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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。 Ny/eYF#  
插入排序: vGh>1U:  
w"dKOdY  
package org.rut.util.algorithm.support; $*%,  
#(Gz?kGAH`  
import org.rut.util.algorithm.SortUtil; gVzIEE25  
/** K#X/j'$^  
* @author treeroot "uIaKb  
* @since 2006-2-2 @Bhcb.kbq  
* @version 1.0  @,k5T51m  
*/ Gvh"3|u ?z  
public class InsertSort implements SortUtil.Sort{ {CBb^BP  
zN]%p>,)HB  
/* (non-Javadoc) O]@#53)Tz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a <?~1pWtc  
*/ ; xp-MK  
public void sort(int[] data) { <YU4RZ  
int temp; ,z/aT6M?H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y<Xu65  
} {b4`\ I@<  
} JVy|SA&R  
} ;zD4 #7=  
6V JudNA  
} ug2W{D  
N\|z{vn  
冒泡排序: OQ?N_zs,  
|H_WY#  
package org.rut.util.algorithm.support; \2a;z<(  
GK'p$`oJm  
import org.rut.util.algorithm.SortUtil; , %z HykP  
^-k"gLg  
/** !aF~5P7%  
* @author treeroot $B%KkD  
* @since 2006-2-2 Wmcd{MOS  
* @version 1.0 d:K\W[$Bz  
*/ X7L:cVBg  
public class BubbleSort implements SortUtil.Sort{ ,jis@]:  
Ri"hU/H{  
/* (non-Javadoc) ur'<8pDb$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JJ?rVq1g  
*/ naf ~#==vc  
public void sort(int[] data) { s)qrlv5H  
int temp; #vV]nI<MF.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z@+nkTJ9&t  
if(data[j] SortUtil.swap(data,j,j-1); '_.qhsS  
} qD>^aEd@4  
} >;c);|'}q  
} Y#68_%[  
} ")uKDq  
~ `qWE u  
} j%nN*ms  
ANu>*  
选择排序: iVZ}+Ct<"  
.@OQ$ D<  
package org.rut.util.algorithm.support; *%KIq/V  
{ac$4#Bp[B  
import org.rut.util.algorithm.SortUtil; :\"0jQ.y|  
4joE"H6  
/** )x/#sW%)  
* @author treeroot z f SE7i0  
* @since 2006-2-2 X<;.  
* @version 1.0 "PI;/(kR  
*/ 4}; @QFT*  
public class SelectionSort implements SortUtil.Sort { '1b 1N5~  
Pqya%j  
/* lUEbxN  
* (non-Javadoc)  1}=D  
* LQPQ !):;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Ac,F6w  
*/ -@w,tbc$  
public void sort(int[] data) { ~+4lmslR  
int temp; 9t\14tVwx  
for (int i = 0; i < data.length; i++) { %MHL@Nn>e  
int lowIndex = i; iptA#<Yj  
for (int j = data.length - 1; j > i; j--) { n&;JW6VQS  
if (data[j] < data[lowIndex]) { 7w) 8s  
lowIndex = j; cDz@3So.b  
} 1sj7]G]`k  
} K _VIk'RB  
SortUtil.swap(data,i,lowIndex); ~wW]ntZm  
} ' /HShS!d  
} )?[7}(4jI  
f<bB= 9J  
} )m7%cyfC  
WMtFXkf6"  
Shell排序: -&2Z/qM&!  
1M??@@X  
package org.rut.util.algorithm.support; j_90iP^5:  
SnFyK5  
import org.rut.util.algorithm.SortUtil; [IOI&`?D  
cOP'ql{"  
/**  <Y"RsW9  
* @author treeroot O oA!N-Q  
* @since 2006-2-2 <T[LugI  
* @version 1.0 E6~VHQa2?  
*/ 3:jxr  
public class ShellSort implements SortUtil.Sort{ zS;ruK%2  
m=9b/Nr4  
/* (non-Javadoc) n+=qT$w)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tP|/Q 5s  
*/ $5G(_   
public void sort(int[] data) { 8+w*,Ry`  
for(int i=data.length/2;i>2;i/=2){ Nxe1^F33  
for(int j=0;j insertSort(data,j,i); L-?ty@-i  
} tdRvg7v,N%  
} K]$PRg1| 3  
insertSort(data,0,1); }TMO>eB'  
} dnD@BQ  
ZJs~,Q  
/** *RS/`a;,  
* @param data bI0xI[#Q  
* @param j A-4;$ QSm  
* @param i AAa7)^R  
*/ >C_G~R  
private void insertSort(int[] data, int start, int inc) { #^VZJ:2=|  
int temp; 7 w,D2T  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hA 5p'a+K  
} &'^.>TJ\  
} %N&.B  
} )I*(yUj  
#:BkDidt2v  
} <Mvni z  
m BvO<?ec  
快速排序: JqO1 a?H  
3\}u#/Vb  
package org.rut.util.algorithm.support; |qe;+)0>K  
&X:;B'   
import org.rut.util.algorithm.SortUtil; ,(q] $eOZ  
yH" i5L9  
/** FW8Zpr!u  
* @author treeroot ,!Q nh:  
* @since 2006-2-2 Y)/|C7~W  
* @version 1.0 3 orZBT  
*/ QBGm)h?=  
public class QuickSort implements SortUtil.Sort{ r}qDvC D  
PY_8*~Z  
/* (non-Javadoc) O0jOI3/P%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =$4I}2  
*/ |Io:D:  
public void sort(int[] data) { }&/>v' G  
quickSort(data,0,data.length-1); U%bm{oVn  
} &Cb,C+q  
private void quickSort(int[] data,int i,int j){ 8GW+:  
int pivotIndex=(i+j)/2;  &ox  
file://swap ',g%L_8Sq  
SortUtil.swap(data,pivotIndex,j); zx<PX  
OR6vA5J  
int k=partition(data,i-1,j,data[j]); @.E9 ml  
SortUtil.swap(data,k,j); `Gv\"|Gn  
if((k-i)>1) quickSort(data,i,k-1); c=+%][21  
if((j-k)>1) quickSort(data,k+1,j); BA1H)%  
eb`3'&zV&)  
} wG MhKZE  
/** P\K#q%8  
* @param data Pa0W|q#?X  
* @param i !0hyp |F:>  
* @param j >6yQuB  
* @return py7Zh%k  
*/ ppn  8  
private int partition(int[] data, int l, int r,int pivot) { tn Ufi8\ob  
do{ 67&IaDts  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?" 4X&6xl  
SortUtil.swap(data,l,r); >)C7IQ/  
} PEEaNOk 1b  
while(l SortUtil.swap(data,l,r); eE'>kP}  
return l; ^@8XJ[C,_  
} bP-(N14x+  
;/kd.Q  
} a]fFR~ OY  
0 cKsGDm  
改进后的快速排序: @` Pn<_L  
wxcJ2T dH  
package org.rut.util.algorithm.support; I2HV{1(i  
iCpm^XT  
import org.rut.util.algorithm.SortUtil; y "+'4:_  
#2i$:c~  
/** 1@{ov!YB]  
* @author treeroot j?*n@'   
* @since 2006-2-2 w^8Q~ 3|7  
* @version 1.0 'Up75eT  
*/ USEmD5q  
public class ImprovedQuickSort implements SortUtil.Sort { &Qda|  
VtzZ1/J E  
private static int MAX_STACK_SIZE=4096; ){P`-ZF  
private static int THRESHOLD=10; p/_W*0/i  
/* (non-Javadoc) Txo{6nd/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hk+44   
*/ r6\g #}  
public void sort(int[] data) { KO8vUR*2R  
int[] stack=new int[MAX_STACK_SIZE]; [dLc+h1{B  
yn ofDGAf  
int top=-1; 6{i0i9Tb  
int pivot; MHWc~@R  
int pivotIndex,l,r; <H] PP6_g:  
H#GR*4x  
stack[++top]=0; ;p*L(8<YI  
stack[++top]=data.length-1; XOqHzft h6  
i| cA)  
while(top>0){ _:Q^mV=;j  
int j=stack[top--]; #]+BIr`  
int i=stack[top--]; )x [=}0C  
<5KoK!H  
pivotIndex=(i+j)/2; Z\C"/j<y  
pivot=data[pivotIndex]; XdIno}pN  
7ojh=imY  
SortUtil.swap(data,pivotIndex,j); exSwx-zxI  
PJKY$s.  
file://partition EhO\N\p(Q=  
l=i-1; J%ws-A?6rN  
r=j; @.cord`  
do{ Kg2@]J9m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (*eX'^Q)d  
SortUtil.swap(data,l,r); |:(BI5&S  
} p({|=+bl  
while(l SortUtil.swap(data,l,r); 0|va}m`<3G  
SortUtil.swap(data,l,j); P/~dY  
,agkV)H  
if((l-i)>THRESHOLD){ 0j;|IU\  
stack[++top]=i; `m AYK)N  
stack[++top]=l-1; i)@vHh82  
} )I<VH +6  
if((j-l)>THRESHOLD){ WR.7%U';  
stack[++top]=l+1; 4mBM5Tv  
stack[++top]=j; $?: -A  
} Q!~1Xc0S`p  
_mdJIa0D6k  
} Tz& cm =  
file://new InsertSort().sort(data); ND9;%<80  
insertSort(data); `,GFiTPd  
} .*FlB>1jy  
/** FGwgSrXL7  
* @param data <9=RLENmY"  
*/ cEJ_z(\=hr  
private void insertSort(int[] data) { E.VEW;=  
int temp; N9)ERW2`*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nYRD>S?uz  
} qj*BV  
} 5hCfi  
} ?K}KSJ6_  
Z.>?Dt  
} =g@hh)3wP  
-IV-"-6(  
归并排序: n |,}   
SR)@'-Wd  
package org.rut.util.algorithm.support; ^n]?!BdU  
XnvaT(k7Y  
import org.rut.util.algorithm.SortUtil; >W8PLo+i  
HZ2zL17  
/** L?y,xA_  
* @author treeroot T?5F0WKi  
* @since 2006-2-2 -H_7GVSnl  
* @version 1.0 } % |GV  
*/ 9>@"W-  
public class MergeSort implements SortUtil.Sort{ ~u-`L+G"6  
gD fVY%[Z  
/* (non-Javadoc) U`'w{~"D%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GHWpL\A{8`  
*/ WHF:> 0B  
public void sort(int[] data) { Ipmr@%~  
int[] temp=new int[data.length]; .^1=*j(;  
mergeSort(data,temp,0,data.length-1); 2I39fZa  
} & l|B>{4v  
c Ky%0oTla  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1$2Rs-J  
int mid=(l+r)/2; AB#hh i#  
if(l==r) return ; tbk9N( R  
mergeSort(data,temp,l,mid); L,X6L @Q  
mergeSort(data,temp,mid+1,r); 2W~2Hk=0+%  
for(int i=l;i<=r;i++){ /ci.IT$Q^  
temp=data; ~E`A,  
} )5V1H WjU  
int i1=l; $S cjEG:6  
int i2=mid+1; )d1,}o  
for(int cur=l;cur<=r;cur++){ Vgm{=$  
if(i1==mid+1) I2l'y8)d  
data[cur]=temp[i2++]; bFx?HM.AGW  
else if(i2>r) KJkcmF}Q  
data[cur]=temp[i1++]; y! 1NS  
else if(temp[i1] data[cur]=temp[i1++]; `")  I[h  
else I5"=b}V5  
data[cur]=temp[i2++]; XAFTLNV>  
} D 7E^;W)H  
} BR%:`uiQ<  
fu&]t8MJC  
} bU,& |K/  
lJ,s}l7  
改进后的归并排序: 3a S>U #  
4'8.f5  
package org.rut.util.algorithm.support; ";. 3+z  
Z,&ywMm/G  
import org.rut.util.algorithm.SortUtil; t-Fl"@s  
z'I0UB#  
/** MdfkC6P  
* @author treeroot U5PCj ]-Xt  
* @since 2006-2-2 v>P){VT  
* @version 1.0 Y+7v~/K=  
*/ 0nd<6S+fs  
public class ImprovedMergeSort implements SortUtil.Sort { cK } Qu  
t8[:}[Jx  
private static final int THRESHOLD = 10; 0&-sz=L  
2gv(`NKYE  
/* Q&LkST-i  
* (non-Javadoc) 8| /YxF<  
* J{ Vl2P?@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uQNoIy J)  
*/ wDG4rN9x  
public void sort(int[] data) { YD%Kd&es  
int[] temp=new int[data.length]; RPWYm  
mergeSort(data,temp,0,data.length-1); KP(Bu0S  
} }1P  
&Hqu`A/^  
private void mergeSort(int[] data, int[] temp, int l, int r) { G~Sfpf  
int i, j, k; "8I4]'  
int mid = (l + r) / 2; kShniN  
if (l == r) Kna'5L5"  
return; ;sf/tX  
if ((mid - l) >= THRESHOLD) VGq]id{*$  
mergeSort(data, temp, l, mid); 2P}RZvUd  
else V_kE"W)  
insertSort(data, l, mid - l + 1); '9gI=/29D  
if ((r - mid) > THRESHOLD) >A/=eW/q  
mergeSort(data, temp, mid + 1, r); KPhqD5, (  
else *GhRU5  
insertSort(data, mid + 1, r - mid); BTyVfq sx  
loJ0PY'}=  
for (i = l; i <= mid; i++) { wGH@I_cy>  
temp = data; DPOPRi~  
} Ah`dt8t  
for (j = 1; j <= r - mid; j++) { 4@I]PG  
temp[r - j + 1] = data[j + mid]; u/f&Wq/  
} a6d KQ3D  
int a = temp[l]; I'C ,'  
int b = temp[r]; :Eyv==  
for (i = l, j = r, k = l; k <= r; k++) { 5,Y2Lzr  
if (a < b) { K;PpS*!  
data[k] = temp[i++]; di 5_5_$`o  
a = temp; A@OV!DJe]  
} else { 1c!},O  
data[k] = temp[j--]; ~}*;Ko\  
b = temp[j]; 0Pk-FSY|f  
} Izu.I_$4  
} `^kST><  
} ?r<F\rBT7*  
%"zJsYQ!  
/** Biwdb  
* @param data Fe .*O`  
* @param l  P+0xi  
* @param i [4 j;FN Fa  
*/ v3Yj2LSqx  
private void insertSort(int[] data, int start, int len) { bB-v ar  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9_3M}|V$^e  
} &?6w 2[}  
} \tx/!tA  
} eZi<C}z  
} $@)d9u cd  
HV.7IyBA^  
堆排序: X;:xGZ-oY  
+kL(lBv'  
package org.rut.util.algorithm.support; ex458^N_  
]o$/xP  
import org.rut.util.algorithm.SortUtil; rUjr'O0  
Pa +BE[z  
/** ,m,vo_Ub  
* @author treeroot (xed(uFEK  
* @since 2006-2-2 +.I'U9QeUN  
* @version 1.0 $4L3y uH  
*/ 2\de |'  
public class HeapSort implements SortUtil.Sort{ ~*Qpv&y)  
m 9@n  
/* (non-Javadoc) 1 7oxD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ($> 0&w  
*/ ;7k7/f:  
public void sort(int[] data) { >>zoG3H!  
MaxHeap h=new MaxHeap(); /g''-yT7#  
h.init(data); ASw |sw  
for(int i=0;i h.remove(); ':]a.yA\1  
System.arraycopy(h.queue,1,data,0,data.length); N-E`go  
} S45>f(!  
5i#w:O\cz  
private static class MaxHeap{ ^^l"brPa  
|81N/]EER  
void init(int[] data){ 6~W E#z_  
this.queue=new int[data.length+1]; o q)"1  
for(int i=0;i queue[++size]=data; d A{Jk  
fixUp(size); |"w<CK lQ  
} C/Bx_j((  
} /8\&f %E  
+Uq:sfj,  
private int size=0; 1C=P#MU`  
FSs$ ] d;  
private int[] queue; $:II @=  
#9VY[<  
public int get() { #/<Y!qV&  
return queue[1]; 4 GW[GT  
} g}QTZT8  
1iL xXd  
public void remove() { }F6b ]  
SortUtil.swap(queue,1,size--); G | oG:  
fixDown(1); }tO<_f))  
} G!%XQ\a!  
file://fixdown C /XyDbH  
private void fixDown(int k) { l>Ja[`X@  
int j; y4rJ-  
while ((j = k << 1) <= size) { Z3>3&|&  
if (j < size %26amp;%26amp; queue[j] j++; _)2TLA n3  
if (queue[k]>queue[j]) file://不用交换 XYF~Q9~  
break; VQMd[/  
SortUtil.swap(queue,j,k); |o=ST  
k = j; t`t:qko  
} 5XO'OSdYq  
} eAKQR  
private void fixUp(int k) { BV?N_/DXp  
while (k > 1) { e7qMt[.  
int j = k >> 1; M;V#Gm  
if (queue[j]>queue[k]) s^'#"`!v=  
break; F6]!?@  
SortUtil.swap(queue,j,k); 4~YQ\4h=  
k = j; t0d '>  
} {}&f\6OI%  
} Z;SG<  
R${4Q1  
} lY9M<8g  
N%|Vzc  
} xh^ZI6L<  
edk9Qd9  
SortUtil: _XNR um4  
<sYw%9V  
package org.rut.util.algorithm; 7C7(bg,7^  
 / !  
import org.rut.util.algorithm.support.BubbleSort; o+Ti$`2<O7  
import org.rut.util.algorithm.support.HeapSort; ur,"K' w  
import org.rut.util.algorithm.support.ImprovedMergeSort; bTy)0ta>AF  
import org.rut.util.algorithm.support.ImprovedQuickSort; <;0N@  
import org.rut.util.algorithm.support.InsertSort; A6y~_dt  
import org.rut.util.algorithm.support.MergeSort; Hs -.83V  
import org.rut.util.algorithm.support.QuickSort; _QUu'zJ  
import org.rut.util.algorithm.support.SelectionSort; \If!5N  
import org.rut.util.algorithm.support.ShellSort; &\ lS  
$o$Ev@mi  
/** jsi#l  
* @author treeroot c$<O0dI  
* @since 2006-2-2 7  cP[o+  
* @version 1.0 vJAAAS  
*/ G[<[#$(  
public class SortUtil {  [Ro0eH  
public final static int INSERT = 1; /Q>{YsRRB  
public final static int BUBBLE = 2; 3/IWO4?_  
public final static int SELECTION = 3; <bXWkj  
public final static int SHELL = 4; S]%U]  
public final static int QUICK = 5; Dw/Gha/  
public final static int IMPROVED_QUICK = 6; \R>5F\ 0  
public final static int MERGE = 7; xnuv4Z}]t  
public final static int IMPROVED_MERGE = 8; mc=! X  
public final static int HEAP = 9; .Jat^iFj0  
Q()RO*9  
public static void sort(int[] data) { -1r & s  
sort(data, IMPROVED_QUICK); ji)4WG/1  
} d7tD|[(J  
private static String[] name={ SAE '?_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cvXI]+`<3\  
}; .6 ?>t!&W  
} .H Fm'p  
private static Sort[] impl=new Sort[]{ &J/4J  
new InsertSort(), G9y12HV  
new BubbleSort(), dMs39j  
new SelectionSort(), {F6dSF`  
new ShellSort(), :n>ccZeMv  
new QuickSort(), *[1u[H9Cv  
new ImprovedQuickSort(), +=*m! 7Mr  
new MergeSort(), &;h~JS=  
new ImprovedMergeSort(), 6:@t=C  
new HeapSort()  e(;`9T  
}; 'UvS3]bSYW  
@wdB%  
public static String toString(int algorithm){ qzlMn)e  
return name[algorithm-1]; zhX`~){N6  
} HMS9y%zl/  
Z(k\J|&9C  
public static void sort(int[] data, int algorithm) { jle%|8m&@  
impl[algorithm-1].sort(data); ci_v7Jnwo  
} Bpm5dT;  
Xlqz8cI  
public static interface Sort { T ^%n!t  
public void sort(int[] data); FH`'1iVH  
} o&XMgY~  
w^'?4M!  
public static void swap(int[] data, int i, int j) { .xLF}{u  
int temp = data; ,8xP8T~Kmv  
data = data[j]; SC $`  
data[j] = temp; DYT -#Ht  
} aa0`y  
} o ,Tr^e$  
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