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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。 4 $R!)  
插入排序: p8,=K<  
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package org.rut.util.algorithm.support; L$=R/l  
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import org.rut.util.algorithm.SortUtil; >n,_Aj c  
/** Q+1ot,R  
* @author treeroot %<kfW&_>w  
* @since 2006-2-2 {jD?obs  
* @version 1.0 LGL;3EI  
*/ tz]0F5  
public class InsertSort implements SortUtil.Sort{ &m--}  
()6% 1zCO  
/* (non-Javadoc) A'w+Lc.2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <qR$ `mLN  
*/ :Ak^M~6a5  
public void sort(int[] data) { :P q&l.  
int temp; c^=q(V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8 o}5QOW  
} =\]gL%N-|  
} w5z]=dN  
} mRx `G(u:v  
b_Y+XXb<  
} 9SeGkwec?$  
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冒泡排序: c&T5C, ]  
DAq H  
package org.rut.util.algorithm.support; #N`'hPD}  
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import org.rut.util.algorithm.SortUtil; ;d<XcpK}  
*{?2M6Z  
/** N d>zq  
* @author treeroot 4AhF E@  
* @since 2006-2-2 aKMX-?%t4  
* @version 1.0 v Z10Rb8  
*/ Fe[6Y<x+:  
public class BubbleSort implements SortUtil.Sort{ sA6HkB.  
?e-rwaW  
/* (non-Javadoc) SsX$l<t*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _,^f,WO~  
*/ F-@y H  
public void sort(int[] data) { xLIyh7$t  
int temp; u|23M,  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8!v|`Ky  
if(data[j] SortUtil.swap(data,j,j-1); `x=kb;  
} DQhHU1  
} ,;6%s>Cvd(  
} m@nGXl'!  
} fyUW;dj  
qF3S\ C  
} gS(JgN  
_$*-?*V&  
选择排序: 'tTlBf7#  
Db2#QQ  
package org.rut.util.algorithm.support; ?Ho$fGz  
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import org.rut.util.algorithm.SortUtil; h`fZ 8|yw  
"Io-%S u+  
/** NTJ,U2  
* @author treeroot  ~@@t-QY  
* @since 2006-2-2 F@/syX;bb5  
* @version 1.0 TJ>YJ D  
*/ kk126?V]_  
public class SelectionSort implements SortUtil.Sort { w32F?78]  
AkjoD7.*  
/* h1>.w pr  
* (non-Javadoc) ,=!s;+lu{  
* ZHen:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zX=%BL?  
*/ :8n?G  
public void sort(int[] data) { )FB<gCh7X  
int temp; :x q^T  
for (int i = 0; i < data.length; i++) { 9^S rOW6~  
int lowIndex = i; W(ZEqH2  
for (int j = data.length - 1; j > i; j--) { pnz@;+f  
if (data[j] < data[lowIndex]) { #O^zA`D   
lowIndex = j; .f!'> _  
} MS SHMR  
} Qvny$sr2  
SortUtil.swap(data,i,lowIndex); hW,GsJ,  
} \^F6)COy  
} dd=5`Bo9Yh  
]Gl_L7u`  
} ^R\5'9K!  
e /XOmv  
Shell排序: Kc9)Lzu+  
o\j<EQb.  
package org.rut.util.algorithm.support; *=z.H  *  
|q o3 E  
import org.rut.util.algorithm.SortUtil; hQSJt[8My  
5}N O~Xd<  
/** Cyv_(Oh?dv  
* @author treeroot 'iYaA-9j  
* @since 2006-2-2 uJ*|SSN~  
* @version 1.0 YVY(uq)d  
*/ !oV'  
public class ShellSort implements SortUtil.Sort{ LY0/\Z"N  
etW-gbr  
/* (non-Javadoc) /C<} :R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jP @t!=  
*/ Rx<[bohio  
public void sort(int[] data) { $AFiPH9  
for(int i=data.length/2;i>2;i/=2){ e ]>{?Z  
for(int j=0;j insertSort(data,j,i); u*;53 43  
} *7Sg8\wDn  
} gp'n'K]  
insertSort(data,0,1); gvZLW!={  
} Us9$,(3  
,@gDY9Q3r/  
/** .>zkS*oX4z  
* @param data 4ri)%dl1  
* @param j 9]8M {L  
* @param i WY~}sE  
*/ yC=vTzzp  
private void insertSort(int[] data, int start, int inc) { ~?A,GalS  
int temp; = &aD!nTx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }\ui} \  
} ~w%Z Bp  
} Z42v@?R.!W  
} Z@iMG  
%@M/)"k  
} : [vp.vw}/  
h$zPQ""8  
快速排序:  K[TMTn  
-p !KsU  
package org.rut.util.algorithm.support; Tf[-8H<  
s.dn~|a  
import org.rut.util.algorithm.SortUtil; d0Kg,HB  
?t.?f`(|  
/** Hp> J,m(*  
* @author treeroot L{CHAVkV  
* @since 2006-2-2 zck |jhJ6  
* @version 1.0 f<'&_*7,|t  
*/ "/XS3s v"s  
public class QuickSort implements SortUtil.Sort{ e]X9"sd0=  
j'0*|f^z  
/* (non-Javadoc) /0YNB)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vDOeBw=  
*/ KF-gcRh  
public void sort(int[] data) { XY QUU0R  
quickSort(data,0,data.length-1); yM D* >8/  
} .y[K =p3  
private void quickSort(int[] data,int i,int j){ ?y45#Tk]  
int pivotIndex=(i+j)/2; LveqG   
file://swap !%M-w0vC9  
SortUtil.swap(data,pivotIndex,j); :U[_V4? 7  
|QgXSe7  
int k=partition(data,i-1,j,data[j]); ;%z0iZmg  
SortUtil.swap(data,k,j); R;V(D3  
if((k-i)>1) quickSort(data,i,k-1); 5BCaE)J  
if((j-k)>1) quickSort(data,k+1,j); 'Jl.fN  
~ pdf'  
} mg,f>(  
/** @x J^JcE  
* @param data !V-SV`+X  
* @param i &Y=NUDt_  
* @param j fR[!=-6^f  
* @return ujWHO$uz!  
*/ S@"=,Xj M  
private int partition(int[] data, int l, int r,int pivot) { K ;xW/7?  
do{ ta6 WZu  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;qk~>  
SortUtil.swap(data,l,r); w./EJk KI  
} c`}X2u]k  
while(l SortUtil.swap(data,l,r); zXf+ieo  
return l; O}f(h5!k  
} @ Q1jH~t  
A07 P$3>/W  
} +@qk=]3a  
B# H  
改进后的快速排序: IFTW,9hh  
YXg uw7%\  
package org.rut.util.algorithm.support; eB@i)w?@o  
=K>Z{% i  
import org.rut.util.algorithm.SortUtil; y?@Y\ b  
aC$g(>xFt  
/** B+DRe 8  
* @author treeroot 835Upj>  
* @since 2006-2-2 CGe'z  
* @version 1.0 p+7BsW.l  
*/ !^fJAtCN]  
public class ImprovedQuickSort implements SortUtil.Sort { \mu9ikZ<  
,] {NZ9  
private static int MAX_STACK_SIZE=4096; EXFxiw  
private static int THRESHOLD=10; yl ;'Ru:  
/* (non-Javadoc) ,"VQ 0Z1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eo_T .q  
*/ 2M#CJ&  
public void sort(int[] data) { Y)*lw  
int[] stack=new int[MAX_STACK_SIZE]; ZAH<!@qh  
U?lu@5 ^Z  
int top=-1; 8W[]#~77b  
int pivot; enzQ}^  
int pivotIndex,l,r; MHYf8HN  
2,;t%GB  
stack[++top]=0; $B?7u@>,  
stack[++top]=data.length-1; D5m\u$~V  
VfcQibm  
while(top>0){ uY~A0I5Z  
int j=stack[top--];  ck~xj0  
int i=stack[top--]; g&vEc1LNo  
bX(*f>G'  
pivotIndex=(i+j)/2; wqOhJYc  
pivot=data[pivotIndex]; C|zH {.H  
wf@2&vJ  
SortUtil.swap(data,pivotIndex,j); %Nn'p"  
e`Yns$x  
file://partition V$%K=[  
l=i-1; U.F65KaKF  
r=j; PK4UdT  
do{ NGY I%:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v+sbRuo8  
SortUtil.swap(data,l,r); r*wKYb  
} RGLA}|  
while(l SortUtil.swap(data,l,r); RHbp:Mlk  
SortUtil.swap(data,l,j); R*0F)M  
y#DQOY+@^#  
if((l-i)>THRESHOLD){ *]6dV '  
stack[++top]=i; NLGr=*dq  
stack[++top]=l-1; ^e,RM_.  
} i?/?{p$#a-  
if((j-l)>THRESHOLD){ `7_LJ \>I  
stack[++top]=l+1; ~&:R\  
stack[++top]=j; ECzNByP  
} \(FDR  
_64@zdL+  
} OJ 5 !+#>  
file://new InsertSort().sort(data); mD)O\.uA  
insertSort(data); 2AW{qwk7  
} q_&IZ,{Vk  
/** *~uuCLv_  
* @param data ZRm\d3x4  
*/ 3p W MS&  
private void insertSort(int[] data) { |pR$' HO  
int temp; [;AcV73  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }AqD0Qd2Hj  
} AyO|9!F@A  
} _[o^23Hj  
} OF/)-}!  
q)b?X ^  
} QZox3LM1&.  
 Zwns|23n  
归并排序: r![JPhei  
~(/HgFLLu  
package org.rut.util.algorithm.support; Ds_ "m,  
Z|% 2495\  
import org.rut.util.algorithm.SortUtil; ?\M6P?tpo&  
zpqNmxmF  
/** # :w2Hf6Q  
* @author treeroot PZJ 4: h  
* @since 2006-2-2 5qSZ>DZ  
* @version 1.0 ]/Qy1,  
*/ /*^|5>-`i1  
public class MergeSort implements SortUtil.Sort{ Z;\"pP:  
6ya87H'e@  
/* (non-Javadoc) WUS9zK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X$iJ|=vW  
*/ E_1I|$  
public void sort(int[] data) { A]%t0>EL<  
int[] temp=new int[data.length]; arKmc@"X  
mergeSort(data,temp,0,data.length-1); S)@vl^3ec  
} >o#wP  
'a^tL[rLP1  
private void mergeSort(int[] data,int[] temp,int l,int r){ >wO$Vu `t  
int mid=(l+r)/2; ]G PJ(+5  
if(l==r) return ; _i@eOqoC  
mergeSort(data,temp,l,mid); B~z g"  
mergeSort(data,temp,mid+1,r); =L),V~b  
for(int i=l;i<=r;i++){ /'fDXSdP  
temp=data; {WeXURp&nF  
} @[lc0_ b  
int i1=l; 7O{O')o!  
int i2=mid+1; AWXpA1(  
for(int cur=l;cur<=r;cur++){ ?lN8~Ze  
if(i1==mid+1) M2Fj)w2   
data[cur]=temp[i2++]; M.N~fSJ   
else if(i2>r) fR%1FXpK&  
data[cur]=temp[i1++]; hUvuq,LH_  
else if(temp[i1] data[cur]=temp[i1++]; yUmsE-W  
else /NX7Vev  
data[cur]=temp[i2++]; Ca@=s  
} QsJW"4d  
} 0&IXzEOr  
RrdtU7i3  
} L"!ZY  
~!:Sp_y  
改进后的归并排序: JOx ,19r  
k+#l;<\2  
package org.rut.util.algorithm.support; 5vX 8mPR_  
_s^:zPl  
import org.rut.util.algorithm.SortUtil; 3u0<v%Qi  
F0'A/T'ht  
/** 0O,T=z[+>  
* @author treeroot _OU.JrqC  
* @since 2006-2-2 ;i9<y8Dha  
* @version 1.0 W({TC  
*/ j-`X_8W  
public class ImprovedMergeSort implements SortUtil.Sort { ~J>gVg%66  
wYO"znd  
private static final int THRESHOLD = 10; b}Hl$V(uD  
}i7U}T  
/* Gk"L%Zt)  
* (non-Javadoc) v<3o[mq  
* UcLNMn|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VMZ]n%XRXW  
*/ ]ZKt1@4AY  
public void sort(int[] data) { zP(=,)d  
int[] temp=new int[data.length]; g2{H^YUN$_  
mergeSort(data,temp,0,data.length-1); SU%rWH  
} (21 W6  
ezr\T  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5u|=;Hz*)  
int i, j, k; 8\)U|/A7  
int mid = (l + r) / 2; iQ|,&K0d]  
if (l == r) Zp(=[n5  
return; yI.}3y{^5  
if ((mid - l) >= THRESHOLD) nJ*mEB  
mergeSort(data, temp, l, mid); 2'<=H76  
else H/Ec^Lc+_  
insertSort(data, l, mid - l + 1); Awa|rIM  
if ((r - mid) > THRESHOLD) |v$%V#Bo  
mergeSort(data, temp, mid + 1, r); \YlF>{LVe  
else -M:hlwha  
insertSort(data, mid + 1, r - mid); q]N?@l]  
}>;ht5/i/  
for (i = l; i <= mid; i++) { ewAH'H]o  
temp = data; ~S^X"8(U  
} HLSfoQ&)v  
for (j = 1; j <= r - mid; j++) { juCG?}di;  
temp[r - j + 1] = data[j + mid]; XnE %$NJ  
} 9jMC |oE  
int a = temp[l];  H\=LE  
int b = temp[r]; LGo2^Xx  
for (i = l, j = r, k = l; k <= r; k++) { cNuHXaWp  
if (a < b) { k~1j/VHv  
data[k] = temp[i++]; oT|P1t.  
a = temp; j(%gMVu  
} else { 'z-;*!A}j  
data[k] = temp[j--]; lP@)   
b = temp[j]; (~ ]g,*+  
} 5"kx}f2$  
} S~k 0@  
} nrTv=*tDj  
9P7xoXJ@y  
/** "B9[cDM&  
* @param data &N"'7bK6n  
* @param l jB%"AvIX  
* @param i 0Oc}rRH(C  
*/ >lraYMc<rZ  
private void insertSort(int[] data, int start, int len) { ` y^zM/Ib  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _oJ2]f6KX  
} Dh&:-  
} 5@ bc(H  
} c{mKra  
} >P\h,1  
A,m4WO_q3  
堆排序: DHm[8 Qp  
YgfSC}a  
package org.rut.util.algorithm.support; ~*7O(8  
Jt2,LL:G  
import org.rut.util.algorithm.SortUtil; W&+y(Z-t  
b|sc'eP#?  
/** O->_/_  
* @author treeroot (ve+,H6w\  
* @since 2006-2-2 ]~ !X iCqu  
* @version 1.0 *?_qE  
*/ `E} p77  
public class HeapSort implements SortUtil.Sort{ *.m{jgi1X  
; .ysCF  
/* (non-Javadoc) 6kt]`H`cfJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \}$*}gW[}  
*/ RDs,sj/Y9?  
public void sort(int[] data) { Y&vHOA  
MaxHeap h=new MaxHeap(); jDlA<1  
h.init(data); T[0V%Br{d+  
for(int i=0;i h.remove(); kqVg2#<@M  
System.arraycopy(h.queue,1,data,0,data.length); 8^/+wa+G  
} cT-K@dg  
3yTQ  
private static class MaxHeap{ @72x`&|I?u  
@J-plJ4e  
void init(int[] data){ ug^om{e-  
this.queue=new int[data.length+1]; `OKo=e~,  
for(int i=0;i queue[++size]=data; CN.6E<9'kK  
fixUp(size); e7@li<3>d  
} %{R _^Y8t  
} |x &Z~y  
3<c*v/L{C\  
private int size=0; [AXsnpa/C  
|EF>Y9   
private int[] queue; b/}'Vf[  
a(8>n Z,V  
public int get() { )K{o<m~WAo  
return queue[1]; ;#3ekl{-g  
} \s=QiPK  
}*iAE>;  
public void remove() { 89zuL18V  
SortUtil.swap(queue,1,size--); OuB2 x=B  
fixDown(1); QF\kPk(CtD  
} g-."sniP$g  
file://fixdown p1Q/g Il  
private void fixDown(int k) { MWM +hk1fs  
int j; |]^l^e 6m  
while ((j = k << 1) <= size) { R=`U4Ml;  
if (j < size %26amp;%26amp; queue[j] j++; \). Nag+  
if (queue[k]>queue[j]) file://不用交换 QT#b>xV)1  
break; y0,Ft/D  
SortUtil.swap(queue,j,k); x.I][(}  
k = j; kr^0% A  
} G9\EZ\x!  
} '.pgXsC:=?  
private void fixUp(int k) { __ 8&Jv\  
while (k > 1) { KzV.+f  
int j = k >> 1; FyCBN tCv  
if (queue[j]>queue[k]) e\`wlaP,  
break; z~F37]W3[  
SortUtil.swap(queue,j,k); {3_Gjb5\\4  
k = j; }A-{6Qe  
} mv{<'  
} s~L`53A  
$( S*GF$S  
} .+OB!'dDK^  
eaEbH2J  
} W+KF2(lB  
Zw+=ng.q?  
SortUtil: 8pqs?L@W  
Gc wt7~  
package org.rut.util.algorithm; FtE90=$  
ri:,q/-  
import org.rut.util.algorithm.support.BubbleSort; '}_=kp'X  
import org.rut.util.algorithm.support.HeapSort; )&>L !,z  
import org.rut.util.algorithm.support.ImprovedMergeSort;  q$F)!&  
import org.rut.util.algorithm.support.ImprovedQuickSort; (}G!np  
import org.rut.util.algorithm.support.InsertSort; 6VC-KY  
import org.rut.util.algorithm.support.MergeSort; 4iwf\#  
import org.rut.util.algorithm.support.QuickSort; v{r1E]rY  
import org.rut.util.algorithm.support.SelectionSort; iecWa:('  
import org.rut.util.algorithm.support.ShellSort; /^Y[*5  
GjEqU;XBi  
/**  012Lwd  
* @author treeroot 6;gLwOeOHY  
* @since 2006-2-2 1t.R+1[c  
* @version 1.0 sa G8g  
*/ }"hW b(  
public class SortUtil { hqL+_| DW  
public final static int INSERT = 1; 8yn4}`Nc@  
public final static int BUBBLE = 2; 0 <g{ V  
public final static int SELECTION = 3; )Bo]=ZTJ^  
public final static int SHELL = 4; *,17x`1e  
public final static int QUICK = 5; NddO*`8+)  
public final static int IMPROVED_QUICK = 6; e^zHw^js  
public final static int MERGE = 7; opXDm\  
public final static int IMPROVED_MERGE = 8; "e@n:N!  
public final static int HEAP = 9; 7{4w 2)  
YGETMIT(  
public static void sort(int[] data) { H37Qg ApB  
sort(data, IMPROVED_QUICK); 9:Si] Pp+S  
} 19p8B&  
private static String[] name={ uxb:^d?D!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :5jexz."M  
}; BX*69  
zd.'*Dj  
private static Sort[] impl=new Sort[]{ L/yaVU{aEb  
new InsertSort(), :> SLQ[1  
new BubbleSort(), \9w~pO  
new SelectionSort(), E~qQai=]  
new ShellSort(), 4^[ /=J}  
new QuickSort(), +p z}4M`  
new ImprovedQuickSort(), gX^ PSsp  
new MergeSort(), myIe_k,F  
new ImprovedMergeSort(), W&YU^&`Yr  
new HeapSort() _lX8K:C(  
}; ALXTR%f  
TdFT];:  
public static String toString(int algorithm){ b1xpz1  
return name[algorithm-1]; &))\2pl  
} 0elxA8Z~e  
wx*1*KZ  
public static void sort(int[] data, int algorithm) { <!F3s`7~  
impl[algorithm-1].sort(data); JaI Kjn  
} aBxiK[[`  
]ENK8bW  
public static interface Sort { {~_ Y _-  
public void sort(int[] data); Bd&`Xfebj  
} VO_dA4C}z  
FqZgdmwR  
public static void swap(int[] data, int i, int j) { M?$ZJ-  
int temp = data; oxzq!U  
data = data[j]; /P:EWUf'  
data[j] = temp; 2)9r'ai?a  
} o/^1Wm=  
} :^#vxdIC?  
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