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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。 JQT4N[rEE  
插入排序: t2.juoI(  
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package org.rut.util.algorithm.support; wAz,vq=x  
k?-S`o%Q  
import org.rut.util.algorithm.SortUtil; @:gl:mc  
/** ^[TOZXL`:  
* @author treeroot viV-e$s`.  
* @since 2006-2-2 P^4'|#~2T  
* @version 1.0 =|JKu'  
*/ l $Zs~@N  
public class InsertSort implements SortUtil.Sort{ J/7 u7_  
M?hFCt3Y  
/* (non-Javadoc) Sip_~]hM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NDo^B7 R-  
*/ -W^2*w   
public void sort(int[] data) { HA\A$>  
int temp; ?h&l tD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); % :tr  
} 2Q 3/-R  
} :BDviUC7Z  
} 6jtTT%>y  
AeQC:  
} }wL3mVz  
!F,s"  
冒泡排序: !Bncx`pl  
MM*-i=  
package org.rut.util.algorithm.support; ,O9`X6rh'  
u]#8 $M2  
import org.rut.util.algorithm.SortUtil; my=~"bw4  
-faw:  
/** ~ i'C/[P  
* @author treeroot Iq@IUFpc7~  
* @since 2006-2-2 44|03Ty  
* @version 1.0 6\mC$:F  
*/ ASM1Y]'Z  
public class BubbleSort implements SortUtil.Sort{ .lG +a!)  
-W6V,+of  
/* (non-Javadoc) hhj ,rcsi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J{x##p<F$  
*/ cuNq9y;[  
public void sort(int[] data) { TP^\e_k  
int temp; lmp R>@o"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ i59k"pNm  
if(data[j] SortUtil.swap(data,j,j-1); U)b &zZc;  
} T/ Ez*iQW  
} h%|9]5(=  
} 4Xr"d@2(  
} KZ @l/s  
nu(eLUU  
} E =  ^-Z  
n('VQ0b  
选择排序: ;<~j)8  
i&5!9m`Cw  
package org.rut.util.algorithm.support; 9Mut p4#  
 nFVbQa~  
import org.rut.util.algorithm.SortUtil; 14;Av{Xt  
'9Qd.q7s|b  
/** E.Pje@d  
* @author treeroot :e52hK1[T  
* @since 2006-2-2 -ca]Q|m8  
* @version 1.0 Wd1 IX^7C%  
*/ tUn&z?7bF  
public class SelectionSort implements SortUtil.Sort { N6f%>3%1|.  
R+x%r&L5F  
/* '> 4+WZ1w5  
* (non-Javadoc) 739l%u }<  
* 8Q)y%7 {6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l.yJA>\24I  
*/ Hv+:fr"  
public void sort(int[] data) { Q0_M-^~WT  
int temp;  !zF4 G,W  
for (int i = 0; i < data.length; i++) { UU-v;_oP  
int lowIndex = i; }v,W-gA  
for (int j = data.length - 1; j > i; j--) { yqC+P  
if (data[j] < data[lowIndex]) { WMRYT"J?N]  
lowIndex = j; 8UlB~fVg  
} YDdLDE  
} JO]`LF]  
SortUtil.swap(data,i,lowIndex); C-_w]2MM  
} EPR(i#xU  
} ~ rQ4n9G  
+q 4W0  
} U_.n=d~B  
k_-vT  
Shell排序: 56VE[G  
lu<Np9/5<  
package org.rut.util.algorithm.support; {8ld:ZP  
1Qrm"TFo  
import org.rut.util.algorithm.SortUtil; H@Kl  
zvWO4\  
/** zS,%msT^A  
* @author treeroot 44g`=o@  
* @since 2006-2-2 ^?81.b|qb  
* @version 1.0 !Q<8c =f  
*/ Fwg#d[:u  
public class ShellSort implements SortUtil.Sort{ mw2rSUI{  
ZY~zpC_  
/* (non-Javadoc) _D!M nTK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (mu{~@Hw  
*/ kJVM3F%  
public void sort(int[] data) { zlC^  
for(int i=data.length/2;i>2;i/=2){ la!1[VeL  
for(int j=0;j insertSort(data,j,i); v GulM<YY  
} N8u_=b{X  
} *S,v$ VX  
insertSort(data,0,1); ,S7~=S  
} :qt82tbn  
6:8EZ' y  
/** ?tW%"S^D  
* @param data 6kgCS{MZ  
* @param j 6~>^pkV  
* @param i  4Ub?*  
*/ ZA 99vO  
private void insertSort(int[] data, int start, int inc) { oX%PsS  
int temp; )< X=z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PxdJOtI"  
} ft*G*.0kO  
} rPrEEWS0)  
} iT)2 ?I6!  
WW,r9D:/  
} \" 5F;J  
!nZI? z;  
快速排序: z+5u/t  
bw<~R2[  
package org.rut.util.algorithm.support; 4n `[SN  
vV\/pu8  
import org.rut.util.algorithm.SortUtil; UU;Y sj  
W0p#Y h:{_  
/** s /k  
* @author treeroot ?eY chVq  
* @since 2006-2-2 #! K~_DL  
* @version 1.0 jn5=N[hd  
*/ "!w[U{  
public class QuickSort implements SortUtil.Sort{ 1+.y,}F6b  
kV]%Q3t  
/* (non-Javadoc) q/aL8V<"z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {HE.mHy  
*/ _KT]l./  
public void sort(int[] data) { ; HR\R  
quickSort(data,0,data.length-1);  A[wxa  
} noB}p4  
private void quickSort(int[] data,int i,int j){ _s*uF_: 3  
int pivotIndex=(i+j)/2; ;dpS@;v  
file://swap PHE;  
SortUtil.swap(data,pivotIndex,j); +9=p*3cnp  
3XYIbXnk  
int k=partition(data,i-1,j,data[j]); PLY-,Q&'  
SortUtil.swap(data,k,j); Xs#?~~"aC  
if((k-i)>1) quickSort(data,i,k-1); q]wn:%rX  
if((j-k)>1) quickSort(data,k+1,j); D7n&9Z  
QWIOim-  
} SIyS.!k>  
/** HY%6eUhj  
* @param data PN)TX~}  
* @param i $6]x,Ct  
* @param j m+G0<E%  
* @return Z_hBd['!  
*/ 2#Q"@  
private int partition(int[] data, int l, int r,int pivot) { l[!C-Tq  
do{ 8B% O%*5`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^.><t+tM  
SortUtil.swap(data,l,r); ` Q!FMv6Y^  
} =*U%j  
while(l SortUtil.swap(data,l,r); mF$jC:Tb  
return l; d/-0B<ts  
} @)!1#^(}%  
rE' %MiIK  
} 6:7:NIl:  
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改进后的快速排序: k6 h^  
njx\$,ruN  
package org.rut.util.algorithm.support; VN55!l'OV  
RQ$o'U9A  
import org.rut.util.algorithm.SortUtil; -`ys pE0?  
]#Z$jq{,  
/** L_CEY  
* @author treeroot tz \:r>3vI  
* @since 2006-2-2 z 2EI"'4\9  
* @version 1.0 c]/O^/  
*/ 5{x[EXE'  
public class ImprovedQuickSort implements SortUtil.Sort {  +T8XX@#  
#Z3I%bkw H  
private static int MAX_STACK_SIZE=4096; 9zM4D  
private static int THRESHOLD=10; @bVh?T0~F,  
/* (non-Javadoc) ";!1(xZr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hG0lR.:  
*/ 4OESsN$O  
public void sort(int[] data) { 8^ZM U{  
int[] stack=new int[MAX_STACK_SIZE]; ct4)faM  
/%@RO^P  
int top=-1; @ #O|  
int pivot; & ,gryBN  
int pivotIndex,l,r; +cplM5X  
L"zgBB?K6  
stack[++top]=0; e]y=]}A3{  
stack[++top]=data.length-1; 4mg 7f^[+  
36Fa9P FCc  
while(top>0){ %RR|QY*  
int j=stack[top--]; oqU#I~ -  
int i=stack[top--]; j2v[-N4 {J  
'/]Aaf@U8  
pivotIndex=(i+j)/2; d)J] Y=j  
pivot=data[pivotIndex]; 'Q;?_,`  
k=q%FlE  
SortUtil.swap(data,pivotIndex,j); `OpC-Z&  
C Wl95g  
file://partition 9#$V1(}?  
l=i-1; {/VL\AW5$  
r=j; jwE(]u  
do{ eNk!pI7g  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y0y;1N'KK  
SortUtil.swap(data,l,r); ]NhWhJ:  
} n;T  
while(l SortUtil.swap(data,l,r); n<(5B|~y  
SortUtil.swap(data,l,j); Kd|l\k!  
;>x1)|n5  
if((l-i)>THRESHOLD){ J hq5G"  
stack[++top]=i; /)OO)B-r  
stack[++top]=l-1; mDt",#g  
} QBT-J`Pz  
if((j-l)>THRESHOLD){ . R8W<  
stack[++top]=l+1; vkauX :M  
stack[++top]=j; 7-0twq   
} o9SfWErZ  
b}{9 :n/SC  
} l\l]9Z6%  
file://new InsertSort().sort(data); L08;z  
insertSort(data); 5~rY=0t  
} T!eh?^E  
/** U3iyuE  
* @param data ng)yCa_Ny  
*/ [g 68O*  
private void insertSort(int[] data) { K#pt8Q  
int temp; |k9j )Hg(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $TW+LWb   
} G&@RLht  
} vh{1u  
} QMfy^t+I  
*gMP_I  
} j`-y"6)  
MicVNs  
归并排序: KKTfxNxJn  
WiCM,wDi  
package org.rut.util.algorithm.support; .`8,$"`4)  
?g1 .-'  
import org.rut.util.algorithm.SortUtil; DB= cc  
#3ro?w  
/** _EBDv0s  
* @author treeroot lkJ#$Ik&  
* @since 2006-2-2 Vy"^]5  
* @version 1.0 G Z[5m[  
*/ x/q$RcDOm  
public class MergeSort implements SortUtil.Sort{ jc.Uh9Kc  
H;8]GE2n  
/* (non-Javadoc) ^RDXX+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 42[:s:  
*/ >qGR^yvb  
public void sort(int[] data) { 5oyMR_yl  
int[] temp=new int[data.length]; <cc0phr  
mergeSort(data,temp,0,data.length-1); F[giq 1#  
} e:D9;`C  
I }I/dh  
private void mergeSort(int[] data,int[] temp,int l,int r){ jWm BUHCb  
int mid=(l+r)/2; >$9yQ9&|  
if(l==r) return ; B{i;+[ase  
mergeSort(data,temp,l,mid); iSW73P;)  
mergeSort(data,temp,mid+1,r); |*| a~t  
for(int i=l;i<=r;i++){ ':>*=&  
temp=data; kEDZqUD  
} L|'ME| '  
int i1=l; 9&FV =}MO  
int i2=mid+1; E|#R0n*  
for(int cur=l;cur<=r;cur++){ QX3![;0F  
if(i1==mid+1) a;6\T*iJ!  
data[cur]=temp[i2++]; I%WK*AORM  
else if(i2>r) l\y*wr`  
data[cur]=temp[i1++]; H ?:#Ui(p  
else if(temp[i1] data[cur]=temp[i1++]; 8WQ%rN={8  
else Hjkgy%N  
data[cur]=temp[i2++]; u1Yp5jp^K  
} IYC#H}  
} 6df&B .gg  
;|%JvptwW%  
} c<x6_H6[8  
tB?S0;yXjd  
改进后的归并排序: :QSW^x  
uzA'D~)P  
package org.rut.util.algorithm.support; K:Go%3~,  
*F&&rsb  
import org.rut.util.algorithm.SortUtil; 2^lT!X@  
?pY!sG  
/** ==r|]~x  
* @author treeroot U2?gODh'  
* @since 2006-2-2 VO6y9X"  
* @version 1.0 /pN2Jst  
*/ Wm&f+{LO+K  
public class ImprovedMergeSort implements SortUtil.Sort { Ox'.sq4  
P!ICno6[e  
private static final int THRESHOLD = 10; . +?lID  
;z=C]kI6M  
/* \Y 4Z Q"0Q  
* (non-Javadoc) mwhn=y#]*  
* dz9-+C{m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <TuSU[]  
*/ ,p1]_D&  
public void sort(int[] data) { &4FdA|9T  
int[] temp=new int[data.length]; &3?yg61Ag  
mergeSort(data,temp,0,data.length-1); L` "UeNT  
} B.WkHY%/  
3?(p;  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?{IvA:   
int i, j, k; Z.(x|Q9  
int mid = (l + r) / 2; M.Ik%nN#K0  
if (l == r) ;^i,Q} b/  
return; RV(z>XM  
if ((mid - l) >= THRESHOLD) m~B=C>r}t  
mergeSort(data, temp, l, mid); DNe^_v)]|  
else E e&$9 )t  
insertSort(data, l, mid - l + 1); O waXG/z~  
if ((r - mid) > THRESHOLD) __c_JU  
mergeSort(data, temp, mid + 1, r); #OTsD+2Za=  
else o>tT!8rH  
insertSort(data, mid + 1, r - mid); .).<L`q  
xU"qB24]=  
for (i = l; i <= mid; i++) { DV" ri  
temp = data; yBiwYk6  
} k~dr;j  
for (j = 1; j <= r - mid; j++) { 4Pdk?vHK;  
temp[r - j + 1] = data[j + mid]; (Mh\!rMg  
} [40 YoVlfM  
int a = temp[l]; FCPRg^=<!~  
int b = temp[r]; 'b,D;'v  
for (i = l, j = r, k = l; k <= r; k++) { c y$$}  
if (a < b) { r&DK> H  
data[k] = temp[i++]; !:e qPpz  
a = temp; Qd?P[xm  
} else { 0^z$COCv  
data[k] = temp[j--]; [9^e u>)A  
b = temp[j]; jwox?]f+  
} , &SJ?XAs  
} G#v7-&Yl6  
} d`/{0:F  
9@B+$~:}7  
/** 2[hl^f^%,  
* @param data OpE+e4~IF  
* @param l 2ZeL  
* @param i kv b-=  
*/ 7 d5x4^EYE  
private void insertSort(int[] data, int start, int len) { /K<Nlxcm  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _C\b,D}p  
} Of=z!|l2  
} OHo0W)XUU  
} XN;eehB?aE  
} H!u:P?j@\  
8=9sIK2  
堆排序: 9g"H9)EZ^  
]Ox.6BKjDP  
package org.rut.util.algorithm.support; NM Ajt>t  
zOw]P6Gk  
import org.rut.util.algorithm.SortUtil; =qvU9p2o  
z wW9>Y  
/** Z}wAh|N-  
* @author treeroot VJaL$Wv)H  
* @since 2006-2-2 \zwb>^  
* @version 1.0 QPEv@laM  
*/ MC@cT^Z^  
public class HeapSort implements SortUtil.Sort{ 5EUkp6Y  
W| p?KJk)  
/* (non-Javadoc) Dr:}k*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~k 3r$e@  
*/ ![V- e  
public void sort(int[] data) { @:I/lg=Qd  
MaxHeap h=new MaxHeap(); M{QNpoM  
h.init(data); HPQ,tlp6j  
for(int i=0;i h.remove(); @\R)k(F  
System.arraycopy(h.queue,1,data,0,data.length); ^-_!:7TH]  
} (XH)1 -Z!  
zU%aobZ  
private static class MaxHeap{ `ijX9c  
\ck3y]a[  
void init(int[] data){ LzfLCGA^  
this.queue=new int[data.length+1]; =`U[{3A_  
for(int i=0;i queue[++size]=data; Cu]X &l  
fixUp(size); n'H\*9t  
} :\Z0^{  
} "e"`Or  
S}/CzQ  
private int size=0; S}E@*t2 h  
+}Pa/8ybJ  
private int[] queue;  2~)]E#9  
))N^)HR  
public int get() { lI 8"o>-~  
return queue[1]; mx yT==E  
} /Kvb$]F+!  
K&*FI (a  
public void remove() { 1jyWP#M#  
SortUtil.swap(queue,1,size--); r4sR5p]|  
fixDown(1); 8z-Td-R6  
} 83a Rq&(R  
file://fixdown 9maw+c!~  
private void fixDown(int k) { gyK"#-/_d  
int j; f2=s{0SX0  
while ((j = k << 1) <= size) { M: 6 cma5  
if (j < size %26amp;%26amp; queue[j] j++; L!Ro`6|7;  
if (queue[k]>queue[j]) file://不用交换 D-.>Dw:  
break; O\w%E@9Fh  
SortUtil.swap(queue,j,k); (LjY<dQO  
k = j; u+'=EGl  
} [F%\1xh  
} %YXC-E3@O  
private void fixUp(int k) { w~9gZ&hdp  
while (k > 1) { Z%Gvf~u  
int j = k >> 1; R&QT  'i  
if (queue[j]>queue[k]) 8/CGg_C1  
break; 9(_/jU4mc  
SortUtil.swap(queue,j,k); f`%k@\  
k = j; sw1XN?O  
} K^S#?T|[9  
} k[p  
F-Ea85/K@4  
} R Mm`<:H_  
T^'i+>F!w  
} ziOmmL(r  
p,+~dn;=  
SortUtil: l>ttxYBa<d  
Qi%A/~  
package org.rut.util.algorithm; z 4-wvn<*  
t^'1Ebg  
import org.rut.util.algorithm.support.BubbleSort; Uu(W62  
import org.rut.util.algorithm.support.HeapSort; y^ :x2P  
import org.rut.util.algorithm.support.ImprovedMergeSort; [{ pc1U-  
import org.rut.util.algorithm.support.ImprovedQuickSort; !>tXib]:  
import org.rut.util.algorithm.support.InsertSort; .^uu* S_  
import org.rut.util.algorithm.support.MergeSort; (<CLftQKg  
import org.rut.util.algorithm.support.QuickSort; ~(8A&!#,!  
import org.rut.util.algorithm.support.SelectionSort; /vhh2`  
import org.rut.util.algorithm.support.ShellSort; [Y*UCFhI0  
ubL Lhf  
/** .28*vkH%C=  
* @author treeroot QWoEo  
* @since 2006-2-2 L*Y}pO  
* @version 1.0 =[WccF  
*/ h^s}8y  
public class SortUtil { _,}Ye,(^=  
public final static int INSERT = 1; _i 8oWy1  
public final static int BUBBLE = 2; \rJk[Kec  
public final static int SELECTION = 3; ZjcJYtD  
public final static int SHELL = 4; S("bN{7nE  
public final static int QUICK = 5; & mWq'h  
public final static int IMPROVED_QUICK = 6; YS]RG/'  
public final static int MERGE = 7; DlP}Fp{  
public final static int IMPROVED_MERGE = 8; 4-m%[D |W  
public final static int HEAP = 9; 3FdoADe{{  
j% nd  
public static void sort(int[] data) { ~i \69q%  
sort(data, IMPROVED_QUICK); ^K"`k43{  
} ]?r8^LyZ4  
private static String[] name={ i8{jMe!Sa  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5&>(|Y~I  
}; 82<L07fB  
hYV{N7$U|  
private static Sort[] impl=new Sort[]{ Cfj*[i4  
new InsertSort(), `{/=i|6  
new BubbleSort(), z23KSPo  
new SelectionSort(), +k>v^sz  
new ShellSort(),  84{<]y  
new QuickSort(), N 8OPeY  
new ImprovedQuickSort(), Y /+ D4^ L  
new MergeSort(), p.%$  
new ImprovedMergeSort(), bHP-Z9riv  
new HeapSort() #0R;^#F/  
}; xv2;h4{<  
;V;4#  
public static String toString(int algorithm){ ?YS`?Rr  
return name[algorithm-1]; J kA~Ol  
} +bSv-i-  
n33SWE(  
public static void sort(int[] data, int algorithm) { {ys_uS{c*  
impl[algorithm-1].sort(data); kO.rgW82  
} ._yr7uY[M  
YZk&'w  
public static interface Sort { Ip4~qGJ  
public void sort(int[] data); LP\ Qwj{  
} T/3UF  
U*b SM8)L*  
public static void swap(int[] data, int i, int j) { HDaec`j  
int temp = data; L}9 @kjW  
data = data[j]; c.~|)^OXXO  
data[j] = temp; J+TYm%A;-  
} Qknd^%  
} i et|\4A  
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