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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。 @*c ) s_  
插入排序: 6Pa jBEF  
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package org.rut.util.algorithm.support; \;A\ vQ[  
D0&{iZ(  
import org.rut.util.algorithm.SortUtil; J ;wA  
/** a JDu_  
* @author treeroot ico(4KSk  
* @since 2006-2-2 xQhvs=Zm]  
* @version 1.0 S&P5##.u`  
*/ PF(P"f.?D  
public class InsertSort implements SortUtil.Sort{ o^! Zt 9  
=>CrZ23B "  
/* (non-Javadoc) h D/b O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~U~4QQV  
*/ ?%HtPm2< %  
public void sort(int[] data) { W$Bx?}x($  
int temp; "zO+!h'o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _dEf@==  
} 9D_4]'KG  
} 2aN  
} S-h1p`  
+:d))r=n  
} G?/1 F1  
VMW ?[j  
冒泡排序: mYk5f_}  
4>^ %_Xj[  
package org.rut.util.algorithm.support; n.y72-&v  
AsM""x1Ix  
import org.rut.util.algorithm.SortUtil; hGF(E*  
sh?Dxodp9  
/** N3H!ptn37  
* @author treeroot x9HA^Rj4-  
* @since 2006-2-2 b`K~l'8  
* @version 1.0 T+2I:W%  
*/ ~4*9w3t   
public class BubbleSort implements SortUtil.Sort{ [M2,bc8SJV  
p$@=N6)I.k  
/* (non-Javadoc) f|FQd3o)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _wf"E(c3D  
*/ /7h%sCX  
public void sort(int[] data) { |P2GL3NR  
int temp; nZN]Q9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k>n^QHM  
if(data[j] SortUtil.swap(data,j,j-1); =k`(!r2"#  
} $(}kau  
} DD'<zL[  
} (w% hz']  
} c uquA ~  
vVLR9"rHM  
} mI in'M  
s$:]$&5  
选择排序: ~%Yh`c EP  
Z[`J'}?|  
package org.rut.util.algorithm.support; BoIe<{X(9  
7XWgY%G  
import org.rut.util.algorithm.SortUtil; uW[s?  
{M E|7TS=  
/** miHW1h[=  
* @author treeroot VkhK2  
* @since 2006-2-2 [;5HI'px  
* @version 1.0 qg6Hk:^r  
*/ M7,|+W/RK  
public class SelectionSort implements SortUtil.Sort { +U%lWE%  
=GM!M@~,Ab  
/* HA"dw2 |  
* (non-Javadoc) ZLKS4  
* <WBGPzVZE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K{>O. 5  
*/ ^"+cJ)  
public void sort(int[] data) { #8|;Q`Or:  
int temp; rT}d<c Sf  
for (int i = 0; i < data.length; i++) { o`j%$K4?5  
int lowIndex = i; (DK pJCx  
for (int j = data.length - 1; j > i; j--) { J(/ eR,ak  
if (data[j] < data[lowIndex]) { on&N=TN  
lowIndex = j; 2#W%--  
} )vGRfFjw_  
} Qn%*kU0X  
SortUtil.swap(data,i,lowIndex); 5I(` s#O  
} ;N"XW=F4e  
} S%xGXmZ  
[TO:- 8$.  
} 3y 3 U`Mo  
~T4 =Id  
Shell排序: x5`q)!<&  
JG}U,{7(  
package org.rut.util.algorithm.support; /e{Oqhf[n  
( v ~/glf  
import org.rut.util.algorithm.SortUtil; 4N` MY8',  
#2HygS  
/** tg8VFH2q.z  
* @author treeroot 1NOz $fW  
* @since 2006-2-2 [sNn^x  
* @version 1.0 S-f3rL[?  
*/ }.b[az\T  
public class ShellSort implements SortUtil.Sort{ |+`hSA  
W+K=M*^D;c  
/* (non-Javadoc) [sKdIw_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #{ Uk4  
*/ Q}fAAZ&7h  
public void sort(int[] data) { rX{|]M":T  
for(int i=data.length/2;i>2;i/=2){ =h_4TpDQ  
for(int j=0;j insertSort(data,j,i); ^*{ xTB57  
} @#Xzk?+  
} 3UN Jj&-`  
insertSort(data,0,1); !&'xkw`  
} b$Uwj<v  
%W&=]&L  
/** A&t'uY6  
* @param data ?ST}0F00}  
* @param j [#R%jLEJ2  
* @param i q75F^AvH  
*/ 09%eaoW  
private void insertSort(int[] data, int start, int inc) { p6HZ2Q:a  
int temp; ?pF;{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e&0B4wVAQ  
} zw5~|<  
} y6PAXvv'{  
} o$-8V:)6d  
dU&.gFw1  
} >$Fc=~;Ba  
H`Z4a N  
快速排序: #!`zU4&2  
l5h9Eq  
package org.rut.util.algorithm.support; s)M2Z3>+  
J<`RlDI  
import org.rut.util.algorithm.SortUtil; 5W{>5.Arx)  
~y|%D;  
/** wyc,Ir  
* @author treeroot ~AE034_N  
* @since 2006-2-2 %MjPQ  
* @version 1.0 yh0|f94m  
*/ =V,'f  
public class QuickSort implements SortUtil.Sort{ @`_j't,  
N0qC/da1  
/* (non-Javadoc) U/iAP W4U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3x=F  
*/ M5x!84  
public void sort(int[] data) { c~tSt.^WX  
quickSort(data,0,data.length-1); _N-7H\hF  
} =6W:O  
private void quickSort(int[] data,int i,int j){ Zgg7pL)#c  
int pivotIndex=(i+j)/2; @Op8^8$`  
file://swap l =_@<p  
SortUtil.swap(data,pivotIndex,j); 0zTv'L  
no/]Me!j=  
int k=partition(data,i-1,j,data[j]); \iL,l87  
SortUtil.swap(data,k,j); ~F(+uJbO  
if((k-i)>1) quickSort(data,i,k-1); RV$+g.4  
if((j-k)>1) quickSort(data,k+1,j); "FXS;Jf  
v =?V{"wk!  
} FI/YJ@21  
/** eY(usK  
* @param data U1"t|KW8  
* @param i @B'Mu:|f  
* @param j V!opnLatYS  
* @return -DuiK:mp  
*/ KqSa"76R  
private int partition(int[] data, int l, int r,int pivot) { P5d@-l%}  
do{ $@Ay0GEI"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `-/l$A} U  
SortUtil.swap(data,l,r); (jm.vL&5j  
} 1tr>D:c\  
while(l SortUtil.swap(data,l,r); SQ Fey~  
return l; A5`7o9  
} <eh(~  
!:n),sFv45  
} 8;!Eqyt  
U.)G #B  
改进后的快速排序: !}P FiT^  
NSgHO`gU8  
package org.rut.util.algorithm.support; ( Lu.^  
t!T}Pg(Bo  
import org.rut.util.algorithm.SortUtil; F889JSZ%  
I| j tpv}  
/** R^2Uh$kk{A  
* @author treeroot (O-)uC  
* @since 2006-2-2 ~c="<xBE  
* @version 1.0 2 Lam vf  
*/ .3U[@*b(  
public class ImprovedQuickSort implements SortUtil.Sort { |O)deiJRy  
%'t~e?d!  
private static int MAX_STACK_SIZE=4096; XF7W'^  
private static int THRESHOLD=10; :HE]P)wz-  
/* (non-Javadoc) .#:,j1L"53  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L~oFW'  
*/ 8@fDn(]w  
public void sort(int[] data) {  hY1|qp  
int[] stack=new int[MAX_STACK_SIZE]; `Of wl%G  
>#:/ GN?  
int top=-1; PD}R7[".>  
int pivot; _RW[]MN3*  
int pivotIndex,l,r; %)/f; T6  
).]m@g:ew  
stack[++top]=0; Hr+-ndH!Pq  
stack[++top]=data.length-1; VBX# !K1Q  
r$#G%FMv  
while(top>0){ [[ e| GQ  
int j=stack[top--]; 3opLLf_g  
int i=stack[top--]; -/-6Td1JY>  
// }8HY)>  
pivotIndex=(i+j)/2; w}Upa(dU  
pivot=data[pivotIndex]; =_'cG:=)  
R2$U K  
SortUtil.swap(data,pivotIndex,j); Vf?#W,5>=  
yo*iv+l  
file://partition /,Rca1W  
l=i-1; }K>H S\e  
r=j; ~t:b<'/  
do{ Qsntf.fT  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j&/.[?K  
SortUtil.swap(data,l,r); 99!{[gOv  
} 3] qlz?5  
while(l SortUtil.swap(data,l,r); '!-?  
SortUtil.swap(data,l,j); fl"y@;;#h  
B\ _u${C  
if((l-i)>THRESHOLD){ ~& 5&s  
stack[++top]=i; \u]CD}/  
stack[++top]=l-1; lkfFAwnc  
} gx*rSS?=N  
if((j-l)>THRESHOLD){ <!9fJFE  
stack[++top]=l+1; vs1Sh?O  
stack[++top]=j; s3-ktZ@  
} N}Ks[2  
}iSakq'  
} ,w%oSlOu  
file://new InsertSort().sort(data); z9ShP&^4[  
insertSort(data); eU koVr   
} JQ_gM._3  
/** KupMndK  
* @param data CjQ"oQw  
*/ Ys$YI{  
private void insertSort(int[] data) { v1C.\fL  
int temp; n r>{ uTa  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @LKG\zYBu  
} H\I!J@6g  
}  <8)s  
} RW 7oL:$dt  
c[ ony:6  
} $a^isd4  
qd+[ShrhqZ  
归并排序: ,Us2UEWNv  
>J}n@MZ  
package org.rut.util.algorithm.support; -(w~LT$ "  
zw: C*sY  
import org.rut.util.algorithm.SortUtil; 2 1~7{#  
b%;59^4AjD  
/** L)lQ&z?  
* @author treeroot }[z<iij4  
* @since 2006-2-2 V->%)d3i  
* @version 1.0 b!]0mXU  
*/ s$Zq/l$1x  
public class MergeSort implements SortUtil.Sort{ % kx ^/DH  
!&`\ LJ=j  
/* (non-Javadoc) fhV0S>*<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z8[H:W#G  
*/ <{/;1Dru  
public void sort(int[] data) { `.'i V[fr  
int[] temp=new int[data.length]; lV<Tsk'  
mergeSort(data,temp,0,data.length-1); 20VVOnDY  
} yIIETE  
oM<!I0"gC+  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3fxNV<  
int mid=(l+r)/2; _E6} XNS  
if(l==r) return ; Yu^H*b  
mergeSort(data,temp,l,mid); ufCqvv>'  
mergeSort(data,temp,mid+1,r); p08kZ  
for(int i=l;i<=r;i++){ ^%8qKC`Tt  
temp=data; y-#  
} xb>n&ym?  
int i1=l; NaA+/:  
int i2=mid+1; 0[lsoYUq  
for(int cur=l;cur<=r;cur++){  gt_X AH  
if(i1==mid+1) :wU_-{>>2  
data[cur]=temp[i2++]; *v rW A  
else if(i2>r) !\0F.*   
data[cur]=temp[i1++]; VD24X  
else if(temp[i1] data[cur]=temp[i1++]; G*\abL  
else xHB/]Vd-  
data[cur]=temp[i2++]; 8PBU~mr  
} |rFR8srPG  
} -2\ZzK0tM  
5r4gmy>  
} gcg>Gjp  
i_u {5 U;  
改进后的归并排序: e3eVvl5]  
mF'-Is  
package org.rut.util.algorithm.support; $(gGoL<  
fpvvV(  
import org.rut.util.algorithm.SortUtil; Ad;S=h8:  
|mxNUo-  
/** S<nP80C  
* @author treeroot .G}k/`a  
* @since 2006-2-2 w< 65S  
* @version 1.0 PW%1xHLfk  
*/ 5g``30:o  
public class ImprovedMergeSort implements SortUtil.Sort { WRD A `  
[5Fd P0  
private static final int THRESHOLD = 10; >?5xDbRj  
Sty! atEWT  
/* jJ a V  
* (non-Javadoc) *bA+]&dj\  
* u#+RUtM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 g Bjxqm  
*/ ?MC(}dF0  
public void sort(int[] data) { Xsd $*F@<  
int[] temp=new int[data.length]; JI"/N`-?;b  
mergeSort(data,temp,0,data.length-1); r<*O  
} l"J*)P  
\sK:W|yy  
private void mergeSort(int[] data, int[] temp, int l, int r) { wE$s'e  
int i, j, k; U:]MgZWn  
int mid = (l + r) / 2; AkrTfi4hC  
if (l == r) c>ad0xce6  
return; 1")FWN_K/T  
if ((mid - l) >= THRESHOLD) p9-0?(]  
mergeSort(data, temp, l, mid); M8';%  =@  
else G#H9g PY  
insertSort(data, l, mid - l + 1); !4R>O6k   
if ((r - mid) > THRESHOLD) 74K)aA  
mergeSort(data, temp, mid + 1, r); X JY5@I.  
else ^qxdmMp)l  
insertSort(data, mid + 1, r - mid); *hVb5CS  
BeK2;[5C  
for (i = l; i <= mid; i++) { Ge~q3"  
temp = data; k-"<{V  
} ]9jZndgC  
for (j = 1; j <= r - mid; j++) { __!m*!sd  
temp[r - j + 1] = data[j + mid]; E4+b-?PB~  
} $$JIBf8  
int a = temp[l]; ll^DY hx}  
int b = temp[r]; 4`nqAX~'f  
for (i = l, j = r, k = l; k <= r; k++) { ?6i;)eIOI  
if (a < b) { 3AURzU  
data[k] = temp[i++]; {6'*Phw  
a = temp; W`$[j0  
} else { <cYp~e%xIw  
data[k] = temp[j--]; &hayR_F9  
b = temp[j]; cd!|Ne>fe  
} W57&\PXYn  
} kMy<G8 s  
} 2H[ ; v+  
{Eu'v$c!  
/** FV A UR  
* @param data IX9K.f  
* @param l 0[/vQ+O]2  
* @param i -kl;!:'.3  
*/ 14  H'!$  
private void insertSort(int[] data, int start, int len) { 3gpo %  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); c45tmul  
} sAi&A9"*   
} `(!NYx  
} j 1(T )T  
} *>k!hq;j  
$A`xhh[  
堆排序: !.EcP=S  
)1f+ld%R  
package org.rut.util.algorithm.support; o(qEkR:4kd  
c3] C:t+  
import org.rut.util.algorithm.SortUtil; XLm@etf  
I}+;ME|<2  
/** $jG4pPG  
* @author treeroot :#{-RU@PS  
* @since 2006-2-2 (/K5!qh  
* @version 1.0 D`Gt  
*/ ^agj4$  
public class HeapSort implements SortUtil.Sort{ H`-=?t  
5`~mqqR5  
/* (non-Javadoc) vZ@g@zB4o0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |3;(~a)%  
*/ Ky kSFB  
public void sort(int[] data) { D{p5/#|r  
MaxHeap h=new MaxHeap(); dQ9 ah  
h.init(data); KCUU#t|8V\  
for(int i=0;i h.remove(); rB%y6P B  
System.arraycopy(h.queue,1,data,0,data.length); |SQ|qbe=  
} )11W)G`w  
QR"bYQ  
private static class MaxHeap{ 6NX3"i0 eT  
_ h9o@  
void init(int[] data){ b`CWp;6Y  
this.queue=new int[data.length+1]; ; 0ko@ \Lq  
for(int i=0;i queue[++size]=data; %/T7Z; d  
fixUp(size); ^s{hs(8%R  
} :p>hW!~  
} Ma6W@S  
ZenPw1-  
private int size=0; S`iR9{+&  
!>n|c$=;qk  
private int[] queue; #Fs|f3-@  
"MnSJ 2  
public int get() { YT=eVg53  
return queue[1]; & Kmy}q  
} aMTFW_w  
^Kqf ~yS%  
public void remove() { Au.:OeJm  
SortUtil.swap(queue,1,size--); eA=WGy@IcN  
fixDown(1); YEv Lhh  
} k_aW  
file://fixdown DM),|Nq"  
private void fixDown(int k) { {.CMD9F[  
int j; Ei5wel6!  
while ((j = k << 1) <= size) { i#W*'   
if (j < size %26amp;%26amp; queue[j] j++; 5HKW"=5Cf  
if (queue[k]>queue[j]) file://不用交换 [2 zt ^  
break; 8IGt4UF&?  
SortUtil.swap(queue,j,k); _1|$P|$P.  
k = j; *1^$.Q&  
} -M4p\6)Ge  
} ``|AgIg  
private void fixUp(int k) { dE5D3ze  
while (k > 1) { >xg5z  
int j = k >> 1; uzBz}<M=  
if (queue[j]>queue[k]) #NNewzC<*  
break; NfzF.{nh  
SortUtil.swap(queue,j,k); =o^|bih  
k = j; WeMAe w/d  
} R7?29?$7  
} A:# k  
DBsDk kB{  
} gfy19c 9  
j6g@tx^)'  
}  8=;k"  
'bu)M1OLi  
SortUtil: >t  <pFh  
OP! R[27>  
package org.rut.util.algorithm; t'1Y@e  
YF[f Z  
import org.rut.util.algorithm.support.BubbleSort; p &(OZJT  
import org.rut.util.algorithm.support.HeapSort; N|:'XwL  
import org.rut.util.algorithm.support.ImprovedMergeSort; H?`g!cX  
import org.rut.util.algorithm.support.ImprovedQuickSort; k<j"~S1  
import org.rut.util.algorithm.support.InsertSort; x,8<tSW)Z  
import org.rut.util.algorithm.support.MergeSort; ;inzyFbL=  
import org.rut.util.algorithm.support.QuickSort; p_2pU)%  
import org.rut.util.algorithm.support.SelectionSort; DWiBG  
import org.rut.util.algorithm.support.ShellSort; L":bI&V?:  
_P7tnXww  
/** 1S:|3W  
* @author treeroot CN&  
* @since 2006-2-2 *>q/WLR  
* @version 1.0 sZhM a>  
*/ 'Ot,H_pE  
public class SortUtil { a|_p,_  
public final static int INSERT = 1; 9YN?  
public final static int BUBBLE = 2; @jy41eIo  
public final static int SELECTION = 3; K#mOSY;}  
public final static int SHELL = 4; \7v)iG|#G&  
public final static int QUICK = 5; QM<y`cZ8  
public final static int IMPROVED_QUICK = 6; .Y*f2A.v  
public final static int MERGE = 7; aP-<4uGx  
public final static int IMPROVED_MERGE = 8; S* R,FKg  
public final static int HEAP = 9; 7 s Fz?` -  
y$W|~ H   
public static void sort(int[] data) { G"dS+,Q  
sort(data, IMPROVED_QUICK); r[txlQI9  
} GK*v{`  
private static String[] name={ {+.r5py  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |L6&Gf]#5  
}; S:bC[}  
aelO3'UN  
private static Sort[] impl=new Sort[]{ _5Bcwa/  
new InsertSort(), &^".2)zU  
new BubbleSort(), ,*svtw:2')  
new SelectionSort(), !Ng=Yk>3  
new ShellSort(), ~P*4V]L^  
new QuickSort(), /t%u"dP"T~  
new ImprovedQuickSort(), O9M{  ).  
new MergeSort(), 0s#Kp49-  
new ImprovedMergeSort(), s5&@Cxzl  
new HeapSort() `~BZ1)@  
}; ,e722wz  
NH A5e<  
public static String toString(int algorithm){ b1#dz]  
return name[algorithm-1]; e [h8}F  
} 1bnBji  
c=O,;lWFqm  
public static void sort(int[] data, int algorithm) { w'Tq3-%V  
impl[algorithm-1].sort(data); -~{c u47_  
} g" VMeW^  
dl-l"9~;  
public static interface Sort { b7`D|7D  
public void sort(int[] data); u{<"NR h  
} d3Mva,bw<  
G3i !PwW  
public static void swap(int[] data, int i, int j) { =+:{P?*}  
int temp = data; :mppv8bh  
data = data[j]; -Z-f1.Dm5  
data[j] = temp; )u%je~Vw  
} ~&dyRt W4  
} feM6K!fL`  
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