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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。 "[.ne)/MC  
插入排序: Mt=R*M}D0  
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package org.rut.util.algorithm.support; #Z0-8<\  
(kY@7)d'e  
import org.rut.util.algorithm.SortUtil; 9DPb|+O-  
/** {Xv3:"E"O  
* @author treeroot ]=Pu\eE  
* @since 2006-2-2 ^e%k~B^  
* @version 1.0 x 'mF&^  
*/ O"iak  
public class InsertSort implements SortUtil.Sort{ >jKjh!`)!e  
_ Mn6L=  
/* (non-Javadoc) wPgDy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a ea0+,;  
*/ mr qaM2,(I  
public void sort(int[] data) { g>T  
int temp; d'OGVN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); USFg_sO  
} 87}(AO)  
} #N9d$[R*  
} N%u  
rs_h}+6"s  
} Pk:zfC?4  
1$(  
冒泡排序: $+jy/:]D  
|6*Va%LYO-  
package org.rut.util.algorithm.support; {=iyK/Uf  
9(OAKUQ  
import org.rut.util.algorithm.SortUtil; ju.OW`GM  
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/** vpV$$=Qwp  
* @author treeroot Qsji0ikG  
* @since 2006-2-2 5*1#jiq  
* @version 1.0 61>f(?s  
*/ %qi%$  
public class BubbleSort implements SortUtil.Sort{ '$6PTa  
&mdB\Y?^  
/* (non-Javadoc) s~Gw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) URQ@=W7  
*/ Z'ao[CG  
public void sort(int[] data) { 7_%2xewV|  
int temp; .)t (:)*b  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {2 EMz|&8  
if(data[j] SortUtil.swap(data,j,j-1); o3\,gzJ  
} n.ct]+L  
} Z /h|\SyJ  
} sUV>@UMnu  
} 0 Z8/R  
:q;R6-|.  
} }DHUTP2;yz  
*{nunb>WO  
选择排序: O4!9{  
--A&TV  
package org.rut.util.algorithm.support; BV1u,<T"  
&g {<HU?BT  
import org.rut.util.algorithm.SortUtil; H`gb}?9R  
 J `x}{K  
/** 3Y(9\}E@`  
* @author treeroot bBG/gQ  
* @since 2006-2-2 N6q5`Ry  
* @version 1.0 }H2#H7!H  
*/ l?<q YjI  
public class SelectionSort implements SortUtil.Sort { +`Fb_m)f  
~QCA -Yud  
/* RJwb@r<v  
* (non-Javadoc) B/G3T u uG  
* Z/c_kf[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T5q-" W6\  
*/ 8,y{q9O  
public void sort(int[] data) { m_$JWv\|\  
int temp; zb?kpd}r  
for (int i = 0; i < data.length; i++) { IX.sy  
int lowIndex = i; j-6v2MH  
for (int j = data.length - 1; j > i; j--) { UO1$UF! QC  
if (data[j] < data[lowIndex]) { k% NrL@z  
lowIndex = j; .jaZ|nN8`  
} >3!DOv   
} -O%[!&`  
SortUtil.swap(data,i,lowIndex); q}s K  
} cyBW0wV1  
} g<\>; }e  
XECikld>  
} s6/cL|Ex  
2m_H*1 HJ  
Shell排序: Rf?%Tv0\  
O{nC^`X  
package org.rut.util.algorithm.support; g}YToOs  
bOe<\Y$  
import org.rut.util.algorithm.SortUtil; :Fnzi0b  
BvQUn@ XE  
/** oSmjs  
* @author treeroot <"A#Eok|4  
* @since 2006-2-2 @7-D7  
* @version 1.0 NA\x<  
*/ +[_gyLN<5b  
public class ShellSort implements SortUtil.Sort{ Q K j1yG0i  
?R282l  
/* (non-Javadoc) { Hr>X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \6i 9q=  
*/ jceHK l  
public void sort(int[] data) { L\YZT| K(  
for(int i=data.length/2;i>2;i/=2){ %UBPoq  
for(int j=0;j insertSort(data,j,i); jzQ I>u  
} ;AltNGcM  
} [NjajA~z>F  
insertSort(data,0,1); WkP|4&-<  
} %_)b>C18 y  
 7BS/T  
/** <\p&jk?  
* @param data QY =QQG  
* @param j ^(J-dK  
* @param i Cc*|Zw  
*/ 8TI#7  
private void insertSort(int[] data, int start, int inc) { <ip)r;  
int temp; pj+tjF6Np  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4L!e=>as"1  
} [d\#[l_  
} }^Z< dbt  
} t:disL& !E  
y/H8+0sEk  
} gsi<S6DQ8  
A>5S]  
快速排序: [:BW+6  
0O_E\- =  
package org.rut.util.algorithm.support; F; 0Dp  
^&HI +M  
import org.rut.util.algorithm.SortUtil; X!m;uJZp  
I'P!,Y/>  
/** F\:{}782u  
* @author treeroot vRxL&8`&  
* @since 2006-2-2 a9L0f BRy  
* @version 1.0 ^,>}%1\  
*/ 9z5z  
public class QuickSort implements SortUtil.Sort{ +Z]y #=  
uQ-WTz|*  
/* (non-Javadoc) 27$\sG|g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N!Rt;Xm2@  
*/ > d^r">!,  
public void sort(int[] data) { RBPYG u'6B  
quickSort(data,0,data.length-1);  eMztjN  
} /1U,+g^O>  
private void quickSort(int[] data,int i,int j){ 1/!nV  
int pivotIndex=(i+j)/2; ddl3 fl#f  
file://swap W%w82@'  
SortUtil.swap(data,pivotIndex,j); aL{EkiR  
Xp.|.)Od  
int k=partition(data,i-1,j,data[j]); Y*"<@?n8?x  
SortUtil.swap(data,k,j); hY)YX,f=S  
if((k-i)>1) quickSort(data,i,k-1); \A~4\um  
if((j-k)>1) quickSort(data,k+1,j); jjNxatAN  
cS+?s=d  
} p {w}  
/** N{|[R   
* @param data &MBOAHhze  
* @param i G6f %/m`  
* @param j S".owe$\  
* @return YstXNN4  
*/ 3huzz<n3  
private int partition(int[] data, int l, int r,int pivot) { +HYN$>  
do{ Z5 w`-#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Tm0?[[3hC  
SortUtil.swap(data,l,r); A5`#Ot*3  
} l[:^TfB  
while(l SortUtil.swap(data,l,r); jD$;q7fB  
return l; 1i ?gvzrq  
}  j@s=ER  
&IxxDvP3k  
} "bL P3  
~y( ,EO  
改进后的快速排序: @fUX)zm>  
9*"[pt+tA  
package org.rut.util.algorithm.support; W5 M ]  
XT\Td}>  
import org.rut.util.algorithm.SortUtil; `1}HWLBX.  
# r2$ZCo3o  
/** %jYQ  
* @author treeroot 8.6no  
* @since 2006-2-2 -<u- +CbuT  
* @version 1.0 Z1 E` I89<  
*/ Q3'(f9 x  
public class ImprovedQuickSort implements SortUtil.Sort { KBp!zSl  
Z:W')Nd(  
private static int MAX_STACK_SIZE=4096; u66TrYStG  
private static int THRESHOLD=10; 56 /.*qa  
/* (non-Javadoc) N^)<)?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9CgXc5  
*/ r! cNc  
public void sort(int[] data) { rerUM*0  
int[] stack=new int[MAX_STACK_SIZE]; 30wYc &H  
 dfYYyE  
int top=-1; AycA :<  
int pivot; WoC\a^V  
int pivotIndex,l,r; 1)nM#@%](h  
k 2 mkOb  
stack[++top]=0; Q%_!xQP`  
stack[++top]=data.length-1; E,"b*l.  
1mvu3}ewx  
while(top>0){ w-{#6/<kI5  
int j=stack[top--]; E` :ZH  
int i=stack[top--]; !8H!Fj`|j  
5x93+DkO\  
pivotIndex=(i+j)/2; eUGm ns  
pivot=data[pivotIndex]; r? 6Z1  
8+@1wks  
SortUtil.swap(data,pivotIndex,j); 8,Q. t7v  
\rB/83[;u  
file://partition z/Mhu{ttL  
l=i-1; 9P,A t8V(  
r=j; 3(Hj7d7'}  
do{ \{Ox@   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )j)y5_m  
SortUtil.swap(data,l,r); VyBJIzs0  
} M9ter&  
while(l SortUtil.swap(data,l,r); sWqPw}/3>  
SortUtil.swap(data,l,j); tIgCF?  
a!SR"3 k  
if((l-i)>THRESHOLD){ KBUAdpU8  
stack[++top]=i; QBN=l\m+  
stack[++top]=l-1; 0e7O#-  
}  h;:Se  
if((j-l)>THRESHOLD){ @eAGN|C5  
stack[++top]=l+1; Q}k_#w  
stack[++top]=j; ~]m@k'n  
} dd @COP?  
+w_MSj#P  
} .$}Z:,aB  
file://new InsertSort().sort(data); 8 H$@Xts  
insertSort(data); .3g\[p   
} GSUOMy[M-  
/** .wt>.mUH  
* @param data XQ+-+CD  
*/ @h z0:ezg:  
private void insertSort(int[] data) { !Ed<xG/  
int temp; *cb D&R\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KqG$zC^N  
} ` i^`Q  
} c=jTs+h'  
} *n$m;yI  
)KTWLr;  
} i85+p2i7  
Sf.8Ibw  
归并排序: T{v<  
9 up* g  
package org.rut.util.algorithm.support; eF gb6dSh  
0YsN82IDD  
import org.rut.util.algorithm.SortUtil; Kr+Bt y  
A{n*NxKCX!  
/** 2C 8L\  
* @author treeroot :a^,Ei-&  
* @since 2006-2-2 I _Mqh4];  
* @version 1.0 zN 729wK  
*/ {) '" k6w  
public class MergeSort implements SortUtil.Sort{ aF4V|?+  
[ XY:MU e  
/* (non-Javadoc) r)Mx.`d!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3<1HqU  
*/ R;Ix<y{U  
public void sort(int[] data) { Hhce:E@K  
int[] temp=new int[data.length]; b$$L]$q2  
mergeSort(data,temp,0,data.length-1); 6r-<XNv)0  
}  zxynEdO  
xVwi }jtG|  
private void mergeSort(int[] data,int[] temp,int l,int r){ cvLcre% >A  
int mid=(l+r)/2; }1^ tK(Am  
if(l==r) return ; Kw5+4R(5  
mergeSort(data,temp,l,mid); bju,p"J1-E  
mergeSort(data,temp,mid+1,r); +XaO?F[c  
for(int i=l;i<=r;i++){ ]a Ma*fF  
temp=data; ~]t2?SqNm  
} yI)RG OV  
int i1=l; `- uZv  
int i2=mid+1; (^@;`8Dy8  
for(int cur=l;cur<=r;cur++){ 3\U,Kg  
if(i1==mid+1) ?U.&7yY  
data[cur]=temp[i2++]; Bbe/w#Z  
else if(i2>r) N4GIb 6  
data[cur]=temp[i1++]; uzn))/"  
else if(temp[i1] data[cur]=temp[i1++]; /EAQ.vxI  
else N6 }i>";_;  
data[cur]=temp[i2++]; kI1{>vYD  
} ?RjKP3P  
} %~v76;H<  
bMK'J  
} Wn9Mr2r!*,  
!?>p]0*<  
改进后的归并排序: fN? Lz%z3  
v.8S V]  
package org.rut.util.algorithm.support; .qU%SmQ^  
Pt)}HF|u  
import org.rut.util.algorithm.SortUtil; kHIQ/\3?Q  
mYs->mg1  
/** G QB^  
* @author treeroot HI`A;G]  
* @since 2006-2-2 ~Sem_U`G  
* @version 1.0 '' A[`,3  
*/ MAhPO!e5.  
public class ImprovedMergeSort implements SortUtil.Sort { $R#L@iL-  
8@C|exAD`  
private static final int THRESHOLD = 10; 5<GRi "7A@  
<?va) ou  
/* =rtA{g$)+  
* (non-Javadoc) a*wJcJTpV"  
* x jUH<LFxy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -"^WDs  
*/ OQb9ijLeK  
public void sort(int[] data) { O=?X%m #  
int[] temp=new int[data.length]; y.]]V"'2  
mergeSort(data,temp,0,data.length-1); (( IBaEq  
} RlPByG5K  
(/P&;?j  
private void mergeSort(int[] data, int[] temp, int l, int r) { ke6cZV5w  
int i, j, k; YV!V9   
int mid = (l + r) / 2; oX]1>#5UMg  
if (l == r) 25@j2K(  
return; L}S4Zz18  
if ((mid - l) >= THRESHOLD) O?J:+L(  
mergeSort(data, temp, l, mid); M{kh=b)V  
else .nY6[2am  
insertSort(data, l, mid - l + 1); g4qdm{BL  
if ((r - mid) > THRESHOLD) xwp?2,<  
mergeSort(data, temp, mid + 1, r); WatLAn+  
else 5 nIlG  
insertSort(data, mid + 1, r - mid); qO3BQ]UF  
^E?V+3mV  
for (i = l; i <= mid; i++) { 4 AmF^H  
temp = data; JY8"TQ$x  
} %[CM;|?B4  
for (j = 1; j <= r - mid; j++) { {EHG |  
temp[r - j + 1] = data[j + mid]; =X'7V}Q}  
} w3cK: C0  
int a = temp[l]; rxk{Li<9  
int b = temp[r]; \osQwGPV  
for (i = l, j = r, k = l; k <= r; k++) { :Ty*i  
if (a < b) { +&8Ud8Q  
data[k] = temp[i++]; :\;uJ5  
a = temp; ->9xw  
} else { "@? kxRn!  
data[k] = temp[j--]; cQ ;Ry!$  
b = temp[j]; x{o5Ha{  
} uiEA=*axp  
} 54DR.>O  
} /<(ik&%N  
2/q=l?  
/** ]<z(Rmn`Q  
* @param data ffd 3QQ  
* @param l ]c=1-Rl  
* @param i 0BD((oNg  
*/ (SVr>|Db  
private void insertSort(int[] data, int start, int len) { &+iW:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D)Rf  
} 0lh6b3tdP  
} yC*BOJS  
} 1)r_h(  
} U+M?<4J) "  
cyeDZ)  
堆排序: 0\^2HjsJ  
]Wm ?<7H  
package org.rut.util.algorithm.support; &nw ~gSe  
Ou,_l  
import org.rut.util.algorithm.SortUtil; ZTC1t_  
z6r/ w  
/** ,PxQ[CGg  
* @author treeroot wo9f99  
* @since 2006-2-2 [mvHa;-w  
* @version 1.0 3+uoK f[  
*/ XB 7^Ka  
public class HeapSort implements SortUtil.Sort{ uL AXN  
" CoR?[,x  
/* (non-Javadoc) ,]qX_`qF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .g?,:$`0D?  
*/ !_!b \  
public void sort(int[] data) { C>VZf,JE1  
MaxHeap h=new MaxHeap(); x}j41E}  
h.init(data); o@;_(knb  
for(int i=0;i h.remove(); Y &+/[ [  
System.arraycopy(h.queue,1,data,0,data.length); )B4c;O4t  
} DQnWLC"u  
!\4FIs&Qv  
private static class MaxHeap{ Pk_{{Z(1o  
=@  
void init(int[] data){ T^G<)IX`c  
this.queue=new int[data.length+1]; N\&;R$[9:  
for(int i=0;i queue[++size]=data; ,^C;1ph  
fixUp(size); xhS/X3<th  
} ENjD~S  
} uelTsn  
EIm\!'R]  
private int size=0; R?SHXJ%'  
cLP @0`^H  
private int[] queue; kn|l3+  
U8z"{  
public int get() { X#<Sv>c^  
return queue[1]; ^k##a-t<_>  
} Jz'+@q6h  
@'4D9A  
public void remove() { r!iuwE@  
SortUtil.swap(queue,1,size--); h!GixN?  
fixDown(1); ~C x2Q4E  
} Jj:4@p:  
file://fixdown +,>bpp1  
private void fixDown(int k) { D<6k AGE  
int j; #::vMnT  
while ((j = k << 1) <= size) { hZJqo +s  
if (j < size %26amp;%26amp; queue[j] j++; *X=-^\G  
if (queue[k]>queue[j]) file://不用交换 W7"sWaOhW  
break; !{;RtUPz*  
SortUtil.swap(queue,j,k); e[!>ezaIY  
k = j; eO G%6C%a  
} RVnYe='  
} o#6}?g.  
private void fixUp(int k) { 6P|neb}  
while (k > 1) { ]Jq e)o  
int j = k >> 1; sAlgp2-  
if (queue[j]>queue[k]) ztpb/9J9  
break; k]g\` gc  
SortUtil.swap(queue,j,k); {jG`l$$  
k = j; ,cEcMaJ  
} gK#w$s50  
} 8ipLq`)  
[Nc  Ok,  
} Pme?`YO$x  
9Z 4R!Q  
} :g";p.~=  
)`-]nMc  
SortUtil: $)V4Eu;  
-2_$zk*n  
package org.rut.util.algorithm; zPYa@0I  
?2;G_P+  
import org.rut.util.algorithm.support.BubbleSort; A?zW!'  
import org.rut.util.algorithm.support.HeapSort; dz 2d`=`3  
import org.rut.util.algorithm.support.ImprovedMergeSort; oMbCljUC  
import org.rut.util.algorithm.support.ImprovedQuickSort; rg~CF<  
import org.rut.util.algorithm.support.InsertSort; Xv:IbM> Qc  
import org.rut.util.algorithm.support.MergeSort; wBET.l'd  
import org.rut.util.algorithm.support.QuickSort; i|mA/ e3b  
import org.rut.util.algorithm.support.SelectionSort; nj$K4_  
import org.rut.util.algorithm.support.ShellSort; k_B^2=  
H"l'E9k.&p  
/** a{W-+t   
* @author treeroot qT4s* kqr  
* @since 2006-2-2 rge/jE,^~Z  
* @version 1.0 %*nZ,r  
*/ y]_DW6W  
public class SortUtil { p'*UM%@SIY  
public final static int INSERT = 1; 9iE66N>z  
public final static int BUBBLE = 2; :83" t-O8[  
public final static int SELECTION = 3; 7F4]EA ^  
public final static int SHELL = 4; E.9F~&DPJ<  
public final static int QUICK = 5; 8^lXM-G-  
public final static int IMPROVED_QUICK = 6; X c^~|%+  
public final static int MERGE = 7; 8h97~$7)  
public final static int IMPROVED_MERGE = 8; Jk*MxlA.b  
public final static int HEAP = 9; G w[&P%  
U9w*x/S wb  
public static void sort(int[] data) { Cn<x  
sort(data, IMPROVED_QUICK); ?x97 q3I+]  
} K~]jXo^M  
private static String[] name={ NL 37Y{b  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `upNP/,  
}; k s}o9[D3  
51vK>  
private static Sort[] impl=new Sort[]{ :y)'qv[  
new InsertSort(), PR+!CFi&  
new BubbleSort(), )-@EUN0E>5  
new SelectionSort(), *)<tyIHd  
new ShellSort(), 5z _)  
new QuickSort(), +,lD_{}_  
new ImprovedQuickSort(), LHb{9x  
new MergeSort(), U VT8TN-T  
new ImprovedMergeSort(), ! bp"pa9  
new HeapSort() ~CA+'e%~~  
}; g i)/iz`  
sq_:U_tJ  
public static String toString(int algorithm){ pP @#|T  
return name[algorithm-1]; d\v _!7  
} r!S iR(  
5h1j.t!  
public static void sort(int[] data, int algorithm) { w9%gaK;  
impl[algorithm-1].sort(data); WxFjpJt  
} 'SmdU1]4BD  
5 Jhl4p}w  
public static interface Sort { /Q!F/HY3ZS  
public void sort(int[] data); N+\*:$>zt6  
} abND#t  
[H6>]&  
public static void swap(int[] data, int i, int j) { S,H{\c  
int temp = data; /2:r}O  
data = data[j]; >BX_Bou  
data[j] = temp; 1 wG1\9S  
} llzl-2` /  
} vl<J-+|0C  
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