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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。 ?p^2Z6J'$  
插入排序: 0D [@u3W  
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package org.rut.util.algorithm.support; ]7/gJ>g,  
cf;Ht^M\  
import org.rut.util.algorithm.SortUtil; 46XN3r  
/** 3Sh+u>w  
* @author treeroot yYTVXs`fVj  
* @since 2006-2-2 GjQfi'vCk  
* @version 1.0 'gTmH[be  
*/ > <Z'D  
public class InsertSort implements SortUtil.Sort{ 49h0^;xlo:  
IgX4.]W5  
/* (non-Javadoc) ")`S0n5e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v'9m7$  
*/ b1^cD6sT+  
public void sort(int[] data) { oY3>UZ5\  
int temp; "JhimgwvY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Xr_pgW|  
} G[yI*/E;  
} XAD3Z?  
} vjlGXT`m  
v59nw]'  
} l)|lTOjb  
O|z%DkH[  
冒泡排序: C0m\SNR  
]+%=@mWYs  
package org.rut.util.algorithm.support; p:[LnL  
'mV:@].le  
import org.rut.util.algorithm.SortUtil; 4rp6 C/i  
+/cgw,  
/**  ;}4k{{K  
* @author treeroot ,"G\f1  
* @since 2006-2-2 uxDLDA$;  
* @version 1.0 jnBC;I[:  
*/ i21QJ6jPcI  
public class BubbleSort implements SortUtil.Sort{ 3M N  
dY'Y5Th~  
/* (non-Javadoc) =cp;Q,t'9L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - 9&g[  
*/ ;`jU_  
public void sort(int[] data) { c@OP5L>{  
int temp; K H}t:m+h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ hyu}}0:  
if(data[j] SortUtil.swap(data,j,j-1); /hci\-8N~  
} GOr}/y;  
} 'NjSu64W  
} /'&v4C^y>  
} 8=4^Lm  
- L`7+  
} Qj!d^8  
Qp+lJAY  
选择排序: sU%" azc  
'j#a%j@{  
package org.rut.util.algorithm.support; `A{'s %$?!  
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import org.rut.util.algorithm.SortUtil; UK:M:9  
P>W8V+l![  
/** `7_n}8NVC  
* @author treeroot #pa\ 2d|  
* @since 2006-2-2 v=MzI#0L  
* @version 1.0 |"\lL9CT  
*/ }AAbhr9d}  
public class SelectionSort implements SortUtil.Sort { Y_lCcu#OA  
M6x;BjrV  
/* yu_gNro L  
* (non-Javadoc) rgn|24x  
* !Bncx`pl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C~_q^fXJt  
*/ 3G(skphE  
public void sort(int[] data) { |wJ),h8/  
int temp; dw99FA6  
for (int i = 0; i < data.length; i++) { 44|03Ty  
int lowIndex = i; F]SIT\kBm  
for (int j = data.length - 1; j > i; j--) { w6v1 q:20  
if (data[j] < data[lowIndex]) { 't ;/,+:V  
lowIndex = j; :z124Zf  
} TP^\e_k  
} eo]a'J9(  
SortUtil.swap(data,i,lowIndex); G`WzJS*}v  
} Qv=Bq{N  
} bZnDd  
nu(eLUU  
} *fOIq88  
A1 b6Zt  
Shell排序: h!~|6nj  
9XY|V<}  
package org.rut.util.algorithm.support; '9Qd.q7s|b  
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import org.rut.util.algorithm.SortUtil; Q.uR<C6)v  
AF QnCl Of  
/** v@]6<e$  
* @author treeroot '> 4+WZ1w5  
* @since 2006-2-2 n *Q4G}p  
* @version 1.0 Mof)2Hbd:  
*/ 0n7HkDo  
public class ShellSort implements SortUtil.Sort{ RNl\`>Cz  
'1qAZkz  
/* (non-Javadoc) IcO9V<Q|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E)RI!0Ra  
*/ 18J.vcP  
public void sort(int[] data) { b^@`uDb6  
for(int i=data.length/2;i>2;i/=2){ upZYv~Sa  
for(int j=0;j insertSort(data,j,i); n,1NJKX  
} aJ% e'F[  
} U3(L.8(sA  
insertSort(data,0,1); e=YO.HT  
} `*|LI  
mJ7 `.  
/** 2OA8 R}  
* @param data B6^w{eXN  
* @param j VuP#b'g=|]  
* @param i !tm|A`<g#<  
*/ Ma n^\gkCi  
private void insertSort(int[] data, int start, int inc) { a-SB1-5jf  
int temp; qYQUr8{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iW1$!l>v  
}  m,xy4  
} #J'Z5)i|  
} 7r:nMPX  
P6.)P|n7=  
} @#G6z`,  
mkKRC;  
快速排序: Q-H =wJ4R  
gs^UR6 D,  
package org.rut.util.algorithm.support; UEx(~>  
:*^(OnIe  
import org.rut.util.algorithm.SortUtil; WW,r9D:/  
B' P,?`  
/** vr8J*36{  
* @author treeroot 9;m#>a@Y  
* @since 2006-2-2 7%~VOB  
* @version 1.0 Y2ah zB  
*/ Cf WK6>  
public class QuickSort implements SortUtil.Sort{ SF78 s:_!_  
o3(|FN  
/* (non-Javadoc) OsHkAI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hzk1LKsT#  
*/ #b<lt'gC  
public void sort(int[] data) { 'T #<OR  
quickSort(data,0,data.length-1); J~nJpUyP*  
} &</ @0  
private void quickSort(int[] data,int i,int j){ FW6E)df  
int pivotIndex=(i+j)/2; JXRmu~W~l  
file://swap yE!7`c.[u  
SortUtil.swap(data,pivotIndex,j); ^OGH5@"  
oPCIlH  
int k=partition(data,i-1,j,data[j]); 0t/z "  
SortUtil.swap(data,k,j); &Pn%zfmMN  
if((k-i)>1) quickSort(data,i,k-1); Is#v6:#^  
if((j-k)>1) quickSort(data,k+1,j); )f_"`FH0d  
~-o^eI4_  
} J OL Z2  
/** ^.><t+tM  
* @param data P(W\aLp  
* @param i lD+y, ";  
* @param j LRLhS<9  
* @return ` wsMybe#  
*/ )H=[NB6J8  
private int partition(int[] data, int l, int r,int pivot) { n"`SL<K1  
do{ c^q O@%s  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); P PIG?fK)  
SortUtil.swap(data,l,r); 6nhfI\q3wY  
} Z<m'he  
while(l SortUtil.swap(data,l,r); N]P*6sf-6  
return l; NVM2\fs  
} E6KBpQcd[  
MHzsxF|  
} P.2.Ge|  
*U[Q=w  
改进后的快速排序: ^.$r1/U  
SBB bniK-  
package org.rut.util.algorithm.support; B?zS_Ue  
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import org.rut.util.algorithm.SortUtil; ^9m]KEucd7  
HT;QepY3  
/** )]e d;V  
* @author treeroot ]ge^J3az$u  
* @since 2006-2-2 T_|fb)G+{  
* @version 1.0 aDJjVD  
*/ 2/<WWfX'  
public class ImprovedQuickSort implements SortUtil.Sort { J&0wl]w|O%  
=dw*B  
private static int MAX_STACK_SIZE=4096; "8Wc\YDh  
private static int THRESHOLD=10; 07WIa@Q  
/* (non-Javadoc) 5]O LV1Xt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ph!NY i,  
*/ @'| 6lG  
public void sort(int[] data) { \crb&EgID  
int[] stack=new int[MAX_STACK_SIZE]; Gpp}Jpj   
DD{@lM\vc  
int top=-1; >C d&K9H  
int pivot; { 'mY>s 7  
int pivotIndex,l,r; M97p.;;  
}n&JZ`8<s  
stack[++top]=0; {m*J95[   
stack[++top]=data.length-1; v lnUN  
5~rY=0t  
while(top>0){ Ognq*[om  
int j=stack[top--]; ng)yCa_Ny  
int i=stack[top--]; JdNPfkOF  
%!/liS  
pivotIndex=(i+j)/2; gJcL{]  
pivot=data[pivotIndex]; vWfef~}~  
aNf3 R;*  
SortUtil.swap(data,pivotIndex,j); \\pyu]z  
KKTfxNxJn  
file://partition T{J`t*Ym  
l=i-1; 9'L0Al~L  
r=j; N`GwL aF  
do{ @^jLYu|W  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H" g&  
SortUtil.swap(data,l,r); +o70: UF%  
} s 17gi,"X  
while(l SortUtil.swap(data,l,r); _=$!T;}lE  
SortUtil.swap(data,l,j);  l e/#J  
@x>2|`65Y  
if((l-i)>THRESHOLD){ [ :(M<u`y>  
stack[++top]=i; 0'2{[xF  
stack[++top]=l-1; i'LTKj  
} T k=3"y+u[  
if((j-l)>THRESHOLD){ ?4||L8j2^  
stack[++top]=l+1; uWT&`m_(2  
stack[++top]=j; 5'[X&r %#  
} kEDZqUD  
^\9G{}VY  
} gMMd=  
file://new InsertSort().sort(data); M|]1}8d?  
insertSort(data); <"P '"SC  
} H ?:#Ui(p  
/** oD2;Tdk  
* @param data KPcuGJ  
*/ _NW OSt  
private void insertSort(int[] data) { u(a&x|WY  
int temp; 7anpz%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6242qb  
} K:Go%3~,  
} >mltE$|  
} =5eDT~=2{U  
p&27|1pZm  
} 1g.9R@Kc$  
[\F,\  
归并排序: F<WX\q  
G{Q'N04RA  
package org.rut.util.algorithm.support; nU *fne?  
*[YN|  
import org.rut.util.algorithm.SortUtil; <TuSU[]  
8{<cqYCR  
/** c'qM$KN9G  
* @author treeroot /RmCMT  
* @since 2006-2-2 Z9^$jw]  
* @version 1.0 ?d)|vX3Uf  
*/ :_zKUv]  
public class MergeSort implements SortUtil.Sort{ /)|y+<E]}  
( %!R  
/* (non-Javadoc) k| o,gcU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $O-, :<HY  
*/ rT)R*3  
public void sort(int[] data) { g7F Z -  
int[] temp=new int[data.length]; xU"qB24]=  
mergeSort(data,temp,0,data.length-1); qm8RRDG  
} Y'h'8 \  
NR@Tj]`k  
private void mergeSort(int[] data,int[] temp,int l,int r){  %C:XzK-x  
int mid=(l+r)/2; /GaR&  
if(l==r) return ; Shd,{Z)-Tg  
mergeSort(data,temp,l,mid); |i8dI)b  
mergeSort(data,temp,mid+1,r); Dw3! ibg  
for(int i=l;i<=r;i++){ uy{KV"%"^g  
temp=data; w(-n1oSo  
} mY( _-[W  
int i1=l; =1qkoc~  
int i2=mid+1; '3->G/Pu  
for(int cur=l;cur<=r;cur++){ Hyg?as>}u  
if(i1==mid+1) Oa .%n9ec  
data[cur]=temp[i2++]; RI;RE/Z  
else if(i2>r) u{,^#I}  
data[cur]=temp[i1++]; ^S|^1  
else if(temp[i1] data[cur]=temp[i1++]; H!u:P?j@\  
else ) b8*>k  
data[cur]=temp[i2++]; ?_r"Fg;"  
} iz(+(M  
} .Dmvgi]  
Dn?L   
} c[$oR,2b13  
=I1@O9}+i  
改进后的归并排序: ='j  
AF-.Nwp   
package org.rut.util.algorithm.support; `39U I7  
Y# #J  
import org.rut.util.algorithm.SortUtil; o<4LL7$A!  
C*!_. <b  
/** ^-_!:7TH]  
* @author treeroot Q~kwUZ  
* @since 2006-2-2 2srz) xEe  
* @version 1.0 );[`rXH_  
*/ &.,OvVAo  
public class ImprovedMergeSort implements SortUtil.Sort { PhS"tOGtX  
?*;zS%93U9  
private static final int THRESHOLD = 10; Yy}aQF#M  
F t}tIP7  
/* N\?iU8w=  
* (non-Javadoc) ?8 F7BS4oQ  
* 2i)y'+s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2,\u Y}4  
*/ rSk $]E]Z  
public void sort(int[] data) { ?cvv!2B]T  
int[] temp=new int[data.length]; 9maw+c!~  
mergeSort(data,temp,0,data.length-1); a#1X)ot  
} S]>_o"|HV  
^cNP ?7g7  
private void mergeSort(int[] data, int[] temp, int l, int r) { u+'=EGl  
int i, j, k; CHz(wn  
int mid = (l + r) / 2; K02./ut-  
if (l == r) [Dhc9  
return; /dqKFxB1  
if ((mid - l) >= THRESHOLD) 0)B+ :  
mergeSort(data, temp, l, mid); 4)ISRR  
else +CkK4<dF  
insertSort(data, l, mid - l + 1); Du/s  
if ((r - mid) > THRESHOLD) Wac8x%J  
mergeSort(data, temp, mid + 1, r); :PLsA3[}  
else + |,CIl+  
insertSort(data, mid + 1, r - mid); H{BjxZ~)  
rcK*",>  
for (i = l; i <= mid; i++) { w-2]69$k  
temp = data; "`S61m_  
} 38#(ruv  
for (j = 1; j <= r - mid; j++) { 7mN?;X33  
temp[r - j + 1] = data[j + mid]; Rq*m x<HDX  
} S4_Y^   
int a = temp[l]; DXUI/C f  
int b = temp[r]; fTeo,N  
for (i = l, j = r, k = l; k <= r; k++) { 4q[r KNl  
if (a < b) { nRGH58  
data[k] = temp[i++]; ,]d}pJ}PX`  
a = temp; A1C@'9R*  
} else { YS]RG/'  
data[k] = temp[j--]; }S&{ &gh  
b = temp[j]; l^_X?L@  
} V)]&UbEL|  
} yE7pCgXt  
} [B4?Z-K%  
>M!>Hl/  
/** @dXf_2Tv=  
* @param data ':,LZ A8A  
* @param l m$^7sFD$  
* @param i }vi%pfrB  
*/ 2Zm*f2$xM  
private void insertSort(int[] data, int start, int len) { +)|2$$m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); OjCT%6hy;  
} *0U(nCT&m  
} yZ 9 *oDs  
} J kA~Ol  
} ]-6 G'i?  
`DwlS!0  
堆排序: \yxr@z1_b  
YZk&'w  
package org.rut.util.algorithm.support; eAqQ~)8^  
@6gz)  p  
import org.rut.util.algorithm.SortUtil; eQc!@*:8U  
N>~*Jp2;  
/** 56 )B/0=  
* @author treeroot ]D%[GO//!  
* @since 2006-2-2 +Lyh F2  
* @version 1.0 wOsr#t7  
*/ `A'*x]l  
public class HeapSort implements SortUtil.Sort{ s:_5p`w>  
$^l=#tV  
/* (non-Javadoc) -L[K1;Xv"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KGJB.<Be  
*/ s?2;u p*D  
public void sort(int[] data) { nQ+{1 C  
MaxHeap h=new MaxHeap(); F-X>| oK>z  
h.init(data); N@VD-}E  
for(int i=0;i h.remove(); E|6|m8  
System.arraycopy(h.queue,1,data,0,data.length); ux }DWrR  
} LU]~d< i99  
ZTun{Dw{  
private static class MaxHeap{ ZDb`]c4(  
]gEfm~YV  
void init(int[] data){ K{iYp4pU  
this.queue=new int[data.length+1]; NubD2  
for(int i=0;i queue[++size]=data; s.~SV"  
fixUp(size); O+yR+aXr'8  
} ,Q:dAe[ZsX  
} GZ e )QH  
J@5 OZFMZ  
private int size=0; )CB?gW  
FlZ]R  
private int[] queue; t EeMl =u  
9W8Dp?:  
public int get() { lN&GfPP6  
return queue[1]; VMHY.Rf  
} }a`LOBne  
g %Am[fb  
public void remove() { y5#_@  
SortUtil.swap(queue,1,size--); U".-C`4v  
fixDown(1); HqgH\  
} @Q^;qMy  
file://fixdown ?( '%QfT  
private void fixDown(int k) { ?{2-,M0  
int j; gu/Yc`S[  
while ((j = k << 1) <= size) { k (R4-"@  
if (j < size %26amp;%26amp; queue[j] j++; 1Y`MJ \9  
if (queue[k]>queue[j]) file://不用交换 pg<>Ow5,~l  
break; -"<f(  
SortUtil.swap(queue,j,k); G pd:k  
k = j; $X?V_K;9/  
} Nt'5}  
} n>Ei1  
private void fixUp(int k) { NplSkv  
while (k > 1) { BpCSf.zZ  
int j = k >> 1; n&fV3[m`2  
if (queue[j]>queue[k]) 7jPmI  
break; )t4C*+9<U  
SortUtil.swap(queue,j,k); H1]\B:  
k = j; ra&C|"~E  
} pI`Ke"  
} *G^]j )/  
x#^kv)  
} e=_hfOUC  
Z Kvh]  
} _=MWt_A '3  
l.BNe)1!22  
SortUtil: B_S3}g<~  
8n)Q^z+ K  
package org.rut.util.algorithm; D6t]E)FH  
9 2EMDKJ  
import org.rut.util.algorithm.support.BubbleSort; b$`O|S  
import org.rut.util.algorithm.support.HeapSort; &<V~s/n=6?  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ir'f((8:  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2XtQ"`)  
import org.rut.util.algorithm.support.InsertSort; Go|65Z\`7M  
import org.rut.util.algorithm.support.MergeSort; hG^23FiN  
import org.rut.util.algorithm.support.QuickSort; Jj " {r{  
import org.rut.util.algorithm.support.SelectionSort; tTgW^&B  
import org.rut.util.algorithm.support.ShellSort; zYL^e @  
.kIf1-(<U  
/** %vXQ Sz  
* @author treeroot rx/6x(3  
* @since 2006-2-2 UL%ihWq   
* @version 1.0 #"_MY-  
*/ je-s%kNlJ  
public class SortUtil { Q)>'fZ)  
public final static int INSERT = 1; : +Kesa:E  
public final static int BUBBLE = 2; B pT&vbY  
public final static int SELECTION = 3; jq)|Uq'6  
public final static int SHELL = 4; vknFtpx  
public final static int QUICK = 5; $b} +5  
public final static int IMPROVED_QUICK = 6; B}X#oA  
public final static int MERGE = 7; 7W"menw  
public final static int IMPROVED_MERGE = 8; B*IDx`^Y  
public final static int HEAP = 9; ;>N ~ ,Q  
w C"%b#(}  
public static void sort(int[] data) { }^7V^W  
sort(data, IMPROVED_QUICK); 27:x5g?  
} $nn5;11@gY  
private static String[] name={ <Tf;p8#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (rn x56I$  
}; -e>)yM `i  
V-jL`(JF%  
private static Sort[] impl=new Sort[]{ hT"K}d;X  
new InsertSort(), ;kBies>V  
new BubbleSort(), 8BDL{?Mu  
new SelectionSort(), m12 B:f  
new ShellSort(), m{c#cR  
new QuickSort(), tpONSRY  
new ImprovedQuickSort(), VKz<7K\/  
new MergeSort(), +`-a*U94  
new ImprovedMergeSort(), 'OCo1|iK~  
new HeapSort() @U@yIv  
}; <>_Wd AOuD  
Bq_P?Q+\  
public static String toString(int algorithm){ Z;D3lbqE  
return name[algorithm-1]; -^v}T/Kl#  
} p)xI5,b$9  
j*d~h$[k  
public static void sort(int[] data, int algorithm) { uFZB8+  
impl[algorithm-1].sort(data); EG4bFmcs  
} /}_c7+//  
3ohcHQ/a  
public static interface Sort { ^1=|(Z/  
public void sort(int[] data); shIi,!bZ  
} N'P,QiR,z<  
- oBas4J  
public static void swap(int[] data, int i, int j) { IQe[ CcM  
int temp = data; 'hw@l>1\9  
data = data[j]; :iB%JY Ad  
data[j] = temp; z/k~+-6O  
} _PUm Pom.  
} &xroms"S=  
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