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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。 )tS-.PrA-  
插入排序: aBhV3Fd[B  
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package org.rut.util.algorithm.support; ` J]xP$)  
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import org.rut.util.algorithm.SortUtil; zvY+R\,in  
/** qi(*ty  
* @author treeroot b7HffO O  
* @since 2006-2-2 qj!eLA-aD  
* @version 1.0 WNs}sNSf  
*/ 7\ypW$Ot  
public class InsertSort implements SortUtil.Sort{ 5+- I5HX|~  
hN3u@P^  
/* (non-Javadoc) y7: tr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7G<t"'  
*/ y+9h~,:A  
public void sort(int[] data) { w\Mnu}<e$  
int temp; ;#1Iiuh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6BocGo({  
} tu0aD%C  
} .$&Q[r3Lu  
} e4`uVq5  
a^t?vv  
} d;7 uFh|o  
#DFV=:|~  
冒泡排序: <@G8ni  
KVPR}qTP;  
package org.rut.util.algorithm.support; BQ/PGY>  
\L # INP4~  
import org.rut.util.algorithm.SortUtil; hIYTe  
}^-<k0A4?  
/** 8 Ti G3  
* @author treeroot 4nqoZk^R  
* @since 2006-2-2 w8Vw1wW  
* @version 1.0 \, &9  
*/ @?kM'*mrZM  
public class BubbleSort implements SortUtil.Sort{ oH#v6{y  
Pm+tQ  
/* (non-Javadoc) RO&H5m r%@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ B/9{0n'  
*/ 8z2Rry w  
public void sort(int[] data) { ]]0,|My7  
int temp; 6G AaV[])'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ n6MM5h/#r  
if(data[j] SortUtil.swap(data,j,j-1); x%N\5 V1  
} -c%dvck^,  
} uH@FU60  
} f )Z%pgB  
} t<j^q`;@v  
Sv'y e  
} 5D Y\:AF  
-|S]oJy  
选择排序: HYK!}&  
i3VW1~.8  
package org.rut.util.algorithm.support; Km#pX1]>e  
*\uM.m0$  
import org.rut.util.algorithm.SortUtil; _[K"gu  
,=QM#l]  
/** b'YE9E  
* @author treeroot 8RW&r  
* @since 2006-2-2 a4 MZ;5  
* @version 1.0 r?/A?DMe  
*/ TUIk$U?/I  
public class SelectionSort implements SortUtil.Sort { G:W>I=^DaR  
"O[j!fG8,  
/* *sw7niw  
* (non-Javadoc) L';MP^  
* Y&HK1>M_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bux [6O %  
*/ Hr<o!e{Y  
public void sort(int[] data) { S6d`ioi-  
int temp; kc `V4b%  
for (int i = 0; i < data.length; i++) { D*PYr{z'  
int lowIndex = i; O81X ;JdP3  
for (int j = data.length - 1; j > i; j--) { .7NNT18  
if (data[j] < data[lowIndex]) { )~J>X{hy  
lowIndex = j; kq=V4-a[  
} a:TvWzX,  
} Kl{>jr8B3  
SortUtil.swap(data,i,lowIndex); 6 K` c/)  
} h}`!(K^;3  
} P>ceeoYQuA  
R6-n IY,  
} >EsziRm  
=sJ _yq0#R  
Shell排序: hU]HTX'R  
}[+!$#  
package org.rut.util.algorithm.support; lv&mp0V+  
!$;a[Te  
import org.rut.util.algorithm.SortUtil; YgUH'P-  
WE6a'  
/** B/JO~;{  
* @author treeroot v1JS~uDz  
* @since 2006-2-2 7dG 79H  
* @version 1.0 Ys+OB*8AE  
*/ H5CR'Rp  
public class ShellSort implements SortUtil.Sort{ $?G"GQ!.  
g>rp@M  
/* (non-Javadoc) m([(:.X/IX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oX@ya3!Pz  
*/ =J-5.0Q\_\  
public void sort(int[] data) { kum#^^4G|  
for(int i=data.length/2;i>2;i/=2){ ]uj=:@  
for(int j=0;j insertSort(data,j,i); &3F}6W6A  
} OO dSKf8  
} 7?8wyk|x  
insertSort(data,0,1); 7;@ST`cC  
} DZ7 gcC  
}?F`t[+  
/** $ ,SF@BhO  
* @param data !Z!g:II /  
* @param j mR\`DltoV  
* @param i :F,O  
*/ PNF?;*`-{7  
private void insertSort(int[] data, int start, int inc) { SzwQOs*  
int temp; W7"{r)7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7|\@zQ h   
} `\`>0hlu  
} vu!d)Fy  
} n79QJl/  
p.I.iAk%G^  
} 9SlNq05G7  
@E( 7V(m/  
快速排序: {t"+ 3zy'  
Oa;X +  
package org.rut.util.algorithm.support; EN{]Qb06A  
!Cgx.   
import org.rut.util.algorithm.SortUtil; " 96yp4v@  
D(p\0V  
/** Jd\apBIf  
* @author treeroot 9)xUA;Qw?z  
* @since 2006-2-2 )VL96did  
* @version 1.0 !Fo*e  
*/  ~>O)  
public class QuickSort implements SortUtil.Sort{ 6qN~/TnHZ  
 ~ ~uAc_  
/* (non-Javadoc) gqXS~K9t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2!&&|Mh}  
*/ j'[m:/  
public void sort(int[] data) { ^ -FX  
quickSort(data,0,data.length-1); gBT2)2]  
} 7n]65].t  
private void quickSort(int[] data,int i,int j){ I;5R2" 3  
int pivotIndex=(i+j)/2; 8[r9HC  
file://swap g  %K>  
SortUtil.swap(data,pivotIndex,j); [7(-T?_  
vZ/6\Cz  
int k=partition(data,i-1,j,data[j]); }X GEX:1K  
SortUtil.swap(data,k,j); L9pvG(R%  
if((k-i)>1) quickSort(data,i,k-1); lis/`B\x  
if((j-k)>1) quickSort(data,k+1,j); WN(ymcdYB  
h)~=Dm  
}  Qk!;M |  
/** f\'{3I29  
* @param data !O\;Nua  
* @param i (feTk72XX  
* @param j '$4O!YI9@  
* @return G} eUL|S  
*/ 8WE{5#oi  
private int partition(int[] data, int l, int r,int pivot) { p!]6ll^  
do{ ~~/xR s  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9/+Nj/  
SortUtil.swap(data,l,r); :o:e,WKxb  
} $^u}a   
while(l SortUtil.swap(data,l,r); tiN?/  
return l; b:qY gg  
} ^[%%r3"$C  
V8eB$in  
} ZmOfEg|h\  
D\<y)kh  
改进后的快速排序: zF5uN:-s  
Oj<S.fi  
package org.rut.util.algorithm.support; %m:m}ziLQ  
zlR?,h-[3  
import org.rut.util.algorithm.SortUtil; l5l>d62  
I`z@2Z+pJ  
/** eEhr140  
* @author treeroot \!]Ua.e<  
* @since 2006-2-2 G=;k=oX(  
* @version 1.0 ?"?6,;F(4  
*/ .NtbL./=|  
public class ImprovedQuickSort implements SortUtil.Sort { ,=?{("+  
s2j['g5  
private static int MAX_STACK_SIZE=4096; ngj,x7t  
private static int THRESHOLD=10;  L4uFNM]  
/* (non-Javadoc) OL_{_K(w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bgmn2-  
*/ E}%hz*Q)(  
public void sort(int[] data) { 5[j`6l  
int[] stack=new int[MAX_STACK_SIZE]; qfcYE=  
P0 `Mdk371  
int top=-1; Y(.OF Q  
int pivot; AoA!q>  
int pivotIndex,l,r; Xf)|Pu  
099sN"kf  
stack[++top]=0; -,K!  
stack[++top]=data.length-1; q80S[au  
drs B/  
while(top>0){ R |KD&!~Z  
int j=stack[top--]; 9&RFO$WH  
int i=stack[top--]; 5NJ4  
*T0q|P~o%  
pivotIndex=(i+j)/2; k6=nO?$  
pivot=data[pivotIndex]; 'zh7_%  
]kG(G%r|M  
SortUtil.swap(data,pivotIndex,j); s,a}?W  
yV)la@c  
file://partition DcSnia62f  
l=i-1; @ P|LLG'  
r=j; OFje+S  
do{ k+1|I)z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?eV4 SH  
SortUtil.swap(data,l,r); +a^F\8H  
} Zo>]rKeV  
while(l SortUtil.swap(data,l,r); A.UUW  
SortUtil.swap(data,l,j); tGB@$UmfU  
U-n;xX0=  
if((l-i)>THRESHOLD){ AyMd:5;  
stack[++top]=i; ccd8O{G.M  
stack[++top]=l-1; 1:Si,d,wh  
} /c):}PJ^#7  
if((j-l)>THRESHOLD){ 4 Jx"A\5*G  
stack[++top]=l+1; PqM1a oyX  
stack[++top]=j;  *.)tG  
} Fs[aa#v4B  
u^029sH6j  
} ] }f9JNf$  
file://new InsertSort().sort(data); l7De6A"  
insertSort(data); Fd*8N8Pi  
} :x_'i_w  
/** TIvRhbu  
* @param data 'mV9{lj7E  
*/ %4HRW;IU  
private void insertSort(int[] data) { 'U'yC2BI n  
int temp; H4]Ul eU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zSb PW 6U  
} :kfp_o+J  
} | >z3E z  
} G9JAcO1  
T6ENtp  
} )?wJF<[_#  
?k(\ApVHj  
归并排序: ws^4?O  
sUPz/Z.h  
package org.rut.util.algorithm.support; @?"h !fyu  
-(K9s!C!.  
import org.rut.util.algorithm.SortUtil; =/\:>+p^.y  
QNDHOo>v  
/** 9(":,M(/o  
* @author treeroot {&Q9"C  
* @since 2006-2-2 <id}<H  
* @version 1.0 qY[xpm  
*/ LY-2sa#B$-  
public class MergeSort implements SortUtil.Sort{ ? R>h `  
fU!<HD h  
/* (non-Javadoc) <oz!H[!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zRPeNdX  
*/ *{+G=d  
public void sort(int[] data) { .CFa9"<  
int[] temp=new int[data.length]; Ao/ jt<  
mergeSort(data,temp,0,data.length-1); "?mJqA  
} 2U-3Q]/I}  
[LRLJ_~g5  
private void mergeSort(int[] data,int[] temp,int l,int r){ M`S0u~#tI  
int mid=(l+r)/2; '}Ri`  
if(l==r) return ; eilYA_FL.  
mergeSort(data,temp,l,mid); n[(Qr9  
mergeSort(data,temp,mid+1,r); +>4;Zd!@d  
for(int i=l;i<=r;i++){ } CfqG?)  
temp=data; IIyI=Wl pG  
} <I"S#M7-s  
int i1=l; a@R]X5[O  
int i2=mid+1; xZV1k~C  
for(int cur=l;cur<=r;cur++){ VU@9@%TN  
if(i1==mid+1) P\_`   
data[cur]=temp[i2++]; t:fFU1x  
else if(i2>r) Q?X>E3=U  
data[cur]=temp[i1++]; + T8B:  
else if(temp[i1] data[cur]=temp[i1++]; uw2hMt (N  
else xp Og8u5  
data[cur]=temp[i2++];  }K3x  
} >a}f{\Q  
} <vwkjCA`  
Onwp-!!.  
} ~,*b }O  
@'GGm#<   
改进后的归并排序: `:axzCrCfR  
\m1~jMz*>k  
package org.rut.util.algorithm.support; 2+X\}s1vN  
*E{2J:`  
import org.rut.util.algorithm.SortUtil; GQ |Mr{.;  
t#2(j1  
/** XU"~h64]  
* @author treeroot {GJ@psG*  
* @since 2006-2-2 k?'B*L_Mzv  
* @version 1.0 i'\T R|qd  
*/ u7=U^}#  
public class ImprovedMergeSort implements SortUtil.Sort { DY^;EZ!hb  
AFAAuFE"  
private static final int THRESHOLD = 10; QV\eMuNy  
` Jdb;  
/* a1@Y3M Q;i  
* (non-Javadoc) ooQQ-?"m  
* NC38fiH_N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0'IBN}  
*/ 73){K?R  
public void sort(int[] data) { v;)..X30  
int[] temp=new int[data.length]; @9"J|}  
mergeSort(data,temp,0,data.length-1); y:6; LZ9[  
} f!JS= N?3  
+>PX&F  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6 :~v4W!k  
int i, j, k;  #B\" '8#  
int mid = (l + r) / 2; AA7C$;Z15~  
if (l == r) pa# IJ  
return; ,{mCf ^  
if ((mid - l) >= THRESHOLD) ow]053:i  
mergeSort(data, temp, l, mid); [1u-Q%?#  
else Gn&4V}F  
insertSort(data, l, mid - l + 1); !@v7Zu43,  
if ((r - mid) > THRESHOLD) @mfEKU!  
mergeSort(data, temp, mid + 1, r); ^f(@gS}?  
else eow'K 821A  
insertSort(data, mid + 1, r - mid); )vSRHE  
5D'\b}*lJ}  
for (i = l; i <= mid; i++) { [W7CXZDd  
temp = data; d m`E!R_  
} :eCU/BC4  
for (j = 1; j <= r - mid; j++) { y~\oTJb  
temp[r - j + 1] = data[j + mid]; .p(T^ m2A*  
} is-7 j7;  
int a = temp[l]; *I0T{~  
int b = temp[r]; y_?Me]  
for (i = l, j = r, k = l; k <= r; k++) { z5 YWt*nm  
if (a < b) { -jiG7OL  
data[k] = temp[i++]; OtNd,U.dE  
a = temp; 1 9CK+;b  
} else { H/37)&$E(  
data[k] = temp[j--]; J_4!2v!6e  
b = temp[j]; [D4Es  
} >j QWn@  
} J7g8D{4  
} \QCJ4}\CS  
.yEBOMNZ  
/** 7yh /BZ1  
* @param data aSnF KB  
* @param l eYvWZJa4  
* @param i @ rc{SB  
*/ %B.yW`,X  
private void insertSort(int[] data, int start, int len) { %xyou:~0zs  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K9up:.{QQ  
} N=7pK&NHSG  
} k-^mIJo}  
} 5f 5f0|ok  
} 6g)G Y"49  
, JQp'e  
堆排序: V]db'qB\  
VB*oGG  
package org.rut.util.algorithm.support; 2V#>)R#k  
4v{o  
import org.rut.util.algorithm.SortUtil; Ob<{G"  
:Nz2z[W$  
/** =7m)sxj]w  
* @author treeroot Xx>X5Fy  
* @since 2006-2-2 V: TM]  
* @version 1.0 L bmawi^  
*/ JVSA&c%3  
public class HeapSort implements SortUtil.Sort{ 7x%R:^*4  
LHo3 Niy.  
/* (non-Javadoc) g0["^P1tV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :BV6y|J9O^  
*/ B e0ND2oo  
public void sort(int[] data) { [UWd W  
MaxHeap h=new MaxHeap(); 9j6QX ~,  
h.init(data); )O@]uY  
for(int i=0;i h.remove(); |}di&y@-JI  
System.arraycopy(h.queue,1,data,0,data.length); MjC_ (cs  
} z)r =+ -  
E;R n`oxk  
private static class MaxHeap{ /~$WUAh  
1`qMj0Y_  
void init(int[] data){ IvtJ0  
this.queue=new int[data.length+1]; _v> }_S  
for(int i=0;i queue[++size]=data; '|8} z4/g  
fixUp(size); GE%Z9#E  
} P 'od`  
} ud'-;W  
"4{LN}`  
private int size=0; ^Dn D>h@q  
F7EKoDt  
private int[] queue; [R^i F  
(Fhs"  
public int get() { WGZ9B^A  
return queue[1];  jYmR  
} n|RJ;d30Q  
sl`s_$J  
public void remove() { ~lsl@  
SortUtil.swap(queue,1,size--); g'n7T|h ~  
fixDown(1); Sp;G'*g  
} Vg>dI&O  
file://fixdown ic#`N0s?  
private void fixDown(int k) { VKG&Y_7N  
int j; 8h*Icf  
while ((j = k << 1) <= size) { 'R'*kxf  
if (j < size %26amp;%26amp; queue[j] j++; ($;77fPR  
if (queue[k]>queue[j]) file://不用交换 %,@e^3B  
break; zkuU5O  
SortUtil.swap(queue,j,k); deV  8  
k = j; ?kH8Lw~{5W  
} Z8@J`0x  
} xRzFlay8  
private void fixUp(int k) { 1q:2\d]  
while (k > 1) { 7'W%blg!V  
int j = k >> 1; {byBc G  
if (queue[j]>queue[k]) g+Sbl  
break; <oT^A|JFj  
SortUtil.swap(queue,j,k); %^4CSh  
k = j;  ~- _kM  
} J\:R|KaP<p  
} QSdHm  
%In A+5s`  
} Ybs\ES'?A  
4~Vx3gEV:  
} .ps-4eXF  
yW1)vD7  
SortUtil: 7XTkX"zKj  
8hOk{xs8  
package org.rut.util.algorithm; t(NI-UXBp  
g(qJN<R C/  
import org.rut.util.algorithm.support.BubbleSort; jHE}qE~>5  
import org.rut.util.algorithm.support.HeapSort; S >X:ZYYC  
import org.rut.util.algorithm.support.ImprovedMergeSort; =S+wCN  
import org.rut.util.algorithm.support.ImprovedQuickSort; e.7EU  
import org.rut.util.algorithm.support.InsertSort; IEsEdw]aZE  
import org.rut.util.algorithm.support.MergeSort; M/>7pZW  
import org.rut.util.algorithm.support.QuickSort; hKLCJ#T  
import org.rut.util.algorithm.support.SelectionSort; |,gc_G  
import org.rut.util.algorithm.support.ShellSort; 2Mc3|T4)U  
1PQ~jfGi  
/** nYR#  
* @author treeroot Wz49i9e+d  
* @since 2006-2-2 [q) 8N  
* @version 1.0 Ln')QN  
*/ Ui_8)z _  
public class SortUtil { |ef7bKU8  
public final static int INSERT = 1; eTI%^d|  
public final static int BUBBLE = 2; [!HEQ8 2g  
public final static int SELECTION = 3; "GMBjT8  
public final static int SHELL = 4; P;=n9hgHI  
public final static int QUICK = 5; B}Z63|/N  
public final static int IMPROVED_QUICK = 6; MDhRR*CBh  
public final static int MERGE = 7; Wu c S:8#|  
public final static int IMPROVED_MERGE = 8; ZM !CaR  
public final static int HEAP = 9; 9kN}c<o  
X0bN3N  
public static void sort(int[] data) { LtWP0@JA  
sort(data, IMPROVED_QUICK); S;3R S;  
} /YP{,#p  
private static String[] name={ sJ;g$TB  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vj'wm}/  
}; : UGZ+  
Bu<M\w?7Y  
private static Sort[] impl=new Sort[]{ ;4R$g5-4X  
new InsertSort(), ;f0I 8i,JN  
new BubbleSort(), "pi=$/RD9  
new SelectionSort(), ]HKQDc'  
new ShellSort(), c }Ft^Il  
new QuickSort(), OE_XCZ!5P  
new ImprovedQuickSort(), S!jTyY7e  
new MergeSort(), [')m|u~FS4  
new ImprovedMergeSort(), "CSsCA$/  
new HeapSort() A-Sv;/yD_  
}; L[oui,}_  
jaTh^L  
public static String toString(int algorithm){ 3oGt3 F{gZ  
return name[algorithm-1]; 'y;EhOwj,  
} gf#{k2r  
BgurzS4-  
public static void sort(int[] data, int algorithm) { d A@]!  
impl[algorithm-1].sort(data); gp};D  
} 8;b( 0^  
@Lpq~ 1eZB  
public static interface Sort { \\PjKAsh  
public void sort(int[] data); Q i,j+xBp  
} [w>$QR  
iV5yJF{ZH  
public static void swap(int[] data, int i, int j) { s:>Va GC  
int temp = data; B6u/mo<  
data = data[j]; 1->dMm}G[  
data[j] = temp; ,X[kt z  
} !O+) sbd<  
} "cE7 5  
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