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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。 m%6VwV7U  
插入排序: %M`48TW)  
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package org.rut.util.algorithm.support; 5QiQDQT}5  
!'H$08Ql}  
import org.rut.util.algorithm.SortUtil; hdDT'+  
/** '4uu@?!dVk  
* @author treeroot i2Wvu3,D3-  
* @since 2006-2-2 b*Y Wd3  
* @version 1.0 @Fc:9a@  
*/ US$$ADq  
public class InsertSort implements SortUtil.Sort{ %>$<s<y  
?JZ$M  
/* (non-Javadoc) g4A{RI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e@vtJaSu  
*/ ]mMJ6n  
public void sort(int[] data) { 9:p-F+  
int temp; Aax;0qGbH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l~"T>=jq3  
} KAnV%j  
} jh/,G5RM9  
} BP9#}{kE  
YH\9Je%jx  
} ~yJ2@2I  
qt}M&=}8Q  
冒泡排序: kQmkS^R  
"jAd.x?X7e  
package org.rut.util.algorithm.support; bg Ux&3  
$.vm n,:.  
import org.rut.util.algorithm.SortUtil; ,jRAVt +{N  
nsI+04[F  
/** Mw0>p5+ cy  
* @author treeroot DURWE,W>  
* @since 2006-2-2 8GP17j  
* @version 1.0 > T *`Y0P  
*/ @[lMh9`  
public class BubbleSort implements SortUtil.Sort{ Bh&pZcm|  
3q'AgiW  
/* (non-Javadoc) d~~kJKK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e4` L8  
*/ 3A`Gx#  
public void sort(int[] data) { e%[*NX/  
int temp; At\(/Z y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1<G+KC[F  
if(data[j] SortUtil.swap(data,j,j-1); x.-d)]a!  
} ?Ujg.xo\  
} RKP, w %  
} jae9!W i  
} /-p!|T}w  
 E4eX fu  
} 14 & KE3`  
^i%S}VK  
选择排序: (|BY<Ac3  
Ip'tB4Mq  
package org.rut.util.algorithm.support; ]i#p2?BR  
bq ED5;d'#  
import org.rut.util.algorithm.SortUtil; nx'c=gp  
O=3/ qs6m  
/** \I!mzo  
* @author treeroot 0 cycnOd  
* @since 2006-2-2 m}'_Poc  
* @version 1.0 g$s;;V/8e  
*/ ZHK>0>;  
public class SelectionSort implements SortUtil.Sort { ;Xt <\^e  
."+lij=56  
/* ~gpxK{  
* (non-Javadoc) Kd-1EU  
* -qj[ck(y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rk8pL[|  
*/ o^/ #i`)  
public void sort(int[] data) { |@AXW   
int temp; X6cn8ak 3  
for (int i = 0; i < data.length; i++) { [@Ac#  
int lowIndex = i; X8*g#lO?  
for (int j = data.length - 1; j > i; j--) { -F7F 6!s  
if (data[j] < data[lowIndex]) { J.yM@wPS>  
lowIndex = j; G[mqLI{q  
} Lyhuyb)k5^  
}  ?CAU+/  
SortUtil.swap(data,i,lowIndex); - UkK$wP5  
} c;kU|_  
} -i8KJzPL f  
`0NU c)`  
} /u$'=!<b;  
==[(Mn,%d  
Shell排序: KdCrI@^  
Xd+H()nR  
package org.rut.util.algorithm.support; vb=]00c  
Y2DL%'K^  
import org.rut.util.algorithm.SortUtil;  tA#$q;S  
*|=D 0  
/** SxY z)aF~  
* @author treeroot i]c{(gd`  
* @since 2006-2-2 Rv&"h_"t  
* @version 1.0 jg?UwR&  
*/ 'u<e<hU  
public class ShellSort implements SortUtil.Sort{ G^Gs/- f  
U"7o;q  
/* (non-Javadoc) X_2N9$},  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w80X~  
*/ K(?V]Mxl6  
public void sort(int[] data) { dq '2y  
for(int i=data.length/2;i>2;i/=2){ 9}6_B|  
for(int j=0;j insertSort(data,j,i); mEJ7e#  
} ]pvHsiI:  
} MZz9R*_VS  
insertSort(data,0,1); Rmw=~NP5  
} z}Cjk6z@  
@4;'>yr(  
/** lBfthLBa  
* @param data 5$ =[x!x  
* @param j tKt}]KHV  
* @param i ]00s o`  
*/ \$_02:#  
private void insertSort(int[] data, int start, int inc) { Ln# o:"E  
int temp; 6!]@ S|vDX  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @_C]5D^J^~  
} &`qYe)1Eo  
} TAUl{??,  
} 4+hNP'e  
aA4RC0'  
} iAH,f5T  
[k$GUU,jY  
快速排序: lW c[Q1  
~Fb@E0 }!  
package org.rut.util.algorithm.support; |X=p`iz1&  
rpiuFst  
import org.rut.util.algorithm.SortUtil; c \??kQH  
yc*cT%?g  
/** 0Ye/  
* @author treeroot 0hoMf=bb$  
* @since 2006-2-2 d`= ~8`  
* @version 1.0 sGY}(9ED;  
*/ C)U4Fr ?E:  
public class QuickSort implements SortUtil.Sort{ M1eh4IVE?  
sR/Y v  
/* (non-Javadoc) ""7H;I&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e&x)g;bn  
*/ <ci(5M  
public void sort(int[] data) { 1T#-1n%[k(  
quickSort(data,0,data.length-1); DPf].i#  
} cI[i v  
private void quickSort(int[] data,int i,int j){ gqv+|:#  
int pivotIndex=(i+j)/2; IER;d\_V<  
file://swap ;cVK2'  
SortUtil.swap(data,pivotIndex,j); igQzL*X  
j(y<oxh  
int k=partition(data,i-1,j,data[j]); #MY oy7=  
SortUtil.swap(data,k,j); i]<@  
if((k-i)>1) quickSort(data,i,k-1); fL| 9/sojz  
if((j-k)>1) quickSort(data,k+1,j); yr+QV:oVA  
O h e^{:  
} (.$$U3\  
/** {qHQ_ _Bl  
* @param data YQD `4ND  
* @param i X}'rPz\Lu  
* @param j HB p??.r  
* @return _kBmKE  
*/ n}Z%-w$K#  
private int partition(int[] data, int l, int r,int pivot) { R>"pJbS;L  
do{ L<dh\5#p9Y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pbG-uH^  
SortUtil.swap(data,l,r); fP<== DK  
} }N9PV/a  
while(l SortUtil.swap(data,l,r); %S^ke`MhF  
return l; 5:38}p9`  
} pImq< Z  
U`) " ;WN  
} s>L-0vG  
<q'?[aKvR  
改进后的快速排序:  zr ez*  
;L:UYhDbUx  
package org.rut.util.algorithm.support; oTvg%bX  
5dv|NLl  
import org.rut.util.algorithm.SortUtil; 1;m?:|6K{  
AM?ZhM  
/** lFuW8G,-f@  
* @author treeroot k @fxs]Y_L  
* @since 2006-2-2 )r"R  
* @version 1.0 15_"U+O(/  
*/ @B0fRG y  
public class ImprovedQuickSort implements SortUtil.Sort { L__{U_p  
,8DC9yM,  
private static int MAX_STACK_SIZE=4096; W ~MNst?  
private static int THRESHOLD=10; 0>m$e(Z  
/* (non-Javadoc) alRz@N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5n>zJ ~  
*/ MX*4d{l  
public void sort(int[] data) { lre(]oBXA  
int[] stack=new int[MAX_STACK_SIZE]; \=RV?mI3?  
_H U>T  
int top=-1; {6LS$3}VM  
int pivot; 6 [bQ'Ir^8  
int pivotIndex,l,r; N\ <riS9  
}qGd*k0F0  
stack[++top]=0; L|{vkkBo  
stack[++top]=data.length-1; -^_^ByJe  
: HU|BJ>  
while(top>0){ qCVb-f  
int j=stack[top--]; w:I!{iX  
int i=stack[top--]; >G1]#'6;  
<b~~X`Z  
pivotIndex=(i+j)/2; VSO(DCr"L  
pivot=data[pivotIndex]; KKk<wya&O  
YA+R!t:F{  
SortUtil.swap(data,pivotIndex,j); d?5oJ'JU  
F'wG%  
file://partition 9[~.{{Y  
l=i-1; PQi(Oc  
r=j; l^tRy_T:-  
do{ Z[ !kEW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BSkmFd(*  
SortUtil.swap(data,l,r); n2o)K;wW+  
} NHU5JSlB  
while(l SortUtil.swap(data,l,r); ;<o?JM  
SortUtil.swap(data,l,j); @@3 NSKA  
$2]>{g  
if((l-i)>THRESHOLD){ BQ,749^S  
stack[++top]=i;  f^}n#  
stack[++top]=l-1; g9Dynm5  
} HXh:8 3  
if((j-l)>THRESHOLD){ C5KUIOg  
stack[++top]=l+1; kxrYA|x  
stack[++top]=j; SPe%9J+  
} WOgkv(5KN  
Nj?Q{ztS  
} PXl%"O%d  
file://new InsertSort().sort(data); Q4Wz5n1yp7  
insertSort(data); sWTa;Qi  
} VeEa17g&  
/** ) C\/(  
* @param data )`<&~>qp  
*/ `p)U6J  
private void insertSort(int[] data) { 25 U+L  
int temp; -oZw+ge}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T#e|{ZCbq  
} N3Q .4? z9  
} am 'K$s  
} W3('1  
]T40VGJ:h  
} o*~=NoR  
O<AGAD  
归并排序: <v\$r2C*  
wqjR-$c  
package org.rut.util.algorithm.support; r~|7paX!  
ifl LY7j  
import org.rut.util.algorithm.SortUtil; H7drDw  
\,m*CYs`  
/** hZ|0<u  
* @author treeroot -:!Wds  
* @since 2006-2-2 r|z B?9Q  
* @version 1.0 G ` eU   
*/ >,Zn~8&Z  
public class MergeSort implements SortUtil.Sort{ W}k/>V_  
hVz]' ,  
/* (non-Javadoc) qm9=Ga5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aU.!+e%_  
*/ EpT^r8I  
public void sort(int[] data) { 8B "^}y\0  
int[] temp=new int[data.length]; 'aeuL1mz  
mergeSort(data,temp,0,data.length-1); P~&J@8)c  
} Aj/EaIq  
Y~r)WV!G  
private void mergeSort(int[] data,int[] temp,int l,int r){ wrJ" (:VZ  
int mid=(l+r)/2; ?{L'd  
if(l==r) return ; 2h@&yW2j  
mergeSort(data,temp,l,mid); ww+,GnV  
mergeSort(data,temp,mid+1,r); A&ceuu  
for(int i=l;i<=r;i++){ Rb^G~82d?  
temp=data; sw:a(o&$  
} m.gv?  
int i1=l; ;Ob^@OM  
int i2=mid+1; roi,?B_8  
for(int cur=l;cur<=r;cur++){ 7 > _vH]  
if(i1==mid+1) BEAY}P(y3  
data[cur]=temp[i2++]; 0=9$k  
else if(i2>r) q&:%/?)x  
data[cur]=temp[i1++]; IQ$6}.  
else if(temp[i1] data[cur]=temp[i1++]; wZ`*C mr  
else ]X X>h~0  
data[cur]=temp[i2++]; {EVy.F  
} %n,_^voE  
} !F Zg' 9  
C0^r]^$Z  
} $EdL^Q2KAy  
fU.z_ T[@  
改进后的归并排序: n b*`GE  
7pyaHe  
package org.rut.util.algorithm.support; s gZlk9x!Q  
6 !Mm")  
import org.rut.util.algorithm.SortUtil; qd'Z|'j  
soLmr's  
/** V HLNJnA  
* @author treeroot Hh&qjf  
* @since 2006-2-2 IO2@^jup  
* @version 1.0 oe=1[9T"  
*/ @L 6)RF  
public class ImprovedMergeSort implements SortUtil.Sort { 8RVRfy,w  
0hXx31JN N  
private static final int THRESHOLD = 10; w)R5@ @C*  
fL-$wK<p<  
/* .jbxA2  
* (non-Javadoc) ,nV4%Aa  
* @ W,<8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nYBa+>3BDf  
*/ \zDs3Hp  
public void sort(int[] data) { 5Z:qU{[  
int[] temp=new int[data.length]; 0xeY0!ux  
mergeSort(data,temp,0,data.length-1); d*U<Ww^q  
} Ue>{n{H"y  
*.T?#H  
private void mergeSort(int[] data, int[] temp, int l, int r) { oDt{;S8|]  
int i, j, k; R`Hy0;X  
int mid = (l + r) / 2;  BJg  
if (l == r) 8WKY 4nkj  
return; /*M3Ns1@2  
if ((mid - l) >= THRESHOLD) aej'cbO  
mergeSort(data, temp, l, mid); i If?K%M7  
else L7.SH#m  
insertSort(data, l, mid - l + 1); `9T5Dem|#  
if ((r - mid) > THRESHOLD) /cvMp#<]  
mergeSort(data, temp, mid + 1, r); Nz; \PS  
else _~F 0i?  
insertSort(data, mid + 1, r - mid); =)w#?DGpj  
wAL}c(EHO  
for (i = l; i <= mid; i++) { #veV {,g  
temp = data; .2ZFJ.Z"  
} H9!q)qlK  
for (j = 1; j <= r - mid; j++) { OpK_?XG  
temp[r - j + 1] = data[j + mid]; (zk/>Ou  
} ekmWYQ ~  
int a = temp[l]; uK ,W  
int b = temp[r]; :V_UJ3xf  
for (i = l, j = r, k = l; k <= r; k++) { F'B0\v =  
if (a < b) { J`{  o`>  
data[k] = temp[i++]; n@q- f-2  
a = temp; }O| 9Qb  
} else { <jM { <8-  
data[k] = temp[j--]; d..JW{  
b = temp[j]; _qo\E=E  
} i1bmUKZ8'L  
} #ZP;] W  
} }-u%6KZ   
cF?0=un  
/** )V_;]9<wt  
* @param data B$ho g_=s  
* @param l +m/n~-6q  
* @param i M9Nr/jE  
*/ :l?mNm5  
private void insertSort(int[] data, int start, int len) { Bx5kqHp^1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q[/pE7FL  
} OEC/'QOae  
} }u{gQlV  
} k*Aee7  
} $2-_j)+  
S.<4t*,  
堆排序: wTG(U3{3K  
O}}rosA  
package org.rut.util.algorithm.support; qL[ SwEc  
Y hC|hDC  
import org.rut.util.algorithm.SortUtil; l@-h.tS  
(=EDqAZg  
/** >vO+k^'Y  
* @author treeroot JZ&_1~Z=  
* @since 2006-2-2 aeAx0yE[p  
* @version 1.0 )8SWU)/  
*/ <$WS~tTz  
public class HeapSort implements SortUtil.Sort{ dep"$pys>  
sH > zsc  
/* (non-Javadoc) J(w FJg\/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m - hZ5 i  
*/ 8%xBSob{j  
public void sort(int[] data) { 1-&L-c.  
MaxHeap h=new MaxHeap(); fc[_~I'  
h.init(data); 8B5WbS fL^  
for(int i=0;i h.remove(); Z_ Y'#5o#  
System.arraycopy(h.queue,1,data,0,data.length); l\uNh~\  
} *JQ*$$5  
1X9s\JKQ  
private static class MaxHeap{ g#cet{>  
evNe6J3  
void init(int[] data){ g-]~+7LL  
this.queue=new int[data.length+1]; *-{|m1P  
for(int i=0;i queue[++size]=data; m4Ue)  
fixUp(size); Ndgx@LTQQ  
} U=U5EdN;  
} AYpvGl'  
BBv+*jj  
private int size=0; pVrY';[,|  
2% OAQ(  
private int[] queue; #N'9 w .  
DH.UJ +  
public int get() { W8;!rFW  
return queue[1]; B;W%P.<.  
} jIVDi~Ld  
2A:h&t/|C  
public void remove() { \xv(&94U  
SortUtil.swap(queue,1,size--); G.v(2~QFd  
fixDown(1); {8`$~c  
} k}NM]9EAE  
file://fixdown P8ZmrtQm  
private void fixDown(int k) { Y:, rN  
int j; ?:-:m'jdU  
while ((j = k << 1) <= size) { K}^# VlY9  
if (j < size %26amp;%26amp; queue[j] j++; {IaDZ/XS6  
if (queue[k]>queue[j]) file://不用交换 '3WtpsKA  
break; Pz\K3-  
SortUtil.swap(queue,j,k); $CX3P)% `  
k = j; cDE5/!  
} !\9^|Ef?  
} P=\{  
private void fixUp(int k) { P".IW.^kk~  
while (k > 1) { 4v3gpLH  
int j = k >> 1; ;ko6igx)+  
if (queue[j]>queue[k]) F"O\uo:3  
break; eF9GhwE=  
SortUtil.swap(queue,j,k); VuH ->  
k = j; <JU3sXl  
} "k{so',7z  
} 5gqs"trF  
Y$]zba  
} /F(n%8)Yq  
K7K/P{@9[9  
} o[i N/  
8&| o  
SortUtil: G9yK/g&q  
KAI2[ gs  
package org.rut.util.algorithm; `[U.BVP'  
Y:t?W  
import org.rut.util.algorithm.support.BubbleSort; ]sk=V.GGQ  
import org.rut.util.algorithm.support.HeapSort; o ]z#~^w  
import org.rut.util.algorithm.support.ImprovedMergeSort; a !%,2|U  
import org.rut.util.algorithm.support.ImprovedQuickSort; wWiYxBeN  
import org.rut.util.algorithm.support.InsertSort; a.}#nSYP  
import org.rut.util.algorithm.support.MergeSort; !2l2;?jM  
import org.rut.util.algorithm.support.QuickSort; ck5cO-1>6  
import org.rut.util.algorithm.support.SelectionSort; Qz#By V:  
import org.rut.util.algorithm.support.ShellSort; VJ&<6  
f17E2^(I(}  
/** 'xGhMgR;  
* @author treeroot !$oa6*<1  
* @since 2006-2-2 dS4zOz"  
* @version 1.0 4n7Kz_!SVf  
*/ MJ1qU}+]  
public class SortUtil { Ui`{U  
public final static int INSERT = 1; D5snaGss9a  
public final static int BUBBLE = 2; x5BS|3W$a  
public final static int SELECTION = 3; }9fch9>Zr  
public final static int SHELL = 4; ,}gJY^X+  
public final static int QUICK = 5; $["HC-n?.k  
public final static int IMPROVED_QUICK = 6; ~$5XiY8A  
public final static int MERGE = 7; to</  
public final static int IMPROVED_MERGE = 8; h%ys::\zF  
public final static int HEAP = 9; x]x3iFD  
4oiE@y&{4  
public static void sort(int[] data) { C|TQf8  
sort(data, IMPROVED_QUICK); pka^7OWyN  
} sIg TSdk  
private static String[] name={ ~44u_^a  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d\]KG(T  
}; <KU 0K  
L,y q=%h|  
private static Sort[] impl=new Sort[]{ Yr_ B(n  
new InsertSort(), B=& [Z2  
new BubbleSort(), nLz;L r!  
new SelectionSort(), !~~KM?g  
new ShellSort(), !6=;dX  
new QuickSort(), >,]a>V  
new ImprovedQuickSort(), u0&R*YV  
new MergeSort(), *pa hZiO  
new ImprovedMergeSort(), |7c],SHm  
new HeapSort() K9%rr_ja!  
}; GEc-<`-  
J4::.r  
public static String toString(int algorithm){ ;7:} iKU  
return name[algorithm-1]; Et N,  
} P(k*SB|D  
}={@_g#  
public static void sort(int[] data, int algorithm) { >:6iFPP  
impl[algorithm-1].sort(data); ?5nEmG|kO  
} 7wh4~  
) Su>8f[?e  
public static interface Sort { ?YL J Xq  
public void sort(int[] data); %"mI["{  
} ?g+3 URpK  
VtLRl0/  
public static void swap(int[] data, int i, int j) { J\*uW|=F  
int temp = data; PzSL E>Q  
data = data[j]; g@>llve{  
data[j] = temp; piM4grg \  
} iRsB|7v[,  
} yHw @Z  
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