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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。 `ASDUgx Mq  
插入排序: 8['R D`O  
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package org.rut.util.algorithm.support; Q#eMwM#~  
T[\1=h]  
import org.rut.util.algorithm.SortUtil; HI8mNX3 "j  
/** t13V>9to  
* @author treeroot Z[?n{vD7  
* @since 2006-2-2 -XBZ1q  
* @version 1.0 `5Y*) q  
*/ f?5>V   
public class InsertSort implements SortUtil.Sort{ /QXUD.( 8  
bmG`:_  
/* (non-Javadoc) z CLaHx!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  t`o"K  
*/ pD{OB  
public void sort(int[] data) { Q#g`D,:o%~  
int temp; j`_S%E%X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @A,8 >0+  
} +CSpL2@  
} o~LJ+m6-)  
} ]_s3<&R  
]1 f^ SxSI  
} a/J<(sak~X  
:c*"Dx'D  
冒泡排序: 2-4N)q  
&_L@hsm  
package org.rut.util.algorithm.support; Ju+3}  
|*bUcS<S  
import org.rut.util.algorithm.SortUtil; tq L(H25z  
}_+XN"}C  
/** !*#9b  
* @author treeroot ^'X I%fEf  
* @since 2006-2-2 t'44X  
* @version 1.0 <6Q^o[L  
*/ a#p+.)Wm  
public class BubbleSort implements SortUtil.Sort{ >_}isCd,  
@|Pm%K`1  
/* (non-Javadoc) _(m72o0g>>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D \ rns+  
*/ |1@O>GG  
public void sort(int[] data) { dseI~}  
int temp; ZLQmEF[>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ i~u4v3r=  
if(data[j] SortUtil.swap(data,j,j-1); 0%f}Q7*R  
} u({^8: AYu  
} PxKBcx4o`  
} v-8>@s jy8  
} OUulG16kK  
R~g|w4a@sC  
} !gX xM,R  
\+o\wTW  
选择排序: P+CV4;Xz  
rNN>tpZ}  
package org.rut.util.algorithm.support; opa/+V3E4  
yy3rh(ea  
import org.rut.util.algorithm.SortUtil; I!/32* s1t  
Ca |}i+  
/** mb*Yw 6q  
* @author treeroot s#$t!F??9  
* @since 2006-2-2 !9d7wPUFr  
* @version 1.0 +g1>h ,K 3  
*/ H!;N0",]N  
public class SelectionSort implements SortUtil.Sort { IyO 0~Vx>  
O=Su E/q  
/* <'\Nv._2a  
* (non-Javadoc) u&~Xgq5[  
* 5_9`v@-4_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w{tA{{  
*/ A{_CU-,  
public void sort(int[] data) { v47' dC  
int temp; ".}R$ W  
for (int i = 0; i < data.length; i++) { ,hzRqFg2  
int lowIndex = i; S#ryEgc]  
for (int j = data.length - 1; j > i; j--) { @GQe-04W`  
if (data[j] < data[lowIndex]) { !S?Fz]  
lowIndex = j; 3Zp<#  
} <#0i*PM_  
} Qa2h#0j  
SortUtil.swap(data,i,lowIndex); !oz{XWE  
} UBd+,]"f  
} 0AM_D >fH  
FVXsu!R  
} YnpN -Y%g  
;+75"=[YT  
Shell排序: 1Ek3^TOv7  
)G48,. "  
package org.rut.util.algorithm.support; y [McdlH m  
Z `F[0-  
import org.rut.util.algorithm.SortUtil; Fo3*PcUv  
*~8F.c x  
/** O?vh]o  
* @author treeroot Z}O]pm>=G  
* @since 2006-2-2 qGX@mo({  
* @version 1.0 h3F559bw/<  
*/ $:s@nKgnD~  
public class ShellSort implements SortUtil.Sort{ bidFBldKl  
bd /A0i?C  
/* (non-Javadoc) a8xvK;`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i[z 2'tx4  
*/ 6 lzjaW5h  
public void sort(int[] data) { JE O$v|X  
for(int i=data.length/2;i>2;i/=2){ (aYu[ML  
for(int j=0;j insertSort(data,j,i); ?e9tnk3  
} 21!X[) r  
} ..yV=idI  
insertSort(data,0,1); $#V'm{Hh  
} 4&E"{d >  
5 3pW:`  
/** -'c qepC{T  
* @param data HQ+{9Z8 ?5  
* @param j L;:|bVH  
* @param i her>L3G-E  
*/ fTEZ@#p  
private void insertSort(int[] data, int start, int inc) { Mnranhe>G  
int temp; hp -|a  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A^aY-V  
} C).\ J !  
} @Z/jaAjUC  
} F w{:shC  
]v<8 l4p;  
} hT%fM3|,e  
8i;1JA  
快速排序: &l cfX\y  
vapC5,W"2-  
package org.rut.util.algorithm.support; C-edQWbcP  
|0Z J[[2  
import org.rut.util.algorithm.SortUtil; M[I=N  
o?ug`m"  
/** @. sn  
* @author treeroot 6zM:p/  
* @since 2006-2-2 :[@rA;L  
* @version 1.0 /J^dz vH  
*/ 23CvfP  
public class QuickSort implements SortUtil.Sort{ !W XV1S  
,OlS>>,  
/* (non-Javadoc) |2'WSAWG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .7.1JT#@A7  
*/ D@p{EH  
public void sort(int[] data) { ql9n`?Q  
quickSort(data,0,data.length-1); ~Jf(M ^E  
} /BgX Y}JC.  
private void quickSort(int[] data,int i,int j){ 6EC',=)6R  
int pivotIndex=(i+j)/2; n]6 '!Eo  
file://swap OK4r)  
SortUtil.swap(data,pivotIndex,j); ,LZA\XC  
v RD/67  
int k=partition(data,i-1,j,data[j]); 38sLyoG=i  
SortUtil.swap(data,k,j); =b66H]h?  
if((k-i)>1) quickSort(data,i,k-1); XrUI [ryE  
if((j-k)>1) quickSort(data,k+1,j); .?:#<=1  
Q>L(=j2t  
} [%^0L~:  
/** hV $Zr4'  
* @param data ";dS~(~  
* @param i \asn^V@"zz  
* @param j 2lfEJw($  
* @return M*k,M=sX  
*/ VMABj\yG  
private int partition(int[] data, int l, int r,int pivot) { Uic  
do{ aMu6{u6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gjsks(x  
SortUtil.swap(data,l,r); e <+)IW:  
} E3a^"V3p  
while(l SortUtil.swap(data,l,r); tRPIvq/  
return l; sm"Rp~[i  
} 5~pxu  
kmW/{I9,ua  
} 6`-<N!  
Yv=L'0K&  
改进后的快速排序: :UT \L2 q=  
U _pPI$ =  
package org.rut.util.algorithm.support; OfrzmL<K  
v,opyTwG|  
import org.rut.util.algorithm.SortUtil; $<nD-4p  
O!>#q4&]  
/** xVsI#`<a  
* @author treeroot h% >ZN-K)  
* @since 2006-2-2 # Ey_.4S  
* @version 1.0 LawE 3CD  
*/ K!AA4!eUzM  
public class ImprovedQuickSort implements SortUtil.Sort { h}|.#!C3  
uj)vh  
private static int MAX_STACK_SIZE=4096; Iep_,o.Sk  
private static int THRESHOLD=10; DN%JT[7  
/* (non-Javadoc) aAqM)T83  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }#tbK 2[  
*/ dB~A4pZa  
public void sort(int[] data) { ;^JMX4[  
int[] stack=new int[MAX_STACK_SIZE]; 3\ ]j4*i!  
k@9hth2Q  
int top=-1; A1;'S<a  
int pivot; 7%$3`4i`O  
int pivotIndex,l,r; <FR!x#!   
qYoU\y7  
stack[++top]=0; 7*K2zu3  
stack[++top]=data.length-1; ,2U  
W)Mz1v #s  
while(top>0){ =,6X_m  
int j=stack[top--]; },X.a@:  
int i=stack[top--]; ^d# AU7V|  
Mq\?J{E  
pivotIndex=(i+j)/2; G_qt~U  
pivot=data[pivotIndex]; QeT~s5 H  
<8~c7kT'  
SortUtil.swap(data,pivotIndex,j); _9"ZMUZ{  
L{1[:a)']B  
file://partition $ r-rIW5\  
l=i-1; djoP`r  
r=j; 'w1ll9O  
do{ 'k}w|gNB  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); IR3+BDE)>  
SortUtil.swap(data,l,r); %qqCpg4  
} ts@w9|  
while(l SortUtil.swap(data,l,r); /F^ Jn_  
SortUtil.swap(data,l,j); n4B uM R  
,Y| ;V  
if((l-i)>THRESHOLD){ G,+3(C  
stack[++top]=i; D'%M#S0   
stack[++top]=l-1; -`\n/"#X6i  
} CXuMNa  
if((j-l)>THRESHOLD){ 9]T61Z{OW1  
stack[++top]=l+1; :3s^, g  
stack[++top]=j; zXUB6. e  
} g`Q!5WK*  
89KFZ[.}]  
} 3A0Qjj=  
file://new InsertSort().sort(data); =oq=``%  
insertSort(data); H>D?  
} toU<InN  
/** EqBTN07dZS  
* @param data YnU*MC}  
*/ *T}c{/  
private void insertSort(int[] data) { 6)ysiAH?  
int temp; H}&JrT95  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "Q\b6 7Ch  
} wmX(%5vY^  
} ,jW a&7  
} }4piZ ch  
DTsD<o  
} ?b}e0C-a  
Z6-  
归并排序: 9:3`LY3wW  
ew,okRCN  
package org.rut.util.algorithm.support; f`rI]v|@  
cM,g, E}  
import org.rut.util.algorithm.SortUtil;  `2\:b^h  
7$Wbf4  
/** ?MfwRWY  
* @author treeroot ![4_K':=  
* @since 2006-2-2 4\ElMb[]  
* @version 1.0 .=yv m  
*/ n``9H 91  
public class MergeSort implements SortUtil.Sort{ #RyTa /L  
ugj I$u  
/* (non-Javadoc) 2[1t )EW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] X)~D!mA  
*/ p1.3)=T  
public void sort(int[] data) { X$~T*l0  
int[] temp=new int[data.length]; +~:OUR*>  
mergeSort(data,temp,0,data.length-1); CRiqY_gBf  
} e\-,e+  
K:VZ#U(_  
private void mergeSort(int[] data,int[] temp,int l,int r){ B>S>t5$  
int mid=(l+r)/2; CQmozh-  
if(l==r) return ; u|\?6fz  
mergeSort(data,temp,l,mid); \J#&]o)Y  
mergeSort(data,temp,mid+1,r); ;;C2t&(  
for(int i=l;i<=r;i++){ uvR l`"Y  
temp=data; *c%{b3T_  
} Hj`\Fm*A  
int i1=l; cdGBo4  
int i2=mid+1;  V_e  
for(int cur=l;cur<=r;cur++){ N9*QQ0  
if(i1==mid+1) I\M }Dxpp  
data[cur]=temp[i2++]; ]Nssn\X7  
else if(i2>r) TI2K_'  
data[cur]=temp[i1++]; 2qVoe}F  
else if(temp[i1] data[cur]=temp[i1++]; }}rp/16  
else j0Cj&x%qF}  
data[cur]=temp[i2++]; zN)).a  
} oxUBlye  
} py%~Qz%  
eR`Q7]j] -  
} 48 0M|^  
amX1idHo^  
改进后的归并排序: &sYxe:H  
x TH3g^E  
package org.rut.util.algorithm.support; }7xcHVO8-  
<dVJV?i;  
import org.rut.util.algorithm.SortUtil; Wl+spWqW  
k=d0%} `M(  
/** %\}5u[V  
* @author treeroot AOwmPHEL  
* @since 2006-2-2 #_K<-m%9  
* @version 1.0 K3WaBcm  
*/ gLFTnMO  
public class ImprovedMergeSort implements SortUtil.Sort { RE D@|[Qh  
H4T~Kv  
private static final int THRESHOLD = 10; #, 1)@[  
<u],R.S)  
/* j/NX  
* (non-Javadoc) p&4n"hC  
* 2}* 8( 32  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xoGrXt9&  
*/ ] O~$|Wk  
public void sort(int[] data) { ;n|%W,b-  
int[] temp=new int[data.length]; &m\Uc  
mergeSort(data,temp,0,data.length-1); oSjYp(h:  
} "(dI/}  
{Xr 9]g`  
private void mergeSort(int[] data, int[] temp, int l, int r) { |QR9#Iv  
int i, j, k; ]Wjcr2Wq  
int mid = (l + r) / 2; ;R<V-gab  
if (l == r) Bga4kjfmk  
return; .wlKl[lE2  
if ((mid - l) >= THRESHOLD) f87XE";:A  
mergeSort(data, temp, l, mid); s%>8y\MaK  
else bR:hu}YS  
insertSort(data, l, mid - l + 1); O 9M?Wk :  
if ((r - mid) > THRESHOLD) p-w:l*-`  
mergeSort(data, temp, mid + 1, r); yOAC<<Tzus  
else JBZ1DZAWC  
insertSort(data, mid + 1, r - mid); PRFl%M.H`  
wuk\__f4  
for (i = l; i <= mid; i++) { z!.cc6R  
temp = data; N 6\Ey{  
} oS<Gj I:  
for (j = 1; j <= r - mid; j++) { _2}~Vqb+  
temp[r - j + 1] = data[j + mid]; &h!O<'*2  
} %q9"2] cR  
int a = temp[l]; T2tvU*[=  
int b = temp[r]; Zw'050~-  
for (i = l, j = r, k = l; k <= r; k++) { ma<uXq  
if (a < b) { 6R$Yh0%  
data[k] = temp[i++]; o-AF_N  
a = temp; ;+#Nb/M  
} else { 7`^Y*:(  
data[k] = temp[j--]; $"MVr5q6  
b = temp[j]; -XK;B--c  
} ( plT/0=^t  
} EAxdF u  
} WB<MU:.Vc  
gf9U<J#&C  
/** S;D]ym  
* @param data bGy|T*@  
* @param l @de0)AJG6  
* @param i L 8;H_:~_'  
*/ >El]5M7h7  
private void insertSort(int[] data, int start, int len) { dV}]\ 8N  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \1n (Jr.<  
} 9Nx%Sdu  
} I_N:j,Mx  
} R?2HnJh  
} 4PkKL/E  
Q 8;JvCz   
堆排序: ^SsnCn-e  
x ju*zmu  
package org.rut.util.algorithm.support; gX(Xj@=(&  
0M&~;`W}  
import org.rut.util.algorithm.SortUtil; 19pFNg'kA  
gN7 3)uJ0  
/** D`'Cnt/  
* @author treeroot qK2jJ3)>  
* @since 2006-2-2 G]EI!-y  
* @version 1.0 0S'@(p[A  
*/ ~Cg7  
public class HeapSort implements SortUtil.Sort{ ue@W@pj  
jt9- v-  
/* (non-Javadoc) U}k@%m,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7sWe32  
*/ |-S+x]9  
public void sort(int[] data) { H!OX1F  
MaxHeap h=new MaxHeap(); Iu5 9W >  
h.init(data); 8t) g fSG  
for(int i=0;i h.remove(); 1w7XM0SHcn  
System.arraycopy(h.queue,1,data,0,data.length); b?lRada{I  
} N7 hlM  
\7#w@3*  
private static class MaxHeap{ x2r.4  
HvKdV`bz  
void init(int[] data){ t.VVE:A^%  
this.queue=new int[data.length+1]; FKL@,>!<e  
for(int i=0;i queue[++size]=data; wPu.hVz  
fixUp(size); v;Q*0%~  
} so/0f1R?~  
} J|^z>gP(  
mh`uvqY  
private int size=0; ur=:Ha  
4`fV_H.8  
private int[] queue; k'PvQl"I  
a^E>LJL  
public int get() { j72mm!  
return queue[1]; ~-uf%=  
} jvD_{r  
R#8cOmZ  
public void remove() { 7 b(  
SortUtil.swap(queue,1,size--); YjJ^SU`*  
fixDown(1); Q-#<{' (  
} fo`R=|L[  
file://fixdown LHu  
private void fixDown(int k) { 5JK'2J&  
int j; %g89eaEZ  
while ((j = k << 1) <= size) { B!8X?8D  
if (j < size %26amp;%26amp; queue[j] j++; 8faT@J'e;  
if (queue[k]>queue[j]) file://不用交换 {D :WXvI  
break; !<VP[%2L~  
SortUtil.swap(queue,j,k); Li0+%ijM  
k = j; #CAZ}];Qx  
} .a(G=fk  
} 4GeN<9~YS  
private void fixUp(int k) { t%5bDdo  
while (k > 1) { &(l.jgqg&  
int j = k >> 1; in,0(I&I  
if (queue[j]>queue[k]) ,Shzew+  
break; wq!9wk9  
SortUtil.swap(queue,j,k); $sg-P|Wo  
k = j; YWDgRb  
} j8bA"r1  
} S~ S>62  
 "^BA5  
} ggkz fg&  
u^c/1H:6  
} X eY[;}9  
9HiyN>(  
SortUtil: ; lrO?sm  
CR2.kuM0~  
package org.rut.util.algorithm; G %\/[ B  
&DHIYj1 i  
import org.rut.util.algorithm.support.BubbleSort; ?"<m{,yQI  
import org.rut.util.algorithm.support.HeapSort; *zDDi(@vtK  
import org.rut.util.algorithm.support.ImprovedMergeSort; /-m)  
import org.rut.util.algorithm.support.ImprovedQuickSort; c;-N RvVb  
import org.rut.util.algorithm.support.InsertSort; *B{]  
import org.rut.util.algorithm.support.MergeSort; 0T#z"l<L  
import org.rut.util.algorithm.support.QuickSort; ,_w}\'?L  
import org.rut.util.algorithm.support.SelectionSort; *P]]7DR  
import org.rut.util.algorithm.support.ShellSort; .d$Q5Qae  
'@w'(}3!3R  
/** |8[!`T*s  
* @author treeroot 2J$vX(  
* @since 2006-2-2 BhbfPQ  
* @version 1.0 gW4fwE^  
*/ nhC8Tq[m  
public class SortUtil { f<nK;  
public final static int INSERT = 1; =3SJl1w1  
public final static int BUBBLE = 2; HkhZB^_V  
public final static int SELECTION = 3; LjW32>B  
public final static int SHELL = 4; Y}s6__  
public final static int QUICK = 5; ,L~aa?Nb-  
public final static int IMPROVED_QUICK = 6; 8y_(Iu|:  
public final static int MERGE = 7; c9Cc%EK  
public final static int IMPROVED_MERGE = 8; xx7&y !_  
public final static int HEAP = 9; k$8Zg*)  
NG:4Q.G1g  
public static void sort(int[] data) { :sLg$OF  
sort(data, IMPROVED_QUICK); (JnEso-V  
} +j+ v(-  
private static String[] name={ K3h7gY|.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" nR@mm j  
}; E]g6|,4~-  
^-n^IR}J  
private static Sort[] impl=new Sort[]{ (vzYgU,  
new InsertSort(), ~&F|g2:  
new BubbleSort(), _y>drvg  
new SelectionSort(), $FX$nY  
new ShellSort(), gGBRfq>  
new QuickSort(), aK|  
new ImprovedQuickSort(), #Yp&yi }  
new MergeSort(), fO^s4gWTg  
new ImprovedMergeSort(), hJSWh5]  
new HeapSort() YDYNAOThnb  
}; HrFbUK@@  
$3&XM  
public static String toString(int algorithm){ XkoPN]0n  
return name[algorithm-1]; +t&)Z  
} ;V?(j 3b[  
0.nkh6 ?  
public static void sort(int[] data, int algorithm) { !Y7$cU &  
impl[algorithm-1].sort(data); "iX\U'`  
} 4MW oGV9  
fl9VokAT  
public static interface Sort { _?'W30Dg  
public void sort(int[] data); )^4Ljb1  
} "*l{ m2"  
v3t<rv  
public static void swap(int[] data, int i, int j) { KU0Ad);e  
int temp = data; q(hBqUW  
data = data[j]; 9kqR-T|Q  
data[j] = temp; fZsw+PSy  
} OK`^DIr5l  
} PvjZoF["  
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