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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。 =#n|t[h-  
插入排序: cFD(Ap  
}3=]1jH6  
package org.rut.util.algorithm.support; z.P) :Er  
&*[T  
import org.rut.util.algorithm.SortUtil; ?5jkb  
/** ^Shz[=fd  
* @author treeroot !);'Bk9o  
* @since 2006-2-2 97'*Xq  
* @version 1.0 /nGsl<  
*/ ~.yt  
public class InsertSort implements SortUtil.Sort{ r Fdq \BSi  
9m%[ y1v0  
/* (non-Javadoc) Da)9s %_4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "4oY F:h  
*/ %R-"5?eTtu  
public void sort(int[] data) { zD7\Gv  
int temp; ;r"YZs&Xd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `=vL?w^QS  
} ^)D[ W(*  
} *:aJlvk  
} d7N}-nsB  
8;-a_VjA)  
} j#Bea ,  
,eF}`  
冒泡排序: uiPfAPZ  
o!gl :izb  
package org.rut.util.algorithm.support; %Z}A+Rv+*m  
al(t-3`<  
import org.rut.util.algorithm.SortUtil; Gt2NUGU  
|!aMj8i2  
/** q1.w8$  
* @author treeroot {^1D|y  
* @since 2006-2-2  (/-2bO  
* @version 1.0 ~?H _?}e  
*/ )apqL{u:=  
public class BubbleSort implements SortUtil.Sort{ :1PT`:Y  
^Z$%OM,  
/* (non-Javadoc) TG=) KS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^%VMp>s  
*/ z v*hA/  
public void sort(int[] data) { jn&[=Y-  
int temp; #tRLvOR:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,JYvfCA  
if(data[j] SortUtil.swap(data,j,j-1); "W?<BpV~@!  
} )[.FUx  
} vSb$gl5H  
} }S\\"SBC  
} b%IRIi&,  
Fo|6 PoSo  
} dq+VW}[EO  
Y6~/H  
选择排序: kAsYh4[  
hX# y7m  
package org.rut.util.algorithm.support; \DI%/(?  
&U^6N+l9  
import org.rut.util.algorithm.SortUtil; b)"bX}  
V^Z"FwWk  
/** TcPYDAa  
* @author treeroot 9+k7x,  
* @since 2006-2-2 (RW02%`jjy  
* @version 1.0 g <S&sYF5  
*/ j qfxQ  
public class SelectionSort implements SortUtil.Sort { `CP# S7W^  
KAVe~j"  
/* r%\(5H f  
* (non-Javadoc) xfZ.  
* `a2%U/U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E&ou(Q={  
*/ CT(VV6I\  
public void sort(int[] data) { |3j'HN5S  
int temp; Q}zAC2@L  
for (int i = 0; i < data.length; i++) { \ <b-I  
int lowIndex = i; AJ1(q:P  
for (int j = data.length - 1; j > i; j--) { <mN.6@*{  
if (data[j] < data[lowIndex]) { fn(< <FA)  
lowIndex = j; nQbF~   
} X!#rw= Q  
} ^oaFnzJdf  
SortUtil.swap(data,i,lowIndex); H <7r  
} `L n,qiA  
} r$7fw}'I  
GIG\bQSv2  
} ?XOl>IO  
*q**,_?;  
Shell排序: =*<Cw?Gc  
kYMKVR  
package org.rut.util.algorithm.support; I2"F2(>8K  
a ^wGc+  
import org.rut.util.algorithm.SortUtil; v w(X9xa  
wyG7SA   
/** -!w({rP  
* @author treeroot N<XS-XB,  
* @since 2006-2-2 sv}k_6XgY  
* @version 1.0 "`WcE/(  
*/ $6 46"1S  
public class ShellSort implements SortUtil.Sort{ y8~/EyY|^  
cPu<:<F[  
/* (non-Javadoc) ]nmVT~lBe"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l6kqP  
*/ +q*Cw>t /  
public void sort(int[] data) { _p <]jt  
for(int i=data.length/2;i>2;i/=2){ m[l[yUw#  
for(int j=0;j insertSort(data,j,i); |t<Uh,Bt  
} VR:4|_o  
} Eu;f~ V  
insertSort(data,0,1); kF,_o/Jc  
} Lt 8J^}kwl  
ON r}{T%@/  
/** =H8 LBM  
* @param data  :oN$w\A  
* @param j uu5L9.i9  
* @param i L_ &`  
*/ -(ev68'}W  
private void insertSort(int[] data, int start, int inc) { E![Ye@w  
int temp; O%hmGW4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); a%FM)/oI|T  
} g+:Go9k!F  
} n\/ JNzd3  
} L'A>IBrz  
VyF|d? b  
} BNj@~uC{  
&-e@Et`Pg  
快速排序: ?q lpi(  
\7\7i-Vo  
package org.rut.util.algorithm.support; kuX{2h*`  
|L}1@0i  
import org.rut.util.algorithm.SortUtil; JA <Hm.V#  
GE S_|[Q  
/** &N+i3l6`  
* @author treeroot ,JU3 w  
* @since 2006-2-2 Lo{g0~?x*  
* @version 1.0 ~R+,4  
*/ vAV{HBQ*  
public class QuickSort implements SortUtil.Sort{ LA9'HC(5  
/%F}vW(!  
/* (non-Javadoc) $yoIz.?V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *ydh.R<hb  
*/ 7A=*3  
public void sort(int[] data) { `|2p1Ei  
quickSort(data,0,data.length-1); {0Jpf[.f  
} =1SG^rp  
private void quickSort(int[] data,int i,int j){ C" 2K U*  
int pivotIndex=(i+j)/2; ?cvV~&$gc  
file://swap #`5>XfbmQ(  
SortUtil.swap(data,pivotIndex,j); <aR sogu"P  
c|2+J :}p  
int k=partition(data,i-1,j,data[j]); d"nms\=p  
SortUtil.swap(data,k,j); ;i>(r;ZM  
if((k-i)>1) quickSort(data,i,k-1); tso\bxiU  
if((j-k)>1) quickSort(data,k+1,j); tupAU$h?!  
Sdr,q9+__  
} VEG p!~D  
/** _7bQR7s  
* @param data o+% ($p  
* @param i p`=v$_]?(  
* @param j k )=Gyv<  
* @return h~r&7G@[}  
*/ {=Z _L?j  
private int partition(int[] data, int l, int r,int pivot) { Id<O/C  
do{ " Z2D@l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o @(.4+2m  
SortUtil.swap(data,l,r); szw|`S>o  
} 9 .3?$(  
while(l SortUtil.swap(data,l,r); @;b @O _  
return l; qo!6)Z  
} 3T)_(SM"  
"wj~KbT}&  
} :\cid]y3  
/1z3Q_M  
改进后的快速排序: o56UlN  
Zk<Y+!  
package org.rut.util.algorithm.support; v"8i2+j  
Qk?J4 B  
import org.rut.util.algorithm.SortUtil; GbfA-\  
l", X  
/** m_C#fR /I  
* @author treeroot rGgP9 (  
* @since 2006-2-2 X ApSKJ  
* @version 1.0 tBtmqxx  
*/ %Y-KjSs+l  
public class ImprovedQuickSort implements SortUtil.Sort { C)(/NGf  
rL23^}+^`  
private static int MAX_STACK_SIZE=4096; y*vg9`$k  
private static int THRESHOLD=10; ?!;i/h*{  
/* (non-Javadoc) ?O.'_YS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n,*E s/\  
*/ Z11I1)%s  
public void sort(int[] data) { >7(7  
int[] stack=new int[MAX_STACK_SIZE]; x#jJ 0T  
9ohO-t$XkY  
int top=-1; 0RGqpJxk  
int pivot; &.chqP(|  
int pivotIndex,l,r; wak`Jte=}m  
kPezR: 31  
stack[++top]=0; Gi Max  
stack[++top]=data.length-1; @tVl8]y  
8ps1Q2|  
while(top>0){ Ch7&9NW  
int j=stack[top--]; \(`,z}Ht _  
int i=stack[top--]; !HSX:qAP$  
4R28S]Gb  
pivotIndex=(i+j)/2; )Kg _E6  
pivot=data[pivotIndex]; }cd-BW  
NUM+tg>KM  
SortUtil.swap(data,pivotIndex,j); N51WY7  
yq,%<%+  
file://partition CooOBk  
l=i-1; )@E'yHYO>  
r=j; !WNO!S0/j  
do{ 2O " ~k  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OJ,Z  
SortUtil.swap(data,l,r); an,JV0  
} C`b)}dY  
while(l SortUtil.swap(data,l,r); -MuKeCgi  
SortUtil.swap(data,l,j); NY\-p=3c7=  
*#c^.4$'  
if((l-i)>THRESHOLD){ UjcKvF  
stack[++top]=i; (tz fyZ M  
stack[++top]=l-1; 0s%]%2O N  
} VCc57 Bo  
if((j-l)>THRESHOLD){ jOU1F1  
stack[++top]=l+1; z.0!FUd  
stack[++top]=j; >IEc4  
} @h)X3X  
dZ"d`M>o6  
} $X]Z-RCK3  
file://new InsertSort().sort(data);  H;Cv] -  
insertSort(data); QR*{}`+l  
} 8Lh[>|~=  
/** eZ;DNZK av  
* @param data &d i=alvv1  
*/ YA*E93J0  
private void insertSort(int[] data) { A S]jJc^  
int temp; ;7bY>zc(w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u\P)x~-TM  
} k{ibD5B  
} q\T}jF\t  
} $Y<(~E$FX  
~Pi CA  
} B6"pw0  
d{~Qd|<rr  
归并排序: <PTi>C8;r  
.p /VRlLU  
package org.rut.util.algorithm.support; {6 brVN.V  
*tL1t\jY  
import org.rut.util.algorithm.SortUtil; {p M3f  
hSfLNvK  
/** E K#ib  
* @author treeroot (h>+ivf|  
* @since 2006-2-2 ?%RR+(2m  
* @version 1.0 Jej-b<HmQ  
*/ `%Uz0hF  
public class MergeSort implements SortUtil.Sort{ u(P;) E"1  
<n|.Z-gF\  
/* (non-Javadoc) >W?7a:#,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qD/FxR-!  
*/ qr[+^*Ha  
public void sort(int[] data) { N6*v!M+  
int[] temp=new int[data.length]; e \ rb  
mergeSort(data,temp,0,data.length-1); f+D a W  
} z]F4Z'(e.  
3+| {O  
private void mergeSort(int[] data,int[] temp,int l,int r){ rCFTch"  
int mid=(l+r)/2; ]6 vqgu  
if(l==r) return ; B^sHFc""V  
mergeSort(data,temp,l,mid); HnmByn\j  
mergeSort(data,temp,mid+1,r); UON W3}-  
for(int i=l;i<=r;i++){ ."\&;:ZNv  
temp=data; hg=BXe4:  
} l#G }j^Q  
int i1=l; 4Iou| H  
int i2=mid+1; 2e @zd\  
for(int cur=l;cur<=r;cur++){ 7Vxe]s  
if(i1==mid+1) hr] :bR  
data[cur]=temp[i2++]; |xQq+e}l<  
else if(i2>r) 9QryW\6.@z  
data[cur]=temp[i1++]; B[rxV  
else if(temp[i1] data[cur]=temp[i1++]; 9AROvq|#  
else wc5OK0|  
data[cur]=temp[i2++]; >f*[U/{ K  
} 3e.v'ccK&  
} h7H#sL[^  
X@ Gm:6  
} ;qF#!Kb5  
,3{z_Rax-  
改进后的归并排序: %Pb 5PIk4  
\4.U.pKY  
package org.rut.util.algorithm.support; @BZ6{@*  
]8XY "2b  
import org.rut.util.algorithm.SortUtil; fuxBoB  
c=T^)~$$  
/** Bjz\L0d  
* @author treeroot KR6*)?c`  
* @since 2006-2-2 6_wf $(im  
* @version 1.0 .qioEqK8!y  
*/ i7[CqObzc  
public class ImprovedMergeSort implements SortUtil.Sort { $z+iB;x  
>_biiW~x:  
private static final int THRESHOLD = 10; .wD>0Ig  
Hize m!  
/* rZy38Wo  
* (non-Javadoc) gq6C6   
* *Bt`6u.>e,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  kQ$Q}3f  
*/ |*N.SS  
public void sort(int[] data) { |Mp_qg?g  
int[] temp=new int[data.length]; g]V}azLr  
mergeSort(data,temp,0,data.length-1); G^F4c{3c~  
} 2oAPJUPOJ  
cK>5!2b  
private void mergeSort(int[] data, int[] temp, int l, int r) { $.}fL;BzVz  
int i, j, k; *_$%Tv.]  
int mid = (l + r) / 2; )Xa`LG =|  
if (l == r) 6-#f1D 6  
return; DFs J}` $  
if ((mid - l) >= THRESHOLD) Etj*3/n|  
mergeSort(data, temp, l, mid); B7TA:K  
else 6:B[8otQ  
insertSort(data, l, mid - l + 1); vZC2F  
if ((r - mid) > THRESHOLD) vhEPk2wD,  
mergeSort(data, temp, mid + 1, r); i6r%;ueLb  
else A~-e?.  
insertSort(data, mid + 1, r - mid); xkOyj`IS  
/ MSz{ %v  
for (i = l; i <= mid; i++) { Y.@ vdW  
temp = data; |nXs'TO'O  
} :gb7Py'C  
for (j = 1; j <= r - mid; j++) { +J$[RxQ#  
temp[r - j + 1] = data[j + mid]; s_K:h  
} jh`&c{#*)M  
int a = temp[l]; FgRlxz  
int b = temp[r]; lcvWx%/o@  
for (i = l, j = r, k = l; k <= r; k++) { 5_M9T 3  
if (a < b) { Rs8`M8(4%  
data[k] = temp[i++]; vN 7a)s  
a = temp; B4GgR,P@S  
} else { 1d|+7  
data[k] = temp[j--]; iO3@2J  
b = temp[j]; >t?;*K\x"  
}  F[115/  
} }9>W41  
} 3Zdkf]Gh  
. 5|wy<  
/** ar=uDb;  
* @param data F^&_O*"  
* @param l [Pby  d  
* @param i Am!$\T%2  
*/ r.[!n)*  
private void insertSort(int[] data, int start, int len) { +l2{EiQw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (5;w^E9*n;  
} EG59L~nM  
} br>"96A1l  
} a*NcL(OC  
} L=VJl[DL  
m /JpYv~  
堆排序: C* b!E:  
GTNN4  
package org.rut.util.algorithm.support; /{d7%Et6  
-j`tBv)  
import org.rut.util.algorithm.SortUtil; Qy*`s  
7z)Hq./3@  
/** pqBd#  
* @author treeroot w=s:e M@  
* @since 2006-2-2 gsqlWfa  
* @version 1.0 bf-.SX~  
*/ {2}O\A  
public class HeapSort implements SortUtil.Sort{ ^hq`dr|R=  
J p!Q2}  
/* (non-Javadoc) C3u/8Mrt7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \&`S~cV9  
*/ 0[7\p\Q  
public void sort(int[] data) { HO/Ij  
MaxHeap h=new MaxHeap(); B4r4PSB>!  
h.init(data); {PnvQ?|Z  
for(int i=0;i h.remove(); t)=u}t$  
System.arraycopy(h.queue,1,data,0,data.length); =66dxU?}  
} y>3Zh5=  
`6)GjZh^  
private static class MaxHeap{ >_jT.d  
U ]`SM6  
void init(int[] data){ )/1AF^ E  
this.queue=new int[data.length+1]; D kl4 ^}  
for(int i=0;i queue[++size]=data; IC{\iwO/~c  
fixUp(size); NBwxN  
} 2%'{f  
} y>_lxLhmO#  
P hs4]!  
private int size=0; P%A;EF~ v  
p#wQW[6  
private int[] queue; D>|m8-@]  
eRKuy l  
public int get() { 26.),a  
return queue[1]; ~1]4 J(+  
} c>#T\AEkF  
!K-lO{Z^  
public void remove() { 1@rI4U@D  
SortUtil.swap(queue,1,size--); @E %:ALJ  
fixDown(1); D1rXTI$$  
} AE?MEag  
file://fixdown >?aPX C  
private void fixDown(int k) { |T\`wcP`q  
int j; OC34@YUj[  
while ((j = k << 1) <= size) { .<%2ON_  
if (j < size %26amp;%26amp; queue[j] j++; ]rGZ  
if (queue[k]>queue[j]) file://不用交换 E}LuWFZ&  
break; _;L%? -2c  
SortUtil.swap(queue,j,k); VPW@y  
k = j; }N[|2n R'  
} `Sgj!/! F  
} B( r~Nvc  
private void fixUp(int k) { O{b<UP'85  
while (k > 1) { 5x856RQ'  
int j = k >> 1; g@0<`g  
if (queue[j]>queue[k]) +yYxHIOZ(  
break; p}H:t24Cr5  
SortUtil.swap(queue,j,k); KZrg4TEVi  
k = j; j3>0oe!  
} `o/G0~T)  
} O&BNhuW2  
m}Xb#NAF8  
} 2E5n07,  
j11FEE<W  
} )S?.YCv?  
dpAj9CX(  
SortUtil: vge4&H3a&  
*rKj%Me  
package org.rut.util.algorithm; TwPp Z@  
 -c%#Hd  
import org.rut.util.algorithm.support.BubbleSort; CCoT  
import org.rut.util.algorithm.support.HeapSort; p+x}$&<|  
import org.rut.util.algorithm.support.ImprovedMergeSort; ~dc o  
import org.rut.util.algorithm.support.ImprovedQuickSort; f2h`bO  
import org.rut.util.algorithm.support.InsertSort; s Zn@ye^  
import org.rut.util.algorithm.support.MergeSort; /Ne;Kdp  
import org.rut.util.algorithm.support.QuickSort; .X1xpi%  
import org.rut.util.algorithm.support.SelectionSort; -Cn x!g}  
import org.rut.util.algorithm.support.ShellSort; Dh+<|6mx  
vciO={M  
/** s!73To}>  
* @author treeroot q,;8Ka )  
* @since 2006-2-2 ]?p 9)d=%<  
* @version 1.0 &VPfI  
*/ ]mzghH:E  
public class SortUtil { 9U]3B)h%m  
public final static int INSERT = 1; (V(8E%<c  
public final static int BUBBLE = 2; k'6x_ G  
public final static int SELECTION = 3; 2^aXXPC  
public final static int SHELL = 4; WRCf [5  
public final static int QUICK = 5; ^7Z#g0{^w  
public final static int IMPROVED_QUICK = 6; :<p3L!?8y  
public final static int MERGE = 7; )L+>^cJI<  
public final static int IMPROVED_MERGE = 8; tl6x@%\  
public final static int HEAP = 9; t~v_k\` {  
Q]1s*P  
public static void sort(int[] data) { 5M v<8P~  
sort(data, IMPROVED_QUICK); sgLw,WZ:  
} ]]F e:>  
private static String[] name={ ^\ku}X_ [?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %\f<N1~*  
}; @f!r"P]  
mXwDB)O{)  
private static Sort[] impl=new Sort[]{ 9Zj9e  
new InsertSort(), )+ (GE  
new BubbleSort(), 1j_ 6Sw(  
new SelectionSort(), $Wn!vbL  
new ShellSort(), 0/5{v6_rG  
new QuickSort(), Xmny(j)g  
new ImprovedQuickSort(), Ud:;kI%Vj  
new MergeSort(), dbG902dR  
new ImprovedMergeSort(), ~ugyUpY"  
new HeapSort() jdf3XTw  
}; &gdhq~4#  
e3.q8r  
public static String toString(int algorithm){ /B!Ik:c}  
return name[algorithm-1]; .+A2\F.^  
} -|2k$W  
F\2<q$Zn+  
public static void sort(int[] data, int algorithm) { h f{RI4Jc  
impl[algorithm-1].sort(data); o`M.v[O  
} !NO)|N>  
/k.?x]Ab  
public static interface Sort { '/F%  ff  
public void sort(int[] data); q uL+UFuM  
} |wM<n  
%7A?gY81  
public static void swap(int[] data, int i, int j) { Hrg -5_  
int temp = data; ==npFjB  
data = data[j]; 4 3G2{  
data[j] = temp; UM}MK  
} p5Wz.n.<'  
} |xFSGrC  
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