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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(ikp>  
插入排序: [}}q/7Lp  
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package org.rut.util.algorithm.support; oq,*@5xV2  
&gI*[5v  
import org.rut.util.algorithm.SortUtil; :w7?]y6~S  
/** F| P?|  
* @author treeroot r&~]6 U  
* @since 2006-2-2 Q@*9|6-  
* @version 1.0 ?!3u ?Kd  
*/ O8-Z >;  
public class InsertSort implements SortUtil.Sort{ a%QgL&_5  
anORoK.  
/* (non-Javadoc) u]]mbER*t#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u_b6u@r7  
*/ n;>r  
public void sort(int[] data) { FS*J8)  
int temp; " ^!=e72  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F3x*dq2  
} []?*}o5&>T  
} G)gb5VW k  
} ]}.|b6\  
o ?aF  
} g``S SU  
c4bvJy8  
冒泡排序: 7Oi<_b  
w,X J8+B  
package org.rut.util.algorithm.support; X9rao n  
Dj3,SJ*x  
import org.rut.util.algorithm.SortUtil; 7_eV.'h  
Qz$Wp*  
/** Ix0#eoj  
* @author treeroot V=Z%y$1Bc  
* @since 2006-2-2 LCb0Kq}*/(  
* @version 1.0 -.-@|*5  
*/ ojVN -*5  
public class BubbleSort implements SortUtil.Sort{ >}d6)s|   
g O8~$Aj  
/* (non-Javadoc) |:`)sx3@#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) },O7NSG<o  
*/ SUL\|z`5  
public void sort(int[] data) { =r&i`L{]  
int temp; >VG*La' c  
for(int i=0;i for(int j=data.length-1;j>i;j--){ z*o2jz?t4  
if(data[j] SortUtil.swap(data,j,j-1); \JP9lJ3<  
} T`c:16I  
} }$ a *XY1  
} J?jxD/9Yb  
} IcNZUZGE  
GxE`z6%[  
} y"H(F,(N  
~ x J#NC+  
选择排序: JQW7y!Z  
EV;"]lC9  
package org.rut.util.algorithm.support; Ol;"}3*Z*  
$]a*ZHd;2&  
import org.rut.util.algorithm.SortUtil; &0+Ba[Z ^  
g$z6*bL  
/** r]S"i$  
* @author treeroot %xC}#RDf  
* @since 2006-2-2 FQ/z,it_i  
* @version 1.0 i3>_E <"9  
*/ uY3?(f#  
public class SelectionSort implements SortUtil.Sort { @J6V ,  
$`L |  
/* =$_kkVQ$  
* (non-Javadoc) K)eyFc  
* 6hHMxS^o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? O9|  
*/ ]Bz.6OR  
public void sort(int[] data) { w4RtIDW:  
int temp; `U>]*D68  
for (int i = 0; i < data.length; i++) { j(c;r>  
int lowIndex = i; |"}rC >+  
for (int j = data.length - 1; j > i; j--) { <V|\yH9  
if (data[j] < data[lowIndex]) { ~^o YPd52*  
lowIndex = j; `/(9 #E  
} (7X^z&2  
} d[p?B-7%  
SortUtil.swap(data,i,lowIndex); ; Ji3|=4u  
} $$'[ %  
} \WZSY||C|_  
/@",5U#  
} A=np ?wc  
G6X5`eLQ  
Shell排序: gi8f)MNP?~  
:T#f&|Gg;  
package org.rut.util.algorithm.support; Qn@[{%),4  
Q6CVMYT  
import org.rut.util.algorithm.SortUtil; hh-sm8  
t;t;+M|W  
/** Pe@*')o*  
* @author treeroot D#d/?\2  
* @since 2006-2-2 zSBR_N51  
* @version 1.0 1\/^X>@W{  
*/ X//=OpS`  
public class ShellSort implements SortUtil.Sort{ 48.4GwL7  
-s 7a\H{~  
/* (non-Javadoc) 0fN; L;v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #eKH'fE  
*/ p }3$7CR/  
public void sort(int[] data) { t~Q j$:\  
for(int i=data.length/2;i>2;i/=2){ )J 8mn*  
for(int j=0;j insertSort(data,j,i);  wKbU}29c  
} $IJ"fs  
} kXO c)  
insertSort(data,0,1); +[[^W;<.l  
} ].@8/. rg  
w$jSlgUHy)  
/** *d-JAE  
* @param data cEGR?4z  
* @param j 9x#T j/5%  
* @param i @={ qy}  
*/ p uW  
private void insertSort(int[] data, int start, int inc) { 6U1_Wk?   
int temp; /wi/i*;A  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x}OJ~Yk]  
} n/% M9osF  
} mJsU7bD`  
} r%`3*<ALV)  
|J~A )Bw?  
} 43*;"w=  
D4T(Dce  
快速排序: H?;@r1ZAn  
.RWq!Z=)3  
package org.rut.util.algorithm.support; _:KeSskuO  
hcR^?  
import org.rut.util.algorithm.SortUtil; 'T]Ok\  
)Dyyb1\)  
/** 88l{M[B2  
* @author treeroot Sd\oL*lN  
* @since 2006-2-2 )!'7!" $  
* @version 1.0 C-H6l6,  
*/ k>:\4uI|<\  
public class QuickSort implements SortUtil.Sort{ QiNLE'19^  
n]3Z~HoZ  
/* (non-Javadoc) ;33SUgX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E4<#6q  
*/ a#&\65D  
public void sort(int[] data) { H5be5  
quickSort(data,0,data.length-1); +ux`}L(  
} Li\b ,_C  
private void quickSort(int[] data,int i,int j){ )00jRuF  
int pivotIndex=(i+j)/2; ,W>-MPJn[8  
file://swap /$j,p E=  
SortUtil.swap(data,pivotIndex,j); /pJr%}sc  
jV#1d8qm  
int k=partition(data,i-1,j,data[j]); Gg%pU+'T  
SortUtil.swap(data,k,j); 0"i QHi  
if((k-i)>1) quickSort(data,i,k-1); 0<nW nD,z  
if((j-k)>1) quickSort(data,k+1,j); |wuN`;gc"  
0,6! 6>BOT  
} b 2~5LZ  
/** <SRo2rjRa  
* @param data [!4V_yOb  
* @param i J,k.*t:  
* @param j #_zj5B38E  
* @return !ozHS_  
*/ +B4i,]lCx  
private int partition(int[] data, int l, int r,int pivot) { UFeQ%oRa8  
do{ R_#k^P^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m [BV{25  
SortUtil.swap(data,l,r); kMg[YQ]OC  
} dDl_Pyg4K  
while(l SortUtil.swap(data,l,r); >skl-f  
return l; _;:B@Z  
} |j4;XaG)  
5E2T*EXSh  
} Qi|k,1A0  
LqS_%6^  
改进后的快速排序: ~2QD.(  
EH]qYF.  
package org.rut.util.algorithm.support; IC-W[~  
x'V:qv*O  
import org.rut.util.algorithm.SortUtil; ][>-r&V  
L"( {6H  
/** ZJHaY09N  
* @author treeroot v5*JBW+c*  
* @since 2006-2-2 2D"aAI<P  
* @version 1.0 8>(/:u_x  
*/ A9LVS&52  
public class ImprovedQuickSort implements SortUtil.Sort { mh#_lbe'  
au/5`  
private static int MAX_STACK_SIZE=4096; 'Ge8l%p  
private static int THRESHOLD=10; SI7r `'7A'  
/* (non-Javadoc) H2CpZK'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l@>@2CB  
*/ / &yc?Ui  
public void sort(int[] data) { 8 LsJ}c  
int[] stack=new int[MAX_STACK_SIZE]; OOzXA%<%c  
BKu< p<  
int top=-1; ~P"o_b6,k  
int pivot; l2kUa'O-  
int pivotIndex,l,r; 5PE}3he:  
u3IhB8'  
stack[++top]=0; "nU] 2  
stack[++top]=data.length-1; P-X2A2  
^N O4T  
while(top>0){ 2W;2._  
int j=stack[top--]; c=p!2jJ1K~  
int i=stack[top--]; Kae-Y  
\ F)}brPc  
pivotIndex=(i+j)/2; P3TM5  
pivot=data[pivotIndex]; LmPpt3[  
)&ucX  
SortUtil.swap(data,pivotIndex,j); H_w?+Rig  
ZN!<!"~  
file://partition {}BAQ9|q  
l=i-1; S4 s#EDs  
r=j; </_.+c [  
do{ 0Q[;{}W}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }`]Et99Q5  
SortUtil.swap(data,l,r); lDZ~  
} l _zTpyOZ  
while(l SortUtil.swap(data,l,r); BVS SO's  
SortUtil.swap(data,l,j); >txeo17Ba\  
5e&;f  
if((l-i)>THRESHOLD){ %.;;itB  
stack[++top]=i; ^t,haO4  
stack[++top]=l-1; V2$M`|E  
} 2h1P!4W85  
if((j-l)>THRESHOLD){ YAd%d|Q  
stack[++top]=l+1; "lL/OmG  
stack[++top]=j; rW`l1yi*$  
} Xi!e=5&Pa  
~Sx\>wBlc  
} 6ck%M#v  
file://new InsertSort().sort(data); 6u{%jSA>D\  
insertSort(data); ]6,D 9^{;  
} i$CF*%+t  
/** mcxD#+H 3  
* @param data rv2;)3/*  
*/ Nwk^r75lq  
private void insertSort(int[] data) { =:\5*  
int temp; SA?1*dw)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]N:Wt2  
} E|W7IgS  
} Us% _'}(/U  
} ?h,.1Tb  
KIY9?B=+  
} o 9d|XY_  
~iq=J5IN#  
归并排序: X#o;`QM  
_.SpU`>/f  
package org.rut.util.algorithm.support; [<nd+3E  
)-25?B  
import org.rut.util.algorithm.SortUtil; `tl-] ^Y2  
6Y9<| .  
/** M*aYcIU((  
* @author treeroot w^}* <q\  
* @since 2006-2-2 7yOBxb   
* @version 1.0 @)@tIhw  
*/ ){KrBaGa4  
public class MergeSort implements SortUtil.Sort{ tMyMA}`  
}$s QmR R  
/* (non-Javadoc) gZ=$bR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R#s_pW{op  
*/  lHE+o;-  
public void sort(int[] data) { [C@ Ro,mI  
int[] temp=new int[data.length]; 3V<c4'O\W  
mergeSort(data,temp,0,data.length-1); 2m9qg-W  
} V OT9cP^6  
/buj(/q^#  
private void mergeSort(int[] data,int[] temp,int l,int r){ nPH\Lra  
int mid=(l+r)/2; t<%+))b  
if(l==r) return ; !(y(6u#  
mergeSort(data,temp,l,mid); Bf" ZmG9  
mergeSort(data,temp,mid+1,r); SBY0L.  
for(int i=l;i<=r;i++){ ^!x qOp!  
temp=data; n%!50E6*:  
} %1)JRc  
int i1=l; T#HF! GH]  
int i2=mid+1; Fzz9BEw(i  
for(int cur=l;cur<=r;cur++){ ^MVOaV65  
if(i1==mid+1) S`vw<u4t  
data[cur]=temp[i2++]; z2q!_ ~  
else if(i2>r) ?\zyeWK0L  
data[cur]=temp[i1++]; AG"iS<u  
else if(temp[i1] data[cur]=temp[i1++]; r>G||/Z  
else }TDq7-(g  
data[cur]=temp[i2++]; bnV)f<  
} 2FGCf} ,  
} tZ:fOM  
1 /SB[[g  
} y8]vl;88yY  
EW/NH&{  
改进后的归并排序: m~F ~9&  
!"'@c  
package org.rut.util.algorithm.support; >"Zn# FY  
ozA%u,\7k  
import org.rut.util.algorithm.SortUtil; !ED,'d%J  
4+4&}8FH  
/** ]Nue1xV_  
* @author treeroot nyOvB#f  
* @since 2006-2-2 UN:cRH{?*  
* @version 1.0 zoj w^%W  
*/ _V` QvnT}  
public class ImprovedMergeSort implements SortUtil.Sort { T%**:@}+  
fLV@~T|  
private static final int THRESHOLD = 10; x(rl|o  
.L ^F4  
/* s+v$sF  
* (non-Javadoc) Z-aB[hE  
* pWKI^S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,fj~BkW{  
*/ Vb?_RE_H  
public void sort(int[] data) { ppO!v?  
int[] temp=new int[data.length]; ,|w,  
mergeSort(data,temp,0,data.length-1); Wr,pm#gl6  
} Qk&6Z%  
t<cWMx5ra  
private void mergeSort(int[] data, int[] temp, int l, int r) { j0S[JpoF  
int i, j, k; 7Q aZ|\c  
int mid = (l + r) / 2; 1c`Yn:H^  
if (l == r) Ua+Us"M3}  
return; v&`n}lS  
if ((mid - l) >= THRESHOLD) ^{-Z3Yxd  
mergeSort(data, temp, l, mid); &p=(0$0&-  
else +lJD7=%K]Z  
insertSort(data, l, mid - l + 1); DMT2~mh  
if ((r - mid) > THRESHOLD) 5 gwEr170  
mergeSort(data, temp, mid + 1, r); u<HJFGLzI  
else [LSs|f  
insertSort(data, mid + 1, r - mid); qtp-w\#S$  
C(}Kfi@6N  
for (i = l; i <= mid; i++) { n'@XgUI,  
temp = data; Ky{C;7X  
} ~P9^4  
for (j = 1; j <= r - mid; j++) { x8&~  
temp[r - j + 1] = data[j + mid]; C3; d.KlV  
} R#/0}+-M  
int a = temp[l]; Qa1G0qMEIF  
int b = temp[r]; Vje LPbk)  
for (i = l, j = r, k = l; k <= r; k++) { &l W~ot1,  
if (a < b) { D*8oFJub  
data[k] = temp[i++]; ;(LC{jY  
a = temp; lV?OYS|4i  
} else {  "-G&]YMl  
data[k] = temp[j--]; Tg v]30F)  
b = temp[j]; wA6<Buj D  
} weIlWxy  
} )lVplAhZD  
} smX&B,&@  
7] 17?s]t,  
/** |l,0bkY@&  
* @param data wE_#b\$=b  
* @param l 9bD ER  
* @param i |LE*R@|3$  
*/ ^2mCF  
private void insertSort(int[] data, int start, int len) { hle@= e/n  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %UCuI9  
} !r+SE  
} 3L;&MG=  
} *)i+c{~  
} Yk5Cyq  
tEllkHyef  
堆排序: ~Yl%{1  
3 yM!BTlX  
package org.rut.util.algorithm.support; xx,|n  
yzz(<s:o/  
import org.rut.util.algorithm.SortUtil; Yn-;+ 4 K  
lLuAgds`  
/** AO0aOX8_+D  
* @author treeroot .T7S1C $HP  
* @since 2006-2-2 !,;/JxfgVh  
* @version 1.0 FdmoR;  
*/ (%|L23  
public class HeapSort implements SortUtil.Sort{ B6]M\4v  
YXTd^M~@D  
/* (non-Javadoc) (k>I!Z/&2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mV'^4by  
*/ #jX%nqMxW  
public void sort(int[] data) { ~@EBW3>~5  
MaxHeap h=new MaxHeap(); ?L6ACi`9  
h.init(data); nV?e(}D  
for(int i=0;i h.remove(); $4]"g}_  
System.arraycopy(h.queue,1,data,0,data.length); W$?Bsz)  
} l|~SVk|  
W8s/"  
private static class MaxHeap{ 2W=am_\0e.  
o`ijdg!5qG  
void init(int[] data){ g+92}$_  
this.queue=new int[data.length+1]; J l9w/T  
for(int i=0;i queue[++size]=data; )x&OdFX  
fixUp(size); e=EM07z  
}  9/R<,  
} @1G`d53N  
rJ_fg$.<  
private int size=0; O=w u0n  
[[9XqD]  
private int[] queue; _.$g?E/(  
,[0rh%%j  
public int get() { 'Gds?o8  
return queue[1]; s9}VnNr  
} 1r;.r|  
vaUUesytt  
public void remove() { i2+vUl|;Z  
SortUtil.swap(queue,1,size--); Mny mV;y"  
fixDown(1); yW)X asn  
} 4GTB82V$  
file://fixdown / qo`vk A  
private void fixDown(int k) { S) [$F}  
int j; \Z%V)ZRi=  
while ((j = k << 1) <= size) { p(]o#$ 6[  
if (j < size %26amp;%26amp; queue[j] j++;  h2]gA_T`  
if (queue[k]>queue[j]) file://不用交换 $+.!(Js"K  
break; {QRrAi  
SortUtil.swap(queue,j,k); l\{{iAC]I  
k = j; KF4}cM=.5  
} 6t(I.>-  
} O*zF` 9  
private void fixUp(int k) { *ioVLt,:R  
while (k > 1) { F-2&P:sjQ  
int j = k >> 1; z?i{2Fz6  
if (queue[j]>queue[k]) m6=Jp<  
break; ~)&im.Q4  
SortUtil.swap(queue,j,k); K<Qy1y~[  
k = j; C7lBK<gQ  
} 4?)-;Hx_X  
} ($ l t@j  
QL4BD93v  
} =-U8^e_Y  
t*'U|K4L/  
} ~)\E&c  
k^Q>  
SortUtil: EsR$H2"  
~9KxvQzt  
package org.rut.util.algorithm; j\S}TaH0e  
+`)4jx)r/  
import org.rut.util.algorithm.support.BubbleSort; [C"[#7  
import org.rut.util.algorithm.support.HeapSort; (ug^2WG Yq  
import org.rut.util.algorithm.support.ImprovedMergeSort; >X"V  
import org.rut.util.algorithm.support.ImprovedQuickSort; U1wsCH3+n  
import org.rut.util.algorithm.support.InsertSort; O~WT$  
import org.rut.util.algorithm.support.MergeSort; #I(Ho:b  
import org.rut.util.algorithm.support.QuickSort; O$Z<R:vVA  
import org.rut.util.algorithm.support.SelectionSort; yxt `  
import org.rut.util.algorithm.support.ShellSort; BCK0fk~  
_PR> <L_  
/** OAhCW*B  
* @author treeroot @a{1vT9b  
* @since 2006-2-2 7sci&!.2`  
* @version 1.0 hD5G\TR.  
*/ ,ruL7|T&  
public class SortUtil { C/{tvY /o  
public final static int INSERT = 1; jml 4YaGZ  
public final static int BUBBLE = 2; e+t2F |xDh  
public final static int SELECTION = 3; g}\Yl.  
public final static int SHELL = 4; e(NpX_8  
public final static int QUICK = 5; xxN=,p  
public final static int IMPROVED_QUICK = 6; 8=#J:LeXj  
public final static int MERGE = 7; C/w!Y)nB=  
public final static int IMPROVED_MERGE = 8; 7fg +WZ  
public final static int HEAP = 9; FB-_a  
wSMP^kG  
public static void sort(int[] data) { c9 UJ=  
sort(data, IMPROVED_QUICK); C)r!;u)AZH  
} +Xg]@IS-eg  
private static String[] name={ Gg3cY{7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?1z." &  
}; Y GZX}-  
zMUifMiAj  
private static Sort[] impl=new Sort[]{ JY|f zL  
new InsertSort(), JDyP..Dt  
new BubbleSort(), nzdJ*C  
new SelectionSort(), 0pSqk/  
new ShellSort(), )4hb%U  
new QuickSort(), xt%-<%s%f  
new ImprovedQuickSort(), 0t-!6  
new MergeSort(), o0nKgq'w|x  
new ImprovedMergeSort(), ?~;8Y=O  
new HeapSort() >^8=_i !  
}; yJ(p-3O5  
i U^tv_1  
public static String toString(int algorithm){ `@acQs;0  
return name[algorithm-1]; _oB!-#  
} ov{  
ZR~ *Yofy  
public static void sort(int[] data, int algorithm) { OIuEC7XM^C  
impl[algorithm-1].sort(data); h|_E>6d)  
} 0$-N  
M>pcG.6V  
public static interface Sort { Xgge_`T9  
public void sort(int[] data); &uh|! lD  
} Ix;9D'^}  
>i>%@  
public static void swap(int[] data, int i, int j) { !+;'kI2  
int temp = data; H5f>Q0jq  
data = data[j]; .e $W(}  
data[j] = temp; 6gLk?^.  
} v'"0Ya  
} O<&8 gk~  
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