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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。 y>Nlj%XH  
插入排序: G ytI_an8  
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package org.rut.util.algorithm.support; m,)Re8W-  
(Dc dR:/=  
import org.rut.util.algorithm.SortUtil; N}.h_~6  
/** /Q{Jf+>R>  
* @author treeroot 0jj }jw  
* @since 2006-2-2 Hhfqb"2on  
* @version 1.0 80:na7$)#  
*/ Q"QrbU  
public class InsertSort implements SortUtil.Sort{ 5#WZXhlc}  
=EV8~hMyqh  
/* (non-Javadoc) I 9tdr<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rQ~%SUM7  
*/ 63F0Za}h  
public void sort(int[] data) { SM0=  
int temp; uQpV1o5iA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bjD0y cB[  
} Xo]FOJ 5  
} d{9jd{ _#G  
} 6,cyi|s  
w3,QT}WvY  
} PksHq77  
lc[\ S4  
冒泡排序: QN*'MA"M  
tJ'U<s  
package org.rut.util.algorithm.support; .@1\26<  
) c+ ZQq  
import org.rut.util.algorithm.SortUtil; nFxogCn   
t%N#Yh!  
/** kk^KaD4dA  
* @author treeroot sA}=o.\j:  
* @since 2006-2-2 Yckl,g_  
* @version 1.0 srg#<oH|{c  
*/ C]eb=rw$  
public class BubbleSort implements SortUtil.Sort{ P#76ehR]K  
shP,-Vs #  
/* (non-Javadoc) #gi&pR'$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ydoCoD w  
*/ u~a<Psp&|  
public void sort(int[] data) { 'nW:2(J  
int temp; `?`\!uP"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?vM{9!M  
if(data[j] SortUtil.swap(data,j,j-1); w[]7{ D];  
} +O\6p  
} 1gCp/m2r7  
} Nu|?s-   
} 9> [ $;>  
#J1a `}x  
} o5AyJuS-u$  
]]9eUw=  
选择排序: "4Anh1,js  
'B6D&xn'%&  
package org.rut.util.algorithm.support; O+z-6:`  
%Z.>)R4  
import org.rut.util.algorithm.SortUtil; udW, P  
m!!uf/  
/** [.|tD  
* @author treeroot tXPS@4F  
* @since 2006-2-2 i[WTp??Uv  
* @version 1.0 U4^dDj  
*/ /:C"n|P7Z  
public class SelectionSort implements SortUtil.Sort { 7F.>M  
/I".n]  
/* Neey myW  
* (non-Javadoc) sF(U?)48  
* 8Ck:c45v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $6ITa}o  
*/ }7Pd\tG]  
public void sort(int[] data) { ( 3=.3[  
int temp; [wIyW/+  
for (int i = 0; i < data.length; i++) { WYI? M  
int lowIndex = i; NoiU5pP  
for (int j = data.length - 1; j > i; j--) { 1~ZDHfd5  
if (data[j] < data[lowIndex]) { rpy`Wz/[  
lowIndex = j; SE%i@}  
} Gvj@?62  
} iTxn  
SortUtil.swap(data,i,lowIndex); =:9n+7~$  
} ;jI\MZ~l\  
} G}] ZZ  
g/JAr<  
} -+?0|>Nh  
qH"0?<$9  
Shell排序: N tg#-_]  
24|:VxO  
package org.rut.util.algorithm.support; kD"dZQx  
:i?Z1x1`  
import org.rut.util.algorithm.SortUtil; U3A>#EV  
+.[#C5  
/** gy~M]u{  
* @author treeroot :n>:*e@w%  
* @since 2006-2-2 ZhM-F0;`  
* @version 1.0 o<T>G{XYB  
*/ dI'C[.zp[  
public class ShellSort implements SortUtil.Sort{ 'Y>!xm   
u4fTC})4{C  
/* (non-Javadoc) j+Wgjf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (?q]E$ @  
*/ 5C{X$7u  
public void sort(int[] data) { Z&J417buk  
for(int i=data.length/2;i>2;i/=2){ yTbBYx9Bi  
for(int j=0;j insertSort(data,j,i); RwT.B+Onuy  
} bNIT 1'v  
} p 4(-  
insertSort(data,0,1); p7 2+:I  
} E/AM<eN  
c( gUH  
/** "ve?7&G7U  
* @param data mQ' ]0DS  
* @param j rPr#V1}1a  
* @param i rA{h/T"  
*/ 28Q`O$=v  
private void insertSort(int[] data, int start, int inc) { 4#4kfGoT  
int temp; uA\A4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v }P~g  
} _BcB@a  
} OJkPlDym  
} ^!Bpev  
(}] 74Lc  
} $+*ZsIo   
*GD 1[:  
快速排序: 2NE/ZqREg  
x-Xb4?{  
package org.rut.util.algorithm.support; 6^|bKoN/ f  
`qs'={YtU  
import org.rut.util.algorithm.SortUtil; C|z`hNp  
~oSLWA9  
/** t}NxD`8  
* @author treeroot & }k=V4L  
* @since 2006-2-2 l\MiG Na  
* @version 1.0 aU#8W.~  
*/ M(oW;^B  
public class QuickSort implements SortUtil.Sort{ <2|x]b 8  
5Ko "-  
/* (non-Javadoc) 9DPf2`*$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~V5k  
*/ '[Nu;(>a  
public void sort(int[] data) { .%~ L  
quickSort(data,0,data.length-1); dbnH#0i  
} <8-I:o]mF  
private void quickSort(int[] data,int i,int j){ 9x{T"'  
int pivotIndex=(i+j)/2; 15nc  
file://swap qxd{c8  
SortUtil.swap(data,pivotIndex,j); ^_2Ki   
NW!e@;E+i  
int k=partition(data,i-1,j,data[j]); Km\M /j|  
SortUtil.swap(data,k,j); !M3IuDN  
if((k-i)>1) quickSort(data,i,k-1); :!{aey  
if((j-k)>1) quickSort(data,k+1,j); uiHlaMf  
`EWeJ(4Z@  
} )Tb{O  
/** 4p %`Lv  
* @param data S7N54X2JwL  
* @param i @JN%P} 4)  
* @param j )t)tk=R9N  
* @return EXb{/4  
*/ /[{?zS{  
private int partition(int[] data, int l, int r,int pivot) { Td8'z'  
do{ t(}&<<1Bz  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wiwJD}3h'  
SortUtil.swap(data,l,r); nC>#@*+jK  
} ;O5NZa!.73  
while(l SortUtil.swap(data,l,r); 9f BD.9A  
return l; :5@7z9 >  
} w8> T ~Mv  
VFG)|Z  
} .@=d I  
:i:Zc~%  
改进后的快速排序: uY'Ib[H  
RZ?>>Ll6  
package org.rut.util.algorithm.support; 5]'iSrp  
n7{1m$/  
import org.rut.util.algorithm.SortUtil; !kmo% +  
I0OsaX'  
/** Prjl ;[I}  
* @author treeroot X*FK6,Y|(  
* @since 2006-2-2 G_dia6  
* @version 1.0 *OsXjL`f  
*/ O#u)~C?)8  
public class ImprovedQuickSort implements SortUtil.Sort { 'OF)`5sj  
/vU9eh"%  
private static int MAX_STACK_SIZE=4096; qn4Dm ^  
private static int THRESHOLD=10; B=n]N+  
/* (non-Javadoc) 2.; OHQTE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .l#Pmd!  
*/ _KD(V2W  
public void sort(int[] data) { ijoR(R^r  
int[] stack=new int[MAX_STACK_SIZE]; R`s /^0  
)NyGV!Zuu  
int top=-1; t'[vN~I'  
int pivot; $,6=.YuY  
int pivotIndex,l,r; 6 t A?<S  
QW~o+N~~  
stack[++top]=0; p8F|]6Z  
stack[++top]=data.length-1;  NPf,9c;  
}m0Lr:vq<r  
while(top>0){ M5P63=1+  
int j=stack[top--]; FIG5]u  
int i=stack[top--]; )Dqv&^  
3c-ve$8u~  
pivotIndex=(i+j)/2; I94;1(Cs%  
pivot=data[pivotIndex]; F}.Af=<Q  
39k P)cD  
SortUtil.swap(data,pivotIndex,j); nz>A\H  
$dwv1@M2  
file://partition %iJ6;V 4  
l=i-1; r-[z!S  
r=j; %e1<N8E4  
do{ !q7M+j4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #2cH.`ty  
SortUtil.swap(data,l,r); ;>Z#1~8  
} IXz ad  
while(l SortUtil.swap(data,l,r); ,QKG$F  
SortUtil.swap(data,l,j); $F/&/Aa  
QP\vN|r  
if((l-i)>THRESHOLD){ z{ymVd0#  
stack[++top]=i; ;7 IVg[f  
stack[++top]=l-1; 7Y#b7H  
} tQ|b?3  
if((j-l)>THRESHOLD){ ]JhtO{  
stack[++top]=l+1; RA\H?1;8C  
stack[++top]=j; e3(0L I  
} poXkH@[O  
-$T5@  
} :mg#&MZj<  
file://new InsertSort().sort(data); &Kjqdp  
insertSort(data); A= ,q&  
} *>\RGL;]8  
/** Z;%qpsq  
* @param data kMI\GQW  
*/ Ex@#!fz{%  
private void insertSort(int[] data) { Sb,{+Wk  
int temp; RNi&OG(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Oe;9[=L[  
} 2etlR  
} 7:1Hgj(  
} '{7A1yJnY%  
kg !@i7  
} +vYm:  
c4; `3  
归并排序: ]v9<^!  
| sQ5`lV?  
package org.rut.util.algorithm.support; px-*uh<  
BwL: B\  
import org.rut.util.algorithm.SortUtil; +;*])N%q  
]k,fEn(  
/** 65<p:  
* @author treeroot Y-,#3%bT;;  
* @since 2006-2-2 f$H"|Mb e  
* @version 1.0 lezdJ  
*/ F.@yNr"  
public class MergeSort implements SortUtil.Sort{ TmQ2;3%  
Wt4!XV  
/* (non-Javadoc) %!eK"DKG^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1) @Wcc.  
*/ :X ;8$.z  
public void sort(int[] data) { Zj}DlNkVu  
int[] temp=new int[data.length]; |d,1mmv@K  
mergeSort(data,temp,0,data.length-1); g[eI-J+F  
} S++}kR);  
ZZeqOu7^  
private void mergeSort(int[] data,int[] temp,int l,int r){ g5Hs=c5=\  
int mid=(l+r)/2; b LxV  
if(l==r) return ; my04>6j0  
mergeSort(data,temp,l,mid); *, {b]6v  
mergeSort(data,temp,mid+1,r); n P69W  
for(int i=l;i<=r;i++){ =B?uNoe  
temp=data; @&2T0UB  
} UO!OO&l!  
int i1=l; !\"C<*5  
int i2=mid+1; !CsoTW9C:  
for(int cur=l;cur<=r;cur++){ SJy?^  
if(i1==mid+1) &Nec(q<  
data[cur]=temp[i2++]; QDgOprha  
else if(i2>r) p*dez!  
data[cur]=temp[i1++]; 3Um\?fj>}(  
else if(temp[i1] data[cur]=temp[i1++]; Q2tGe~H  
else V;)'FJ)]  
data[cur]=temp[i2++]; AS8T!  
} Mr`u!T&sc  
} 4y P $l  
%*/?k~53  
} =e ;\I/  
52:oe1-8  
改进后的归并排序: ; 4S#6#  
;JAe=wt^'I  
package org.rut.util.algorithm.support; 3J [P(G>Q  
;w@:  
import org.rut.util.algorithm.SortUtil; p R~PB  
i#Wl?(-i  
/** VW'e&v1.  
* @author treeroot vKI,|UD&-  
* @since 2006-2-2 "+7~C6[s  
* @version 1.0 &[kwM3 95  
*/ qkR.{?x  
public class ImprovedMergeSort implements SortUtil.Sort { GLk7# Y  
 [bv.`  
private static final int THRESHOLD = 10; OCR x|  
3[8'pQ!&  
/* <xc"y|7X  
* (non-Javadoc) q WP1i7]=/  
* a_pkUOu6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s+ 0$_&xR  
*/ 6}|/~n  
public void sort(int[] data) { r3iNfY b  
int[] temp=new int[data.length]; FiIN \  
mergeSort(data,temp,0,data.length-1); !H.&"~w@  
} IOfo]p-  
) d\Se9!  
private void mergeSort(int[] data, int[] temp, int l, int r) { e"2 wXd_}  
int i, j, k; JQ.ZAhv  
int mid = (l + r) / 2; nYE_WXY3V  
if (l == r) 8LiRZ"  
return; 43 |zjE  
if ((mid - l) >= THRESHOLD) Oj<2_u  
mergeSort(data, temp, l, mid); Ujw ^j  
else \DfvNeF  
insertSort(data, l, mid - l + 1); ch< zpo:  
if ((r - mid) > THRESHOLD) B4J^ rzK  
mergeSort(data, temp, mid + 1, r); VS 8|lgQ  
else  {kmaMP  
insertSort(data, mid + 1, r - mid); )"f>cYF  
Q&n|tQ*4  
for (i = l; i <= mid; i++) { v 7Pv&|  
temp = data; ,Cx5( ~kU  
} -/FCd(  
for (j = 1; j <= r - mid; j++) { . vYGJ8(P  
temp[r - j + 1] = data[j + mid]; 8n2* z  
} LkNfcBa_  
int a = temp[l]; Mu{mj4Y{  
int b = temp[r]; E!ZDqq  
for (i = l, j = r, k = l; k <= r; k++) { 2{{M{#}S.  
if (a < b) { C~6aX/:  
data[k] = temp[i++]; [*50Ng>P`  
a = temp; v[HxO?x^  
} else { .8wR;^  
data[k] = temp[j--]; *d(wO l5[  
b = temp[j]; m ;[z)-&"  
} FJ#V"|}  
} _|~2i1 Ms,  
} LsBDfp5/  
drN^-e  
/** 8zZR %fZ  
* @param data <G6wpf8M  
* @param l <Z#u_:5@  
* @param i ~;U!?  
*/ &_!BMzp4  
private void insertSort(int[] data, int start, int len) { >~XX'}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '+-R 7#  
} yqCy`TK8  
} #7'ww*+  
} W+1V&a}E  
} S0"O U0`N  
ts)0+x  
堆排序: e6{/e+/R  
VsUEp_I  
package org.rut.util.algorithm.support; '!En,*'IS  
"jAV7lP  
import org.rut.util.algorithm.SortUtil; S _#UEf  
lt(,/  
/** (|bht0  
* @author treeroot r;S%BFMJS  
* @since 2006-2-2 #JTi]U6`  
* @version 1.0 U:8^>_  
*/ 6G1Z"9<2*  
public class HeapSort implements SortUtil.Sort{ @dcW0WQ\  
qf7.Sh  
/* (non-Javadoc) C'mmo&Pd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s-k-|4  
*/ eW\_9E)cY  
public void sort(int[] data) { f'r/Q2{n  
MaxHeap h=new MaxHeap(); {feS-.Khv  
h.init(data); - FE)  
for(int i=0;i h.remove(); x6F\|nb  
System.arraycopy(h.queue,1,data,0,data.length); !.p!  
} @Z.Ne:*J  
iiRK3m  
private static class MaxHeap{ Fbk<qQH  
y(N-1  
void init(int[] data){ 9E (>mN  
this.queue=new int[data.length+1]; cL=P((<K?  
for(int i=0;i queue[++size]=data; Gt-  -7S  
fixUp(size); E8IWHh_  
} +Cau/sPXL  
} tD>m%1'&  
q9Fc0(&Vf  
private int size=0; ")Bf^DV  
}rGDM  
private int[] queue; ]`u{^f  
FeCQGT  
public int get() { K$(U>D|  
return queue[1]; WgY\m&  
} vqL{~tR  
sW=@G'}3  
public void remove() { nPv2: x  
SortUtil.swap(queue,1,size--); mM}|x~\R  
fixDown(1); h8S%Q|-  
} b^A&K@[W#,  
file://fixdown o AQ92~b  
private void fixDown(int k) { 0.+iVOz+Y  
int j; s?_b[B d  
while ((j = k << 1) <= size) { 6`+DBr  
if (j < size %26amp;%26amp; queue[j] j++; #0^Q UOp  
if (queue[k]>queue[j]) file://不用交换 /$q;-/DnTZ  
break; YQ?|Vb U  
SortUtil.swap(queue,j,k); ;tKL/eI  
k = j;  W#??fae  
} 3b PVKsY  
} JgK?j&!hs:  
private void fixUp(int k) { s]B^Sz=  
while (k > 1) { {5_*f)$[H  
int j = k >> 1; -j<UhW  
if (queue[j]>queue[k]) Z{ p;J^:  
break; e HOm^.gd  
SortUtil.swap(queue,j,k); <{cPa\  
k = j; u1<xt1K  
} $p9XXZ"*  
} A+[wH(  
6+LX oR'  
} V7^?jy&&  
0@xuxm/i  
} g%\e80~1(  
pp{%\td  
SortUtil: I5 2wTl0  
4P` \fz  
package org.rut.util.algorithm;  sRoZvp 5  
t+h"YiT  
import org.rut.util.algorithm.support.BubbleSort; J(l6(+8  
import org.rut.util.algorithm.support.HeapSort; +)7NWR\  
import org.rut.util.algorithm.support.ImprovedMergeSort; {0QA+[Yd&!  
import org.rut.util.algorithm.support.ImprovedQuickSort; Y ,}p  
import org.rut.util.algorithm.support.InsertSort; yp :yS  
import org.rut.util.algorithm.support.MergeSort; "4r5n8  
import org.rut.util.algorithm.support.QuickSort; (@&|  
import org.rut.util.algorithm.support.SelectionSort; iP_rEi*-J  
import org.rut.util.algorithm.support.ShellSort; VD=$:F]  
*w%;$\^  
/** 4&&j7$aV  
* @author treeroot c9ghR0WM  
* @since 2006-2-2 xw?G?(WO  
* @version 1.0 t zV"|s=o  
*/ |E?%Cj^W  
public class SortUtil { neZ_TT/3K  
public final static int INSERT = 1; )p!dql K  
public final static int BUBBLE = 2; esLY1c%"/  
public final static int SELECTION = 3; #}jf TM  
public final static int SHELL = 4; x K_$^c.  
public final static int QUICK = 5; :z"Uw*  
public final static int IMPROVED_QUICK = 6; E8-p ,e,  
public final static int MERGE = 7; "#m*`n  
public final static int IMPROVED_MERGE = 8; %/>_o{"hw  
public final static int HEAP = 9; ^Xb!dnT.*a  
JP@UvDE|  
public static void sort(int[] data) { mKn[>M1  
sort(data, IMPROVED_QUICK); 0,/[r/=jT  
} | _S9U|  
private static String[] name={ b,K1EEJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" As>po +T*  
}; -eNi;u  
*}2o \h6Q  
private static Sort[] impl=new Sort[]{ K:9.fTCs*  
new InsertSort(), %%DK?{jo`  
new BubbleSort(), f<zh-Gq  
new SelectionSort(), B! -W765Y  
new ShellSort(), "#JoB X@yE  
new QuickSort(), wr#+q1 v  
new ImprovedQuickSort(), :x;D- kZ  
new MergeSort(), :Mt/6}  
new ImprovedMergeSort(), 1yE~#KpH  
new HeapSort() PH=wP ft  
}; ( NiuAy  
oYqC"g&4Z  
public static String toString(int algorithm){ "\V:W%23W{  
return name[algorithm-1]; `[ne<F?e  
} [S9nF  
$23R%8j   
public static void sort(int[] data, int algorithm) { Y< M}'t  
impl[algorithm-1].sort(data); %EVg.k$  
} OZv&{_b_  
](0A/,#q6  
public static interface Sort { S@*@*>s^  
public void sort(int[] data); ll5Kd=3  
} VLOyUt~O#  
f|apk,o_  
public static void swap(int[] data, int i, int j) { SD697L9  
int temp = data; o@>5[2b4  
data = data[j]; CiMN J  
data[j] = temp; y\%4Dir  
} t71 0sWh{  
} :)MZgW  
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