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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。 "oZ_1qi<  
插入排序: "10\y{`v^  
KV&6v`K/N  
package org.rut.util.algorithm.support; F 8sOc&L  
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import org.rut.util.algorithm.SortUtil; r]D>p&4  
/** }u0&>k|y  
* @author treeroot }.9a!/@Aj  
* @since 2006-2-2 \vV]fX   
* @version 1.0 u 6l)s0Q  
*/ $[MAm)c:]{  
public class InsertSort implements SortUtil.Sort{ KOXG=P0  
0~W XA=XG  
/* (non-Javadoc) Bv3B|D&+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `H*mQERb  
*/ +=|%9%  
public void sort(int[] data) { 09Eg ti.  
int temp; |G6'GTwZD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5-({z%:P  
} &vN!>bR  
} Y|hd!C-x  
} $;=?[Cn  
Da6l =M  
} Oz]$zRu/0  
]S9Z5l0  
冒泡排序: 0Db=/sJ>  
x 00'wY|  
package org.rut.util.algorithm.support; &%/T4$'+Y+  
})uyq_nz  
import org.rut.util.algorithm.SortUtil; V7gL*,3>=  
awQGu,<N  
/** 3syA$0TZt  
* @author treeroot t*Z5{   
* @since 2006-2-2 mOTA  
* @version 1.0 c`lL&*]  
*/ I|;zGmg#k  
public class BubbleSort implements SortUtil.Sort{ !a!4^zqp  
tr/.pw6  
/* (non-Javadoc) M80O;0N%A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mO]dP;,  
*/ Lrr(7cH,  
public void sort(int[] data) { ^vxNS[C`;  
int temp; B^R44j]3"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 017nhI  
if(data[j] SortUtil.swap(data,j,j-1); ('dbMH\O  
} 368 g> /#'  
} #NL'r99D/o  
} @PQd6%@  
} uocFOlU0n  
)g3c-W=  
} SsfC m C  
CMv8n@ry  
选择排序: V;J3lV<  
Hm|N {  
package org.rut.util.algorithm.support; P39oHW  
~P~q'  
import org.rut.util.algorithm.SortUtil;  OmfHr lA  
S-7C'dc  
/** .We{W{  
* @author treeroot c_.Fe'E  
* @since 2006-2-2 \ZE=WvnhZ  
* @version 1.0 >$ro\/  
*/ {/aHZ<I&^h  
public class SelectionSort implements SortUtil.Sort { Vr %ef:uVV  
1B~Z1w  
/* cb{"1z  
* (non-Javadoc) I};*O6D`  
* QJjk#*?,|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "d}ey=$h4  
*/ Co=Bq{GY  
public void sort(int[] data) { u'DpZ  
int temp; ^7;s4q  
for (int i = 0; i < data.length; i++) { $2}%3{<j  
int lowIndex = i; :c8d([)$  
for (int j = data.length - 1; j > i; j--) { a=9QwEZ  
if (data[j] < data[lowIndex]) { ,]n~j-X  
lowIndex = j; 0&2`)W?9  
} p_EM/jI,  
} A McZm0c`  
SortUtil.swap(data,i,lowIndex); a <F2]H=J  
} 0B}2~}#  
} <nN# K{AH  
j}(m$j'  
} "oF)u1_?  
G!%8DX5  
Shell排序: J ^<uo (  
:l iDoGDi  
package org.rut.util.algorithm.support; &rX#A@=  
C[#C/@  
import org.rut.util.algorithm.SortUtil; [9MbNJt 8~  
3Z#WAhfS:  
/** ?*7Mn`  
* @author treeroot '^$+G0jv  
* @since 2006-2-2 @^ m0>H  
* @version 1.0 "{t]~urLd  
*/ asCcBp  
public class ShellSort implements SortUtil.Sort{ p7r/`_'|  
A%^7D.j  
/* (non-Javadoc) m_`%#$s}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'lu3BQvfh  
*/ )Z['=+s%  
public void sort(int[] data) { S QGYH  
for(int i=data.length/2;i>2;i/=2){ Un T\6u  
for(int j=0;j insertSort(data,j,i); r=54@`O!  
} O.xtY @'"  
} u-mD"  
insertSort(data,0,1); ?k;htJcGv  
} &CN(PZv  
$p$p C/:%  
/** iJmzVR+  
* @param data fz2}M:u  
* @param j 8gt&*;'}*D  
* @param i  ~mi4V  
*/ '!,(G3  
private void insertSort(int[] data, int start, int inc) { wQ@:0GJH  
int temp; uxh>r2Xr=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0\@oqw]6hv  
} ijzwct#.  
} gxAy{ t  
} b`=g#B|  
6qT-  
} ~<_WYSzS  
-%^'x&e  
快速排序: }@tgc?C D  
jh`[ Y7RJO  
package org.rut.util.algorithm.support; uhp.Yv@c  
zEukEA^9`  
import org.rut.util.algorithm.SortUtil; {s*2d P)  
!=a]Awr\  
/** 8?YeaMIBB  
* @author treeroot q(~|roKA(  
* @since 2006-2-2 O7uCTB+  
* @version 1.0 uI%7jA~@  
*/ ('Uj|m}9  
public class QuickSort implements SortUtil.Sort{ t*)mX2R,  
257$ !  
/* (non-Javadoc) 7v0AG:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =oI6yf&8 Z  
*/ )4c?BCgy  
public void sort(int[] data) { R:R<Xt N`5  
quickSort(data,0,data.length-1); CgYX^h?Y9  
} |d*a~T0  
private void quickSort(int[] data,int i,int j){ lmD [Cn  
int pivotIndex=(i+j)/2; pIYXYQ=Z  
file://swap .uxM&|0H  
SortUtil.swap(data,pivotIndex,j); -V[x q  
VfP\)Rl  
int k=partition(data,i-1,j,data[j]); mw;4/ /R  
SortUtil.swap(data,k,j); 0(:SEiz6s  
if((k-i)>1) quickSort(data,i,k-1); |5X[/Q*K`W  
if((j-k)>1) quickSort(data,k+1,j); [;sTl~gC  
=adHP|S  
} IAq o(Qm  
/**  Y#~A":A  
* @param data d%-/U!z?  
* @param i %d(= >  
* @param j iemp%~UZ  
* @return RwOOe7mv  
*/ SPt/$uYJ  
private int partition(int[] data, int l, int r,int pivot) { |g!d[ct]  
do{ ^m&P0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u#Jr_ze  
SortUtil.swap(data,l,r); @h!Z0}d X(  
} ,c{ckm  
while(l SortUtil.swap(data,l,r); i.`n^R;N  
return l; 150-'Q  
} NVsaV;u  
~T-uk  
} e6J^J&`|4  
7Zd g314  
改进后的快速排序: !jSgpIp  
()O&O+R|)  
package org.rut.util.algorithm.support; C1UU v=|  
ugE!EEy[^  
import org.rut.util.algorithm.SortUtil; 1 ptyiy  
[0]A-#J  
/** .8!\6=iJB  
* @author treeroot v:yU+s|kN  
* @since 2006-2-2 A1,q 3<<D%  
* @version 1.0 0BhcXH t  
*/ ]W`?0VwF  
public class ImprovedQuickSort implements SortUtil.Sort { |('o g*$  
X:;x5'|  
private static int MAX_STACK_SIZE=4096; jnT Tj l  
private static int THRESHOLD=10; }zQgS8PQH  
/* (non-Javadoc) vgD+Y   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GQ7uxdqWBQ  
*/ NlKVl~_ C  
public void sort(int[] data) { )OxcCV?5Z  
int[] stack=new int[MAX_STACK_SIZE]; *vuI'EbM  
Dd pcov  
int top=-1; O#=%t  
int pivot; -eyF9++`  
int pivotIndex,l,r; dM= &?g  
2Ki_d  
stack[++top]=0; {5<fvMO!6  
stack[++top]=data.length-1; >V27#L2:J  
)E>yoUhN  
while(top>0){ Mb 4"bDBsl  
int j=stack[top--]; f pq|mY  
int i=stack[top--]; 6uFw+Ya#  
-bHlFNRm  
pivotIndex=(i+j)/2; /(51\RYkir  
pivot=data[pivotIndex]; 'hs4k|B  
/:(A9b-B  
SortUtil.swap(data,pivotIndex,j); t(uvc{K *  
}^&f {   
file://partition Y_+#|]=$B  
l=i-1; 'o#oRK{#  
r=j; WGUw`sc\  
do{ $6pLsX  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /]!2 k9u\  
SortUtil.swap(data,l,r); Bps%>P~.  
} a{hc{  
while(l SortUtil.swap(data,l,r); ^4^N}7>5  
SortUtil.swap(data,l,j); BO G.[?yx  
:,Y1#_\  
if((l-i)>THRESHOLD){ ~i>DF`w$  
stack[++top]=i; %\T,=9tD\  
stack[++top]=l-1; 8{2  
} o9"?z  
if((j-l)>THRESHOLD){ U{M3QOF  
stack[++top]=l+1; 'kcR:5B  
stack[++top]=j; aXJ/"k #Tl  
} 72Y 6gcg  
NGl 8*Af   
} oYZ  4F  
file://new InsertSort().sort(data); 7KhS{w6  
insertSort(data); rMbq_5}  
} DlE,aYB  
/** $">j~!'  
* @param data kF~(B]W(  
*/ k/wD@H N  
private void insertSort(int[] data) { qfE0J;e   
int temp; 6Uk+a=Ar  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7` ;sX?R  
} J#F5by%8  
} *0!p_Hco  
} Hf]:m hH  
 7N[".V]c  
} :1j8!R5  
s~A-qG>  
归并排序: '%[ Y  
:QGo -,6-  
package org.rut.util.algorithm.support; K%\r[NF  
^py=]7[I  
import org.rut.util.algorithm.SortUtil; ya8p 4N{_  
9Sxr9FLW~  
/** +yWD>PY(  
* @author treeroot m.Zy$SDj(  
* @since 2006-2-2 T3{~f  
* @version 1.0 /h+ W L  
*/ },l i'r#p  
public class MergeSort implements SortUtil.Sort{ Nbd4>M<  
y&,|+h  
/* (non-Javadoc) -|#{V.G3'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v-3VzAd=*&  
*/ Bc"MOSV0  
public void sort(int[] data) { Yjc U2S"=P  
int[] temp=new int[data.length]; W4^zKnH  
mergeSort(data,temp,0,data.length-1); uv/\1N;V3  
} jj2iF/  
6-_g1vq  
private void mergeSort(int[] data,int[] temp,int l,int r){ KQNQ<OE 4  
int mid=(l+r)/2; [q2:d^_FA  
if(l==r) return ; OlRXgJ  
mergeSort(data,temp,l,mid); rxgSQ+G_  
mergeSort(data,temp,mid+1,r); $lf/Mg_H  
for(int i=l;i<=r;i++){ B\RAX#  
temp=data; M0fN[!*z  
} qS/}aDk&  
int i1=l; j*?8w(!  
int i2=mid+1; 5 :IDl1f5  
for(int cur=l;cur<=r;cur++){ I0 ~'z f  
if(i1==mid+1) t[`LG)  
data[cur]=temp[i2++]; Gg'!(]v  
else if(i2>r)  O>]i?  
data[cur]=temp[i1++]; F(ydqgH~a  
else if(temp[i1] data[cur]=temp[i1++]; Hq W /  
else -a)1L'R  
data[cur]=temp[i2++]; A r]*?:4y[  
} KSchgon0V  
} qKfUm:7Q_  
eavn.I8J  
} :6nD"5(  
qhGz2<}_j  
改进后的归并排序: _HHvL=  
HXKM<E{j  
package org.rut.util.algorithm.support; SPb +H19;  
0* F` h  
import org.rut.util.algorithm.SortUtil; ^^"zjl*^  
~-A"j\gi"  
/** )hrsA&1w  
* @author treeroot M/p9 I gp  
* @since 2006-2-2 ?0/$RpFEM#  
* @version 1.0 x!_5 /  
*/ /&Oo)OB;  
public class ImprovedMergeSort implements SortUtil.Sort { l|WFS  
i|1*bZ6'  
private static final int THRESHOLD = 10; >SDQ@63E?  
(Ut8pa+yX  
/* ;Yee0O!d4  
* (non-Javadoc) !y b06Z\f  
* B8Fb$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )&1v[]%S  
*/ ^H.B6h?  
public void sort(int[] data) { /(JG\Ut  
int[] temp=new int[data.length]; l{dsm1#W~  
mergeSort(data,temp,0,data.length-1); ^\ x'4!W  
} fY&TI}Y  
#!F>cez  
private void mergeSort(int[] data, int[] temp, int l, int r) { "++\6 H<  
int i, j, k; 1@L18%h  
int mid = (l + r) / 2; n/5T{NfG  
if (l == r) O.B9w+G=  
return; 2/ 4zg  
if ((mid - l) >= THRESHOLD) t <` As6}  
mergeSort(data, temp, l, mid); 1;(h0j  
else JW[6 ^Rw  
insertSort(data, l, mid - l + 1); D-BT`@~l  
if ((r - mid) > THRESHOLD) RdPk1?}K  
mergeSort(data, temp, mid + 1, r); i4|R0>b  
else nm1dd{U6^  
insertSort(data, mid + 1, r - mid); [L+*pW+$\.  
k4V3.i!E  
for (i = l; i <= mid; i++) { ?-)!dl%N  
temp = data; k 3m_L-  
} [=(8yUV'G  
for (j = 1; j <= r - mid; j++) { l9f_NJHo  
temp[r - j + 1] = data[j + mid]; OWewV@VXR  
} lk 1\|Q I  
int a = temp[l]; 53:~a  
int b = temp[r]; <8b1OdA  
for (i = l, j = r, k = l; k <= r; k++) { (U&  
if (a < b) { Np+PUu>  
data[k] = temp[i++]; 5bt>MoKxv  
a = temp; i6KfH\{N  
} else { > mO*.'Gm  
data[k] = temp[j--]; pRun5 )7  
b = temp[j]; yIKpyyC9H  
} >O\+9T@  
} CKn2ZL  
} _dm0*T ?  
&qS%~h%2  
/** u$R5Q{H_  
* @param data BjfVNF;hk:  
* @param l I/njyV)H  
* @param i u"qVT9C$=  
*/ ]Kq<U%x$  
private void insertSort(int[] data, int start, int len) { 9iG&9tB@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C}) Dvh  
}  c`xNTr01  
} G"?7 Z&+  
} *eoH"UFYQ#  
} d/9YtG%q  
0]SWyC :  
堆排序: ikc1,o  
~QbHp|g  
package org.rut.util.algorithm.support; P_5aHeiJ  
oY^I|FEOz  
import org.rut.util.algorithm.SortUtil; Yc]V+NxxQ  
K2Abu?  
/** /7D5I\  
* @author treeroot .JLJ(WM  
* @since 2006-2-2 teS>t!d  
* @version 1.0 L-w3A:jk  
*/ <u\Hy0g  
public class HeapSort implements SortUtil.Sort{ b 5|*p(7[  
#1haq[Uv7  
/* (non-Javadoc) HZAT_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C<J*C0vQO  
*/ +H3~Infr4f  
public void sort(int[] data) { `;}`>!8j  
MaxHeap h=new MaxHeap(); B`-uZ9k   
h.init(data); Sn*s@RE\s  
for(int i=0;i h.remove(); q?7''xk7  
System.arraycopy(h.queue,1,data,0,data.length); xZ {6!=4!  
} eV*QUjS~  
rtS cQ  
private static class MaxHeap{ .5Y{Yme  
z]N#.utQ  
void init(int[] data){ U*a#{C7"  
this.queue=new int[data.length+1]; ?IAu,s*u  
for(int i=0;i queue[++size]=data; |V\{U j  
fixUp(size); Jai]z  
} e=(Y,e3  
} {'4#{zmp  
"]=OR>  
private int size=0; uNn1qV  
:o^ioX.J  
private int[] queue; X&zGgP/  
+zMhA p  
public int get() { :<P4=P P  
return queue[1]; GPHb-  
} + -Rf@  
6HCg<_j]  
public void remove() { Fl.?*KBz  
SortUtil.swap(queue,1,size--); V| Fo@  
fixDown(1); c)#7T<>*'  
} GG>53} 7{  
file://fixdown ^)9/Wz _x  
private void fixDown(int k) { "~ID.G|<  
int j;  G06;x   
while ((j = k << 1) <= size) { F\N0<o  
if (j < size %26amp;%26amp; queue[j] j++; 7#C$}1XJ1  
if (queue[k]>queue[j]) file://不用交换 \L(jNN0_R  
break; }SWfP5D@  
SortUtil.swap(queue,j,k); 9!jF$  
k = j; I+ |uyc  
}  d\ #yWY  
} F8?,}5j  
private void fixUp(int k) { f0 g/`j@Up  
while (k > 1) { n@+?tYk*e  
int j = k >> 1; .eIs$  
if (queue[j]>queue[k]) g5|&6+t.  
break; HVA:|Z19  
SortUtil.swap(queue,j,k); qe&|6M!  
k = j; '|]}f}Go  
} M%_*vD  
} !f(A9V  
}T.>p#z  
} $Zyuhji^  
}'Ap@4  
} B`QF;,3S  
U=JK  
SortUtil: 9c]$d  
H&ek"nP_  
package org.rut.util.algorithm; C2R"96M7q  
>e!J(4.-  
import org.rut.util.algorithm.support.BubbleSort; dE8f?L'  
import org.rut.util.algorithm.support.HeapSort; Kv* 1=HES  
import org.rut.util.algorithm.support.ImprovedMergeSort; #6c,_!  
import org.rut.util.algorithm.support.ImprovedQuickSort; SHYekX  
import org.rut.util.algorithm.support.InsertSort; g"n>v c7  
import org.rut.util.algorithm.support.MergeSort; TFb7P/g  
import org.rut.util.algorithm.support.QuickSort; ]7<$1ta  
import org.rut.util.algorithm.support.SelectionSort; B)7:*Kj  
import org.rut.util.algorithm.support.ShellSort; 8WDL.IO  
s;P _LaIp)  
/** }BS EK<W  
* @author treeroot vfqXHc unj  
* @since 2006-2-2 ^?fsJ  
* @version 1.0 oU1N>,  
*/ VJ-t #q"  
public class SortUtil { Po=:-Of:  
public final static int INSERT = 1; ,9G'1%z,  
public final static int BUBBLE = 2; xytWE:=  
public final static int SELECTION = 3; H9jlp.F  
public final static int SHELL = 4; {G=>WAXo  
public final static int QUICK = 5; 'KmM %tN  
public final static int IMPROVED_QUICK = 6; 8-+# !]  
public final static int MERGE = 7; ]uhG&: }  
public final static int IMPROVED_MERGE = 8; $xW9))  
public final static int HEAP = 9; GjEV]hqR  
C4E}.``Hm  
public static void sort(int[] data) { \68bXY.  
sort(data, IMPROVED_QUICK); ):G+*3yb  
} W:<2" &7  
private static String[] name={ ;gEEdx'&T  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ow?~+) 4  
}; R{brf6,  
O(evlci  
private static Sort[] impl=new Sort[]{ -U> )B  
new InsertSort(), rYPuo  
new BubbleSort(), c)Q-yPMl)  
new SelectionSort(), &56\@t^  
new ShellSort(), =S54p(>  
new QuickSort(), B[sI7D>Y  
new ImprovedQuickSort(), evEdFY  
new MergeSort(), S~ckIN]  
new ImprovedMergeSort(), N *m;A6?  
new HeapSort() Jyd[Sc)  
}; {>9<H]cSP  
w,6gnO  
public static String toString(int algorithm){ S8;c0}-  
return name[algorithm-1]; uUaDesz~=  
} ax _v+v %  
dn~k_J=p  
public static void sort(int[] data, int algorithm) { W"/,<xHuh  
impl[algorithm-1].sort(data); #lFsgb  
}  1^hG}#6_  
s;<]gaonB_  
public static interface Sort { ?jO<<@*2S  
public void sort(int[] data); c;b<z|}z  
} f~?5;f:E  
Yc[vH=gV}  
public static void swap(int[] data, int i, int j) { p&(z'd  
int temp = data; mtFC H  
data = data[j]; +tkm,>s  
data[j] = temp; #?M[Q:  
} p/ZgzHyF  
} sn[<Lq  
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