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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。 ZG!x$ yi$  
插入排序: ,$o-C&nC  
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package org.rut.util.algorithm.support; i~(#S8U4d  
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import org.rut.util.algorithm.SortUtil; D@2Ya/c  
/** E#8J+7  
* @author treeroot R+k=Ea&x  
* @since 2006-2-2 _J +]SNk  
* @version 1.0 J,6!7a  
*/ o&WRta>VP  
public class InsertSort implements SortUtil.Sort{  9F/|`  
q`h7H][(A  
/* (non-Javadoc) NEZH<#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DIL)7K4  
*/ cF-Jc}h  
public void sort(int[] data) { #}nBS-+  
int temp; Yjpb+}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [B.W1 GL!  
} i%#th'C!P  
} E `?S!*jm  
} 7)g;Wd+H  
*'kC8 ZR5  
} V6A5(-%`y  
ABd153oW"  
冒泡排序: >\N$>"~a  
d#x8O4S%i2  
package org.rut.util.algorithm.support; [YL sEo=  
V3aY]#Su  
import org.rut.util.algorithm.SortUtil; \ x>NB  
%Z-TbOX  
/** D3,t6\m  
* @author treeroot roK4RYJ7)  
* @since 2006-2-2 2gK p\!  
* @version 1.0 A5(kOtgiT  
*/ {EiG23!qV  
public class BubbleSort implements SortUtil.Sort{ >d1aE)?  
bCe[nmE2  
/* (non-Javadoc) uWM4O@Qn)d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VH$\ a~|  
*/ =}6Z{}(TT  
public void sort(int[] data) { A `H]q5d  
int temp; }K qw\]`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @i1.5z  
if(data[j] SortUtil.swap(data,j,j-1); rK0|9^i{  
} noD7G2o  
} E(L^hZMc  
} [jmAMF<F  
} :;#c:RKi:  
QjT#GvHY  
} cmC&s'/8`D  
YpbdScz  
选择排序: jAK`96+D~b  
Luu-c<*M  
package org.rut.util.algorithm.support; U7Sl@-#|  
zv3<i (  
import org.rut.util.algorithm.SortUtil; Kk"B501  
FnU{C=P  
/** n ;$}pg ~  
* @author treeroot FPM}:c4  
* @since 2006-2-2 r+WPQ`Ar  
* @version 1.0 E t[QcB3  
*/ . LVOaxT  
public class SelectionSort implements SortUtil.Sort { zz''FmedF  
Q(eQZx{  
/* _J$p <  
* (non-Javadoc) & ;x1Rx  
* X+G*Q}5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JT+lWhy  
*/ FWx*&y~$  
public void sort(int[] data) { \|4MU"ri  
int temp; jjlCi<9CQ^  
for (int i = 0; i < data.length; i++) { 0}3'h#33=  
int lowIndex = i; p!5JO4F$  
for (int j = data.length - 1; j > i; j--) { 2ZFK jj  
if (data[j] < data[lowIndex]) { 5~TA(cb5  
lowIndex = j; fP4IOlHkE  
} \7?MUa.4  
} pt;Sk?-1  
SortUtil.swap(data,i,lowIndex); g KY ,G  
} <'yC:HeAwD  
} [~%;E[ky$  
YuW\GSV00  
} :jp$X|  
N= q29JU  
Shell排序: ?At-   
*y@]zNPD  
package org.rut.util.algorithm.support;  x a,LV  
ZQ8Aak  
import org.rut.util.algorithm.SortUtil; G+yz8@  
\O4=mJ  
/** GM92yi!8  
* @author treeroot v~=ol8J B  
* @since 2006-2-2 *wx^mB9  
* @version 1.0 q.tL'  
*/ ZdzGJ[$  
public class ShellSort implements SortUtil.Sort{ r+yLK(<zp  
d'J?QH!N0  
/* (non-Javadoc) No+zw%l0E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q)dns)_x  
*/ zW&W`(  
public void sort(int[] data) { M_uij$1-  
for(int i=data.length/2;i>2;i/=2){ Darkj>$\  
for(int j=0;j insertSort(data,j,i); Q&;qFv5-l  
} #bH[UId[  
} ^9E(8DD  
insertSort(data,0,1); L0~O6*bk  
} v#G ^W  
34+}u,=  
/** } 4^UVdz  
* @param data )2hoO_l:  
* @param j 4'*K\Ul).H  
* @param i wtyu"=  
*/ ^)I:82"|?  
private void insertSort(int[] data, int start, int inc) { i{0_}"B  
int temp; o~ed0>D-LS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tDVdl^#  
} @TDcj~oR ?  
} zq&lxySa  
} r G6/h'!|  
`Ea3z~<7M  
} /zKuVaC  
4YC`dpO'  
快速排序: lB-7.  
:z7!X.*  
package org.rut.util.algorithm.support; 3[4]G@  
u1l#k60  
import org.rut.util.algorithm.SortUtil; R >TtAm0N  
:C5N(x  
/** eNX-2S  
* @author treeroot o\N}?Z,Kk  
* @since 2006-2-2 |rQ;|+.  
* @version 1.0 6gXc-}dp  
*/ :%gBcL9T  
public class QuickSort implements SortUtil.Sort{ K""04Ew*pV  
0ro+FJ r  
/* (non-Javadoc) js j" W&J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?a% u=G  
*/ be_t;p`3  
public void sort(int[] data) { 827N?pU$)  
quickSort(data,0,data.length-1); -9mh|&z`  
} (Jm_2CN7X  
private void quickSort(int[] data,int i,int j){ O;~1M3Ii  
int pivotIndex=(i+j)/2; SFHa(JOS  
file://swap =B\ ?(  
SortUtil.swap(data,pivotIndex,j); uAP|ASH9T  
^t"\PpmK<d  
int k=partition(data,i-1,j,data[j]); XX =A1#H  
SortUtil.swap(data,k,j); F n\)*; ^  
if((k-i)>1) quickSort(data,i,k-1); ?Gb 18m  
if((j-k)>1) quickSort(data,k+1,j); ^J327  
nxG vh4'i8  
} QS[%`-dR2  
/** cla4%|kq3Y  
* @param data _+GCd8d  
* @param i !e?\> '  
* @param j D,2,4h!ka  
* @return {d) +a$qj  
*/ E 0YXgQa  
private int partition(int[] data, int l, int r,int pivot) { +m"iJW0  
do{ rHMsA|xz6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T =:^k+  
SortUtil.swap(data,l,r); !=a8^CV  
} b747eR 7E  
while(l SortUtil.swap(data,l,r); Ji=E 1R  
return l; IE3GM^7\  
} Od!j+.OY<  
3o6N&bQ b  
} Zcc6E2  
8Y:bvs.j  
改进后的快速排序: sC/T)q2  
E_FseR6  
package org.rut.util.algorithm.support;  pCv=rK@  
% nJ'r?+h  
import org.rut.util.algorithm.SortUtil; *8Gx_$t&  
^}9Aq $R  
/** I9_tD@s"(  
* @author treeroot *&LVn)@[`  
* @since 2006-2-2 ky,+xq  
* @version 1.0 7)~/`w)P  
*/ %A?Ym33  
public class ImprovedQuickSort implements SortUtil.Sort { [&6l=a  
BH\qm (X  
private static int MAX_STACK_SIZE=4096; }*;Hhbox  
private static int THRESHOLD=10; ?mnwD]u  
/* (non-Javadoc) Ot5 $~o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aHS.U^2  
*/ 6dV92:  
public void sort(int[] data) { tPc'# .  
int[] stack=new int[MAX_STACK_SIZE]; KD=T04v  
W.{#Pg1Da  
int top=-1; %=%jy  
int pivot; "C%;9_ig$  
int pivotIndex,l,r; vV,H@WK  
>(p "!  
stack[++top]=0; |{<g-)  
stack[++top]=data.length-1; ,@8>=rT  
b2 duC  
while(top>0){ BB>3Kj:|  
int j=stack[top--]; !Tr +:SM  
int i=stack[top--]; OANn!nZ.  
x4Y+?2  
pivotIndex=(i+j)/2; RV.*_FG  
pivot=data[pivotIndex]; P10`X&  
_\1wLcFj  
SortUtil.swap(data,pivotIndex,j); ;XRLp:y  
`b+f^6SJn  
file://partition 2(Vm0E  
l=i-1; z ~T[%RjO  
r=j; R4%!W~K  
do{ |JtdCP{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Q+[gGe JUF  
SortUtil.swap(data,l,r); +MIDq{B  
} pdngM 8n  
while(l SortUtil.swap(data,l,r); j|A *rzL8  
SortUtil.swap(data,l,j); JnlM0jc]`  
50F6jj  
if((l-i)>THRESHOLD){ MLG%+@\  
stack[++top]=i; "@;q! B.qo  
stack[++top]=l-1; 6Y>MW 4q  
} !vHnMY~AG  
if((j-l)>THRESHOLD){ +^iUY%pm  
stack[++top]=l+1; fILINW{Yk)  
stack[++top]=j; - /]ro8V$  
} Zz'(!h Uy  
0m(/hK  
} u-=S_e  
file://new InsertSort().sort(data); d+[yW7%J  
insertSort(data); <UQaRI[55  
} m"t\@f  
/** < N}UwB&  
* @param data 3ZGU?Z;R  
*/ 4_Tx FulX.  
private void insertSort(int[] data) { BNw^ _j1  
int temp; (YVl5}V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pk%I98! Jy  
} 1&\_|2  
} }L^Yoq]  
} {+r pMUs#  
bo '  
} LzB)o\a  
'g$~ij ;x  
归并排序: :~3sW< P R  
"#z4  
package org.rut.util.algorithm.support; :0$(umW@I"  
%H75u 6  
import org.rut.util.algorithm.SortUtil; k!H;(B"s-  
jhjGDF  
/** g e)g?IP4  
* @author treeroot *M\Qt_[  
* @since 2006-2-2 Ck8`$x&t  
* @version 1.0 Vh$~]>t:f  
*/ E#JDbV1AC  
public class MergeSort implements SortUtil.Sort{ IE.JIi^w  
b)J(0,9`G"  
/* (non-Javadoc) Zy,U'Dv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]IMBRZQqb  
*/ u4bPj2N8I  
public void sort(int[] data) { v^2K=f[nE  
int[] temp=new int[data.length]; ,u^i0uOg  
mergeSort(data,temp,0,data.length-1); ke_Dd?  
} 7].tt  
/f~ V(DK  
private void mergeSort(int[] data,int[] temp,int l,int r){ B;9X{"  
int mid=(l+r)/2; *L7 ZyERs  
if(l==r) return ; LL|$M;S  
mergeSort(data,temp,l,mid); |0:< Z(  
mergeSort(data,temp,mid+1,r); ba& \~_4  
for(int i=l;i<=r;i++){ 9i GUE  
temp=data; Q!(16  
} 5VdF^.:u  
int i1=l; j:B?0~=  
int i2=mid+1; 0FD#9r  
for(int cur=l;cur<=r;cur++){ }md[hiJ  
if(i1==mid+1) +pp|Qgr 3  
data[cur]=temp[i2++]; n,}\;Bp  
else if(i2>r) +#7 e?B  
data[cur]=temp[i1++]; 37Ux2t  
else if(temp[i1] data[cur]=temp[i1++]; 4^\5]d!  
else '1{co/Y  
data[cur]=temp[i2++]; &Iv3_T<AF  
} 9gR@Q%b)  
} B 3<T#  
3* C9;Q}  
} xD+n2:I{  
?4v&TB@  
改进后的归并排序: a[d6@!  
^x(BZolkm  
package org.rut.util.algorithm.support; s<,[xkMB  
E wDFUK  
import org.rut.util.algorithm.SortUtil; @H[)U/.  
Q${0(#Nu  
/** *9.4AW~]X  
* @author treeroot '| (#^jAj  
* @since 2006-2-2 @vzv9c[  
* @version 1.0 a{*r^m'N  
*/ p2T<nP<Pt  
public class ImprovedMergeSort implements SortUtil.Sort { \yDr  
klSzmi4M  
private static final int THRESHOLD = 10; aVTTpMY  
T^FeahA7;  
/* 7;0$UYDU*  
* (non-Javadoc) w}2;f=  
* J3/2>N]/}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ErZYPl  
*/ m"3gTqG  
public void sort(int[] data) { 2Lravb3  
int[] temp=new int[data.length]; : &! >.Y  
mergeSort(data,temp,0,data.length-1); ~+ _|J"\  
} bWp40&vx  
dt -EY  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]<y _ =>  
int i, j, k; (jQ]<q%P  
int mid = (l + r) / 2; ,UOAGu<_gb  
if (l == r) ~Ey)9phZK  
return; X MkyX&y  
if ((mid - l) >= THRESHOLD) R.ZC|bPiD  
mergeSort(data, temp, l, mid); {~cG'S Y%  
else 'j6)5WL$  
insertSort(data, l, mid - l + 1); i,k.#Vx[m  
if ((r - mid) > THRESHOLD) I,rs&m?/m  
mergeSort(data, temp, mid + 1, r); vsFRWpq  
else 8Xo`S<8VS  
insertSort(data, mid + 1, r - mid); 6x6xv:\  
Y$tgz)  
for (i = l; i <= mid; i++) { A'jw;{8NpF  
temp = data; B Q) 1)8r  
} &DUt`Dr w  
for (j = 1; j <= r - mid; j++) { D7'P^*4_B  
temp[r - j + 1] = data[j + mid]; 6[iuCMOZ  
} 1m$< %t.>  
int a = temp[l]; Muhq,>!U  
int b = temp[r]; PA=.)8  
for (i = l, j = r, k = l; k <= r; k++) { xt{f+c@P  
if (a < b) { @(;zU~l/  
data[k] = temp[i++]; a.oZ}R7'Y  
a = temp; $}9.4` F>  
} else { +N~?_5lv\s  
data[k] = temp[j--]; zVSbEcr,C~  
b = temp[j]; nWrkn m  
} .H.#W1`  
} Oyfc!  
} ?O]iX;2vM  
"cK@Yo  
/** - %ul9}.  
* @param data qTGEi  
* @param l *2$I, ~(P  
* @param i Q t!X<.  
*/ h^u 9W7.  
private void insertSort(int[] data, int start, int len) { > @Ux8#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NlBnV  
} 3C=|  
} rPk=9I  
} c<'Pt4LY  
} q~3dbj  
?5%0zMC  
堆排序: ~AD%aHR  
Sdc yL%6!  
package org.rut.util.algorithm.support; fvW7a8k3  
kfod[*3  
import org.rut.util.algorithm.SortUtil; %&c+} m  
|@}Yady@C  
/** $oefG}h2  
* @author treeroot Ab]`*h\U  
* @since 2006-2-2 yv.UNcP?  
* @version 1.0 h\ZnUn_J  
*/ ?a8 o.&`l  
public class HeapSort implements SortUtil.Sort{ rt\i@}  
[SluYmW  
/* (non-Javadoc) YTiXU Oj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~^U(GAs  
*/ :hre|$@{a  
public void sort(int[] data) { __}j {Buk  
MaxHeap h=new MaxHeap(); 9=(*#gRd  
h.init(data); hpftVEB  
for(int i=0;i h.remove(); F,Ls1  
System.arraycopy(h.queue,1,data,0,data.length);  V~V_+  
}  pw^$WK  
CJ*8x7-t  
private static class MaxHeap{ HPGMR4=ANS  
dgLE/r?  
void init(int[] data){ |hsg= LX  
this.queue=new int[data.length+1]; ,KXS6:1%5Y  
for(int i=0;i queue[++size]=data; d!+8  
fixUp(size); Wb*A};wE  
} &5]&6TD6  
} ;pK/t=$  
[TUy><Z  
private int size=0; 89*txYmx  
p^QEk~qw  
private int[] queue; D%L}vugxK  
~j%g?;#*  
public int get() { #t.)4$  
return queue[1]; T%{qwZc+mJ  
} > /,7j:X  
W(^R-&av  
public void remove() { wc&%icF*cr  
SortUtil.swap(queue,1,size--); } 0su[gy[  
fixDown(1); \k?Fu=@  
} nE_g^  
file://fixdown FW](GWp`:  
private void fixDown(int k) { 99GzhX_  
int j; O=2"t%Gc  
while ((j = k << 1) <= size) { ={HYwP;  
if (j < size %26amp;%26amp; queue[j] j++; ,,U8X [A  
if (queue[k]>queue[j]) file://不用交换 #$vQT}  
break; l* ~".q;S  
SortUtil.swap(queue,j,k); >_R,^iH"  
k = j; 6N7^`ghTf  
} \6]Uj+  
} 7w}PYp1Z'~  
private void fixUp(int k) { h'Gs$o7#P  
while (k > 1) { |f9fq~'1e  
int j = k >> 1; adi^*7Q] )  
if (queue[j]>queue[k]) Zo=w8Hr  
break; uT")j,tz  
SortUtil.swap(queue,j,k); ],!7S"{97  
k = j; =f{)!uW<4  
} l"T{!Oq  
} ';HNQe?vT  
etcpto=Mo  
} l_?r#Qc7  
Wciw6.@  
} 71g\fGG\  
CLQE@kF;  
SortUtil: ,PmQ}1kGW  
} `X.^}oe  
package org.rut.util.algorithm; .}xF2'~E/  
58vq5j<V  
import org.rut.util.algorithm.support.BubbleSort; do-mkvk  
import org.rut.util.algorithm.support.HeapSort; {[ E7Cf  
import org.rut.util.algorithm.support.ImprovedMergeSort; Zze(Ik  
import org.rut.util.algorithm.support.ImprovedQuickSort; -GqMis}c  
import org.rut.util.algorithm.support.InsertSort; 834E ]2  
import org.rut.util.algorithm.support.MergeSort; r.JY88"  
import org.rut.util.algorithm.support.QuickSort; (toN? ?r  
import org.rut.util.algorithm.support.SelectionSort; /:<.Cn>-  
import org.rut.util.algorithm.support.ShellSort; U\<8}+x  
J2va Kl  
/** RhL!Z z  
* @author treeroot Q?1' JF!G  
* @since 2006-2-2 Q5!"tF p  
* @version 1.0 f^EDiG>b`  
*/ {H\(H _X  
public class SortUtil { iJ7?6)\  
public final static int INSERT = 1; 6wmMg i_m  
public final static int BUBBLE = 2; @D'NoA@1A  
public final static int SELECTION = 3; \Y?ByY  
public final static int SHELL = 4; vv9=g*"j  
public final static int QUICK = 5; GadZ!_.f  
public final static int IMPROVED_QUICK = 6; ;:^^Qfp  
public final static int MERGE = 7; IM^K]$q$47  
public final static int IMPROVED_MERGE = 8; gM5`UH|  
public final static int HEAP = 9; t+2!"Jr  
F5Xj}`}bq  
public static void sort(int[] data) { App9um3:  
sort(data, IMPROVED_QUICK); 7I_1Lnnf  
} sfN6ro  
private static String[] name={ )J['0DUrZK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &' 0|U{|  
}; }H>}v/  
Q&X#( 3&'  
private static Sort[] impl=new Sort[]{ ) vKZs:  
new InsertSort(), o\ M  
new BubbleSort(), Oh|KbM*vS  
new SelectionSort(), %]iDhXLr  
new ShellSort(), E&wz0d;gf  
new QuickSort(), HZ+l){u  
new ImprovedQuickSort(), :B(vk3;U!  
new MergeSort(), 15 /lX  
new ImprovedMergeSort(), =MsQ=:ZV  
new HeapSort() 'H]&$AZ;@  
}; m"r=p  
Z<Pf[C  
public static String toString(int algorithm){  V/8"@C  
return name[algorithm-1]; OX  r%b  
} !qQ B}sAf  
9c}mAg4  
public static void sort(int[] data, int algorithm) { Ei Yj`P  
impl[algorithm-1].sort(data); ==?!z<I.d  
} qSg=[7XOO  
G 5T{*  
public static interface Sort { DMcH, _(  
public void sort(int[] data); FS1> J%P  
} eL`}j9  
a  St  
public static void swap(int[] data, int i, int j) { t 5{Y'  
int temp = data; `/4 R$E{  
data = data[j]; :Nt_LsH  
data[j] = temp; L  (#DVF  
} Z.iQm{bI  
} O #  
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