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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。 WbZ{) i  
插入排序: x9}D2Ui  
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package org.rut.util.algorithm.support; z[:UPPbW  
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import org.rut.util.algorithm.SortUtil; W70J2  
/** #q.Q tDz  
* @author treeroot lN94 b3_W  
* @since 2006-2-2 BEM_y:#  
* @version 1.0 ct='Z E  
*/ j3 d=O!  
public class InsertSort implements SortUtil.Sort{ (5[|h  
fF !Mmm"  
/* (non-Javadoc) [OFg (R-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~@=:I  
*/ 5fi6>>  
public void sort(int[] data) { A-gNfXP,D  
int temp; gNr/rp9A$m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pnq[r2#]:  
} ?Pz:H/ $  
} l/[0N@r~  
} %jEdgD%xV  
}5dYmny  
} :_v/a+\n  
SpbOvY=>  
冒泡排序: O)C y4[  
#iD5& klo\  
package org.rut.util.algorithm.support; U1(<1eTyu  
\.p{~ Hv  
import org.rut.util.algorithm.SortUtil; | ZBv;BW  
T)Z2=5V  
/** 9u<4Q_I`  
* @author treeroot =)5eui>{  
* @since 2006-2-2 XE);oL2xP  
* @version 1.0 #UGtYD}"  
*/ H?tonG.^(  
public class BubbleSort implements SortUtil.Sort{ Kd}cf0  
J \U}U'qP  
/* (non-Javadoc) S N_!o2F2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^S!^$d*  
*/ 3XY;g{`=q  
public void sort(int[] data) { n,sl|hv2U  
int temp; )qs>Z?7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @2Xw17[f35  
if(data[j] SortUtil.swap(data,j,j-1); Wj2]1A  
} ^G'8!!ys  
} qH'T~# S  
} a>A29*q  
} S)Cd1`Gf  
B:qH7`s  
} ws9F~LmLbr  
s hjb b  
选择排序: l]R O'  
01Bs7@"+  
package org.rut.util.algorithm.support; ,aS6|~ac4  
u )+;(Vd  
import org.rut.util.algorithm.SortUtil; >-rDBk ;K  
)M(;:#le  
/** v,w/g|  
* @author treeroot 'J~{8w,.  
* @since 2006-2-2 +^$FA4<~  
* @version 1.0 @$'k1f(u>  
*/ ?H8w/{J   
public class SelectionSort implements SortUtil.Sort { Dg~r%F  
p]=a:kd4J  
/* [/ uqH  
* (non-Javadoc) GKdQ  
* OI;0dS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yQb^]|XG  
*/ # JHicx\8l  
public void sort(int[] data) { zOA{S~>  
int temp; d U n+?  
for (int i = 0; i < data.length; i++) { WCxt-+#  
int lowIndex = i; v!(B S,  
for (int j = data.length - 1; j > i; j--) { kzPHPERA]  
if (data[j] < data[lowIndex]) { ~M`-sSjZs  
lowIndex = j; Fy^*@&  
} x,YC/J  
} /CX_@%m}e=  
SortUtil.swap(data,i,lowIndex); HRO :U%  
} Aa t _5p  
} Arh0m. w  
],ioY*4G  
} HHa XK  
cn (-{dCXM  
Shell排序: 2Jo'!|]  
M@@l>"g@  
package org.rut.util.algorithm.support; 0g% `L_e_  
tqyR~  
import org.rut.util.algorithm.SortUtil; Zh.5\&bm  
'5zolp%St  
/** IB#L5yN r  
* @author treeroot ~oO>6  
* @since 2006-2-2 xaQ]Vjw  
* @version 1.0 ("UcjB^62  
*/ "w ] Bq0  
public class ShellSort implements SortUtil.Sort{ R,[ dEP  
lN$#lyy  
/* (non-Javadoc) Dd8*1,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (xw)pR  
*/ e"HA.t[A  
public void sort(int[] data) { j4H]HGHv  
for(int i=data.length/2;i>2;i/=2){ Pe[~kog,TP  
for(int j=0;j insertSort(data,j,i); Yt79W  
} F9(*MP|  
} /bm$G"%d  
insertSort(data,0,1); y]$%>N0vLX  
} Dz$GPA   
U{(B)dFTH  
/** $%9.qy\8  
* @param data EJ7}h?a]U_  
* @param j C5mq@$6  
* @param i SQ7Ws u>T@  
*/ 7i?"akr4  
private void insertSort(int[] data, int start, int inc) { ximW!y7  
int temp; b4%sOn,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u*:B 9E  
} b*w izd  
} ${\iHg[vZ  
} x]o~ %h$  
yT<6b)&*&  
} TZ8:3ti  
Y?G9d6]Lk6  
快速排序: "&(.Z(  
S*,DX~vig  
package org.rut.util.algorithm.support; BUR96YN.  
?B> { rj  
import org.rut.util.algorithm.SortUtil; )U0`?kD  
TtA6N8G  
/** \FOoIY!.x  
* @author treeroot K(P24Z\#  
* @since 2006-2-2 fWo}gH~  
* @version 1.0 297X).  
*/ Ax &Z=  
public class QuickSort implements SortUtil.Sort{ j} ^?3<  
e7X#C)  
/* (non-Javadoc) ,S(^r1R   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eZpyDw C{  
*/ OxGKtnAjf  
public void sort(int[] data) { F)dJws7-  
quickSort(data,0,data.length-1); bHx09F]  
} ._2#89V  
private void quickSort(int[] data,int i,int j){ 1&%6sZN  
int pivotIndex=(i+j)/2; "b)Y5[nW  
file://swap vsc)EM ]  
SortUtil.swap(data,pivotIndex,j); aH7i$U&  
nn'a` N  
int k=partition(data,i-1,j,data[j]); !,8jB(  
SortUtil.swap(data,k,j); }pk)\^/w/  
if((k-i)>1) quickSort(data,i,k-1); z|,YO6(L  
if((j-k)>1) quickSort(data,k+1,j); ' lt5|  
2JY]$$K7  
} ]o}g~Xn  
/** :E ]Ys  
* @param data hKa<9>MI`  
* @param i 8 nCw1   
* @param j ^5j+O.zgN  
* @return zJC!MeN  
*/ F91uuSSL  
private int partition(int[] data, int l, int r,int pivot) { f|U;4{ k  
do{ s|*0cK!K^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )IN!CmpN  
SortUtil.swap(data,l,r); &/XRiK1"0  
} GQ=Zp3[  
while(l SortUtil.swap(data,l,r); OCR`1  
return l; ~<[$.8*  
} byALM  
z4 GcS/3K  
} )UBU|uYR\  
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改进后的快速排序: Sg#$ B#g  
x"/DCcZ  
package org.rut.util.algorithm.support; k:1p:&*m  
aMa ICM  
import org.rut.util.algorithm.SortUtil; \<k5c-8Hb  
gumT"x .^  
/** QH~;B[->  
* @author treeroot  AT@m_d  
* @since 2006-2-2 7X+SK&PX  
* @version 1.0 SZVNu*G!H  
*/ yjcZTvjJ  
public class ImprovedQuickSort implements SortUtil.Sort { u@ MUcW  
*`D}voU  
private static int MAX_STACK_SIZE=4096; IXjFK  
private static int THRESHOLD=10; S87E$k  
/* (non-Javadoc) DxuT23. (  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HW|5'opF  
*/ z;T_%?u  
public void sort(int[] data) { XPJsnu  
int[] stack=new int[MAX_STACK_SIZE]; V { #8+  
G;RFY!o  
int top=-1; FA5|`  
int pivot; =|}_ASbzw  
int pivotIndex,l,r; R-2NJ0F7  
<V[Qs3uo(  
stack[++top]=0; 1Ce7\A  
stack[++top]=data.length-1; Z5x&P_.x[  
RCZ"BxleU  
while(top>0){ r{+P2MPW  
int j=stack[top--]; QMO.Bnek  
int i=stack[top--]; :V,agAMn  
(!cG*FrN  
pivotIndex=(i+j)/2; R1sWhB99  
pivot=data[pivotIndex]; > nHaMj  
!TNp|U!  
SortUtil.swap(data,pivotIndex,j); &TgS$c5k  
E;`@S  
file://partition exW|c~|m{A  
l=i-1; G_ -8*.  
r=j; 7+(on  
do{ `kE ;V!n?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RA];hQI?  
SortUtil.swap(data,l,r); o]R*6$  
} '{>R-}o[3  
while(l SortUtil.swap(data,l,r); sej$$m R  
SortUtil.swap(data,l,j); 7uUo DM  
(5rfeSA^  
if((l-i)>THRESHOLD){ e\8|6< o[  
stack[++top]=i; +aY]?]  
stack[++top]=l-1; X RQz~Py  
} H18.)yHX  
if((j-l)>THRESHOLD){ LyRbD$m  
stack[++top]=l+1; "O}u2B b  
stack[++top]=j; qV$\E=%fhM  
} [SKN}:D  
0Dt-!Q7  
} QsemN7B "<  
file://new InsertSort().sort(data); *F:)S"3_~e  
insertSort(data); u~pBMg ,  
} MpNgp )%>  
/** 8-|| Nh  
* @param data uM"_3je{W2  
*/ 0jJ:WPR  
private void insertSort(int[] data) { &~Hx!]uc  
int temp; pie8 3Wy>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y5fz_ [("  
}  i)!2DXn  
} z=FOymv C  
} mb\"qD5  
I4"(4u@P  
}  `1`Qu!  
969Y[XQ  
归并排序: {P {h|+;  
Tr@|QNu  
package org.rut.util.algorithm.support; wU}%]FqtZ=  
&7J-m4BI  
import org.rut.util.algorithm.SortUtil; %&iodo,EP'  
+0l-zd\  
/** Q\W?qB_  
* @author treeroot {*PbD;/f  
* @since 2006-2-2 WGwIc7  
* @version 1.0 ` n#Db  
*/ : L+%5Jq  
public class MergeSort implements SortUtil.Sort{ 9)?_[|2  
~T^,5Tz1j  
/* (non-Javadoc) cM_!_8o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M!Ua/g=u  
*/ \=qZ),bU@  
public void sort(int[] data) { 1c\KRK4  
int[] temp=new int[data.length]; C0gY  
mergeSort(data,temp,0,data.length-1); agGgj>DDd  
} 8=MNzcA }  
PjG^L FX  
private void mergeSort(int[] data,int[] temp,int l,int r){ H~NK:qRzK  
int mid=(l+r)/2; 11iV{ h  
if(l==r) return ; Y*QoD9<T?;  
mergeSort(data,temp,l,mid); wgUgNwd1  
mergeSort(data,temp,mid+1,r); kNd(KQ<.17  
for(int i=l;i<=r;i++){ ^wIg|Gc  
temp=data; fW w+'xF!  
} HO_!/4hrU  
int i1=l; egmNX't6f5  
int i2=mid+1; yZV Y3<]  
for(int cur=l;cur<=r;cur++){ r"|UgCc  
if(i1==mid+1) O))YJh"'_  
data[cur]=temp[i2++]; #&}j'oD|N  
else if(i2>r) vR7S !  
data[cur]=temp[i1++]; HcQ)XJPK  
else if(temp[i1] data[cur]=temp[i1++]; QJy1j~9x  
else 2,6~;R  
data[cur]=temp[i2++]; 0N87G}Xu  
} yvWM]A  
} 9RPZj>ezjA  
;(-Wc9=  
} tc0(G~.N  
$@HW|Y  
改进后的归并排序: eg1Mdg\a  
FnPn#Cv>*  
package org.rut.util.algorithm.support; U4N H9-U'  
YuUJgt .1  
import org.rut.util.algorithm.SortUtil; wEF"'T  
z"c,TlVN3  
/** 4YSVy2x  
* @author treeroot Lz&FywF-l  
* @since 2006-2-2 D>-srzw  
* @version 1.0 7 <ZGNxZ~  
*/ l@0${&n  
public class ImprovedMergeSort implements SortUtil.Sort { Vq599M:)V  
BJgHel+N  
private static final int THRESHOLD = 10; &. MUSqo9  
\1O wZ@  
/* t"Bp # U1  
* (non-Javadoc) #p<(2wN  
* _fdD4-2U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jmG)p|6  
*/ 9tWpxrig%  
public void sort(int[] data) {  (l-l Y  
int[] temp=new int[data.length]; PA*1]i#2M=  
mergeSort(data,temp,0,data.length-1); 7_R[ =t  
} ?3%r:g4  
OFxCV`>ce  
private void mergeSort(int[] data, int[] temp, int l, int r) { <@$+uZt+  
int i, j, k; S.Q:O{]  
int mid = (l + r) / 2; Q?bCQZ{-Lh  
if (l == r) %ol\ sO|  
return; [Z2{S-)UM  
if ((mid - l) >= THRESHOLD) Ga_Pt8L6  
mergeSort(data, temp, l, mid); 8,IQ6Or|-2  
else ]XASim:A  
insertSort(data, l, mid - l + 1); qe5;Pq !G  
if ((r - mid) > THRESHOLD) _^g4/G#13c  
mergeSort(data, temp, mid + 1, r); IF  cre  
else xn>N/+,  
insertSort(data, mid + 1, r - mid); M.\XG}RR  
Y!`  pF  
for (i = l; i <= mid; i++) { jwg*\HO,s  
temp = data; 6!HYx  
} -,+~W#n  
for (j = 1; j <= r - mid; j++) { }5;/!P_A  
temp[r - j + 1] = data[j + mid]; Ng2Z7k  
} XmP,3KG2{S  
int a = temp[l]; h1)ny1;  
int b = temp[r]; $:yIe.F  
for (i = l, j = r, k = l; k <= r; k++) { vJ{F)0 K  
if (a < b) { F1S0C>N?5  
data[k] = temp[i++]; 1(pv 3  
a = temp; rp4{lHw>C/  
} else { aCJ-T8?'  
data[k] = temp[j--]; 9^8_^F  
b = temp[j]; O6,2M[a  
} _kc}:  
} &7,:: $cu  
} [Op^l%BC  
KF1Zy;  
/** } lXor~_i  
* @param data DS9-i2  
* @param l \<hHZS  
* @param i XSCcumde!  
*/ @ M4m!;rM  
private void insertSort(int[] data, int start, int len) { M~h.M PI  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A)gSOC{3F)  
} .mNw^>:cq  
} Z&4L///  
} w5yX~8UzJ  
} 0|]d^bo  
LqXVi80  
堆排序: 8;"9A  
}ik N  
package org.rut.util.algorithm.support; g{ ;OgS3>  
,:#h;4!VRF  
import org.rut.util.algorithm.SortUtil; a*t @k*d_  
;n.h!wmJ}  
/** Nobu= Z  
* @author treeroot g<ov` bF  
* @since 2006-2-2 "[rz*[o8I  
* @version 1.0 &grvlK  
*/ ;W|GUmADf  
public class HeapSort implements SortUtil.Sort{ R! n7g8I%  
89j:YfA=v  
/* (non-Javadoc) Q3Z?Z;2aR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N ]14~r=  
*/ N`{ 6<Z0  
public void sort(int[] data) { ZNl1e'  
MaxHeap h=new MaxHeap(); Vc6 >i|"-O  
h.init(data); +* F e   
for(int i=0;i h.remove(); D>^g2!b:  
System.arraycopy(h.queue,1,data,0,data.length); l D->1=z  
} H!6+x*P0  
(sI`FW_  
private static class MaxHeap{ hT,rcIkg:  
'? -N  
void init(int[] data){ 5wdKu,nq  
this.queue=new int[data.length+1]; P_b!^sq9  
for(int i=0;i queue[++size]=data; :yE0DS<_  
fixUp(size); *2}f $8  
} u\M xQIo'u  
} '@ p464  
ho)JY $#6  
private int size=0; }I MV@z B  
;y{(#X#  
private int[] queue; LitdO>%#2  
k ]T  
public int get() { Kv:Rvo  
return queue[1]; +sTPTCLE  
} WgG$ r  
)#1!%aQ  
public void remove() { I;1)a4Xc4R  
SortUtil.swap(queue,1,size--); 2ga8 G4dU  
fixDown(1); _>aP5g?Ep  
} ~{);Ab.9+  
file://fixdown oX*;iS X  
private void fixDown(int k) { lWd@  
int j; yyk@f%  
while ((j = k << 1) <= size) { @v:Eh  
if (j < size %26amp;%26amp; queue[j] j++; X&| R\v=}  
if (queue[k]>queue[j]) file://不用交换 y<wd~!>Ubu  
break; *0?@/2&  
SortUtil.swap(queue,j,k); bo@ ?`5  
k = j; SjY|aW+wAL  
} xG(iSuz  
} ycwkF$7  
private void fixUp(int k) { \{!,a  
while (k > 1) { KK5_;<  
int j = k >> 1; y"ss<`Cn  
if (queue[j]>queue[k]) 3Ijs V5a  
break; eE=2~ ylU  
SortUtil.swap(queue,j,k); >4-9 @i0FV  
k = j; @/ nGc9h  
} : 2$*'{mM  
} eX lJ=S}  
*W^a<Zm8>  
} g HkHAOe/  
GKOl{och  
} nz'6^D7`r  
G<$8g-O;D  
SortUtil: D%LYQ  
,!LY:pMK  
package org.rut.util.algorithm; U* c'xoP  
Fq!_VF^r  
import org.rut.util.algorithm.support.BubbleSort; I.(@#v7T  
import org.rut.util.algorithm.support.HeapSort; |W$|og'wC  
import org.rut.util.algorithm.support.ImprovedMergeSort; 61_-G#W  
import org.rut.util.algorithm.support.ImprovedQuickSort; `u R`O9)e  
import org.rut.util.algorithm.support.InsertSort; _ WPt zL  
import org.rut.util.algorithm.support.MergeSort; $uJc/  
import org.rut.util.algorithm.support.QuickSort; $duT'G, -  
import org.rut.util.algorithm.support.SelectionSort; .Pte}pM"v  
import org.rut.util.algorithm.support.ShellSort; g oyQ',+  
WC37=8mA  
/** <%`Rku  
* @author treeroot :<k (y?GB  
* @since 2006-2-2 nHH FHnFf  
* @version 1.0 9$U4x|n  
*/ ggitUQ+t;G  
public class SortUtil { H~mp*S  
public final static int INSERT = 1; Q$ Dx:  
public final static int BUBBLE = 2; E/wxX#]\  
public final static int SELECTION = 3; hW/Ve'x[  
public final static int SHELL = 4; (i1x<  
public final static int QUICK = 5; WHOX<YJs  
public final static int IMPROVED_QUICK = 6; Iz-mUD0;  
public final static int MERGE = 7; Q<g>WNb  
public final static int IMPROVED_MERGE = 8; /Hq  
public final static int HEAP = 9; '1xhP}'3)  
7fO<=ei:  
public static void sort(int[] data) { I"x~ 7  
sort(data, IMPROVED_QUICK); A>e-eD xi  
} q8-hbWNm4  
private static String[] name={ _dz ZS(7M6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }p)Hw2  
}; >SL mlK  
p >ua{}!L  
private static Sort[] impl=new Sort[]{ C984Ee  
new InsertSort(), W[a"&,okqO  
new BubbleSort(), sf[|8}(  
new SelectionSort(), 42A'`io[w]  
new ShellSort(), Y'bz>@1(  
new QuickSort(), MP<]-M'|<  
new ImprovedQuickSort(), W[qy4\.B  
new MergeSort(), rFkZ'rp74b  
new ImprovedMergeSort(), /V`SJ"  
new HeapSort() 5M~nNm[xJU  
}; vu91" 4Fa  
+]( y  
public static String toString(int algorithm){ E{ e  
return name[algorithm-1]; mvc ;.+  
} \>}#[?y  
zS|4@t\__  
public static void sort(int[] data, int algorithm) { Njr;Wa.r+  
impl[algorithm-1].sort(data); G!=(^G@J;  
} kaiK1/W0;  
Skr0WQ  
public static interface Sort { Yt,MXm\  
public void sort(int[] data); ={ -kQq  
} 44B D2`nF  
Fw{#4  
public static void swap(int[] data, int i, int j) { dT% eq7=  
int temp = data; E8"&gblg  
data = data[j]; 5#N<~  
data[j] = temp; Im!b-1  
} @>.aQE  
} Uf ]$I`T#  
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