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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。 ;5/Se"Nd  
插入排序: w5i*pOG)Z  
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package org.rut.util.algorithm.support; z\|<h=EU  
uU)t_W&-J  
import org.rut.util.algorithm.SortUtil; q]="ek&_  
/** E:9RskI  
* @author treeroot &}u_e`A  
* @since 2006-2-2 >&.N_,*  
* @version 1.0 w~+*Vd~U  
*/ 'l/l]26rO4  
public class InsertSort implements SortUtil.Sort{ &MX&5@ Vu  
j EbmW*   
/* (non-Javadoc) 1|p\rHGd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;l;jTb^l  
*/ "Erphn  
public void sort(int[] data) { NuO@N r  
int temp; )j8'6tk)Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oc"p5Y3,Os  
} 'gN[LERT  
} tV=Qt[|@  
} Aa9l-:R  
| d*<4-:  
} r.?dT |A  
a0ms9%Y;Q[  
冒泡排序: ;rf{T[i  
:7(fBf5  
package org.rut.util.algorithm.support; oT}$N_gFT  
d[h=<?E5  
import org.rut.util.algorithm.SortUtil; efyEzL  
;ab[YMkH  
/** 5i6Ji(  
* @author treeroot j/Kul}Ml\*  
* @since 2006-2-2 #sU>L=  
* @version 1.0 k x:+mF  
*/ 8;qOsV)UDT  
public class BubbleSort implements SortUtil.Sort{ mg*iW55g  
NkUY_rKPb  
/* (non-Javadoc) F42^Uoaz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !IJ YaQ6z  
*/ r`ftflNh(  
public void sort(int[] data) { n 'ZPB  
int temp; &DQ_qOKD  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [p4([ef '  
if(data[j] SortUtil.swap(data,j,j-1); rv{Wti[  
} #IppjaPl8  
} VN-0hw/A  
} PdKcDKJ  
} */{y%  
c:=HN-*vQ  
} =?CIC%6m  
"U9e)a0v  
选择排序: =n.&N   
h/5V~ :)  
package org.rut.util.algorithm.support; V~Guw[RA  
Vb\^xdL>  
import org.rut.util.algorithm.SortUtil; #pWy%U  
Zq{gp1WC  
/** #}1yBxB<=  
* @author treeroot :tENn r.9v  
* @since 2006-2-2 h9d*N9!;M  
* @version 1.0 Urw =a$  
*/ #+i5'p(4  
public class SelectionSort implements SortUtil.Sort { A/zAB3  
M\ wCZG  
/* HZ(giAyjq  
* (non-Javadoc) a"cw%L  
* >uJu!+#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UJS vtD{g  
*/ z>W?\[E<2  
public void sort(int[] data) { #Hy9 ;Q  
int temp; f/ 3'lPK^  
for (int i = 0; i < data.length; i++) { -R9{Ak  
int lowIndex = i; UnDX .W*2  
for (int j = data.length - 1; j > i; j--) { 6ZjUC1  
if (data[j] < data[lowIndex]) { XcbEh  
lowIndex = j; 9n5uO[D  
} (;Bh7Ft  
} 6=%\@  
SortUtil.swap(data,i,lowIndex); S!-t{Q+j^  
}  v?d`fd  
} 9QD+  
p*jH5h cy  
} ,*[N_[  
bz1`f>%l  
Shell排序: 'Q* .[aJt  
2*W|s7cc  
package org.rut.util.algorithm.support; uKY1AC__  
L{ej<0yr  
import org.rut.util.algorithm.SortUtil; CT\rx>[J.6  
s4Jy96<  
/** W T @XHwt  
* @author treeroot Vf(..8  
* @since 2006-2-2 OHY|< &*  
* @version 1.0 \"I418T K  
*/ 8VpmcGvc3  
public class ShellSort implements SortUtil.Sort{ ;5|d[r}k3  
sC f)#6mI  
/* (non-Javadoc) ow+_g R-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D3tcwjXoW_  
*/ $;";i:H`  
public void sort(int[] data) { O*F= xG  
for(int i=data.length/2;i>2;i/=2){ 'K23oQwDB  
for(int j=0;j insertSort(data,j,i); k/U rz*O  
} FrRUAoF O  
} N5MWMN[6aP  
insertSort(data,0,1); 2 9z@ !  
} PTQN.[bBh  
=OrVaZ0  
/** DLq'V.M:  
* @param data +Lr`-</VF  
* @param j Eg4&D4TG p  
* @param i nh+h3"-d  
*/ Ix@nRc'  
private void insertSort(int[] data, int start, int inc) { Dz$dJF1 8  
int temp; "-HWw?rx/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {p$X*2ReB  
} 4y)6!p  
} 16ip:/5  
} >qMzQw2  
&`'@}o>2  
} ?wIw$p>wT  
wgQx.8 h>  
快速排序: :VR% I;g;  
=FAIbM>u  
package org.rut.util.algorithm.support; Yru,YA   
*aYuuRx  
import org.rut.util.algorithm.SortUtil; ^ %1u3  
#/t+h#jG  
/** zq$0 ?vGd  
* @author treeroot bdBLfWe  
* @since 2006-2-2 8NWuhRRrw  
* @version 1.0 I,/E.cRV<  
*/ r0<zy_d'  
public class QuickSort implements SortUtil.Sort{ LCSJIt  
uesIkJ^Q[  
/* (non-Javadoc) R2Q1Rk#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =QwT)KRB%  
*/ +}g6X6m  
public void sort(int[] data) { Rx@0EPV  
quickSort(data,0,data.length-1); Co/04F.  
} Wq25,M'  
private void quickSort(int[] data,int i,int j){ ayg^js2,  
int pivotIndex=(i+j)/2; 4`sW_ ks  
file://swap `Gg,oCQg  
SortUtil.swap(data,pivotIndex,j); Eb&=$4c=  
/RF&@NJE5  
int k=partition(data,i-1,j,data[j]); 0 \1g-kc!v  
SortUtil.swap(data,k,j); S""F58 H n  
if((k-i)>1) quickSort(data,i,k-1); bhKe"#m|S  
if((j-k)>1) quickSort(data,k+1,j); 'kJyE9*xU.  
K7,Sr1O `  
} I#(?xHx  
/** K:$GmV9o  
* @param data 3my_Gp  
* @param i 0.~s>xXp  
* @param j E,/nK  
* @return !H zJ*  
*/ 2\"T&  
private int partition(int[] data, int l, int r,int pivot) { .07k G]  
do{ [KEw5-=i@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;IT'6m`@W  
SortUtil.swap(data,l,r); :?gp}.  
} t&o&gb  
while(l SortUtil.swap(data,l,r); %y+v0.aWH+  
return l; bc6|]kB:  
} =>e> r~cW  
+[V.yY/t|>  
} pWeD,!f  
Wm!cjGK  
改进后的快速排序: \ 5#eBJ  
A4)TJY 3g  
package org.rut.util.algorithm.support; 5_rx$avm  
g T0@pxl  
import org.rut.util.algorithm.SortUtil; b~!Q3o'W  
LO,:k+&A+  
/** LoO"d'{  
* @author treeroot  {T5u"U4  
* @since 2006-2-2 }gQnr;lv  
* @version 1.0 $F@ ,,*  
*/ T9YrB  
public class ImprovedQuickSort implements SortUtil.Sort { QOv@rP/  
w*7wSP  
private static int MAX_STACK_SIZE=4096; As|e=ut(  
private static int THRESHOLD=10; i@ehD@.dH  
/* (non-Javadoc) Nfd'|#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nYTPcT4x|  
*/ L}t P_ *  
public void sort(int[] data) { I9sQPa  
int[] stack=new int[MAX_STACK_SIZE]; .bNG:y>  
we33GMxHl`  
int top=-1; u"U7aYGkY  
int pivot; wd2z=^S~  
int pivotIndex,l,r; B*}:YV  
u y13SkW  
stack[++top]=0; U ?6.UtNf  
stack[++top]=data.length-1; }Rq{9j,%  
/kqa|=-`q  
while(top>0){ Sj<]~*y"  
int j=stack[top--]; b%xG^jUXsX  
int i=stack[top--]; }u;`k'J@  
GjX6noqT  
pivotIndex=(i+j)/2; cJ'OqV F  
pivot=data[pivotIndex]; #?DoP]1Y  
( $,qxPOn  
SortUtil.swap(data,pivotIndex,j); N@I=X-7nh|  
CS;4ysNf  
file://partition 5M#L O@U  
l=i-1; L1QDA}6?_Y  
r=j; Eo0/cln|  
do{ ~6#O5plKc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $nNCBC=  
SortUtil.swap(data,l,r); T:*l+<?  
} 0\wW%3C  
while(l SortUtil.swap(data,l,r); ZtX CPA!  
SortUtil.swap(data,l,j); xC 4L`\  
m(^nG_eX  
if((l-i)>THRESHOLD){ /PEL[Os  
stack[++top]=i; : CP,DO  
stack[++top]=l-1; 5wC,:c[H7  
} }`+9ie7]/  
if((j-l)>THRESHOLD){ -7VQ {nC  
stack[++top]=l+1; 2CV?cm  
stack[++top]=j; ,#j'~-5  
} ^MvBW6#1  
se29IhS!e  
} #l!nBY~  
file://new InsertSort().sort(data); pzeCdHF  
insertSort(data); JD]uDuE  
} z2 mjm  
/** `r&]Ydu:  
* @param data a[E}o<{  
*/ 1/J6<FVq  
private void insertSort(int[] data) { vU9:` @beu  
int temp; L fZF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C40o_1g  
} #j)"#1IE2W  
} BCh|^Pk  
} T_fM\jdI  
-]Q\G  
} YRU95K [  
H'&[kgnQ@  
归并排序: plM:7#eA  
,OFNV|S$  
package org.rut.util.algorithm.support; zxeT{AFPr?  
-0P9|;h5  
import org.rut.util.algorithm.SortUtil; ?H eUU  
<,y> W!  
/** e s<  
* @author treeroot TrBW0Bn>p  
* @since 2006-2-2 U|x#'jGo'  
* @version 1.0 [gj>ey8T  
*/ Cl!9/l?z  
public class MergeSort implements SortUtil.Sort{ mB"1QtD  
1o?uf,H7O  
/* (non-Javadoc) 0!M'z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >+):eB L  
*/ T@a|*.V  
public void sort(int[] data) { z#2n+hwE  
int[] temp=new int[data.length];  |^"0bu"  
mergeSort(data,temp,0,data.length-1); )T^xDx  
} i:1 @ vo  
?@;#|^k9  
private void mergeSort(int[] data,int[] temp,int l,int r){ PJ^qE| X  
int mid=(l+r)/2; U_WO<uhC  
if(l==r) return ; IRTD(7"oyp  
mergeSort(data,temp,l,mid); wZWAx  
mergeSort(data,temp,mid+1,r); ;RYIc0%  
for(int i=l;i<=r;i++){ 1:J+`mzpl  
temp=data; IL`=r6\  
} 6w[EJ;=p_  
int i1=l; wOsg,p;\'  
int i2=mid+1; W:K '2j  
for(int cur=l;cur<=r;cur++){ PlCj<b1D:  
if(i1==mid+1) gyuBmY  
data[cur]=temp[i2++]; jwP5pu  
else if(i2>r) 3cF8DNh  
data[cur]=temp[i1++]; w/*m_O\!  
else if(temp[i1] data[cur]=temp[i1++]; 5GGO:  
else 1x%B`d  
data[cur]=temp[i2++]; 7mE9Zo1  
} 8{_lB#<[E  
} lSc=c-iOv  
W6B"QbHYz  
} A WJA?  
QQv%>=_`  
改进后的归并排序: <T&v\DN  
'.&Y)A6!  
package org.rut.util.algorithm.support; D}Sww5ZmP  
<. *bJ  
import org.rut.util.algorithm.SortUtil; l>KkAA  
h J0U-m  
/** $tej~xZK  
* @author treeroot KC)}M zt6_  
* @since 2006-2-2 r-.>3J  
* @version 1.0 YrV@k*O*  
*/  :>U+HQll  
public class ImprovedMergeSort implements SortUtil.Sort { E;[Uhh|78!  
dT[JVl+3=  
private static final int THRESHOLD = 10; 'b y+hXk  
4u+0 )<  
/* AQmHa2P  
* (non-Javadoc) _ ,/~P)  
* @w`wJ*I4,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _*MK"  
*/ {`,)<R>}  
public void sort(int[] data) { dqs~K7O^E  
int[] temp=new int[data.length]; eze%RjO}  
mergeSort(data,temp,0,data.length-1); 2=/-,kOL_  
} >Fs/Wet  
eTuKu(0 E  
private void mergeSort(int[] data, int[] temp, int l, int r) { xF@&wg  
int i, j, k; jFUpf.v2  
int mid = (l + r) / 2; >H ?k0M`L  
if (l == r) >##Z}auY  
return; 1GK>&;  
if ((mid - l) >= THRESHOLD) 3&nN;4~Zx6  
mergeSort(data, temp, l, mid); niKfat?  
else 0[e!/*_V  
insertSort(data, l, mid - l + 1); 6?;z\ AP&  
if ((r - mid) > THRESHOLD) 9g>)7Ne  
mergeSort(data, temp, mid + 1, r); s^K2,D]P  
else |0Xf":  
insertSort(data, mid + 1, r - mid); Ri~$hs!  
MX8|;t  
for (i = l; i <= mid; i++) { @`dlhz  
temp = data; *@ H\J e`  
} gKQV99  
for (j = 1; j <= r - mid; j++) { W"GW[~ h  
temp[r - j + 1] = data[j + mid]; eLnS1w 2  
} I7~) q`  
int a = temp[l]; ~f[ Y;  
int b = temp[r]; k5Fj "U  
for (i = l, j = r, k = l; k <= r; k++) { igW* {)h3  
if (a < b) { -%@ah:iJ  
data[k] = temp[i++]; 5doi4b>]!  
a = temp; {ywwJ  
} else { uYWD.]X;[  
data[k] = temp[j--]; (zsv!U  
b = temp[j]; F"UI=7:o  
} 6dV )pJd  
} R TpNxr{[  
} P^Owgr=Y  
;81,1 Ie<~  
/** &lLfVa-l  
* @param data U||GeEd  
* @param l `;J`O02  
* @param i YWvD+  
*/  ,w3-*z  
private void insertSort(int[] data, int start, int len) { qz{9ND| )  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gXJBb+P   
} QA*<$v  
} e6Y>Bk   
} t>/x-{bH\  
} owQ,op #  
/Pkz3(1  
堆排序: . ump? M  
?5J#  
package org.rut.util.algorithm.support; 5l 3PAG  
]B?M3`'>  
import org.rut.util.algorithm.SortUtil; Hd\V?#H  
V`1{*PrI@L  
/** )iQ^HZ  
* @author treeroot Dws) 4hH  
* @since 2006-2-2 O ~6%Iz`  
* @version 1.0 .Zv~a&GE  
*/ nqm=snh  
public class HeapSort implements SortUtil.Sort{ Z$JJ0X  
UZ2_FP  
/* (non-Javadoc) YLGE{bS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kuD$]A Q`&  
*/ ,1#? 0q  
public void sort(int[] data) { V< W;[#"  
MaxHeap h=new MaxHeap(); xdgAu  
h.init(data); <Q\KS  
for(int i=0;i h.remove();  ;Pt8\X  
System.arraycopy(h.queue,1,data,0,data.length); &h I!mo  
} IBo  
<D~hhGb  
private static class MaxHeap{ T \uIXL?3  
7I XWv-  
void init(int[] data){ j2<+[h-  
this.queue=new int[data.length+1]; ~TEn +  
for(int i=0;i queue[++size]=data; .R)P |@z L  
fixUp(size); uC^)#Y\"  
} \&hq$  
} z3K$gEve  
3NLn}  
private int size=0; g"1V ]  
jts0ZFHc-  
private int[] queue; iX]OF.:   
:LY.C<8  
public int get() { "u!gfG?oH  
return queue[1]; t4_yp_  
} ?J2A1iuq3  
kt2_WW[  
public void remove() { 8%#8PLB2  
SortUtil.swap(queue,1,size--); X]p3?"7  
fixDown(1); OW4j!W  
} qqf`z,u  
file://fixdown Zek@xr;]  
private void fixDown(int k) { U 5J _Y  
int j; LJ/He[r|[  
while ((j = k << 1) <= size) { S3ooG14Ls  
if (j < size %26amp;%26amp; queue[j] j++; eV|N@  
if (queue[k]>queue[j]) file://不用交换 "dX~J3$  
break; 4@@Sh`E:  
SortUtil.swap(queue,j,k); Vb`Vp(>AU  
k = j; E(4c&  
} P\7*ql`  
} QIGUi,R  
private void fixUp(int k) { ey DV911  
while (k > 1) { C6;2Dd]"N  
int j = k >> 1; [g/D<g5O  
if (queue[j]>queue[k]) >,{s Fc  
break; Q^Cm3|ZO  
SortUtil.swap(queue,j,k); BqNeY<zB*  
k = j; f47]gtB-  
} EVX3uC}{  
} ju{Y6XJ)  
B-rE8 \  
} ~~OFymQ%?q  
**hQb$  
} uGMzU&+  
'6dVe 2V  
SortUtil: Snf_{A<  
gM3:J:N  
package org.rut.util.algorithm; e.n(NW  
"=Br&FN{|  
import org.rut.util.algorithm.support.BubbleSort; 1P!)4W  
import org.rut.util.algorithm.support.HeapSort; [P`e @$  
import org.rut.util.algorithm.support.ImprovedMergeSort; mZR3Hl$  
import org.rut.util.algorithm.support.ImprovedQuickSort; #{q.s[g*+1  
import org.rut.util.algorithm.support.InsertSort; d2`g,~d  
import org.rut.util.algorithm.support.MergeSort; P"_/P8  
import org.rut.util.algorithm.support.QuickSort; XGx[Ny_A2  
import org.rut.util.algorithm.support.SelectionSort; *vD.\e~  
import org.rut.util.algorithm.support.ShellSort; \FVfV`x  
\"a{\E,{;  
/** aV'bI  
* @author treeroot q*3OWr  
* @since 2006-2-2 ?uq`|1`  
* @version 1.0 gm-[x5O"  
*/ WP L@v+  
public class SortUtil { xak)YOLRV  
public final static int INSERT = 1; }L_YpG7  
public final static int BUBBLE = 2; Lb/GL\J)  
public final static int SELECTION = 3; p@Y=6Bw  
public final static int SHELL = 4; t@qf/1  
public final static int QUICK = 5; 9=>fx  
public final static int IMPROVED_QUICK = 6; eO!9;dJ  
public final static int MERGE = 7; 1#A$&'&\J;  
public final static int IMPROVED_MERGE = 8; 53])@Mmus  
public final static int HEAP = 9; 7=CkZ&(?  
YZg#H) w%  
public static void sort(int[] data) { t WI-  
sort(data, IMPROVED_QUICK); AoS7B:T;!  
} ~5N}P>4 *  
private static String[] name={ P1-eDHYw  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bC<W7qf]}  
}; Y$=jAN  
 ? }M81  
private static Sort[] impl=new Sort[]{ ,;`f* #  
new InsertSort(), Tlw'05\{J  
new BubbleSort(), 7Z6=e6/\  
new SelectionSort(), ,|]J aZq  
new ShellSort(), nq M7Is  
new QuickSort(), p~$cwbQ!  
new ImprovedQuickSort(), O(T5  
new MergeSort(), $H)^o!  
new ImprovedMergeSort(), *&NP?-E  
new HeapSort() w 9dkJo  
}; N[e,){v  
yajdRU  
public static String toString(int algorithm){ ` =>}*GS  
return name[algorithm-1]; M13HD/~O  
} VzP az\e  
-'&/7e6>y  
public static void sort(int[] data, int algorithm) { [;u#79aE  
impl[algorithm-1].sort(data); M R#*/Iw~  
} za_b jE  
;+9OzF ;  
public static interface Sort { sK}AS;:  
public void sort(int[] data); 'C[tPP  
} 4ijtx)SA  
N''QQBUD  
public static void swap(int[] data, int i, int j) { yKc-:IBb{u  
int temp = data; uR0UfKK  
data = data[j]; b[74$W{  
data[j] = temp; T`&zQQ6F'  
} /WuYg OI  
} C~ 1]  
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