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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。 5IE+M  
插入排序: Fb{`a[&  
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package org.rut.util.algorithm.support; p`<e~[]a  
z Jo#3  
import org.rut.util.algorithm.SortUtil; k"^t?\Q%vI  
/** 9>[.=  
* @author treeroot qvfAG 0p  
* @since 2006-2-2 {7![3`%7  
* @version 1.0 Uygw*+  
*/ <GT>s  
public class InsertSort implements SortUtil.Sort{ $G-N0LV  
zmL~]! ~&  
/* (non-Javadoc) rm)SfT<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )*TW\v`B  
*/ =6Kv`  
public void sort(int[] data) { n2y/zP>TC  
int temp; ghJ,s|lH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |<$<L`xoe  
} gM;)  
} b!^M}s6  
} =N@)CB7a  
@cS1w'=  
} JW%/^'  
yjOu]K:X  
冒泡排序: \\2k}TsB  
X8,7_D$  
package org.rut.util.algorithm.support; ,3J`ftCV  
)ZgER[  
import org.rut.util.algorithm.SortUtil; b5n]Gp  
_']%qd"%  
/** B.Zm$JZ:  
* @author treeroot d Ik8TJ  
* @since 2006-2-2 e0~sUVYf  
* @version 1.0 :p\(y  
*/ f- k|w%R@  
public class BubbleSort implements SortUtil.Sort{ cz7 CrK~5  
j5,^9'  
/* (non-Javadoc) U=&^H!LVY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?2?S[\@`0U  
*/ ##EB; Y  
public void sort(int[] data) { ~|r'2V*  
int temp; E VN-<=i^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `FzYvd"N  
if(data[j] SortUtil.swap(data,j,j-1); w PG1P'w;  
} &*G5J7%w  
}  /i-xX*  
} o[bE  
} !cEbz b  
rP^TN^bd|  
} PJxak3  
?Y? gzD  
选择排序: eK Z@ FEZ  
?Do^stq'4  
package org.rut.util.algorithm.support; kCaO\#ta  
V>b2b5QAH,  
import org.rut.util.algorithm.SortUtil; P+)qE6\  
F`Dg*O  
/** P"(z jG9-  
* @author treeroot ,:#,}w_HyO  
* @since 2006-2-2 @uI?  
* @version 1.0 7BL |x  
*/ w/b>awI  
public class SelectionSort implements SortUtil.Sort { Usa+b A  
Y7<zm}=(/  
/* _BZ1Vnv  
* (non-Javadoc) N$\ bg|v  
* q"gqO%Wb|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K0w<[CO  
*/ o!aLZ3#X  
public void sort(int[] data) { J>rka]*  
int temp; $> "J"IX  
for (int i = 0; i < data.length; i++) { [8>z#*B  
int lowIndex = i; ,:D=gQ@`  
for (int j = data.length - 1; j > i; j--) { ,Bisu:v6FW  
if (data[j] < data[lowIndex]) { D Irgq|8  
lowIndex = j; 8F#osN  
} R/^@cA  
} ?Bo?JMV  
SortUtil.swap(data,i,lowIndex); ojHhT\M`  
} K&=D-50%  
} ]UDd :2yt  
1EVfowIl  
} \+-zRR0  
# ;K,,ku x  
Shell排序: $}t=RW  
EXuLSzQwv  
package org.rut.util.algorithm.support; g>so R&*  
b"I~_CL|  
import org.rut.util.algorithm.SortUtil; 9A~>`.y  
8z Y)J#  
/** '"y}#h__T  
* @author treeroot B$rTwR"(-  
* @since 2006-2-2 +a%xyD:.?  
* @version 1.0 v? L  
*/ $9 K(F~/  
public class ShellSort implements SortUtil.Sort{ j~bAbOX12  
]*qU+&  
/* (non-Javadoc) 74+A+SK[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `ncNEHh7K  
*/ NUCiY\td  
public void sort(int[] data) { tJNIr5o  
for(int i=data.length/2;i>2;i/=2){ Gav"C{G  
for(int j=0;j insertSort(data,j,i); l3.  
} MaO"#{i  
} ;f:gX`"\  
insertSort(data,0,1); 7h%4]  
} "+)K |9T#  
4S|=/f  
/** Zb(E:~h\  
* @param data ldGojnS  
* @param j r`j Wp\z  
* @param i yEq#Dr  
*/ R_^/,^1  
private void insertSort(int[] data, int start, int inc) { .h4\{|  
int temp; rEdY>\'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LvcuZZ`1a  
} zvY+R\,in  
} $IVwA  
} !4WEk  
7\ypW$Ot  
} 0w %[  
j?6X1cMq  
快速排序: Ts9ktPlm  
`S3>3  
package org.rut.util.algorithm.support; nPN?kO=]  
d;7 uFh|o  
import org.rut.util.algorithm.SortUtil; c0_E_~  
n((vY.NDV  
/** \L # INP4~  
* @author treeroot t{dSX?<nt  
* @since 2006-2-2 2 rN ,D(  
* @version 1.0 -oyO+1V  
*/ !2tW$BP^  
public class QuickSort implements SortUtil.Sort{ 9MY7a=5E~  
;apzAF  
/* (non-Javadoc) OtTBErQNF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6/Fzco#N  
*/ ;`dh fcU  
public void sort(int[] data) { QAPu<rdJP  
quickSort(data,0,data.length-1); ~rD={&0  
} X^@ I].  
private void quickSort(int[] data,int i,int j){ yClx` S(  
int pivotIndex=(i+j)/2; =IU*}>#  
file://swap  d$W  
SortUtil.swap(data,pivotIndex,j); LD>\#q8a*  
5fJ[}~  
int k=partition(data,i-1,j,data[j]); yX!HZu;j  
SortUtil.swap(data,k,j); Dg HaOAdU  
if((k-i)>1) quickSort(data,i,k-1); Rp9fO?ZjHt  
if((j-k)>1) quickSort(data,k+1,j); Q`%R[#  
<#M`5X.  
} 4|?{VQ  
/** tK(g-u0N`(  
* @param data Y&HK1>M_  
* @param i 5O/i3m26  
* @param j 3+Qxg+<  
* @return 69K{+|  
*/ Z8#Gwyinx  
private int partition(int[] data, int l, int r,int pivot) { & fC!(Oy  
do{ sP@X g;]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LQYy;<K  
SortUtil.swap(data,l,r); )D&M2CUw"f  
} v``-F(i$  
while(l SortUtil.swap(data,l,r); x NK1h-t  
return l; [, RI-#n  
} %V`F!D<D  
;< jbLhHwD  
} }A=y=+4 j  
RyJ 1mAC  
改进后的快速排序: {66sB{P  
:~Q!SL N  
package org.rut.util.algorithm.support; 51C2u)HE  
g>rp@M  
import org.rut.util.algorithm.SortUtil; $''?HjB}T  
Uxfl_@lJ  
/** h^9"i3H  
* @author treeroot "gtHTqheH  
* @since 2006-2-2 }v9\F-0>Q  
* @version 1.0 "xmP6=1  
*/ .d;Iht,[  
public class ImprovedQuickSort implements SortUtil.Sort { =<r8fXWZ  
im} ?rY  
private static int MAX_STACK_SIZE=4096; `p b5*h6r!  
private static int THRESHOLD=10; %CwL:.|  
/* (non-Javadoc) do*}syQ`O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2kAx>R  
*/ PWRy7d  
public void sort(int[] data) { 99$ 5`R;  
int[] stack=new int[MAX_STACK_SIZE]; fj7|D'c  
{t"+ 3zy'  
int top=-1; vb 1@yQ  
int pivot; !Cgx.   
int pivotIndex,l,r; YjF|XPv+ l  
\!IMaB]  
stack[++top]=0; BqDKT  
stack[++top]=data.length-1; taGU  
5uq3\a  
while(top>0){ Uz cx6sw  
int j=stack[top--]; %75xr9yOP  
int i=stack[top--]; 73{'k K  
c_aZ{S  
pivotIndex=(i+j)/2; 7n]65].t  
pivot=data[pivotIndex]; du$|lxC  
Mb3}7@/[  
SortUtil.swap(data,pivotIndex,j); J q{7R  
-jgysBw+Xb  
file://partition lis/`B\x  
l=i-1; ^7;JC7qmN  
r=j; lo%;aK  
do{ Hf'G8vW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y\N|<+G+  
SortUtil.swap(data,l,r); e%8|<g+n6  
} pa}*E  
while(l SortUtil.swap(data,l,r); hcVJBK  
SortUtil.swap(data,l,j); :o:e,WKxb  
^F?&|clM/  
if((l-i)>THRESHOLD){ b jAnaya  
stack[++top]=i; pg]BsJN  
stack[++top]=l-1; R52I= a5,*  
} | mu+9   
if((j-l)>THRESHOLD){ dU\%Cq-G)  
stack[++top]=l+1; 0]D0{6x8  
stack[++top]=j; )54%HM_$k  
} 7~#:>OjW  
Ax!+P\\2~  
} Y#!h9F  
file://new InsertSort().sort(data); ngj,x7t  
insertSort(data); .>z][2oz  
} olLfko4$*V  
/** uEc<}pV  
* @param data JCAq8=zM  
*/ Z|RY2P>E  
private void insertSort(int[] data) { 42>Ge>#F  
int temp; [AV4m   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]*7Y~dO  
} r J KZ)N{  
} PRNoqi3sY  
} p4p@^@<>X  
ie-vqLc  
} yV)la@c  
sB69R:U;  
归并排序: !mXxAo  
r! Ay :r  
package org.rut.util.algorithm.support; \.mI  
h*ZC*eV>  
import org.rut.util.algorithm.SortUtil; g/13~UM\  
[pVamE  
/** R *F l8   
* @author treeroot ^&g=u5 d0  
* @since 2006-2-2 yoAfc  
* @version 1.0 =)|-?\[w  
*/ Pz$R(TV  
public class MergeSort implements SortUtil.Sort{ Fd*8N8Pi  
%e&9.  
/* (non-Javadoc) %v2R.?F8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +**!@uY  
*/ NWxUn.Gy9  
public void sort(int[] data) { UwC=1g U  
int[] temp=new int[data.length]; 1#1 riM -  
mergeSort(data,temp,0,data.length-1); ,]b~t0|B  
} ws^4?O  
i*CZV|t US  
private void mergeSort(int[] data,int[] temp,int l,int r){ )Wb0u0)_  
int mid=(l+r)/2; -\#0]F:-  
if(l==r) return ; "Ky; a?Y  
mergeSort(data,temp,l,mid); SM@QUAXO  
mergeSort(data,temp,mid+1,r); KF4PJi;*  
for(int i=l;i<=r;i++){ &IlU|4`R%  
temp=data; /> 4"~q)  
} p<:!)kt  
int i1=l; ;j2vHU#q-  
int i2=mid+1; 'fPdpnJ<  
for(int cur=l;cur<=r;cur++){ M`S0u~#tI  
if(i1==mid+1) MTUn3;c/  
data[cur]=temp[i2++]; \(%Y%?dy  
else if(i2>r) 2<}NB?f`N  
data[cur]=temp[i1++]; )aX,%yK  
else if(temp[i1] data[cur]=temp[i1++]; "le>_Ze_>|  
else 9Vf1Xz  
data[cur]=temp[i2++]; cp o-.  
} A2|Ud_  
} 2=_g f  
i E CrI3s  
} <vwkjCA`  
c*@G_rb  
改进后的归并排序: (64yg  
H9CS*|q6r  
package org.rut.util.algorithm.support; 'e6WDC1Am(  
FHV-BuH5  
import org.rut.util.algorithm.SortUtil; Q~T$N  
l<N}!lG|  
/** 4rrSb*  
* @author treeroot 0tU.(  
* @since 2006-2-2 \<g*8?yFs  
* @version 1.0 []D@Q+1  
*/ 9:M` j  
public class ImprovedMergeSort implements SortUtil.Sort { Q1+dCCY#F  
7nuU^wc  
private static final int THRESHOLD = 10; AF%@VLf  
Qubp9C#r  
/* w4gg@aO  
* (non-Javadoc) C 9t4#"  
* Hhh0T>gi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uS^Ipxe\  
*/ /3{b%0Aa  
public void sort(int[] data) { Gn&4V}F  
int[] temp=new int[data.length]; mWvl 38  
mergeSort(data,temp,0,data.length-1); B $mX3B+a  
} F|!){=   
\P6$mh\T  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?5 {>;#0Z  
int i, j, k; @/31IOIV]`  
int mid = (l + r) / 2; aca=yDs2  
if (l == r) 4H/fP]u  
return; gdQvp=v]  
if ((mid - l) >= THRESHOLD) UNBH  
mergeSort(data, temp, l, mid); ojri~erJE?  
else ,U}8(D~:  
insertSort(data, l, mid - l + 1); ~WSC6Bh@9  
if ((r - mid) > THRESHOLD) al/~  
mergeSort(data, temp, mid + 1, r); szHUHW~;J  
else x& S>Mr  
insertSort(data, mid + 1, r - mid); jk@]d5  
Eh+lL tZ  
for (i = l; i <= mid; i++) { dq2v[? *R  
temp = data; e]QkZg2?Yn  
} aH_&=/-Tz  
for (j = 1; j <= r - mid; j++) { ?jbam! A  
temp[r - j + 1] = data[j + mid]; F+GQl  
} C;` fOCz^  
int a = temp[l]; )8;'fE[p}  
int b = temp[r]; N@}U;x}  
for (i = l, j = r, k = l; k <= r; k++) { @,]v'l!u  
if (a < b) { j^gF~ Wz^  
data[k] = temp[i++]; ; OsN^   
a = temp; LPC7Bdjz  
} else { u8*0r{kOH  
data[k] = temp[j--]; =LRUasF  
b = temp[j]; zv41Yv!x}  
} vd~O:=)4  
} IX}l)t[:(  
} deNU[  
rTH@PDk>)  
/** x;+,lP  
* @param data f5N~K>  
* @param l m5S/T\,X  
* @param i 3]'3{@{} H  
*/ |l9AgwDg  
private void insertSort(int[] data, int start, int len) { =xgW$c/yB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {1o=/&  
} IAfYlS#<yD  
} @:Ns`+ W*  
} JOMZ&c^  
} _Qv4;a  
B7#;tCf  
堆排序:  *q^'%'  
eu# ||  
package org.rut.util.algorithm.support; vjHbg#0%  
4ngiad6bR  
import org.rut.util.algorithm.SortUtil; M?,;TJ7Gd  
IflpM]  
/** ( nBsf1l  
* @author treeroot eA!aUu  
* @since 2006-2-2 (k[<>$hL*  
* @version 1.0 cJt#8P  
*/ U9JqZ!  
public class HeapSort implements SortUtil.Sort{ pRC#DHcHh  
LE7o[<>  
/* (non-Javadoc) lU\|F5O@#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a(m#GES  
*/ I} j! !  
public void sort(int[] data) { 4-m}W;igu  
MaxHeap h=new MaxHeap(); lY6U$*9c  
h.init(data); UPbG_ #"wZ  
for(int i=0;i h.remove(); )&*&ZL0  
System.arraycopy(h.queue,1,data,0,data.length); V482V#BP  
} aUd6 33  
l!`m}$  
private static class MaxHeap{ @.%ll n  
A0'Yfuie  
void init(int[] data){ U7{, *  
this.queue=new int[data.length+1]; /ZAEvdO*P  
for(int i=0;i queue[++size]=data; #KiRH* giU  
fixUp(size); b6#V0bDXHD  
} `AYHCn  
} 9D&ocV3QV  
<}|+2f233+  
private int size=0; (Y-7B  
IuRKj8J)o  
private int[] queue; :g][99  
(;!&RZ  
public int get() { T@X!vCjf6  
return queue[1]; H=B8'N  
} ).xQ~A\.  
<x,$ODso  
public void remove() { 1;SWfKU?.  
SortUtil.swap(queue,1,size--); !)ee{CwNc  
fixDown(1); e5MX5 T^  
} >i=mw5`D]  
file://fixdown )bqO}_B  
private void fixDown(int k) { xaejG/'iK  
int j; z~Gi/Ln  
while ((j = k << 1) <= size) { ,LG6py&aT  
if (j < size %26amp;%26amp; queue[j] j++; K o,O!T.  
if (queue[k]>queue[j]) file://不用交换 IEHAPt'  
break; k|1/gd5  
SortUtil.swap(queue,j,k); *V5R[   
k = j; q0$}MB6  
} wQDKv'zU1  
} s-Bpd#G>/  
private void fixUp(int k) { |R DPx6!V  
while (k > 1) { ;ZB[g78%R%  
int j = k >> 1; 2B5Z0<  
if (queue[j]>queue[k]) =fEn h'KE  
break; Kh}#At^C8e  
SortUtil.swap(queue,j,k); ~gmj /PQ0  
k = j; a//<S?d$:  
} j$siCsF  
} dFK/  
?(4 =:o  
} Fep#Pw1  
Az{Z=:(0  
} z\{y[3-  
{+!m]-s  
SortUtil: pq*W;6(-  
|-%[Z  
package org.rut.util.algorithm; V`m'r+ Y  
".Luc 7  
import org.rut.util.algorithm.support.BubbleSort; { owK~  
import org.rut.util.algorithm.support.HeapSort; s,)Z8H  
import org.rut.util.algorithm.support.ImprovedMergeSort; qlNK }  
import org.rut.util.algorithm.support.ImprovedQuickSort; xp.~i*!`  
import org.rut.util.algorithm.support.InsertSort; k|'{$/ n  
import org.rut.util.algorithm.support.MergeSort; 6=0"3%jn@  
import org.rut.util.algorithm.support.QuickSort; <!Ed ND=  
import org.rut.util.algorithm.support.SelectionSort; _?]bd-E  
import org.rut.util.algorithm.support.ShellSort; j|c  
Ko|nF-r_  
/** Bq3"l%hI  
* @author treeroot O4dJ> O  
* @since 2006-2-2 _o`+c wc  
* @version 1.0 SvLI%>B=9  
*/ #?DwOUw  
public class SortUtil { 2+ m%f"  
public final static int INSERT = 1; $aDAD4mmm  
public final static int BUBBLE = 2; L3/m}AH,  
public final static int SELECTION = 3; dZ K /v  
public final static int SHELL = 4; ?S9? ?y/  
public final static int QUICK = 5; wc`UcGO  
public final static int IMPROVED_QUICK = 6; eg!s[1[_  
public final static int MERGE = 7; ? Dm={S6  
public final static int IMPROVED_MERGE = 8; P|*c7+q  
public final static int HEAP = 9; 7uQiP&v  
uj;tmK>;  
public static void sort(int[] data) { ^h\& l{e  
sort(data, IMPROVED_QUICK); d 5jZ?  
} =z#6mSx|W  
private static String[] name={ &y_Ya%Z3*e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /6",#B}%b  
}; >%LZ|*U  
@ >_v/U'  
private static Sort[] impl=new Sort[]{ !1(*D*31  
new InsertSort(), a8nqzuI  
new BubbleSort(), j.or:nF  
new SelectionSort(), v_^>*Vm*  
new ShellSort(), ~j3O0s<gK  
new QuickSort(), uIh68UM  
new ImprovedQuickSort(), ,Y9bXC8+dU  
new MergeSort(), mk.1jx ?l  
new ImprovedMergeSort(), o rBB5JJ  
new HeapSort() FJ-X~^  
}; TP3KT)  
F^4mO|  
public static String toString(int algorithm){ gi {rqM  
return name[algorithm-1]; 1?I_fA}  
} 0MpZdJ  
*{y({J  
public static void sort(int[] data, int algorithm) { O1+OE!w  
impl[algorithm-1].sort(data);  N$ oQK(  
} !%X~`&9  
eYtP396C|  
public static interface Sort { ^5E:hW [*  
public void sort(int[] data); l(A)Gd5>  
} KpX1GrIn3  
pYN.tD FO  
public static void swap(int[] data, int i, int j) { *RYok{w  
int temp = data; VEsIhjQ  
data = data[j]; c,j[ix  
data[j] = temp; m+|yk.md  
} PPAcEXsIu  
} <#nt?Xn  
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