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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。 GiBq1U-Q  
插入排序: dy u brIG  
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package org.rut.util.algorithm.support; UQz8":#V  
7M: 0%n$  
import org.rut.util.algorithm.SortUtil; O2{_:B>K[  
/** %^RlE@l9  
* @author treeroot * wN+Ak q  
* @since 2006-2-2 hB:R8Y^?H  
* @version 1.0 S<+_yB?  
*/ F' ZLN]"{  
public class InsertSort implements SortUtil.Sort{ (E)/' sEb  
]zVe%Wa  
/* (non-Javadoc) -W>zON|l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T8YqCT"EA<  
*/ DSix(bs9  
public void sort(int[] data) { #m9V) 1"wB  
int temp; & Qghm o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }/G~"&N[  
} nZQZ!Vfj  
} d; @Kz^  
} xtU)3I=F%  
;3'}(_n  
} "/hs@4{u9  
a(Z" }m  
冒泡排序: $y=sT({VVe  
R4}G@&Q  
package org.rut.util.algorithm.support; L~ V 63K  
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import org.rut.util.algorithm.SortUtil; R|t.wawCo  
Mz]LFM  
/** 1`_Mc ]  
* @author treeroot [ sz#*IJ  
* @since 2006-2-2 : M0LAN  
* @version 1.0 .(;k]U P  
*/ {b/60xl?  
public class BubbleSort implements SortUtil.Sort{ $if(`8  
)'%L#  
/* (non-Javadoc) a|?CC/Ra  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) . 36'=K  
*/ OY~5o&Oa  
public void sort(int[] data) { ?vf{v  
int temp; WP^%[?S2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ UDyvTfh1X  
if(data[j] SortUtil.swap(data,j,j-1); y9\s[}c_  
} 1aYO:ZPy  
} :'GTCo$3  
} TdD-# |5  
} !0Xes0gK0  
N!RyncJ  
} wrsETB c  
\"Sqr(~_  
选择排序: 5 +(YcV("  
v-G(bw3  
package org.rut.util.algorithm.support; X+ iA"B  
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import org.rut.util.algorithm.SortUtil; g;]2'Rj  
aDza"Ln  
/** 94nvh:n  
* @author treeroot m !;mEBL{  
* @since 2006-2-2 @ n;WVG  
* @version 1.0 ~n"V0!:'4  
*/ a3Es7R+S  
public class SelectionSort implements SortUtil.Sort { 0]>p|m9K^<  
mq'q@@:c  
/* HdWghxz?)  
* (non-Javadoc) =#%e'\)a  
* aKCCFHq t!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =K8`[iH  
*/ Q1eiU Y6  
public void sort(int[] data) { |7%$+g  
int temp; Y!&dj95y  
for (int i = 0; i < data.length; i++) { >47,Hq:2  
int lowIndex = i; uX}M0W  
for (int j = data.length - 1; j > i; j--) { Y]8l]l 1  
if (data[j] < data[lowIndex]) { {2Gp+&  
lowIndex = j; kV6>O C&^  
} {AIZ,  
} Bfw>2  
SortUtil.swap(data,i,lowIndex); P!bm$h*3?  
} "{{xH*ij'  
}  mH?^3T  
%_tL}m{?  
} e1&c_"TOih  
5+3Z?|b  
Shell排序: ?wwY8e?S  
RFA5vCG  
package org.rut.util.algorithm.support; k_}ICKzw1  
zO)9(%LS  
import org.rut.util.algorithm.SortUtil; #On1Q:d  
L**!$k"{5  
/** I[t)V*L9  
* @author treeroot 6dq U4  
* @since 2006-2-2 )sNtw Sl^  
* @version 1.0 U?|s/U  
*/ (Z`Y   
public class ShellSort implements SortUtil.Sort{ +oQ@E<)H  
 ITbl%q  
/* (non-Javadoc) pM VeUK?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?6j@EJ<2q  
*/ $g|g}>Sc  
public void sort(int[] data) { QT%&vq  
for(int i=data.length/2;i>2;i/=2){ &]z2=\^e  
for(int j=0;j insertSort(data,j,i); |u;5|i  
} V<nzThM\  
} Zqam Iq  
insertSort(data,0,1); R!$j_H  
} _TX.}167;-  
/Zv}u  
/** VCc4nn#  
* @param data _'j>xK  
* @param j AH#e>kU^  
* @param i +%gh?  
*/ 4a)qn?<z  
private void insertSort(int[] data, int start, int inc) { t9P` nfY  
int temp; @ $(4;ar  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @&M $`b ^  
} hZzsZQ`  
} .2Rh_ful  
} i1G}m Yz_  
(4c<0<"$  
} UJ6WrO5#kB  
NWNgh/9?  
快速排序: W BiBtU  
m&ZdtB|  
package org.rut.util.algorithm.support; 3{$c b"5  
`pcjOM8u  
import org.rut.util.algorithm.SortUtil; 5Vvy:<.la  
,:z@Ji  
/** y5R6/*;N.  
* @author treeroot uNx3us-  
* @since 2006-2-2 ^Y'>3o21f  
* @version 1.0 o} %  
*/ 6s|C:1](b  
public class QuickSort implements SortUtil.Sort{ +p43d:[  
Vx#xq#wK  
/* (non-Javadoc) TUk1h\.q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e@Mm4&f[p  
*/ j f^fj-  
public void sort(int[] data) { !Sw7!h.ut  
quickSort(data,0,data.length-1); f'%}{l: ss  
} \j K?R 6  
private void quickSort(int[] data,int i,int j){ cCj}{=U  
int pivotIndex=(i+j)/2; 3cOXtDV YT  
file://swap *YDx6\><  
SortUtil.swap(data,pivotIndex,j); v1)jZ.:  
:W'1Q2  
int k=partition(data,i-1,j,data[j]); w93yhV?  
SortUtil.swap(data,k,j); DsFrA]  
if((k-i)>1) quickSort(data,i,k-1); ^|gN?:fA}  
if((j-k)>1) quickSort(data,k+1,j); =CqLZ$10  
da 2BQ;  
} !A<?nz Uv  
/** g\jdR_/  
* @param data !J6k\$r  
* @param i Crey}A/N  
* @param j 4z$ eT  
* @return b9\=NdyCY  
*/ (oTx*GP>Y  
private int partition(int[] data, int l, int r,int pivot) { u|w[ b9^r  
do{ d ch(HB}[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cPtP?)38.  
SortUtil.swap(data,l,r); #U6Wv1H{Lp  
} OY@/18D<>  
while(l SortUtil.swap(data,l,r); f:HRrKf9  
return l; ;xj^*b  
} 02=eE|Y@  
duwZe+  
} $%!]tNGS  
NVOY,g=3X  
改进后的快速排序: Q04N  
g/T`4"p[H  
package org.rut.util.algorithm.support; ,D#~%kq~  
t(s']r  
import org.rut.util.algorithm.SortUtil; 5$9j&&R  
rgOB0[  
/** 2p'qp/  
* @author treeroot a Fl(K\  
* @since 2006-2-2 EnfSVG8kB8  
* @version 1.0 2P]rJ  
*/ fw-LZ][  
public class ImprovedQuickSort implements SortUtil.Sort { Pw+cpM 8<  
7DT9\BT  
private static int MAX_STACK_SIZE=4096; o{ U= f6  
private static int THRESHOLD=10; cvAkP2  
/* (non-Javadoc) s3t{freM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |~uCLf>  
*/ L-$GQGk{  
public void sort(int[] data) { n!f @JHL  
int[] stack=new int[MAX_STACK_SIZE]; ^IC|3sr   
GV%ibqOpQj  
int top=-1; :x16N|z  
int pivot; |*8 J.H*r  
int pivotIndex,l,r; `+i<:,z-gs  
U${dWxC  
stack[++top]=0; &:Raf5G-E  
stack[++top]=data.length-1; .PF~8@1ju  
m:K/ )v*  
while(top>0){ SVeL c  
int j=stack[top--]; zvSfW# *  
int i=stack[top--]; E*k=8$Y  
G0<m3 Up  
pivotIndex=(i+j)/2; ek3/`]V:  
pivot=data[pivotIndex]; 'S&5zwrH  
539[,jH  
SortUtil.swap(data,pivotIndex,j); ga!t:O@w  
6&h,eQ!  
file://partition QDLtilf :  
l=i-1; bY]aADv\  
r=j; A.(Z0,S-i  
do{ >a]{q^0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X $J  
SortUtil.swap(data,l,r); %m{h1UQQ +  
} WG1x:,-  
while(l SortUtil.swap(data,l,r); !WAbO(l  
SortUtil.swap(data,l,j); lKwIlp  
3M/kfy  
if((l-i)>THRESHOLD){ $S3C_..  
stack[++top]=i; _AK-AY  
stack[++top]=l-1; ofRe4 *\j  
} UDGVq S!,E  
if((j-l)>THRESHOLD){ 5Vf#(r f  
stack[++top]=l+1; na>UFw7>*  
stack[++top]=j; NouT~K`'  
} 1[mX_ }K  
v-g2k_ o|  
} `Y8 F}%i[  
file://new InsertSort().sort(data); q,kdr)-  
insertSort(data); yA =#Ji  
} rr9N(AoxW  
/** KN_3]-+B  
* @param data U H `=  
*/ a$"3T  
private void insertSort(int[] data) {  w8$8P  
int temp; 05$CIS>!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z GA1  
} 8,=,'gFO  
} #sN]6  
} #8rLB(  
>pUR>?t"  
} CKy' 8I9  
=`99ez+y  
归并排序: FL9 Dz4  
2I>X]r.S!1  
package org.rut.util.algorithm.support; sYYNT*  
"! m6U#^  
import org.rut.util.algorithm.SortUtil; H $XO] \  
9x23## s  
/** o4\\q66K  
* @author treeroot yIA- +# r[  
* @since 2006-2-2 lE'2\kxI?  
* @version 1.0 /*i[MB  
*/ KZ>cfv-&a  
public class MergeSort implements SortUtil.Sort{ u{o3  
RGf&KV/  
/* (non-Javadoc) RG0kOw0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J>TNyVaoQ  
*/ U]ynnw4  
public void sort(int[] data) { }&F|u0@b  
int[] temp=new int[data.length]; mA@FJK_  
mergeSort(data,temp,0,data.length-1); yX0n yhq  
} +<a-;e{  
`1{Y9JdQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ gE\&[;)DB  
int mid=(l+r)/2; `-/-(v+ i  
if(l==r) return ; of659~EIW  
mergeSort(data,temp,l,mid); Uc^eIa@  
mergeSort(data,temp,mid+1,r); )%dxfwd6  
for(int i=l;i<=r;i++){ j 4!$[h  
temp=data; x8 _f/2&  
} J;|a)Nw  
int i1=l; %68'+qz  
int i2=mid+1; I() =Ufs5z  
for(int cur=l;cur<=r;cur++){ L`NY^  
if(i1==mid+1) aS=-9P;v  
data[cur]=temp[i2++]; z{`K_s%5  
else if(i2>r) . |%n"{  
data[cur]=temp[i1++]; HCfme<'  
else if(temp[i1] data[cur]=temp[i1++]; %D1 |0v8}  
else > ~:Md  
data[cur]=temp[i2++]; 4Oo{\&(  
} z?dd5.k  
} fG9 ;7KG  
2*Zk^h=  
} G%iT L"6  
)Fon;/p  
改进后的归并排序: =gNPS 0H  
n&OM~Vs  
package org.rut.util.algorithm.support; }@x!r=O)I  
mX 3p   
import org.rut.util.algorithm.SortUtil; d^MRu#]  
'b)qP|  
/** _NefzZWUJ  
* @author treeroot :aQ.:b(n  
* @since 2006-2-2 mC2K &'[  
* @version 1.0 ~(nc<M[  
*/ =' uePM")  
public class ImprovedMergeSort implements SortUtil.Sort { 7-:R{&3Lm:  
.V4-  
private static final int THRESHOLD = 10; (Zg'])  
50_[n$tqE  
/* xt_:R~/[  
* (non-Javadoc) `+z^#3l  
* A]Bf&+V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jvc:)I1NE7  
*/ wU6sU]P  
public void sort(int[] data) { m< H{@ZgN(  
int[] temp=new int[data.length]; n,U?]mr  
mergeSort(data,temp,0,data.length-1); Hvb8+"?~  
} KpA1Ac)T  
pHT]2e#  
private void mergeSort(int[] data, int[] temp, int l, int r) { sYjhQN=Y*  
int i, j, k; jr,N+K(@T  
int mid = (l + r) / 2; jc!m; U t  
if (l == r) '2GnAws^  
return; nv0\On7wd  
if ((mid - l) >= THRESHOLD) /~M H]Gh  
mergeSort(data, temp, l, mid); o^XDG^35`  
else &rGB58  
insertSort(data, l, mid - l + 1); KL9k9|!p  
if ((r - mid) > THRESHOLD) fIl;qGz85  
mergeSort(data, temp, mid + 1, r); WQ{[q" O  
else `78Bv>[A  
insertSort(data, mid + 1, r - mid); ~)^'5^  
8N%nG( 0  
for (i = l; i <= mid; i++) { |BbzRis  
temp = data; dvZH~mF  
} (:aU"5M  
for (j = 1; j <= r - mid; j++) { AtewC Yo  
temp[r - j + 1] = data[j + mid];  D|)a7_  
} OvAhp&k  
int a = temp[l]; +$|fUn{  
int b = temp[r]; @/F61Ut  
for (i = l, j = r, k = l; k <= r; k++) { K>dB{w#gS  
if (a < b) { om`T/@_,  
data[k] = temp[i++]; D"rbQXR7$  
a = temp; #MKM.T,\t  
} else { &\1n=y  
data[k] = temp[j--]; Jy5sZ }t[  
b = temp[j]; u<Y#J,p`e  
}  =*&[K^  
} "$XX4w M  
} sxsb)a  
zw[' hqW  
/** f. "\~  
* @param data xNzGp5H  
* @param l ];Z6=9n  
* @param i kk %32(By  
*/ CJ* D  
private void insertSort(int[] data, int start, int len) { _Z23lF 9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8LbwEKl  
} )\|+G5#`  
} VGmvfhf#"  
} 6|zhqb|s  
} 5BJ E  
-~mgct5  
堆排序: )V\@N*L`ik  
TWzLJ63*  
package org.rut.util.algorithm.support; 1h&`mqY)L.  
IdQ./@?  
import org.rut.util.algorithm.SortUtil; X/yq<_ g  
&}r"Z?f)  
/** fes s6=k  
* @author treeroot Ut;`6t  
* @since 2006-2-2 Iko]c_W0  
* @version 1.0 VG);om7`PD  
*/ |5bLV^mv]i  
public class HeapSort implements SortUtil.Sort{ N-gYamlQ  
u.|Z3=?VG  
/* (non-Javadoc) F!]Sr'UA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ot2o=^Ng  
*/ } o%^ Mu B  
public void sort(int[] data) {  Y !?'[t  
MaxHeap h=new MaxHeap(); W6&vyOc  
h.init(data); _!nsEG VV  
for(int i=0;i h.remove(); q`VL i  
System.arraycopy(h.queue,1,data,0,data.length); WwDM^}e  
} 3 r&  
&EfQ%r}C  
private static class MaxHeap{ l~6K}g?  
%GHGd'KO&  
void init(int[] data){ T#) )_aC  
this.queue=new int[data.length+1]; wY8:j  
for(int i=0;i queue[++size]=data; {_QdB;VwH  
fixUp(size); f8Iddm#  
} p+ CUYo(  
} iRzFA!wH  
p49]{2GXb  
private int size=0; =V[uXm  
~SnUnNDm`  
private int[] queue; Jsz!ro  
n t}7|h|  
public int get() { p;O%W@n"  
return queue[1]; 5 % 2A[B  
} Ao\xse{E  
" 8xAe0-4  
public void remove() { kAki 9a(=!  
SortUtil.swap(queue,1,size--); D|N4X`T`  
fixDown(1);  .Q{RT p  
} SIe!=F[  
file://fixdown an"&'D}U  
private void fixDown(int k) { *MP.YI:h  
int j; : ?>7Z6  
while ((j = k << 1) <= size) { CD$#}Id  
if (j < size %26amp;%26amp; queue[j] j++; 'X^auyL  
if (queue[k]>queue[j]) file://不用交换 Y`;}w}EcgR  
break; F5h/>  
SortUtil.swap(queue,j,k); FSIiw#xzH  
k = j; 5(3O/C{?~  
} "& ,ov#  
} fw%`[( hK  
private void fixUp(int k) { CSO'``16  
while (k > 1) { &{}Mds  
int j = k >> 1; jJy:/!i  
if (queue[j]>queue[k]) EB~]6.1  
break; ?sf<cFF  
SortUtil.swap(queue,j,k); 1E+12{~m"i  
k = j; F (*B1J2_g  
} gcJ!_KZK  
} $[ {5+*  
g7\ =  
} mdj%zJ8/  
`o[l%I\Q  
} JVZ-nHf(9  
{.p.?  
SortUtil: /jY u-H+C  
i"^>sk  
package org.rut.util.algorithm; a.Ho>(V/4  
^*K=wE}AG  
import org.rut.util.algorithm.support.BubbleSort; r|Ui1f5  
import org.rut.util.algorithm.support.HeapSort; (}: s[cs  
import org.rut.util.algorithm.support.ImprovedMergeSort; P@{ x@9kI  
import org.rut.util.algorithm.support.ImprovedQuickSort; UUah5$Iy  
import org.rut.util.algorithm.support.InsertSort; i0vm00oT  
import org.rut.util.algorithm.support.MergeSort; ag-A}k>v  
import org.rut.util.algorithm.support.QuickSort; X8 nos  
import org.rut.util.algorithm.support.SelectionSort; o NtFYY  
import org.rut.util.algorithm.support.ShellSort;  : T*Q2  
#9vC]Gm  
/** Shm> r@C?  
* @author treeroot / ^.|m3  
* @since 2006-2-2 KZm&sk=QM-  
* @version 1.0 aurs~  
*/ 2u"lc'9v  
public class SortUtil { 1F@k9[d~  
public final static int INSERT = 1; =BJe)!b  
public final static int BUBBLE = 2; <W4F`6`x  
public final static int SELECTION = 3; $v^hzC  
public final static int SHELL = 4; -@orIwA&  
public final static int QUICK = 5; hAGHb+:  
public final static int IMPROVED_QUICK = 6; YH&=cI@  
public final static int MERGE = 7; JJ?{V:  
public final static int IMPROVED_MERGE = 8; Ei;tfB  
public final static int HEAP = 9; 2hh8G5IaQ  
iOE. .xA:  
public static void sort(int[] data) { K7 e~%mY  
sort(data, IMPROVED_QUICK); [a=exK  
} iI3:<j l  
private static String[] name={ i+_LKHQN  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SQKhht`M  
}; Q;M\fBQO}&  
?,} u6tH  
private static Sort[] impl=new Sort[]{ $3-v W{<  
new InsertSort(), ^h(wi`i  
new BubbleSort(), zLI0RI.Pe  
new SelectionSort(), }z3j7I  
new ShellSort(),  g'0CYY  
new QuickSort(), aeqz~z2~8s  
new ImprovedQuickSort(), VYvfx  
new MergeSort(), K_7pr~D]@r  
new ImprovedMergeSort(), 3EoCEPb#  
new HeapSort() NvR{S /Z  
}; 1b,a3w(:1  
Cux(v8=n  
public static String toString(int algorithm){ 8{ zX=  
return name[algorithm-1]; `Q] N]mK  
} &Y@i:O  
}X(&QZ7i`  
public static void sort(int[] data, int algorithm) { +mQ5\14#  
impl[algorithm-1].sort(data); =L6#=7hcl  
} Gp"GTPT{  
rzjVUPdnh  
public static interface Sort { c_lHj#A(l  
public void sort(int[] data); )>volP  
} lj4Fg*/Yn  
Zt=|q$"  
public static void swap(int[] data, int i, int j) { 5]xuU.w'  
int temp = data; )uPJ? 2S9  
data = data[j]; S-Uod y  
data[j] = temp; @"@a70WHk  
} .3!Wr*o  
} 9shf y4?k  
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