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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。 e U-A_5  
插入排序: ^BI&-bR@  
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package org.rut.util.algorithm.support; AP=SCq;  
@ e7_&EGR?  
import org.rut.util.algorithm.SortUtil; K+yi_n L  
/** pH@yE Vf  
* @author treeroot 'Nx"_jQ  
* @since 2006-2-2 y6s/S.  
* @version 1.0 soKR*gJ,  
*/ TFhYu  
public class InsertSort implements SortUtil.Sort{ v yP_qG  
*t={9h  
/* (non-Javadoc) +,D82V7S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +ZBj_Vw*|  
*/ :X*uE^bH  
public void sort(int[] data) { F{}:e QD  
int temp; >4#\ U!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g)MLgjj  
} mj9]M?]  
} .=c@ps  
} W}wd?WIps  
xrJ0  
} UB% ;P-RD  
!W=2ZlzS  
冒泡排序: FOcDBCrOe  
I+Fr#1  
package org.rut.util.algorithm.support; ,l\D@<F  
a1weTn*  
import org.rut.util.algorithm.SortUtil; 2Ju,P_<dt  
_)# ~D*3  
/** O}7aX '  
* @author treeroot ACgWT  
* @since 2006-2-2 RWn#"~  
* @version 1.0 27H4en; o=  
*/ bW'Y8ok[v  
public class BubbleSort implements SortUtil.Sort{ %5(v'/dQ  
-ktYS(8&  
/* (non-Javadoc) `"bp -/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;[Hrpl S  
*/ I]ol[ X0S  
public void sort(int[] data) { q{)Q ?E  
int temp; )/tdiRpn  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <^8OYnp  
if(data[j] SortUtil.swap(data,j,j-1); Y[fbmn^  
} iWn7vv/t  
} i"hn%u$V  
} ;nf}O87~  
} zPb "6%1B  
.O.fD  
} 2wgdrO|B  
vYG$>*  
选择排序: g|4v>5Y  
W{;LI WsZ  
package org.rut.util.algorithm.support; +;;pM[U  
\Ng[lN  
import org.rut.util.algorithm.SortUtil; 1) G6  
=TXc - J  
/** N" oJ3-~  
* @author treeroot UIw6~a3E  
* @since 2006-2-2 HC ?XNR&  
* @version 1.0 ,[Z;"wE  
*/ CB?H`R pC.  
public class SelectionSort implements SortUtil.Sort { v_@&#!u`  
ZbcpE~<a  
/* z3-AYQ.H  
* (non-Javadoc) cV)~%e/  
* NW;wy;;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iD9hqiX&  
*/ JTB5#S4W  
public void sort(int[] data) { *CXVA&?  
int temp; y<5xlN(+v  
for (int i = 0; i < data.length; i++) { >pA9'KWs]  
int lowIndex = i; D$c4's `5  
for (int j = data.length - 1; j > i; j--) { `{I-E5 x  
if (data[j] < data[lowIndex]) { U z6XQskX  
lowIndex = j; *,DBRJ_*7  
} lL:J:  
} ;q$O^r~  
SortUtil.swap(data,i,lowIndex); Bhrp"l +|  
} [HENk34  
} ffYiu4$m  
hY Nb9^  
} mWM!6"  
Ws`P(WHm  
Shell排序: ]={{$}8.  
-gV'z5  
package org.rut.util.algorithm.support; hw&R .F  
KmkPq]  
import org.rut.util.algorithm.SortUtil; ;=6~,k)  
f/qG:yTV`  
/** L1k_AC1.M  
* @author treeroot fhmq O0  
* @since 2006-2-2 [nlW}1)46  
* @version 1.0 DFt1{qS8@u  
*/ lH^[b[  
public class ShellSort implements SortUtil.Sort{ L[*Xrp;/&  
_`zj^*%  
/* (non-Javadoc) MLcc   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZWSYh>"  
*/ /wL}+  
public void sort(int[] data) { "tbKKh66  
for(int i=data.length/2;i>2;i/=2){ S:Ne g!`  
for(int j=0;j insertSort(data,j,i); :_Y@,CpIEg  
} 8:,l+[\  
} GRb"jF>ut  
insertSort(data,0,1); <gKT7ONtg  
} ?8n`4yO0  
|}\et ecB  
/** *#,wV  
* @param data :d-+Z%Y  
* @param j yla&/K;|*  
* @param i ,xrXby|R"  
*/  `' 5(4j  
private void insertSort(int[] data, int start, int inc) { :'!,L0I|t  
int temp; W^q;=D6uh  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z!m0nx  
} Z*QsDS  
} ?*a:f"vQ  
} /4]M*ls  
R$=UJ}>  
} [dL4u^]{  
k9.2*+vvg  
快速排序: >v`lsCGb  
}Z- ]m  
package org.rut.util.algorithm.support; e@6<mir[4  
e qQAst#~  
import org.rut.util.algorithm.SortUtil; 70l"[Y  
Zycu3%JI  
/** VAF+\Cea=  
* @author treeroot Y6/'gg'&5  
* @since 2006-2-2 HKCMKHR  
* @version 1.0 }.O2xZ;}]'  
*/ iNgHx[*?  
public class QuickSort implements SortUtil.Sort{ ` a5$VV%J  
cTFyF)  
/* (non-Javadoc) RiF~-;v&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Nglt3J[  
*/ cejSGsW6q  
public void sort(int[] data) { Ft>Abj,6  
quickSort(data,0,data.length-1); Q d]5e  
} >z1RCQWju  
private void quickSort(int[] data,int i,int j){ vDz)q  
int pivotIndex=(i+j)/2; ](4V 3w.  
file://swap V4}9f5FR  
SortUtil.swap(data,pivotIndex,j); ,L^eD>|j5  
a5:Q%F<!  
int k=partition(data,i-1,j,data[j]); <XX\4[wb  
SortUtil.swap(data,k,j); SEF/ D0  
if((k-i)>1) quickSort(data,i,k-1); Slcf=  
if((j-k)>1) quickSort(data,k+1,j); M;={]w@n  
ZJ@M}-4O1  
} h*{{_3,  
/** SJ;u,XyWn  
* @param data i=@.u=:  
* @param i I2(5]85&]s  
* @param j ~S15tZ $  
* @return 5zX;/n~  
*/ F_U3+J>  
private int partition(int[] data, int l, int r,int pivot) { |AW[4Yn>  
do{ &F*s.gL  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .{LFc|Z[  
SortUtil.swap(data,l,r); )V%xbDdS  
} ={-\)j  
while(l SortUtil.swap(data,l,r); v_"p)4&'  
return l; hV])\t=yf  
} deHhl(U;  
wIz<Y{HA=  
} #.UooFk+Y  
<ZxxlJS)6  
改进后的快速排序: So\(]S  
UP}Y s*  
package org.rut.util.algorithm.support; lwaxj7  
aErms-~  
import org.rut.util.algorithm.SortUtil; *+re2O)Eh'  
 pI|Lt  
/** ]tL9y<  
* @author treeroot `Lb^!6`)  
* @since 2006-2-2 -$J\BkI  
* @version 1.0 }$s#H{T!  
*/ oE[wOq +  
public class ImprovedQuickSort implements SortUtil.Sort { W# E`h  
$]K gs6=r  
private static int MAX_STACK_SIZE=4096; &duWV6Acw  
private static int THRESHOLD=10; M.))UKSF  
/* (non-Javadoc) 0m $f9b|Q?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :jB~rhZ~  
*/ Nl,M9  
public void sort(int[] data) { #\[h.4i  
int[] stack=new int[MAX_STACK_SIZE]; A(2_hl-  
2%i_SX[  
int top=-1; 1r;]==  
int pivot; l5QH8eNwME  
int pivotIndex,l,r; R)MWO5  
b}< T<  
stack[++top]=0; Ppi/`X  
stack[++top]=data.length-1; c[J(H,mt/  
A(G%9'T  
while(top>0){  \B) a57  
int j=stack[top--]; V TQ V]>|  
int i=stack[top--]; e\%+~GUTC=  
}kzGuNj  
pivotIndex=(i+j)/2; <0T5W#H`D  
pivot=data[pivotIndex]; yoiKt; S  
'QW/TJ=7r  
SortUtil.swap(data,pivotIndex,j); gcDo o2RE  
~sj'GEhEg  
file://partition oU`8\ n](  
l=i-1; I[,tf!  
r=j; GSo&$T;B6  
do{ "} =RPc%9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Xmr|k:z  
SortUtil.swap(data,l,r); Agt6G\ n  
} zmd,uhNc:  
while(l SortUtil.swap(data,l,r); ^Z1t'-xZ  
SortUtil.swap(data,l,j); U$jw8I'.  
"zFv? ay  
if((l-i)>THRESHOLD){ M &`ZF  
stack[++top]=i; +@*}_%^l"  
stack[++top]=l-1; [P~6O>a5p  
} \1|]?ZQ\K  
if((j-l)>THRESHOLD){  .>?h  
stack[++top]=l+1; gwVfiXR4  
stack[++top]=j; xuBXOr4"P  
} {6H%4n  
 +6paM  
} !R p  
file://new InsertSort().sort(data); }?[^q  
insertSort(data); #m>Rt~(,S  
} )Dn~e#  
/** bz5",8Mn  
* @param data oVi_X98R  
*/ ~q0g7?}&  
private void insertSort(int[] data) { >! u@>  
int temp; h M{&if  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V.<$c1#=$  
} ~yacJU=  
} 0LI:R'P+P[  
} R}~p1=D  
K&1o!<|  
} /P_1vQq  
QG{).|pm  
归并排序: -anLp8G*  
bOIVe  
package org.rut.util.algorithm.support; e| AA7  
;VQFz&Q$u  
import org.rut.util.algorithm.SortUtil; [s1Hd~$  
1|K>V;C  
/** `D2wlyqO6  
* @author treeroot >&uG1q0p.  
* @since 2006-2-2 xL.T}f~y2>  
* @version 1.0 _W@SCV)yH  
*/ @\~qXz{6J  
public class MergeSort implements SortUtil.Sort{ OBF3)L]  
bXN-q!  
/* (non-Javadoc) L,@O OBD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sOyWsXd+R'  
*/ ONx|c'0g  
public void sort(int[] data) { iU)-YFO  
int[] temp=new int[data.length]; p(2j7W-/  
mergeSort(data,temp,0,data.length-1); 3F%Q q7v  
} kBPFk t2  
tykA69X\W  
private void mergeSort(int[] data,int[] temp,int l,int r){ %9_wDfw~  
int mid=(l+r)/2; Q:iW k6  
if(l==r) return ; mwuFXu/  
mergeSort(data,temp,l,mid); ;bt@wgY  
mergeSort(data,temp,mid+1,r); \L#BAB6z  
for(int i=l;i<=r;i++){ ++KY+j.^  
temp=data; WY@x2bBi  
} 5io7!%  
int i1=l; /Vpd*obMB  
int i2=mid+1; uO$ujbWZ  
for(int cur=l;cur<=r;cur++){ V/5hEoDt  
if(i1==mid+1) qA- ya6  
data[cur]=temp[i2++]; `1%SXP1  
else if(i2>r) %iPu51+=  
data[cur]=temp[i1++]; &`7~vA&c  
else if(temp[i1] data[cur]=temp[i1++]; d}f| HOFq  
else ujcS>XN,1  
data[cur]=temp[i2++]; .js4)$W^  
} lY}mrb  
} t\2myR3  
$,k SR}  
} RJs_ S  
";~}"Yz?[  
改进后的归并排序: T0_9:I`&  
/,v:!*  
package org.rut.util.algorithm.support; |-7<?aw"  
^_<>o[qE  
import org.rut.util.algorithm.SortUtil; ~H0~5v F  
$8&HpX#h$  
/** vg5zsR0u  
* @author treeroot }\u~He%  
* @since 2006-2-2 +N[dYm  
* @version 1.0 i7~oZ)w  
*/ 4~a0   
public class ImprovedMergeSort implements SortUtil.Sort { i:#R U^R  
|PN-,f{-  
private static final int THRESHOLD = 10; =nnS X-x  
4\(;}M-R{  
/* kyJv,!};  
* (non-Javadoc) T GMHo{ ]  
* s)=L6t^a6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9[N' HpQ3  
*/ >/n5=RWh  
public void sort(int[] data) { Vm8;{Sq  
int[] temp=new int[data.length]; cXJgdBwo  
mergeSort(data,temp,0,data.length-1); 17D167\X  
} ]CC= \ <  
w & RpQcV  
private void mergeSort(int[] data, int[] temp, int l, int r) { B4R,[WE"  
int i, j, k; 3:Co K#  
int mid = (l + r) / 2; Op3 IL/  
if (l == r) n E-=7S L  
return; q){]fp.,@  
if ((mid - l) >= THRESHOLD) N 5/TV%u  
mergeSort(data, temp, l, mid); >K\ 79<x|  
else >mF`XbS  
insertSort(data, l, mid - l + 1); =|3 L'cDC  
if ((r - mid) > THRESHOLD) #<'/s qL  
mergeSort(data, temp, mid + 1, r); >^J!Z~;L)  
else [9?= &O#*  
insertSort(data, mid + 1, r - mid); *7*g! km  
A#1y>k  
for (i = l; i <= mid; i++) { f`Wfw3  
temp = data; #UND'c(5  
} zm8m J2s  
for (j = 1; j <= r - mid; j++) { cJ8*[H<NV  
temp[r - j + 1] = data[j + mid]; D'nV &m  
} N_0&3PUSM  
int a = temp[l]; ==FzkRA)  
int b = temp[r]; O1#rCFC|y  
for (i = l, j = r, k = l; k <= r; k++) { D"x~bs?V\  
if (a < b) { [ z$J  
data[k] = temp[i++]; *fd` .}  
a = temp; c7rYG]  
} else { G~esSL^G/  
data[k] = temp[j--]; 3F.O0Vz  
b = temp[j]; 0)2lBfHQ&  
} Ne9 .wd  
} :m$%D]WY  
} rz7yAm  
,}2j Fb9z4  
/** *<0g/AL  
* @param data NX=dx&i>+  
* @param l gSe{ S  
* @param i Mvcl9  
*/ (u'/tNGS  
private void insertSort(int[] data, int start, int len) { dJ&s/Z/>E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fglZjT  
} 57MoO  
} W@S9}+wl*  
} E Fv+[  
} [cW  
fzio8m KVX  
堆排序: /6.b>|zF  
qnm9L w#  
package org.rut.util.algorithm.support; mn4;$1~e>H  
z`2d(KE?  
import org.rut.util.algorithm.SortUtil; U&/S  
Q?;ntzi  
/** HZ}'W<N  
* @author treeroot S8cFD):q  
* @since 2006-2-2 uJ y@  
* @version 1.0 ge?ymaU$a  
*/ }wb;ulN)  
public class HeapSort implements SortUtil.Sort{ enr mjA&3  
zF$wz1 %  
/* (non-Javadoc) :)yM9^<D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a[!d)Y:zx  
*/ {2Ibd i  
public void sort(int[] data) { E,$uN w']  
MaxHeap h=new MaxHeap(); ,5?MRqCM  
h.init(data); m{yON&y  
for(int i=0;i h.remove(); hzH5K  
System.arraycopy(h.queue,1,data,0,data.length); >dGYZfqD  
} n 3]y$wK  
=>J#_Pprn  
private static class MaxHeap{ < KA@A}  
?C{N0?[P-  
void init(int[] data){ ?n+\T'f!  
this.queue=new int[data.length+1]; Y|~>(  
for(int i=0;i queue[++size]=data; :F\f}G3  
fixUp(size); b#U%aPH  
} J)-> 7h =  
} f5-={lUlIS  
I$LO0avvH2  
private int size=0; u5_fM*Ka  
]>o2P cb;  
private int[] queue; 5=986ci$U  
?rDwYG(u]@  
public int get() { &O,$l3 P  
return queue[1]; g1|c?#fwo  
} :JIPF=]fc  
CQ[-Cp7  
public void remove() { y<b0z\  
SortUtil.swap(queue,1,size--); #w@Pa L iS  
fixDown(1); ||HIp9(3  
} NZ5~\k  
file://fixdown mK-:laIL"  
private void fixDown(int k) { SI9hS4<j  
int j; cF vx* n  
while ((j = k << 1) <= size) { h)vTu%J:  
if (j < size %26amp;%26amp; queue[j] j++; O2dgdtm  
if (queue[k]>queue[j]) file://不用交换 lz 6 Aj  
break; Qg!*=<b  
SortUtil.swap(queue,j,k); B vc=gW  
k = j; Qknc.Z}  
} a)Ek~{9  
} KOx#LGz  
private void fixUp(int k) { BaAb4{  
while (k > 1) { Hrnql  
int j = k >> 1; \[EWxu  
if (queue[j]>queue[k]) |lwN!KVQ,  
break; =[+&({  
SortUtil.swap(queue,j,k); nj`q V  
k = j; 4/WCs$  
} / nFw  
} -Wk"o?} q  
vKC&Qi ;  
} e&4u^'+K  
TWEqv<c  
} p9WskYpm  
J9.p8A^^2  
SortUtil: &X,)+ b=  
(Nb1R"J `  
package org.rut.util.algorithm; 4>C=:w  
,z )NKt#  
import org.rut.util.algorithm.support.BubbleSort; {VG[m@  
import org.rut.util.algorithm.support.HeapSort; 3uG5b8?  
import org.rut.util.algorithm.support.ImprovedMergeSort; {Y%=/ba W  
import org.rut.util.algorithm.support.ImprovedQuickSort; Aq'E:/  
import org.rut.util.algorithm.support.InsertSort; NV4W2thYo  
import org.rut.util.algorithm.support.MergeSort;  89=JC[c  
import org.rut.util.algorithm.support.QuickSort; }zxh:"#K  
import org.rut.util.algorithm.support.SelectionSort; Jjh!/pWZ4  
import org.rut.util.algorithm.support.ShellSort; t~K!["g  
R6mJFE*6T9  
/** ^>{;9 lo<  
* @author treeroot < DZ76  
* @since 2006-2-2 _hL4@ C  
* @version 1.0 -L?% o_  
*/ p Y>-N  
public class SortUtil { *"{Z?< 3  
public final static int INSERT = 1; @b\_696.  
public final static int BUBBLE = 2; .hNw1~Fj  
public final static int SELECTION = 3; S{7ik,Gdg  
public final static int SHELL = 4; R bc2g"]  
public final static int QUICK = 5; ={@ @`yP^$  
public final static int IMPROVED_QUICK = 6; u!Nfoq&'u  
public final static int MERGE = 7; i=H>D  
public final static int IMPROVED_MERGE = 8; LEnP"o9ZW  
public final static int HEAP = 9; ||ZufFO  
E(kb!Rz  
public static void sort(int[] data) {  ,bp pM  
sort(data, IMPROVED_QUICK); ^_h7!=W  
} C{i;spc!bi  
private static String[] name={  Is6 _  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,W8Iabi^  
}; xp8f  
~'QeN%qadP  
private static Sort[] impl=new Sort[]{ l%U_iqL&  
new InsertSort(), iA{jKk=  
new BubbleSort(), lF"(|n"R  
new SelectionSort(), f3>6:(  
new ShellSort(), ,3- -ERf  
new QuickSort(), |-Esc|J(  
new ImprovedQuickSort(), S<]a@9W  
new MergeSort(), [xp,&  
new ImprovedMergeSort(), pH l2!{z  
new HeapSort() u#@{%kPW  
}; =>z tBw\  
Y0fO.k#C^  
public static String toString(int algorithm){ A r7mH4M  
return name[algorithm-1]; $EGRaps{j>  
} ~& WN)r'4y  
m5em<P!G  
public static void sort(int[] data, int algorithm) { hB}h-i(u  
impl[algorithm-1].sort(data); P9TBQW2G{  
} Ao,!z  
5H :~6z  
public static interface Sort { $K_YC~  
public void sort(int[] data); %::deV7  
} YyJ{  
o|;eMO-  
public static void swap(int[] data, int i, int j) { Am4^v?q  
int temp = data; ;y~{+{{Ow  
data = data[j]; =e!l=d|/  
data[j] = temp; 1^f.5@tV  
} ?X#/1X%u:  
} =GKS;d#/  
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