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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。 gdAd7 T  
插入排序: uR=*q a  
U e-AF#  
package org.rut.util.algorithm.support; ui"`c%2n  
1C=42ZZ&2  
import org.rut.util.algorithm.SortUtil; ^^V+0 l  
/** zWN]#W`  
* @author treeroot 0LGHSDb  
* @since 2006-2-2 X+;#^A3  
* @version 1.0 ld%#.~Q  
*/ :\mdVS!o  
public class InsertSort implements SortUtil.Sort{ <}mA>c'k  
U_9|ED:  
/* (non-Javadoc) <%4pvn8d?&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sj+ )   
*/ H>\l E2  
public void sort(int[] data) { }If,O  
int temp; $/u.F;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )+)qFGVz  
} ~urk Uz  
} ;Srzka2  
} e*<pO@Uy  
nbw8YO(=  
} wd,6/5=lh  
2#R0Bd  
冒泡排序: K-(C5 "j_  
7wrRIeES  
package org.rut.util.algorithm.support; t|&hXh{  
rWL&-AZQl  
import org.rut.util.algorithm.SortUtil; u3X!O  
.^- I<4.  
/** .lgm"  
* @author treeroot \*fXPJ4  
* @since 2006-2-2 OK@yMGz1I  
* @version 1.0 5n::]Q%=D  
*/ <0/)v J- 9  
public class BubbleSort implements SortUtil.Sort{ j<?k$ 8H  
3E@ &  
/* (non-Javadoc) [8b{Yba z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2tNQtq 0W  
*/ HS.eK#:N  
public void sort(int[] data) { (6)|v S  
int temp; Rs'mk6+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ vN6)Szim  
if(data[j] SortUtil.swap(data,j,j-1); (^ J2(  
} 7*+tG7I @  
} JFRbW Q0  
} U d+6=Us{  
} U,< ?]h  
q)"yP\  
} M VE:JNm  
#E/|W T  
选择排序: +D h?MQt?  
=4/K#cQ  
package org.rut.util.algorithm.support; %u?A>$Jn  
P?=}}DI  
import org.rut.util.algorithm.SortUtil; |l~#qeZ%  
pSx}:u^am  
/** |UQGZ  
* @author treeroot Fp+fZU  
* @since 2006-2-2 On;7  
* @version 1.0 !'bZ|j%  
*/ m*AiP]Qu  
public class SelectionSort implements SortUtil.Sort { ` b)i;m  
bz\nCfU  
/* H9=8nLb.  
* (non-Javadoc) Q-e(>=Gv_  
* |pT[ZT|}G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ +>>TGC  
*/ nI`9|W  
public void sort(int[] data) { 5N#Sic M  
int temp; (]"`>, ray  
for (int i = 0; i < data.length; i++) { >)F)@KAuN4  
int lowIndex = i; [WR*u\FF  
for (int j = data.length - 1; j > i; j--) { V4<f4|IL  
if (data[j] < data[lowIndex]) { "6WE6zq   
lowIndex = j; &7w*=f8I  
} ,u5iiR  
} {>yy3(N  
SortUtil.swap(data,i,lowIndex); .UUT@ w?  
} .A7ON1lc^C  
} iT~ gt/K  
k~iA'E0-  
} zrA =?[  
P9gAt4i  
Shell排序: d`xDv$QZ  
*kNXju  
package org.rut.util.algorithm.support; y#J8Yv8  
?[8s`caK.  
import org.rut.util.algorithm.SortUtil; ?2S<D5M Sb  
Cyp%E5b7  
/** nsXyReWka  
* @author treeroot WQNFHRfO*n  
* @since 2006-2-2 {%v{iE>  
* @version 1.0 Mgux (5`;  
*/ z| m-nIM  
public class ShellSort implements SortUtil.Sort{ %hA0  
rW2   
/* (non-Javadoc) ]2mfby  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dJ7!je1N*  
*/ ^Zq3K  
public void sort(int[] data) { LHusy;<E[  
for(int i=data.length/2;i>2;i/=2){ U1pwk[  
for(int j=0;j insertSort(data,j,i); pE]s>T a  
} (+9^)No  
} o[k,{`M0  
insertSort(data,0,1); HA;G{[X  
} j>O!|V  
o=Kd9I#  
/** KD8,a+GL  
* @param data  rUBc5@|  
* @param j (p?B=  
* @param i >'{'v[qR[G  
*/ b59NMGn  
private void insertSort(int[] data, int start, int inc) { 4^K<RSYs  
int temp; l\&Tw[O  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); . L]!*  
} L@~0`z:>iP  
} #D Oui]  
} m$^v/pLkM  
,z|g b]\  
} ,Y27uey{wa  
joJQ?lG  
快速排序: Ft 2u&Rtx  
C <q@C!A  
package org.rut.util.algorithm.support; (x8D ]a  
$&FeR*$|g  
import org.rut.util.algorithm.SortUtil; MMyJAGh ^G  
8'VcaU7Nh  
/** Ehg(xK  
* @author treeroot i/q1>  
* @since 2006-2-2 R?J=5tO  
* @version 1.0 `>\>'V<&  
*/ Kfs|KIQ>=  
public class QuickSort implements SortUtil.Sort{ VuA)Ye  
f>ilk Q`  
/* (non-Javadoc) 0`kaT ?>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K7] +. f  
*/ *l8:%t\  
public void sort(int[] data) { t|cTl/i 4  
quickSort(data,0,data.length-1); u\}"l2 r  
} Xs$UpQo  
private void quickSort(int[] data,int i,int j){ 0)9'x)l:  
int pivotIndex=(i+j)/2;  pytF K)U  
file://swap aF:|MTC(~  
SortUtil.swap(data,pivotIndex,j); K`twbTU  
FSkz[D_}  
int k=partition(data,i-1,j,data[j]); McRfEF \  
SortUtil.swap(data,k,j); ~|=goHmm[  
if((k-i)>1) quickSort(data,i,k-1); @x/D8HK2  
if((j-k)>1) quickSort(data,k+1,j); wT^QO^.  
S,^)\=v  
} r( 8!SVX  
/** 1zJ)x?  
* @param data "' ]|o~B  
* @param i c>yqq'  
* @param j //- ;uEO  
* @return U<.,"`=l  
*/ M%1wT9  
private int partition(int[] data, int l, int r,int pivot) { (b;*8  
do{ 'mE!,KeS;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t(5PKD#~Dc  
SortUtil.swap(data,l,r); Zf8_ko;|:-  
} 6,Y<1b*|Vo  
while(l SortUtil.swap(data,l,r); VgcLG ]tE[  
return l; <P1x3  
} {|/y/xYgy'  
@hj5j;NHK  
} 0m&W: c  
{K>}eO:K  
改进后的快速排序: yDe#,|-p  
*BAR`+;U  
package org.rut.util.algorithm.support; b&E9xD/;r  
NKE,}^C  
import org.rut.util.algorithm.SortUtil; N9gbj%+  
y-^m  
/** PuGc{kt  
* @author treeroot s(s hgI 3g  
* @since 2006-2-2 ~)IiF.I b  
* @version 1.0 +:#UU;W  
*/ nx'Yevi0$  
public class ImprovedQuickSort implements SortUtil.Sort { 8;1,saA_9  
KBy*QA  
private static int MAX_STACK_SIZE=4096; SH/^qDT'  
private static int THRESHOLD=10; YuKg|<WO  
/* (non-Javadoc) =p 7eP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .%T.sQ  
*/ S_dM{.!Z(,  
public void sort(int[] data) { M5T4{^i  
int[] stack=new int[MAX_STACK_SIZE]; Mib<1ZM  
KkD&|&!Q7u  
int top=-1; VJ()sbl{k  
int pivot; &BS*C} },  
int pivotIndex,l,r; rM{V>s:N  
{<y.G1<.  
stack[++top]=0; GR>kxYM%q  
stack[++top]=data.length-1; Hw 1cc3!  
Rr6}$]1  
while(top>0){ BoHpfx1C  
int j=stack[top--]; E7>D:BQ\2  
int i=stack[top--]; A4hbh$  
O[<0\  
pivotIndex=(i+j)/2; /YT _~q=:  
pivot=data[pivotIndex]; ERz{, >G?  
X>4qL'b:z  
SortUtil.swap(data,pivotIndex,j); hmM2c15T5  
:~%{  
file://partition m9 D' yXZ  
l=i-1; ]c~W$h+F  
r=j; ,AEaW  
do{ k5/W'*P  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); UTR`jXCg  
SortUtil.swap(data,l,r); M sQ>eSk  
} 5VhJ*^R`y  
while(l SortUtil.swap(data,l,r); c%vtg.A  
SortUtil.swap(data,l,j); n,8bQP=&  
XAw0Nn   
if((l-i)>THRESHOLD){ xmNs<mz  
stack[++top]=i; e]q(fPK  
stack[++top]=l-1; 8m"jd+  
} '4]_~?&x  
if((j-l)>THRESHOLD){ =dDr:Y<@*  
stack[++top]=l+1; r0(*]K:.  
stack[++top]=j; ]o3K  
} EaUO>S  
#d;/Me  
} 4"~l^yK  
file://new InsertSort().sort(data); Z|6,*XEc   
insertSort(data); =Cg1I\  
} L wP  
/** ['jr+gIfQ  
* @param data -0f ,qNF  
*/ ZYo?b"6A  
private void insertSort(int[] data) { b  >x03%  
int temp; R8C#D B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ()o[(Hx+ph  
} z6x`O-\  
} gOLN7K-)  
} jU0E=;1  
Q7@oAeNd  
} fF]w[lLDv  
/ lDei}  
归并排序: @M&qH[tK-A  
C q)Cwc[H  
package org.rut.util.algorithm.support; ckdXla  
y ]D[JX[  
import org.rut.util.algorithm.SortUtil; U\GuCw  
S?<hs,  
/** pX?/=T@ Bw  
* @author treeroot k<}3_   
* @since 2006-2-2 r<c&;*  
* @version 1.0  KGJ *h  
*/ _:7:ixN[Ie  
public class MergeSort implements SortUtil.Sort{ kY^ k*-v  
"X,*VQl:  
/* (non-Javadoc) /_qW?LKG/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W*r1Sy  
*/ &(X67  
public void sort(int[] data) { L25%KGg' o  
int[] temp=new int[data.length]; /X;/}fk  
mergeSort(data,temp,0,data.length-1); Ld?'X=eQ  
} yZQcxg%  
PWk\#dJN&  
private void mergeSort(int[] data,int[] temp,int l,int r){ LDh,!5G-M  
int mid=(l+r)/2; }*?,&9/_)  
if(l==r) return ; Fxv5kho  
mergeSort(data,temp,l,mid); W[<ZI>mf  
mergeSort(data,temp,mid+1,r); 3 nnoXc'  
for(int i=l;i<=r;i++){ s`gfz}/  
temp=data; <rxtdI"3  
} SZ1yy["  
int i1=l; YF)k0bu&;  
int i2=mid+1; SFR<T  
for(int cur=l;cur<=r;cur++){ ;cfPS  
if(i1==mid+1) <S3s==Cg  
data[cur]=temp[i2++]; &a.A8v)  
else if(i2>r) Z -fiJ75  
data[cur]=temp[i1++]; (\UpJlW  
else if(temp[i1] data[cur]=temp[i1++]; Y49&EQ  
else N;gY5;0m  
data[cur]=temp[i2++]; $i@I|y/  
} Y.kgJ #2  
} M;9s  
*Gul|Lp$<I  
} ]-;MY@  
spT$}F2n  
改进后的归并排序: >R}G  
U^8S@#1Q  
package org.rut.util.algorithm.support; }#h`1 uV  
#Q'#/\5  
import org.rut.util.algorithm.SortUtil; `j8pgnY>5~  
Cy dV$!&mP  
/** + w/B3 b  
* @author treeroot b/?)_pg  
* @since 2006-2-2 2N{^V?:  
* @version 1.0 4W#DLip9  
*/ +{0v@6<(02  
public class ImprovedMergeSort implements SortUtil.Sort { >&ENrvaJ  
0f#xyS 3  
private static final int THRESHOLD = 10; cx]H8]ch7  
ow{J;vFy\  
/* c9x&:U  
* (non-Javadoc) 'xLXj>  
* RsYMw3)G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qk >9o  
*/ E0AbVa.  
public void sort(int[] data) { vXm'ARj  
int[] temp=new int[data.length]; ne: 'aq  
mergeSort(data,temp,0,data.length-1); vi28u xc  
} &0i$Y\g  
YSrjg|k*  
private void mergeSort(int[] data, int[] temp, int l, int r) { !jvl"+_FV  
int i, j, k; 3CH> !QOA  
int mid = (l + r) / 2; fN/;BT  
if (l == r) (&Rql7](8  
return; 7>=  
if ((mid - l) >= THRESHOLD) 0SQrz$y  
mergeSort(data, temp, l, mid); pHXs+Ysw+  
else P\WFm   
insertSort(data, l, mid - l + 1); <HtGp6q  
if ((r - mid) > THRESHOLD) yf7|/M  
mergeSort(data, temp, mid + 1, r); Mh{244|o[  
else _PcF/Gyk  
insertSort(data, mid + 1, r - mid); 33 ; '6/  
QQHQ3 \  
for (i = l; i <= mid; i++) { NcBz("  
temp = data; et"Pb_-U  
} bB>.dC  
for (j = 1; j <= r - mid; j++) { xS>vmnW  
temp[r - j + 1] = data[j + mid]; tW a'[2L  
} !nq`Py MR  
int a = temp[l]; #m17cDL  
int b = temp[r]; iL2__TO  
for (i = l, j = r, k = l; k <= r; k++) { 5KP\#Y  
if (a < b) { OADW;fj  
data[k] = temp[i++]; Ot)S\s>  
a = temp; ik #Wlz`4  
} else { `5e{ec c7  
data[k] = temp[j--]; 3-&~jm~"  
b = temp[j]; P aeq  
} s/.P/g%tA>  
} wqi0%Cu*  
} Z~<=I }@  
~> N63I6  
/** plp-[eKcD  
* @param data J.'%=q(Sb  
* @param l ANNVE},  
* @param i 9ln=f=  
*/ q#@r*hl  
private void insertSort(int[] data, int start, int len) { ,i1BoG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &=MVX>[  
} N:+)6a  
} \|6VGh \Z  
} QM* T?PR  
} ]-9w'K d  
|j81?4<)v  
堆排序: MB7*AA;  
U1HG{u,"y  
package org.rut.util.algorithm.support; TEh.?  
#4lIna%VX  
import org.rut.util.algorithm.SortUtil; !/!ga)Y  
o.kDOqd  
/** M9afg$;.xe  
* @author treeroot N#ZWW6  
* @since 2006-2-2 k}p8"'O  
* @version 1.0 $dXx@6fP  
*/ *c [^/  
public class HeapSort implements SortUtil.Sort{ Dk>6PBl  
".%d{z}vz  
/* (non-Javadoc) d#]hqy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :vX%0|  
*/ k|\M(Z*(P  
public void sort(int[] data) { fIl!{pv[  
MaxHeap h=new MaxHeap(); jw9v&/-  
h.init(data); _Z!@#y@j  
for(int i=0;i h.remove(); [61*/=gWe  
System.arraycopy(h.queue,1,data,0,data.length); K, I  
} k@un}}0r  
w#[cGaIB  
private static class MaxHeap{ 3fp&iz  
n=bdV(?4  
void init(int[] data){ 7KX27.~F  
this.queue=new int[data.length+1]; o{! :N>(  
for(int i=0;i queue[++size]=data; ! xG*W6IT  
fixUp(size); \Dy|}LE  
} A+gS'DZ9C  
} -F[@)$L  
`d$@1  
private int size=0; -YAtM-VL  
|oke)w=gn  
private int[] queue; QxdC[t$Lp  
B ~N3k  
public int get() { Qj;{Z*l%+  
return queue[1]; {x.0Yh7  
} nvT@ 'y+  
"I)zi]vk  
public void remove() { ,!b<SQ5M  
SortUtil.swap(queue,1,size--); |5tZ*$nGa  
fixDown(1); (or"5}\6-  
} R6O v  
file://fixdown z-606g  
private void fixDown(int k) { uBa<5YDF  
int j; *$W&jfW  
while ((j = k << 1) <= size) { UUlz3"`  
if (j < size %26amp;%26amp; queue[j] j++; @anjjC5a~  
if (queue[k]>queue[j]) file://不用交换 O"+0 b|  
break; GaG>0 x   
SortUtil.swap(queue,j,k); 8>,w8(Nt  
k = j; `H6~<9r  
} QJRnpN/  
} sHc-xnd  
private void fixUp(int k) { (X,i,qK/  
while (k > 1) { xBA"w:<  
int j = k >> 1; #aU!f"SS  
if (queue[j]>queue[k]) *>KBDFI  
break; 5C9b*]-#  
SortUtil.swap(queue,j,k); twq~.:<o  
k = j; jh)@3c  
} (+epRC  
} 7!pKlmQ  
ZQ_6I}i")  
} KDq="=q  
o~IAZU39  
} ~qrSHn}+PU  
]|.ked  
SortUtil: ^0}ma*gi~  
)ZpI%M?)  
package org.rut.util.algorithm; hj9TiH/+  
Td|u@l4B  
import org.rut.util.algorithm.support.BubbleSort; GQn:lu3j:  
import org.rut.util.algorithm.support.HeapSort; oNyYx6q:Q  
import org.rut.util.algorithm.support.ImprovedMergeSort; WC`h+SC`.  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?gl&q+mv  
import org.rut.util.algorithm.support.InsertSort; G/<zd)  
import org.rut.util.algorithm.support.MergeSort; :xPo*#[Z(A  
import org.rut.util.algorithm.support.QuickSort; "mW'tm1+  
import org.rut.util.algorithm.support.SelectionSort; oNAnJ+_  
import org.rut.util.algorithm.support.ShellSort; igfQ,LWe!  
|(z{)yWbC[  
/** b4e~Z  
* @author treeroot %-540V{q  
* @since 2006-2-2 *y?HaU  
* @version 1.0 q2vD)r  
*/ bTc >-e,  
public class SortUtil { |(3 y09  
public final static int INSERT = 1; :rVR{,pL  
public final static int BUBBLE = 2; 0%rDDB  
public final static int SELECTION = 3; Q+T#J9Y  
public final static int SHELL = 4; q`'f /CS  
public final static int QUICK = 5; OuTV74  
public final static int IMPROVED_QUICK = 6; M?eP1v:<+G  
public final static int MERGE = 7; FfJp::|ddr  
public final static int IMPROVED_MERGE = 8; Qh1pX}X  
public final static int HEAP = 9; FBNLszT{L  
9{jMO  
public static void sort(int[] data) { WMf / S"=  
sort(data, IMPROVED_QUICK); (@+pz/  
} t<p#u=jOa  
private static String[] name={ z3tx]Ade  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #cfiN b}GX  
}; ;\mX=S|a  
$v;WmYTJ  
private static Sort[] impl=new Sort[]{ #c^]p/  
new InsertSort(), x|rc[e%k  
new BubbleSort(), <eG|`  
new SelectionSort(), 1_] X  
new ShellSort(), \%a0Lp{ I  
new QuickSort(), 89FAh6uE  
new ImprovedQuickSort(), Xxg|01  
new MergeSort(), ?$f.[;mh  
new ImprovedMergeSort(), 4H-eFs%5  
new HeapSort() yxt"vm;  
}; L@S\ rImw  
4>jHS\jc  
public static String toString(int algorithm){ O2{["c e  
return name[algorithm-1]; SH?McBxS  
} #Q8_:dPY  
f1 x&Fk  
public static void sort(int[] data, int algorithm) { h+Co:pr  
impl[algorithm-1].sort(data); */;7Uv7  
} ,TQec:B  
IgX &aW  
public static interface Sort { 6!m#;8 4  
public void sort(int[] data); j 2ag b  
} xaMDec V  
f8:nKb>nq$  
public static void swap(int[] data, int i, int j) { ^5sA*%T4  
int temp = data; PXMd=,}  
data = data[j]; w.?4}'DK  
data[j] = temp;  cca g8LC  
} %;'~TtW5  
} j&d5tgLB  
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