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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。 }4piZ ch  
插入排序: 4Wvefq"  
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package org.rut.util.algorithm.support; M @G\b^"  
7/KK}\NE  
import org.rut.util.algorithm.SortUtil; f`rI]v|@  
/** Pd;8<UMk  
* @author treeroot x1Z'_Qw  
* @since 2006-2-2 t+pA9^$[ `  
* @version 1.0 uT=5zu  
*/ Z;tWV%F5  
public class InsertSort implements SortUtil.Sort{ ~$//4kES  
S|KUh|=Q  
/* (non-Javadoc) {md5G$* %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NYKYj`K  
*/ ;gAL_/_  
public void sort(int[] data) { pVzr]WFx  
int temp; BW3Q03SW6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b&Laxki  
} '~7zeZ'  
} -2u)orWP  
} 6Hy_7\$(-  
L?M x"  
} $Fi1Bv)  
b?!S$Sxz  
冒泡排序: +Y;hVc E9  
<gFisc/#r  
package org.rut.util.algorithm.support; &Cm]*$?  
" &`>+Yw  
import org.rut.util.algorithm.SortUtil; u(hJyo}  
1`s^r+11:  
/** 6Z=Qs=q  
* @author treeroot 92C; a5s  
* @since 2006-2-2 7hLh}  
* @version 1.0 >o3R~ [  
*/ E{^W-  
public class BubbleSort implements SortUtil.Sort{ a3A3mBw  
sk:B; .z  
/* (non-Javadoc) 4hfq7kq7(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O~?d;.b  
*/ %h,&ND  
public void sort(int[] data) { P0sAq7"  
int temp; @A`j Wao  
for(int i=0;i for(int j=data.length-1;j>i;j--){ c/j+aj0.v  
if(data[j] SortUtil.swap(data,j,j-1); 6kAGOjO  
} @w(|d<5l:L  
} KLu Og$i  
} z6,E} Y  
} e^x%d[sU  
'.gi@Sr5  
} $-jj%kS  
DvLwX1(l  
选择排序: qu'D"0  
bI(8Um6m  
package org.rut.util.algorithm.support; XWNo)#_3  
2AMb-&po&f  
import org.rut.util.algorithm.SortUtil; QctzIC#;k  
35x]'  
/**  n0EW U,1  
* @author treeroot DSq?|H  
* @since 2006-2-2 *(5T?p[7  
* @version 1.0 D#`>p  
*/ C9""sVs  
public class SelectionSort implements SortUtil.Sort { v046  
-0]%#(E%`h  
/* 9KJ}A i  
* (non-Javadoc) 62Tel4u  
* , )TnIByM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %]4=D)Om  
*/ 2 J3/Eu  
public void sort(int[] data) { i]4nYYS  
int temp; .RAyi>\e  
for (int i = 0; i < data.length; i++) { H;q[$EUNb  
int lowIndex = i; ]n"U])pJd  
for (int j = data.length - 1; j > i; j--) { @o#Yq n3Y  
if (data[j] < data[lowIndex]) { Nz*,m'-1e  
lowIndex = j; rQ2TPX<?a  
} !mB `FC  
} C?W}/r[  
SortUtil.swap(data,i,lowIndex); .N# KW  
} vg"*%K$a  
} p=kt+H&;  
{9Ok^O  
} KDV.ZSF7  
a0PU&o1EF  
Shell排序: \[)SK`cwd  
V eY&pPQ  
package org.rut.util.algorithm.support; l]Ym)QP  
5j0 Ib>\  
import org.rut.util.algorithm.SortUtil; Fq o h!F  
}s6Veosl  
/** |YV> #l  
* @author treeroot OQKc_z'"  
* @since 2006-2-2 ,q7FK z{  
* @version 1.0 Zu>-y#Bw  
*/ ;KEie@Ry  
public class ShellSort implements SortUtil.Sort{ =*zde0T?l  
$"MVr5q6  
/* (non-Javadoc) 3u+i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EAxdF u  
*/ ]|=`-)AP3  
public void sort(int[] data) { yx*<c#Uf  
for(int i=data.length/2;i>2;i/=2){ t y4R2LnC  
for(int j=0;j insertSort(data,j,i); 7&%HE\  
} #N~1Y e  
} \j BA4?(S  
insertSort(data,0,1); 0@y`iZ] 1S  
} Q00v(6V46  
QP%Hwt]+  
/** oe3=QE  
* @param data bu $u@:q 6  
* @param j Zg>]!^X8  
* @param i ,w9| ?%S  
*/ 2dHsM'ze  
private void insertSort(int[] data, int start, int inc) { x'OP0],#  
int temp; 3p?nQ O)L  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C+%eT&OO  
} [?qzMFb  
} }QQ 7jE  
} `R7dn/  
X?&{< vz  
} h;y}g/HZ  
Qe4 % A  
快速排序: X%N!gy  
v"mZy,u  
package org.rut.util.algorithm.support; &5z9C=]e  
s16, *;Z  
import org.rut.util.algorithm.SortUtil; H8HVmfM  
#Q-#7|0&  
/** /`nkz  
* @author treeroot ]>*VEe}hJ  
* @since 2006-2-2 piuM#+Y\'S  
* @version 1.0 'O.f}m SS  
*/ & BY\h:  
public class QuickSort implements SortUtil.Sort{ .jC5 y&  
kt\,$.v8  
/* (non-Javadoc) EA9.?F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oo FMOlb.Z  
*/ T}29(xz-(h  
public void sort(int[] data) { XZ3fWcw[  
quickSort(data,0,data.length-1); 6%:~.ZfN  
} ?$uF(>LD  
private void quickSort(int[] data,int i,int j){ P{:Zxli0  
int pivotIndex=(i+j)/2; w:iMrQeJg  
file://swap r ?<kWR?w  
SortUtil.swap(data,pivotIndex,j); Gr)G-zE  
%X}vuE[[UC  
int k=partition(data,i-1,j,data[j]); j8PeO&n>  
SortUtil.swap(data,k,j); 4GG>n  
if((k-i)>1) quickSort(data,i,k-1); #n15_cd  
if((j-k)>1) quickSort(data,k+1,j); =n_z`I  
,oSn<$%/q  
} qN9 ?$\  
/** YktZXc?iI<  
* @param data x>tm[k  
* @param i jt: *Y  
* @param j ;3xi.^=B  
* @return gy~2LY!}  
*/ 11Qi _T\  
private int partition(int[] data, int l, int r,int pivot) { pzUr9  
do{ ~ qaT jSP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *tk=DsRW  
SortUtil.swap(data,l,r); .O(9\3q\  
} >j$aY  
while(l SortUtil.swap(data,l,r); i_*.  
return l; p5w9X+G%  
} #Ufb  
1[#sHj$Na`  
} 1^V.L+0s]  
@Bjp7v :w  
改进后的快速排序: kdx06'4o  
DHuvHK0#  
package org.rut.util.algorithm.support; S'w}Ir  
Y  9z*xS  
import org.rut.util.algorithm.SortUtil; bb\XZ~)F  
3 |LRb/|  
/** 84reyA  
* @author treeroot .3XiL=^~Qp  
* @since 2006-2-2 e 8oAGh"  
* @version 1.0 f&$;iE  
*/ 4K dYiuz0`  
public class ImprovedQuickSort implements SortUtil.Sort { >,'guaa  
=h +SZXe<r  
private static int MAX_STACK_SIZE=4096; }Qe(6'l_  
private static int THRESHOLD=10; K ;]dZ8  
/* (non-Javadoc) + @|u8+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^,vFxN--q  
*/ !Fxn1Z,  
public void sort(int[] data) { +]NpcE'  
int[] stack=new int[MAX_STACK_SIZE]; So e2Gq  
rz-61A) _  
int top=-1; 0aI@m  
int pivot; ,/TmTX--d  
int pivotIndex,l,r; NZADHO@0  
I|K!hQ"m  
stack[++top]=0; :oC;.u<*8  
stack[++top]=data.length-1; P?c V d2Y  
< 1m `  
while(top>0){ o"L8n(\  
int j=stack[top--]; *n# =3D  
int i=stack[top--]; %6^nb'l'C  
Qb%; |li  
pivotIndex=(i+j)/2; 2Q@Jp`# ,4  
pivot=data[pivotIndex]; V m8dX?  
J(maJuY  
SortUtil.swap(data,pivotIndex,j); y;4g>ma0  
=OV5DmVmQ  
file://partition HINk&)FC  
l=i-1; ]q[(z  
r=j; 7bRfkKD  
do{ l,(:~KH|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4}cxSl]jf!  
SortUtil.swap(data,l,r); k\*?<g  
} n5BD0q  
while(l SortUtil.swap(data,l,r); V=5*)i/  
SortUtil.swap(data,l,j); CyHHV  
I8B0@ZtV  
if((l-i)>THRESHOLD){ G|-RscPe  
stack[++top]=i; _h,_HW)G  
stack[++top]=l-1; f#!nj]}#  
} 1q5S"=+W[  
if((j-l)>THRESHOLD){ Q8QB{*4  
stack[++top]=l+1; 0kls/^0,  
stack[++top]=j; $)PS#ND&  
} n _ ?+QF  
,O-_Pv  
} Rbr:Q]zGN  
file://new InsertSort().sort(data); gi5X ,:[  
insertSort(data); +F-Y^):  
} *icaKy3  
/** n+Conp/  
* @param data QJiH^KY6  
*/ x5pu+-h  
private void insertSort(int[] data) { `'3 De(  
int temp; c(FGW7L<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (18ZEKk  
} jOGiT|A  
} 1=sL[I7<  
} _dCDT$^&r  
C"0 VOb  
} HrFbUK@@  
vfx{:3fO  
归并排序: XkoPN]0n  
+t&)Z  
package org.rut.util.algorithm.support; ;V?(j 3b[  
KHC Fz  
import org.rut.util.algorithm.SortUtil;  AW|SD  
"iX\U'`  
/** 0:4>rYBC   
* @author treeroot _K'Y`w']  
* @since 2006-2-2 \+Y=}P>  
* @version 1.0 0c!^=(  
*/ KD+&5=Y  
public class MergeSort implements SortUtil.Sort{ Bj><0 cNF  
4oryTckS  
/* (non-Javadoc) V6((5o#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Knb(MI6  
*/ b2[U3)|oO  
public void sort(int[] data) { OkISR j'!U  
int[] temp=new int[data.length]; yI07E "9  
mergeSort(data,temp,0,data.length-1); Fn4yx~0  
} v UO[V$rx  
5[)#3vY  
private void mergeSort(int[] data,int[] temp,int l,int r){ _Ye.29  
int mid=(l+r)/2; P0OMu/  
if(l==r) return ; >t'A1`W  
mergeSort(data,temp,l,mid); T3SFG]H  
mergeSort(data,temp,mid+1,r); yENAcsv  
for(int i=l;i<=r;i++){ T;{:a-8  
temp=data; T@#?{eA  
} 8 *{jxN'M  
int i1=l; h <$%y(lP  
int i2=mid+1; N `fFYO  
for(int cur=l;cur<=r;cur++){ 0L#i c61U  
if(i1==mid+1) QLHEzEvf{/  
data[cur]=temp[i2++]; <n~.X<6V'  
else if(i2>r) P0hr=/h4  
data[cur]=temp[i1++]; *kTp(*K/7`  
else if(temp[i1] data[cur]=temp[i1++]; ~7g$T Ae{  
else 8Exky^OT|  
data[cur]=temp[i2++]; F|.tn`j]U  
} y x#ub-A8  
} r%X M`;bQX  
W7_m,{q  
} Xc" %-  
=OPX9oG  
改进后的归并排序: `Eu,SvkFw  
kv+^U^WoU  
package org.rut.util.algorithm.support; Lw(tO0b2H  
%0}}Qt  
import org.rut.util.algorithm.SortUtil; 2DJg__("  
/Lm~GmPt  
/** cVO- iPK  
* @author treeroot [cznhIvyO  
* @since 2006-2-2 K{@xZ)  
* @version 1.0 @o'L!5Y  
*/ 83'+q((<  
public class ImprovedMergeSort implements SortUtil.Sort { {+d)M  
3Zyv X]@_  
private static final int THRESHOLD = 10; g`C8ouy  
c9CFGo?)N  
/* .;ofRx<  
* (non-Javadoc) jJt4{c  
* CH| cK8q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5M5vxJ)Lh  
*/ |/%5~=%7  
public void sort(int[] data) { fB,eeT1v?h  
int[] temp=new int[data.length]; $ywROa]  
mergeSort(data,temp,0,data.length-1); 9b,0_IMHH  
} 8tna<Hx  
xWK/uE(  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~ QohP`_  
int i, j, k; g&EK^q  
int mid = (l + r) / 2; Y{#*;p*I  
if (l == r) +( afO ~9  
return; S+wT}_BQ  
if ((mid - l) >= THRESHOLD) ~%M*@ fm  
mergeSort(data, temp, l, mid); dw5"}-D  
else )uR_d=B&  
insertSort(data, l, mid - l + 1); +c C. ZOS  
if ((r - mid) > THRESHOLD) WwtVuc|  
mergeSort(data, temp, mid + 1, r); wpi$-i`  
else P6ktA-Hv>  
insertSort(data, mid + 1, r - mid); f5un7,m  
|_7k*:#q:  
for (i = l; i <= mid; i++) { :& :P4Y1 E  
temp = data; 'wMvO{}$  
} $o\z4_I  
for (j = 1; j <= r - mid; j++) { y&O?`"Uv/M  
temp[r - j + 1] = data[j + mid]; G{>PYLxOb  
} e"bzZ!c&~V  
int a = temp[l]; L$ sENOm  
int b = temp[r]; ) )FLM^dj  
for (i = l, j = r, k = l; k <= r; k++) { J-uQF|   
if (a < b) { |s(Ih_Zn  
data[k] = temp[i++]; l`A&LQ[  
a = temp; 4E2/?3D  
} else { |mbD q\U  
data[k] = temp[j--]; /N<aN9Z<x,  
b = temp[j]; enQW;N1_M  
} a8ouk7 G  
} 6oZHSjC*  
} ]o0]i<:  
WvfM.D!  
/** cS:O|R#%t  
* @param data UpE +WzY  
* @param l }' Y)"8AIA  
* @param i v'Ehr**]+  
*/ e?B}^Dk0i  
private void insertSort(int[] data, int start, int len) { C8T0=o/-`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); p8@&(+z  
} J` gG`?  
} V rx,'/IS8  
} [{GN#W|AGP  
} SDE$ymP x  
GRkN0|ovfj  
堆排序: |>'N^   
9Oq(` 4  
package org.rut.util.algorithm.support; |K{ d5\_  
c?. i;4yh  
import org.rut.util.algorithm.SortUtil; w%X@os}E  
4pQf*l8e  
/** j|&D(]W/  
* @author treeroot 5G(dvM-n  
* @since 2006-2-2 Yo' Y-h#  
* @version 1.0 p=E#!cn3  
*/ C#yRop_d]o  
public class HeapSort implements SortUtil.Sort{ FBB<1({A  
G}+@C]  
/* (non-Javadoc) {I $iD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hwL`9.w  
*/ Z2})n -  
public void sort(int[] data) { u7RlxA:  
MaxHeap h=new MaxHeap(); sP2Uj  
h.init(data); ){'<67dK  
for(int i=0;i h.remove(); /d:hW4}<}.  
System.arraycopy(h.queue,1,data,0,data.length); Y_jc*S  
} D|m3. si  
/VufL+q1  
private static class MaxHeap{ }+pwSjsno  
D& o\q68W  
void init(int[] data){ x0ipk}  
this.queue=new int[data.length+1]; +L.D3  
for(int i=0;i queue[++size]=data; K?! W9lUq  
fixUp(size); _E'}8.#{  
} V]+y*b.60  
} Y~{<Hs  
%g@\SR.  
private int size=0; DC1.f(cdR  
%Y=r5'6l  
private int[] queue; |?Edk7`  
"a~r'+'<  
public int get() { 6k>5+-&_  
return queue[1]; ^-- R#$X  
} cb0rkmO  
Ay 4P_>^  
public void remove() { ")vtS}Ekt  
SortUtil.swap(queue,1,size--); /!?Tv8TPp  
fixDown(1); ;|?_C8  
} @{_X@Wv4iV  
file://fixdown a:UkVK]MP  
private void fixDown(int k) { D]}~`SO  
int j; fmQif]J;;  
while ((j = k << 1) <= size) { \#Jq%nd  
if (j < size %26amp;%26amp; queue[j] j++; -=gI_wLbM  
if (queue[k]>queue[j]) file://不用交换 x7<l*WQ  
break; fKr_u<|  
SortUtil.swap(queue,j,k); v^s?=9  
k = j; 0|j44e }  
} G"-V6CA[  
} D86F5HT}}  
private void fixUp(int k) { U\qbr.<  
while (k > 1) { YsVKdh  
int j = k >> 1; e Ru5/y~  
if (queue[j]>queue[k]) HK<S|6B7V  
break; u pUJF`3  
SortUtil.swap(queue,j,k); 26k~Z}  
k = j; \$DBtq5=  
} CdmpKkq#  
} WoGnJ0N q  
71P. 9Iz  
} ![r)KE=v8I  
0)b1'xt',  
} .JB1#&B +  
F*Hovxez  
SortUtil: Vjt7X"_/  
tx9 %.)M:n  
package org.rut.util.algorithm; tKLeq(  
HpIi-Es7C  
import org.rut.util.algorithm.support.BubbleSort; ILH[q>  
import org.rut.util.algorithm.support.HeapSort; 5EI"5&`*  
import org.rut.util.algorithm.support.ImprovedMergeSort; +2 oZML  
import org.rut.util.algorithm.support.ImprovedQuickSort; cl&?'` )  
import org.rut.util.algorithm.support.InsertSort; ~uZ9%UB_m  
import org.rut.util.algorithm.support.MergeSort; G;u~H<  
import org.rut.util.algorithm.support.QuickSort; MmvOyK NZF  
import org.rut.util.algorithm.support.SelectionSort; $^ ^M&[b-  
import org.rut.util.algorithm.support.ShellSort; B]<N7NYn1  
=FIZh}JD  
/** HDzeotD  
* @author treeroot @}!?}QU  
* @since 2006-2-2 {v=[~H>bt  
* @version 1.0 dnwzf=+>e  
*/ I{U|'a  
public class SortUtil { ts@$*  
public final static int INSERT = 1; G9QvIXRi  
public final static int BUBBLE = 2; H*3u]Ebh  
public final static int SELECTION = 3; Q#ksf h!D  
public final static int SHELL = 4; DA>nYj-s  
public final static int QUICK = 5; *?uUP  
public final static int IMPROVED_QUICK = 6; ;'V[8`Z@  
public final static int MERGE = 7; MMET^SO  
public final static int IMPROVED_MERGE = 8; a`^$xOK,  
public final static int HEAP = 9; n[K%Xs)  
Q{uO/6  
public static void sort(int[] data) { iiJT%Zq`#  
sort(data, IMPROVED_QUICK); @g;DA)!(  
} %++: K  
private static String[] name={ }93FWo.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" eX"Ecl{  
}; z@\mn  
vShB26b  
private static Sort[] impl=new Sort[]{ =+T0[|gc(r  
new InsertSort(), 4h--x~ @  
new BubbleSort(), o_Y?s+~i[/  
new SelectionSort(), VZ`YbY  
new ShellSort(), tS3&&t  
new QuickSort(), AT3HH QD  
new ImprovedQuickSort(), { 6qxg_{  
new MergeSort(), :PY8)39@K  
new ImprovedMergeSort(), ip{ b*@K  
new HeapSort() XfMUodV-OZ  
}; <'sm($.2  
%_p]6doF  
public static String toString(int algorithm){ h]z8.k2n  
return name[algorithm-1]; ZTfW_0   
} gYGoJH1  
UCj+V@{  
public static void sort(int[] data, int algorithm) { sIaehe'B  
impl[algorithm-1].sort(data); >Sk%78={R  
} d`$w3Hy  
+cmi?~KS*  
public static interface Sort { <GQ=PrT|/  
public void sort(int[] data); gjnEN1T22  
} 'IIa,']H  
D5bi)@G7z  
public static void swap(int[] data, int i, int j) { OT|0_d?bD  
int temp = data;  oSy9Xw  
data = data[j];  Q$`uZ  
data[j] = temp; 4%_c9nat  
} MzKl=G  
} 4A(h'(^7A  
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