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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。 U{q6_z|c  
插入排序: >r2m1}6g"  
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package org.rut.util.algorithm.support; 2fT't"gw  
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import org.rut.util.algorithm.SortUtil; &n|#jo(gS  
/** SXSH9;j  
* @author treeroot 7]_UZ)u  
* @since 2006-2-2 Ua#*kTF  
* @version 1.0 =#[_8)q  
*/ dJ"3F(X  
public class InsertSort implements SortUtil.Sort{ VjS %!P  
JUok@6  
/* (non-Javadoc) `zAV#   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l!ltgj  
*/ y@ J\h8_  
public void sort(int[] data) { 4xuL{z;\  
int temp; D9B?9Qt2[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L}ud+Wfox  
} p#HPWW"  
} mHE4Es0  
} Z~F% K~(  
L01R.3Z+  
} 5YUn{qtD  
K2$mz  
冒泡排序: @I2m4Q{O  
LyhLPU0^q  
package org.rut.util.algorithm.support; -@b&qi7&S  
MeW8aL r  
import org.rut.util.algorithm.SortUtil; DZ?>9W{  
!s/ij' T  
/** .r)WDR  
* @author treeroot f(=yC} si  
* @since 2006-2-2 O$J'BnPpw  
* @version 1.0 u|<Z};a  
*/ Ih!UL:Ckh  
public class BubbleSort implements SortUtil.Sort{ [&k[k)  
7 a !b}  
/* (non-Javadoc) l"p%]\tZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &STgj|t_  
*/ O?L _9L*  
public void sort(int[] data) { B< P H7  
int temp; d~tG#<^`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ M6vW}APH[n  
if(data[j] SortUtil.swap(data,j,j-1); j)Zi4<./  
} i >Hh_q;'  
} "Nj(0&  
} cpz}!D  
} _j-k*:  
)fP ,F(  
} 8X][TJG$  
V=Iau_  
选择排序: aD8cqVhM3&  
|jJC~/WR  
package org.rut.util.algorithm.support; 8K*X]Z h  
[Maon.t!l  
import org.rut.util.algorithm.SortUtil; "\Jq2vM  
+ 1\1Z@\M  
/** 4JKB6~Y  
* @author treeroot Vj_(55WQ  
* @since 2006-2-2 g3 6oEz~|  
* @version 1.0 :T" !6;  
*/  T/p}Us  
public class SelectionSort implements SortUtil.Sort { Wznz  
#s{>v$F  
/* &<R8'  
* (non-Javadoc) g2^7PtJg  
* 8N4W}YBs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?`_US7.@  
*/ + _rjA_  
public void sort(int[] data) { @y[Zr6\z  
int temp; Yr-a8aSTE5  
for (int i = 0; i < data.length; i++) { -`n>q^A7e  
int lowIndex = i; quN7'5ZC[  
for (int j = data.length - 1; j > i; j--) { Ij(S"P@  
if (data[j] < data[lowIndex]) { p<?~~7V  
lowIndex = j; 4,tMaQ  
} t }7hD  
} PwQW5,,h0  
SortUtil.swap(data,i,lowIndex); ,w,>pO'[  
} #R4Mv(BG  
} s+(%N8B  
7f8%WD)  
} BWFl8 !_X  
/p~"?9b[ i  
Shell排序: D{Y~ kV|  
w5gN8ZF3  
package org.rut.util.algorithm.support; A9qCaq{  
^+oi|y  
import org.rut.util.algorithm.SortUtil; oF,XSd  
m~1{~'  
/** TC?kuQI  
* @author treeroot ?{?mAb c  
* @since 2006-2-2 7'S/hV%  
* @version 1.0 R[LVx-e7'  
*/ w(8q qU+\  
public class ShellSort implements SortUtil.Sort{ 1 >jG*tr  
`I,A7b  
/* (non-Javadoc) O*d&H;;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xr&wV0O '  
*/ H/Cv?GJF  
public void sort(int[] data) { `J[(Dx'y=t  
for(int i=data.length/2;i>2;i/=2){ G]E$U]=9r:  
for(int j=0;j insertSort(data,j,i); V.)y7B  
} 2hEB?ZAQZ  
} (9*s:)zD-  
insertSort(data,0,1); .3?'+KZ,  
} +L;[-]E8  
\#1!qeF  
/** Dx$74~2e  
* @param data z}.!q{Q  
* @param j `)\_  
* @param i z@>z.d4  
*/ EJjTf:  
private void insertSort(int[] data, int start, int inc) { ;38W41d{  
int temp; :^0g}8$<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UBOCd[  
} OMd{rH  
} Q-F'-@`(C  
} aO.'(kk8  
;!, ]}2w*X  
} /O|!Sg{  
r(yJE1Wz  
快速排序: (M4~N)7<P5  
>C+0LF`U  
package org.rut.util.algorithm.support; *h1Zqb  
WGN[`D"  
import org.rut.util.algorithm.SortUtil; LeO ))  
Qc;`n ck  
/** WLiY:X(+|  
* @author treeroot 1,`-n5@J%n  
* @since 2006-2-2 rtvuAFiH  
* @version 1.0 SW (7!`  
*/ {.bLh 0  
public class QuickSort implements SortUtil.Sort{ 5 usfyY]z  
vY *p][$  
/* (non-Javadoc) r=n|MT^O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :>nk63V (  
*/ ioi0^aM  
public void sort(int[] data) { l<PGUm:_  
quickSort(data,0,data.length-1); Fly@"W4a  
} YP>VC(f   
private void quickSort(int[] data,int i,int j){ fpM 4q  
int pivotIndex=(i+j)/2; U(-9xp+  
file://swap daWmF  
SortUtil.swap(data,pivotIndex,j); |~8\{IcZ  
'97)c7E  
int k=partition(data,i-1,j,data[j]); LnZ*,>1 Z  
SortUtil.swap(data,k,j); ' :g8a=L  
if((k-i)>1) quickSort(data,i,k-1); >ly= O  
if((j-k)>1) quickSort(data,k+1,j); j:"+/5rV8  
D4s*J21)D  
} 7 tF1g=\  
/** [4 g5 {eX  
* @param data .2Q`. o)  
* @param i `PSr64h:D  
* @param j Y((z9-`  
* @return q\O'r[&V  
*/ E?y0UD[8J  
private int partition(int[] data, int l, int r,int pivot) { 3 C=nC  
do{ _8\Uukm  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cmt3ceCb  
SortUtil.swap(data,l,r); .Y_RI&B!L  
} tH 5f;mY,  
while(l SortUtil.swap(data,l,r); ijr*_=  
return l; [4kx59J3b  
} <%JdQ82?  
|?s%8c'w=  
} *{Wh- bc  
Mb\~WUWI  
改进后的快速排序: &w2.b:HF  
$MKx\qx}  
package org.rut.util.algorithm.support; 1(w0* `  
V?Lf& X?  
import org.rut.util.algorithm.SortUtil; o80pmy7@  
~Az20RrK)  
/** ETH`.~%  
* @author treeroot a&#Z=WK4  
* @since 2006-2-2 1)#<nk)I  
* @version 1.0 A&$!s)8z  
*/ H b]    
public class ImprovedQuickSort implements SortUtil.Sort { m4 E 6L  
hrZ~7 0r  
private static int MAX_STACK_SIZE=4096; <$UMMA  
private static int THRESHOLD=10; cIl^5eE^Pq  
/* (non-Javadoc) `!qWHm6I*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?-#w [J'6  
*/ O~{Zs\u9  
public void sort(int[] data) { 4 E 4o=Z|K  
int[] stack=new int[MAX_STACK_SIZE]; > m}.}g8  
7*'_&0   
int top=-1; UbC)X iO  
int pivot; 85 "DS-+e  
int pivotIndex,l,r; Bf1GHn Xv  
&wNN| fH  
stack[++top]=0; D: JGd$`  
stack[++top]=data.length-1; *X%`MN  
}-zx4<4BH  
while(top>0){ YH':cze  
int j=stack[top--]; !\ y_ik  
int i=stack[top--]; UT+\IzL  
Yr-,0${m  
pivotIndex=(i+j)/2; #%k5s?cP@  
pivot=data[pivotIndex]; T]Tz<w W(  
o"Ef>5N  
SortUtil.swap(data,pivotIndex,j); LrF'Hd=O  
?e3q0Lg3 |  
file://partition L}>9@?;GW  
l=i-1; 4DuZF -y  
r=j; En5Bsz !  
do{ m|24)%Vj;=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }5Y.N7F  
SortUtil.swap(data,l,r); &`@,mUi{Ac  
} 1(q!.lPc  
while(l SortUtil.swap(data,l,r); H1 \~T  
SortUtil.swap(data,l,j); C9gF2ii|?  
deHBY4@  
if((l-i)>THRESHOLD){ +]uy  
stack[++top]=i; !G\1$"T$  
stack[++top]=l-1; T%P 0M*  
} {:6VJ0s\  
if((j-l)>THRESHOLD){ px4Z  
stack[++top]=l+1; 5uDQ*nJ|  
stack[++top]=j; S`0@fieOf  
} O(&EnNm[2  
EHzU`('?[  
} Q=e?G300#L  
file://new InsertSort().sort(data); 71K6] ~<  
insertSort(data); O;H/15j:sK  
} -uv1$|  
/** ucoBeNsHx  
* @param data =b`>ggw#  
*/ (5km]`7z  
private void insertSort(int[] data) { #\`6ZHW  
int temp; Fi7pq2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,{'~J @  
} ^4s#nf:}  
} ?[XH`c,  
} -|f9~(t  
z w5EaY  
} q#OLb"bTr  
"<!|am(  
归并排序: OEB_LI'  
{\]SvoJnJ  
package org.rut.util.algorithm.support; X+&@$v1  
diTzolY7  
import org.rut.util.algorithm.SortUtil; L x9`y t6  
 .':SD{  
/** 5fVdtJk7  
* @author treeroot ?:U6MjlQ"{  
* @since 2006-2-2 3c9v~5og4  
* @version 1.0 &2QN^)q  
*/ rycscE4,  
public class MergeSort implements SortUtil.Sort{ 2a? d:21 B  
\BJnJk!%  
/* (non-Javadoc) D;Az>]>q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UKX'A)$  
*/ F+hsIsQ  
public void sort(int[] data) { bzUc;&WDz  
int[] temp=new int[data.length]; YJ3970c/M  
mergeSort(data,temp,0,data.length-1); T*YdGIFO  
} nH[@EL  
r43dnwX  
private void mergeSort(int[] data,int[] temp,int l,int r){ S;|%'Sn|j9  
int mid=(l+r)/2; }O o  
if(l==r) return ; i~K~Czmok+  
mergeSort(data,temp,l,mid); X_%78$N-a`  
mergeSort(data,temp,mid+1,r);  #lJF$  
for(int i=l;i<=r;i++){ P_b00",S  
temp=data; g1&GX(4[  
} {?5EOp~  
int i1=l; BJW;A>@Pj  
int i2=mid+1; Xc Pn  
for(int cur=l;cur<=r;cur++){ k)S7SbQ  
if(i1==mid+1) q=96Ci_a  
data[cur]=temp[i2++]; C}+(L3Z  
else if(i2>r) jriliEz;f  
data[cur]=temp[i1++]; B'~.>, fg  
else if(temp[i1] data[cur]=temp[i1++]; A;2?!i#f  
else F}sfk}rp  
data[cur]=temp[i2++]; [0J0<JnK  
} R \`,Q'3  
} \UNw43EL  
n'M}6XUw  
} [=LQ,e$r7  
mg#+%v  
改进后的归并排序: 2RM0ca _F  
2OK%eVba  
package org.rut.util.algorithm.support; @8/-^Rh*  
0|4XV{\qT$  
import org.rut.util.algorithm.SortUtil; )ZiJl5l@  
{H0B"i  
/**  wl9E  
* @author treeroot cT.1oaAM0  
* @since 2006-2-2 "J[Crm  
* @version 1.0 Gia_B6*Y[  
*/ oq0G@  
public class ImprovedMergeSort implements SortUtil.Sort { 0eUsvzz 15  
B}*xrPj  
private static final int THRESHOLD = 10; N2~DxVJ5cT  
L\n_q6n  
/* 6.K)uQgjmv  
* (non-Javadoc) OF DPtJwV  
* 1}V_:~7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /u#uC(Uwl  
*/ }dB01Jl '  
public void sort(int[] data) { s6KZV@1  
int[] temp=new int[data.length]; q$H'u[KQ06  
mergeSort(data,temp,0,data.length-1); iLS' 47  
} m\jp$  
\UK  9  
private void mergeSort(int[] data, int[] temp, int l, int r) { (( t8  
int i, j, k; BQw#PXp3  
int mid = (l + r) / 2; 9nd'"$  
if (l == r) z?E:s.4F  
return; UHR)]5Lt  
if ((mid - l) >= THRESHOLD) v)X1R/z5xw  
mergeSort(data, temp, l, mid); NCl={O9<j  
else .Olq_wuH  
insertSort(data, l, mid - l + 1); >eJk)qM  
if ((r - mid) > THRESHOLD) Zkxt>%20~  
mergeSort(data, temp, mid + 1, r); x2K.5q>  
else hEEbH@b  
insertSort(data, mid + 1, r - mid); * =r,V  
<L5[#V_  
for (i = l; i <= mid; i++) { %JiA,  
temp = data; Vl'|l)b4W  
} BBy/b c!  
for (j = 1; j <= r - mid; j++) { 8HTV"60hTs  
temp[r - j + 1] = data[j + mid]; oYqlN6n,=6  
} b]*9![_  
int a = temp[l]; <Ep P;  
int b = temp[r]; (u$Q  
for (i = l, j = r, k = l; k <= r; k++) { m2VF}% EIr  
if (a < b) { ~":?})  
data[k] = temp[i++]; "-^TA_XfI  
a = temp; L! Q&?xP  
} else { ZRcY; ?  
data[k] = temp[j--]; }vc C4 =t/  
b = temp[j]; KZ<zsHX8H  
} @gs Kb* ,  
} sFB; /*C  
} zf2]|]*xz  
\.Q"fd?a_D  
/** f3*u_LO  
* @param data WO_cT26Y  
* @param l &a-:ZA@  
* @param i 6)DYQ^4y  
*/ c< \:lhl  
private void insertSort(int[] data, int start, int len) { I_eYTy-a`1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); b/ur!2yr  
} Ku&0bXP  
} 6C) G  
} +h[$\_y  
} 5H?`a7q N  
Q0nSOTQ  
堆排序: ~f ){`ZJc  
Ok O;V6`  
package org.rut.util.algorithm.support; HtS:'~DYo  
1LcQ*d  
import org.rut.util.algorithm.SortUtil; ggX'`bK  
9<-AukK m  
/** tjO||]I  
* @author treeroot .F}ZP0THnZ  
* @since 2006-2-2 3Jk;+<  
* @version 1.0 ,/JrQWgD  
*/ xae}8E   
public class HeapSort implements SortUtil.Sort{ RI cA)I.  
zneK)C8&q3  
/* (non-Javadoc) P1H`NOC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [nYwJ  
*/ IXX^C}\,  
public void sort(int[] data) { H}JH339  
MaxHeap h=new MaxHeap(); Gl}=Q7  
h.init(data); B||^ sRMX  
for(int i=0;i h.remove(); :S?'6lOc(  
System.arraycopy(h.queue,1,data,0,data.length); y]M/oH  
} E jBEZL|_  
ZK_IK)g  
private static class MaxHeap{ )SUT+x(DU  
qFf'RgUtP  
void init(int[] data){ A-.jv  
this.queue=new int[data.length+1]; [4( TG<I  
for(int i=0;i queue[++size]=data; v@"xEf1n[  
fixUp(size);  3]<$;[Q  
} 0(-'L\<>x  
} Qh)@-r3  
<@5#  
private int size=0; jlzqa7  
Q)HVh[4  
private int[] queue; > NK?!!A_  
3vmLftZE}  
public int get() { $ShL^g@  
return queue[1]; -\AB!#fh  
} S1%{/w  
0qZ{:}`3  
public void remove() { t'0r4&\  
SortUtil.swap(queue,1,size--); U}7$:hO"dX  
fixDown(1); ma?569Z8~0  
} I+8m1 *  
file://fixdown QTK \"  
private void fixDown(int k) { >RE&>T^8  
int j; <k}>eGn  
while ((j = k << 1) <= size) { D OPOzh  
if (j < size %26amp;%26amp; queue[j] j++; t`H^! b  
if (queue[k]>queue[j]) file://不用交换 '_@=9 \<  
break; 5K{(V^88F  
SortUtil.swap(queue,j,k); kB"Sh_:m  
k = j; az0( 54M  
} !tHqF  
} 18V*Cu  
private void fixUp(int k) { esbxx##\  
while (k > 1) { +JBhw4et;.  
int j = k >> 1; *sB=Ys?  
if (queue[j]>queue[k]) qV8;;&8r  
break; eJ$?T7aUf  
SortUtil.swap(queue,j,k); z15(8Y@2]  
k = j; 8~\Fpz|Og  
} qs 52)$  
} Zdj~B1  
`H ^Nc\P#  
} DQH _@-q  
aztP`S$h  
} 4D9l Za}  
{HvR24#  
SortUtil: Af ^6  
bo\|mvB~  
package org.rut.util.algorithm; W&BwBp]K  
fx%'7/+  
import org.rut.util.algorithm.support.BubbleSort; ^fXNeBj  
import org.rut.util.algorithm.support.HeapSort; HSp*lHU  
import org.rut.util.algorithm.support.ImprovedMergeSort; RE!MX>sOEq  
import org.rut.util.algorithm.support.ImprovedQuickSort; H*EQ%BLW^,  
import org.rut.util.algorithm.support.InsertSort; DT n=WGm)  
import org.rut.util.algorithm.support.MergeSort; Y5cUOfYT  
import org.rut.util.algorithm.support.QuickSort; 4 lJ@qhV  
import org.rut.util.algorithm.support.SelectionSort; 7:{4'Wr@6|  
import org.rut.util.algorithm.support.ShellSort; pRUN [[L  
c{rX7+bN  
/** zO9|s}J8q  
* @author treeroot WO^sm Ck  
* @since 2006-2-2 ./J.OU1  
* @version 1.0 Y\sLwLLlG  
*/ ~}z p}Pt  
public class SortUtil { I?s)^'  
public final static int INSERT = 1; k$k (g  
public final static int BUBBLE = 2; qV9`  
public final static int SELECTION = 3; <74q]C  
public final static int SHELL = 4; =@gH$Q_1  
public final static int QUICK = 5; L'"20=sf  
public final static int IMPROVED_QUICK = 6; REnRpp$  
public final static int MERGE = 7; ^X"G~#v=q  
public final static int IMPROVED_MERGE = 8; dUOjPq97  
public final static int HEAP = 9; Q3wD6!'&m  
S)@R4{=e"V  
public static void sort(int[] data) { JS}W4 N  
sort(data, IMPROVED_QUICK); /M v\~vg$1  
} u)R>ozER  
private static String[] name={ 2frJSV?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )'DFDrY  
}; </:f-J%U/  
RyIr_:&-~  
private static Sort[] impl=new Sort[]{ h_* =_2|}  
new InsertSort(), V|#B=W  
new BubbleSort(), @ g~kp  
new SelectionSort(), b (;"p-^  
new ShellSort(), $axaI$bE  
new QuickSort(), zd>[uIOR  
new ImprovedQuickSort(), ] A9Vh  
new MergeSort(), .y+>-[j?B  
new ImprovedMergeSort(), MvL%*("4b  
new HeapSort() m\"M`o B  
}; r7JILk  
7ABHgw~?8r  
public static String toString(int algorithm){ Ud`V"X  
return name[algorithm-1]; :4]&R9J>o  
} g^}X3NUn  
*z` {$hc  
public static void sort(int[] data, int algorithm) { h8u(lIRHQ  
impl[algorithm-1].sort(data); <u u1e@P  
} -NiFO  
A{y3yH`#h  
public static interface Sort { 3vQ?vS|2  
public void sort(int[] data); g0cCw2S  
} UyD=x(li  
H,:Cg:E/^  
public static void swap(int[] data, int i, int j) { b;9v.MZ4>g  
int temp = data; 7{v0K"E{  
data = data[j]; 08yTTt76t  
data[j] = temp; R 4E0avt  
} .<rL2`C[c  
} kOFEH!9&  
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