@  
(L)tC*Qjc  
/** 0nF>E@j^[  
* @author treeroot dJhT}"x  
* @since 2006-2-2 b ;Vy=f  
* @version 1.0 +M+ht  
*/ *j,5TO-j  
public class BubbleSort implements SortUtil.Sort{ %C]K`=vI-  
[8k7-}[  
/* (non-Javadoc) 2Et7o/\<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uLw$`ihw  
*/ QES[/i +  
public void sort(int[] data) { `hD\u@5Tw  
int temp; M'=27!D^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ QY<{S&k9  
if(data[j] SortUtil.swap(data,j,j-1); C(:tFuacpw  
} y[*Bw)F\N  
} (ia(y(=C  
} 2WjQ-mM#  
} Bf Lh%XC  
D?u*^?a2  
} +"!,rZ7,A  
1*eWo~G  
选择排序: U@<>2  
4c2*)x$@  
package org.rut.util.algorithm.support; a.a5qwG  
yfS`g-j{~  
import org.rut.util.algorithm.SortUtil; GM6Y`iU  
Vwp fkD`  
/** nn@"68]g  
* @author treeroot xf8C$|,  
* @since 2006-2-2 kfo, PrW`A  
* @version 1.0 #c V_p  
*/ .c'EXuI7),  
public class SelectionSort implements SortUtil.Sort { JVAJL q  
T`{W$ 4XS  
/* 5 N(/K.^  
* (non-Javadoc) ,z1X{  
* n&=3Knbd@d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) odPq<'V|AY  
*/ mnM#NT5]  
public void sort(int[] data) { C,R_` %b%  
int temp; !GcH )  
for (int i = 0; i < data.length; i++) { e,qc7BJzK  
int lowIndex = i; |1G/J[E  
for (int j = data.length - 1; j > i; j--) { O $uXQ.r  
if (data[j] < data[lowIndex]) { V.kU FTCvf  
lowIndex = j; Ti }Ljp^O  
} tY<D\T   
} 6R1){,8  
SortUtil.swap(data,i,lowIndex); 4r!8_$fN?G  
} X8Px  
} | 1H"ya  
5V\\w~&/  
} k9`Bi`wp  
>ZKE  
Shell排序: xtyzy@)QL  
@cNX\$J  
package org.rut.util.algorithm.support; RSG\3(  
O0#wM-M  
import org.rut.util.algorithm.SortUtil; k 41lw^Jh  
m/sAYF"  
/** k/W$)b:Of`  
* @author treeroot b>AFhj:  
* @since 2006-2-2 \3(d$_:b  
* @version 1.0 bNR}Mk]?  
*/ @2-Eky  
public class ShellSort implements SortUtil.Sort{ !']=7It{  
+Gi~VW.  
/* (non-Javadoc) JK.lL]<p i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z[ }0K3,5  
*/ d ! A)H<Zt  
public void sort(int[] data) { Af5O;v\  
for(int i=data.length/2;i>2;i/=2){ T<06y3sN  
for(int j=0;j insertSort(data,j,i); VL"!.^'c  
} wxpE5v+f|  
} >}h/$bU  
insertSort(data,0,1); L,0HX   
} %iY-}uhO  
4lH$BIAW  
/** Y[9x\6 _E  
* @param data <#JJS}TLk  
* @param j \"c;MK{  
* @param i /|Za[  
*/ 0f/=C9L  
private void insertSort(int[] data, int start, int inc) { u^SXg dj  
int temp; sY!PXD0Q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ET1/oG<@  
} *xXa4HB  
} O/$pT%D1x  
} b5_(Fv  
&mDKpYrB  
} 0l!%}E  
9'C kV[  
快速排序: !Gsr* F{.  
:\x53-&hO4  
package org.rut.util.algorithm.support; \Rop~gD  
gUzCDB^.:  
import org.rut.util.algorithm.SortUtil; g nJe!E  
nJ |O,*`O  
/** 7$'%*|C.  
* @author treeroot ]0.? 1se  
* @since 2006-2-2 lG,/tMy  
* @version 1.0 JyWBLi;Z  
*/ 'm9f:iTr  
public class QuickSort implements SortUtil.Sort{ F@4XORO;  
+lmMBjDa  
/* (non-Javadoc) u{xjFx-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P|YBCH  
*/ dHc38zp  
public void sort(int[] data) { LS@[O])$'  
quickSort(data,0,data.length-1); 1C(6.7l  
} ~>zml1aJ6  
private void quickSort(int[] data,int i,int j){ #=UEx  
int pivotIndex=(i+j)/2; w~@.&  
file://swap <T{2a\i 4f  
SortUtil.swap(data,pivotIndex,j); :Jwc'y-]  
N r5 aU6]  
int k=partition(data,i-1,j,data[j]); ~fB}v  
SortUtil.swap(data,k,j); a(&!{Y1bt  
if((k-i)>1) quickSort(data,i,k-1); epp ;~(xr  
if((j-k)>1) quickSort(data,k+1,j); pZp|F  
j|!.K|9B  
} /WXy!W30<  
/** &n+3^JNl  
* @param data "H\'4'hg  
* @param i BFmYbK  
* @param j +hL+3`TD#H  
* @return Z\6&5r=  
*/ 'jWd7w~(  
private int partition(int[] data, int l, int r,int pivot) { 0 ;kcSz  
do{ peqoLeJI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); B MU@J  
SortUtil.swap(data,l,r); l^4[;%*f#l  
} ?n)r1m  
while(l SortUtil.swap(data,l,r); 5\1Z"?  
return l; f)hs>F  
} $by-?z((  
/l_ $1<c  
} |1J=wp)#  
xMJF1O?3  
改进后的快速排序: ?T-6|vZA  
)iadu  
package org.rut.util.algorithm.support; <S I& e/  
^Cb7R/R3  
import org.rut.util.algorithm.SortUtil; ?PORPv#  
f2Frb  
/** 9frP`4<)  
* @author treeroot JG&`l{c9  
* @since 2006-2-2 Kd^{~Wlz&z  
* @version 1.0 H6?ZE  
*/ Bmuf[-}QW  
public class ImprovedQuickSort implements SortUtil.Sort { JPL8fX-w  
p%e! &:!  
private static int MAX_STACK_SIZE=4096; ;;'b;,/  
private static int THRESHOLD=10; e"(l  
/* (non-Javadoc) i$[wgvJIV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O-B~~$g  
*/ ZxkX\gl91  
public void sort(int[] data) { pj>b6^TI6C  
int[] stack=new int[MAX_STACK_SIZE]; Jo Qzf~  
]4SnOSV?S  
int top=-1; `84pql,  
int pivot; WL-+;h@VQ  
int pivotIndex,l,r; mLX1w)=r  
w] LN(o:  
stack[++top]=0; *>%34m93  
stack[++top]=data.length-1; @<Au|l`  
T.="a2iS2  
while(top>0){ \V`O-wcJ]S  
int j=stack[top--]; Yf Udpa0  
int i=stack[top--]; cAC2Xq  
, RfU1R  
pivotIndex=(i+j)/2; _H@s^g  
pivot=data[pivotIndex]; u.iFlU   
Us.yKAHPV  
SortUtil.swap(data,pivotIndex,j); :Bp{yUgi@  
D4'"GaCv  
file://partition >U~.I2sz  
l=i-1; d}tn/Eu?B  
r=j; Pa 2HFy2  
do{ vgOmcf%;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C3-l(N1O{  
SortUtil.swap(data,l,r); DrbjqQL+.  
} ,R0@`t1 p  
while(l SortUtil.swap(data,l,r); Ou/@!Y1  
SortUtil.swap(data,l,j); uxk&5RY  
?6Cbx6  
if((l-i)>THRESHOLD){ D h]+HF  
stack[++top]=i; u,[Yaw"L  
stack[++top]=l-1; N%6jZmKip  
} y=YD4m2W  
if((j-l)>THRESHOLD){ Vi`+2%4  
stack[++top]=l+1; tp$NT.z  
stack[++top]=j; &J^@TgqL^  
} "[@-p  
1iaNb[:QX  
} oTo'? E#  
file://new InsertSort().sort(data); : QSlctW  
insertSort(data); xXH%7%W'f  
} NFY,$  
/** AM##:4   
* @param data e%x$Cb:znn  
*/ hF+YZU]rT  
private void insertSort(int[] data) { E5 H6&XU  
int temp; ~CldqXeI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *rp@`W5  
} N::_JH? ^=  
} g]iWD;61  
} &bh?jW  
T*\'G6e  
} +Es3iE @  
?v#t{e0eQ  
归并排序: Wf 13Ab  
3s\2 9gq  
package org.rut.util.algorithm.support; 2uS&A \   
e{Om W  
import org.rut.util.algorithm.SortUtil; TuwH?{ FzK  
)gvX eJ  
/** $J[h(>-X  
* @author treeroot )H S|pS:  
* @since 2006-2-2 C5i]n? )S  
* @version 1.0 |k)h' ?  
*/ y&lj+j  
public class MergeSort implements SortUtil.Sort{ R[wy{4<y  
J[L$8y:  
/* (non-Javadoc) Xo(K*eIN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cv{rd##Y8  
*/ nE]R0|4h  
public void sort(int[] data) { dSsMa3X[n  
int[] temp=new int[data.length]; vb9G_Pfz  
mergeSort(data,temp,0,data.length-1); -{pcb7.xuv  
} ]. 1[H~5N  
0Z2![n  
private void mergeSort(int[] data,int[] temp,int l,int r){ >T.U\,om7  
int mid=(l+r)/2; p4<&NMG  
if(l==r) return ; `iv,aQ '  
mergeSort(data,temp,l,mid); 93)&  
mergeSort(data,temp,mid+1,r); @luv;X^%  
for(int i=l;i<=r;i++){ =B*,S#r  
temp=data; RNcHU  
} Wxb/|?,  
int i1=l; .cQwj L  
int i2=mid+1; s=~r. x  
for(int cur=l;cur<=r;cur++){ wjo xfPnf  
if(i1==mid+1) rxIfatp^  
data[cur]=temp[i2++]; m$*dPje  
else if(i2>r) KSqWq:W+  
data[cur]=temp[i1++]; /JtKn*?}:>  
else if(temp[i1] data[cur]=temp[i1++]; /0!6;PC<  
else ~7 C` a$  
data[cur]=temp[i2++]; +MGEO+  
} 6 jRF[N8  
} q,^^c1f  
$?(fiFC  
} tE9%;8;H  
>7@F4a  
改进后的归并排序: Ca*^U-  
FX+Ra@I!  
package org.rut.util.algorithm.support; fE|([ ` !  
Y=x]'3}^  
import org.rut.util.algorithm.SortUtil; $a(wM1S4  
+<"sC+2  
/** hCc_+/j|  
* @author treeroot C*/d%eHD  
* @since 2006-2-2 1 BAnf9  
* @version 1.0 xx#; )]WT  
*/ X[(u]h`  
public class ImprovedMergeSort implements SortUtil.Sort { 1$q SbQ  
ds4ERe /  
private static final int THRESHOLD = 10; iU~oPp[e  
Zc{at}{  
/* {O]Cj~}  
* (non-Javadoc) zo7Hm]W`  
* L@ql)Lc);  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H--(zxK  
*/ ,-vbR&  
public void sort(int[] data) { ZxwI< T:&  
int[] temp=new int[data.length]; &`Z>zT}  
mergeSort(data,temp,0,data.length-1); w6qx  
} 4@4$kro  
2Af1-z^^K  
private void mergeSort(int[] data, int[] temp, int l, int r) { -$QzbRF5R  
int i, j, k; ?r'rvu'/  
int mid = (l + r) / 2; R}#?A%,*  
if (l == r) 3(}W=oI  
return; `(q+@#)  
if ((mid - l) >= THRESHOLD) wZ0$ylEX  
mergeSort(data, temp, l, mid); #:v|/2   
else (m|p|rL  
insertSort(data, l, mid - l + 1); "/(J*)%{  
if ((r - mid) > THRESHOLD) |/Ggsfmby  
mergeSort(data, temp, mid + 1, r); (VI4kRj  
else *A@~!@XE4  
insertSort(data, mid + 1, r - mid); }{n[_:[7  
<JuP+\JAm  
for (i = l; i <= mid; i++) { ,l_"%xYx  
temp = data; nkG1&wiX  
} ) 'j7Ra  
for (j = 1; j <= r - mid; j++) { Z7V 1e<E  
temp[r - j + 1] = data[j + mid]; >j4;{r+eQw  
} ^{DXin 1O`  
int a = temp[l]; Ev,>_1#Xm  
int b = temp[r]; x<>#G~-  
for (i = l, j = r, k = l; k <= r; k++) { %|I~8>m  
if (a < b) { >KNiMW^V  
data[k] = temp[i++]; }:])1!a  
a = temp; z|Q)^  
} else { 5*/~) wN\U  
data[k] = temp[j--]; rUc2'Ct  
b = temp[j]; P6!c-\  
} N<zD<q  
} FMc$?mm  
} Tv_KdOv8  
1aP3oXLL  
/** % r`hW \4{  
* @param data <~X4&E]rT_  
* @param l tda#9i[pkH  
* @param i ve49m%NQ  
*/ :XC~G&HuF6  
private void insertSort(int[] data, int start, int len) { *39Y1+=)$$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3+%a  
} S1p 4.qJ  
} [_Fj2nb*  
} <U%4$83$  
} 8oK*NB29  
?1T)cd*  
堆排序: j^;f {0f  
oCg|* c|+  
package org.rut.util.algorithm.support; JfGU3d*c  
-GJ~xcf0  
import org.rut.util.algorithm.SortUtil; ~2PD%+e7]  
s;Q0  
/** `|)V]<  
* @author treeroot RZoSP(6  
* @since 2006-2-2 aZn]8jC%  
* @version 1.0 K~$A2b95  
*/ hfE5[  
public class HeapSort implements SortUtil.Sort{ 8s16yuM  
BpBMFEiP  
/* (non-Javadoc) ~_6~Fi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cc- liY "  
*/ />Kd w  
public void sort(int[] data) { 6hp>w{+  
MaxHeap h=new MaxHeap(); O_OgTa  
h.init(data); p{ X?_F  
for(int i=0;i h.remove(); # 2;6!_  
System.arraycopy(h.queue,1,data,0,data.length); )lg>'O  
} +txFdc  
2n+tc  
private static class MaxHeap{ UR?biq  
QiC}hj$  
void init(int[] data){ ]s_,;PGU  
this.queue=new int[data.length+1]; iga.B  
for(int i=0;i queue[++size]=data; ~ES6Qw`Oe  
fixUp(size); ywQ[>itMa  
} S9RH&/^H  
} yhm6%  
znnnqR0us  
private int size=0; 0h/bC)z  
=\~<##sRJ  
private int[] queue; u#!QIQW  
tf[)Q:|  
public int get() { a;bmZh  
return queue[1]; ZDny=&>#  
} K93L-K^J  
%4'<0  
public void remove() { eFKF9m  
SortUtil.swap(queue,1,size--); ;$,b w5  
fixDown(1); n=Ze p{^  
} JOwm|%>3a  
file://fixdown D[/h7Ha  
private void fixDown(int k) { X'FDQoH  
int j; ,/2&HZd  
while ((j = k << 1) <= size) { 9`y@2/!Y  
if (j < size %26amp;%26amp; queue[j] j++; v}\4/u  
if (queue[k]>queue[j]) file://不用交换 3qf?n5 "8  
break; 41uiW,  
SortUtil.swap(queue,j,k); K}|zKTh:?  
k = j; ES,T[  
} w3Lr~_j  
} {,aX|*1Ku~  
private void fixUp(int k) { ~(*2 :9*0  
while (k > 1) { \MqOHM.[  
int j = k >> 1; Jlp nR#@  
if (queue[j]>queue[k]) Sf*1Z~P|  
break; V#X#rDfJZ  
SortUtil.swap(queue,j,k); .n[;H;  
k = j; bT>MZK8b  
} aAKwC01?  
} 6|uv+$  
6}l[%8  
} s!<RWy+  
z@I'Ryalyc  
} tNoPpIu  
CiWz>HWH  
SortUtil: 9*Q6/?v  
%(&$CmS@  
package org.rut.util.algorithm; OEw#;l4 C  
{ty)2  
import org.rut.util.algorithm.support.BubbleSort; y>^FKN/  
import org.rut.util.algorithm.support.HeapSort; 8Sxk[`qx\K  
import org.rut.util.algorithm.support.ImprovedMergeSort; bT7+$^NHf  
import org.rut.util.algorithm.support.ImprovedQuickSort; 36e  
import org.rut.util.algorithm.support.InsertSort; r[g  
import org.rut.util.algorithm.support.MergeSort; xO[V>Ud  
import org.rut.util.algorithm.support.QuickSort;  T<oDLJA\  
import org.rut.util.algorithm.support.SelectionSort; S-'R84M,F  
import org.rut.util.algorithm.support.ShellSort; &NKb},~  
=U7P\s w2  
/** %u}#|+8}  
* @author treeroot -*A1[Z ?  
* @since 2006-2-2 -w"$[XP  
* @version 1.0 4mjlat(d  
*/ UpaF>,kM  
public class SortUtil { 71n3d~!O>  
public final static int INSERT = 1; kx?f,^ -  
public final static int BUBBLE = 2; 12VIP-ABK  
public final static int SELECTION = 3; r=-b@U.fk>  
public final static int SHELL = 4; Ptm=c6H('  
public final static int QUICK = 5; iD*21c<kd  
public final static int IMPROVED_QUICK = 6; .(RZ&*4  
public final static int MERGE = 7;  .0YcB  
public final static int IMPROVED_MERGE = 8; H-rxn  
public final static int HEAP = 9; 3{)!T;Wd  
OUq%d8 W  
public static void sort(int[] data) { A(_HM qA]  
sort(data, IMPROVED_QUICK); nz|6CP  
} e@Mg9VwDc  
private static String[] name={ Yt[LIn-v:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cO$xT;kK  
}; |k$6"dXSO  
P!Brw72  
private static Sort[] impl=new Sort[]{ Q5c3C &$6  
new InsertSort(), /!?b&N/d)  
new BubbleSort(), EHy15RL  
new SelectionSort(), r]@T9\9  
new ShellSort(), !(Ymc_s  
new QuickSort(), IR:GoD+  
new ImprovedQuickSort(), 7Kf  
new MergeSort(), jW]"Um-]  
new ImprovedMergeSort(), >AFQm  
new HeapSort() <Drm#2x!E  
}; yg.o?eML  
~&?57Sw*m  
public static String toString(int algorithm){ X J`*dgJ  
return name[algorithm-1]; Xdi<V_!BC-  
} $l2`@ia"  
9a[1s|>w-  
public static void sort(int[] data, int algorithm) { 0W0GSDx  
impl[algorithm-1].sort(data); 3! #|hI>f  
} ;A4qE W  
|a#=o}R_  
public static interface Sort { P3.  
public void sort(int[] data); o}DR p4;Ka  
} ClY`2  
Iprt ZqiL  
public static void swap(int[] data, int i, int j) { T+^Sa J  
int temp = data; ic5af"/(\  
data = data[j];  v%$l(  
data[j] = temp; ht*N[Pi4;  
} ,m[XeI  
} &?@[bD'T  
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