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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。 iCl,7$[*  
插入排序: !8l4H c8  
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package org.rut.util.algorithm.support;  U]e;=T:3  
A`X$jpAn&  
import org.rut.util.algorithm.SortUtil; h"wXmAf4%  
/** P_&2HA,I  
* @author treeroot ?"qU.}kGL  
* @since 2006-2-2 6wnfAli.  
* @version 1.0 /:U\U_j  
*/ sFCoRH|"c  
public class InsertSort implements SortUtil.Sort{ Rfa1 v*(  
Wv(VV[?/&  
/* (non-Javadoc) dLQ!hKD~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $[FO(w@f  
*/ hz\7Z+$L_  
public void sort(int[] data) { #@y4/JS&2  
int temp; ^P&y9dC.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p(U' c}@2  
} 5p=T*Y  
} z4{|?0=C  
} Eer rIV  
(MNbABZQ  
} RE *UIh*O  
9O@ eJ$  
冒泡排序: EVRg/ {X  
c(YNv4*X  
package org.rut.util.algorithm.support; \!G&:<h  
@Cw<wrem  
import org.rut.util.algorithm.SortUtil; ,pf<"^li  
&:'Uh W-t  
/** 8 b|&  
* @author treeroot LG&~#x  
* @since 2006-2-2 uv9cOd  
* @version 1.0 SB eb}LZ  
*/ X<Vko^vlj  
public class BubbleSort implements SortUtil.Sort{ Qy@chN{eP  
]_F%{8|  
/* (non-Javadoc) wCn W]<+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L F Z  
*/ +XFF@h&=t  
public void sort(int[] data) { uWi+F)GS^K  
int temp; :[\}Hn=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ W~dS8B=<  
if(data[j] SortUtil.swap(data,j,j-1); j6IWdqXe  
} 9Z rWG  
} ;t"#7\  
} bnUd !/;  
} =3/||b4c  
j<wg>O:s%r  
} ` [@ F3x  
ur*1I/v  
选择排序: d;;]+%  
R2t5T-8`c  
package org.rut.util.algorithm.support; #Du1(R  
7c4\'dt#  
import org.rut.util.algorithm.SortUtil; cq@8!Eu w]  
h7I_{v8  
/** IY,&/MCh  
* @author treeroot *>S\i7RET  
* @since 2006-2-2 \gj@O5rGP  
* @version 1.0 }2V|B4  
*/ s?E7tmaM  
public class SelectionSort implements SortUtil.Sort { V><5N;w  
-b r/  
/* e[w)U{|40  
* (non-Javadoc) ]#R;%L  
* 'iUfr@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V:My1R0  
*/ Tv~<W4  
public void sort(int[] data) { A[=)Zw "  
int temp; 9s5CqB  
for (int i = 0; i < data.length; i++) { 5XA6IL|/l  
int lowIndex = i; >JrQS"[u  
for (int j = data.length - 1; j > i; j--) { (ioi !p  
if (data[j] < data[lowIndex]) { ~i6tc d  
lowIndex = j; K^s!0[6  
} ']A+wGR&r  
} i<)c4  
SortUtil.swap(data,i,lowIndex); N`8?bU7a}"  
} ^Zydy  
} l"b78n  
IqcPml{\  
} .CrahV1G  
}_gCWz-5?  
Shell排序: a|T P2m  
hp Lo  
package org.rut.util.algorithm.support; 3V LwMF?  
:eei<cn2  
import org.rut.util.algorithm.SortUtil; e!G I<  
q;t T*B W  
/** \W}?4kz  
* @author treeroot QZt/Rm>W0  
* @since 2006-2-2 (lS&P"Xi  
* @version 1.0 b\dBt#mB!  
*/ Qighvei  
public class ShellSort implements SortUtil.Sort{ m0XK?;\V  
3DMfR ofg  
/* (non-Javadoc) VX2bC(E'%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |giK]Z  
*/ C03ehjT<  
public void sort(int[] data) { @j5W4HU  
for(int i=data.length/2;i>2;i/=2){ VU}UK$JN  
for(int j=0;j insertSort(data,j,i); +Rxf~m(pV  
} m:II<tv  
} 5JIa?i>B  
insertSort(data,0,1); VO#]IXaP  
} K=+w,H# `C  
Gvl-q1PVC  
/** X2q$i  
* @param data /|`;|0/2  
* @param j c i_XcG  
* @param i }oj$w?Ex  
*/ s e2+X>@>  
private void insertSort(int[] data, int start, int inc) { qRTxg%  
int temp; )MmMs"Um  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $zyY"yWRZ  
} < yE(p  
} 0[);v/@Ho  
} WI](a8bm  
qW $IpuK  
} j?[fpN$  
V ,*YM   
快速排序: t 0nGZ%`  
L8/o9N1  
package org.rut.util.algorithm.support; YJ. 'Yc  
#B;`T[  
import org.rut.util.algorithm.SortUtil; -"<H$  
Yg<o 9x$  
/** @C~TD)K  
* @author treeroot N[){yaj  
* @since 2006-2-2 >c5Vz^uM{4  
* @version 1.0 LL#7oBJdM  
*/ qYGnebn@\  
public class QuickSort implements SortUtil.Sort{ zp,f}  
cQ1oy-paD  
/* (non-Javadoc) DIkD6n?V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :sk7`7v  
*/ P/,7CfyPd  
public void sort(int[] data) { ;BejFcb  
quickSort(data,0,data.length-1); ?U iwr{Q  
} `-qSvjX  
private void quickSort(int[] data,int i,int j){ 3)EslBA7i  
int pivotIndex=(i+j)/2; v^HDR 3I  
file://swap = 14'R4:  
SortUtil.swap(data,pivotIndex,j); ]J5[ZVz  
U$ _?T-x  
int k=partition(data,i-1,j,data[j]); {~[H"h537t  
SortUtil.swap(data,k,j); s|"V$/X(W  
if((k-i)>1) quickSort(data,i,k-1); "|.>pD#0&  
if((j-k)>1) quickSort(data,k+1,j); -r/#20Y  
el;^cMY  
} Ajs<a(,6  
/** -TjYQ  
* @param data yQM7QLbTk  
* @param i 8y/YX  
* @param j toX4kmC  
* @return l/DV ?27  
*/ LV4 x9?&  
private int partition(int[] data, int l, int r,int pivot) { E)NH6 ~  
do{ B`T|M$Ug  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W6E9  
SortUtil.swap(data,l,r); f/eT4y  
} 0{gvd"q  
while(l SortUtil.swap(data,l,r); v>~ottQ|  
return l; lk 1c 2  
} 05=O5<l  
tA3]6SIK@  
} 0$":W  
:BC 0f9  
改进后的快速排序: ;7K5Bo  
G0^23j  
package org.rut.util.algorithm.support; Y^2`)':  
{!o-y=  
import org.rut.util.algorithm.SortUtil; D 7 [n^WtL  
hG2btmBht  
/** |\XjA4j  
* @author treeroot Q`,D#V${D  
* @since 2006-2-2 &z 1A-O v  
* @version 1.0 5R{ {FD`h  
*/ >Y1?`  
public class ImprovedQuickSort implements SortUtil.Sort { 7h&$^  
8}{';k  
private static int MAX_STACK_SIZE=4096; @zT.&1;`  
private static int THRESHOLD=10; n-}:D<\7  
/* (non-Javadoc) yodJGGAzk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4+$<G/K  
*/ >XSe  
public void sort(int[] data) { `[jQn;  
int[] stack=new int[MAX_STACK_SIZE]; ( X)$8y  
LCyci1\@  
int top=-1; -l`@pklQ  
int pivot; 23_<u]V  
int pivotIndex,l,r; U#Wc!QN-t  
one^XYy1%  
stack[++top]=0; *O)_D bj  
stack[++top]=data.length-1; |n}W^}S5  
fh b&_T  
while(top>0){ 7B"J x^  
int j=stack[top--]; ^t*+hFEI  
int i=stack[top--]; 83412@&  
)XnG.T{0|  
pivotIndex=(i+j)/2; 6mep|![6  
pivot=data[pivotIndex]; bhOyx  
oeDsJ6;  
SortUtil.swap(data,pivotIndex,j); r{YyKSL1*K  
SR*%-JbA  
file://partition 7. G   
l=i-1; Ua5m2&U1  
r=j; /JEH%)  
do{ (|' w$  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e&OMW ,7  
SortUtil.swap(data,l,r); _-%ay  
} 0s$g[Fw<.  
while(l SortUtil.swap(data,l,r); V*=cNj  
SortUtil.swap(data,l,j); @E,{p"{  
8MX/GF;F  
if((l-i)>THRESHOLD){ #_2V@F+,  
stack[++top]=i; [9BlP  
stack[++top]=l-1; "2HRuqf  
} YUT"A{L  
if((j-l)>THRESHOLD){ ,h #!!j\j6  
stack[++top]=l+1; pEH[fA]  
stack[++top]=j; >u*woNw(XM  
} Ook3B  
9`4h"9dO  
} ,\+tvrR4X  
file://new InsertSort().sort(data); Gxi;h=J2)>  
insertSort(data); x3PeU_9  
} ii2oWU  
/** \CUxGyu  
* @param data fOE:~3Q  
*/ pcur6:8W!  
private void insertSort(int[] data) { c*RZbE9k  
int temp; K[~Wj8W0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $#]?\psf  
} Qc[[@=S%  
} Yo| H`m,  
} IH\k_Yf#u  
iBp 71x65  
} P^rSpS9  
E0xUEAO  
归并排序: $rFv(Qc^=  
;f= :~go  
package org.rut.util.algorithm.support; .7ahz8v  
u+I-!3J87  
import org.rut.util.algorithm.SortUtil; {@Diig  
gW/H#T,  
/** ,=$yvZs4[]  
* @author treeroot _\@i&3hkx  
* @since 2006-2-2 &U4]hawbOU  
* @version 1.0 <Cg;l<$`b  
*/ ]DmqhK`  
public class MergeSort implements SortUtil.Sort{ Qbl6~>T  
W.MJyem  
/* (non-Javadoc) g+ 2SB5 2D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R3?~+ y&  
*/ Vq9hAD|k  
public void sort(int[] data) { o&(%:|  
int[] temp=new int[data.length]; ni2H~{]z  
mergeSort(data,temp,0,data.length-1); Ic#+*W\ZW  
} /rv XCA)j  
t$l[ 4 R-  
private void mergeSort(int[] data,int[] temp,int l,int r){ Kw!`u^>  
int mid=(l+r)/2; *9PS2*n  
if(l==r) return ; hXz"}X n  
mergeSort(data,temp,l,mid); ~{^A&#P  
mergeSort(data,temp,mid+1,r); 3qpk Mu3  
for(int i=l;i<=r;i++){ _JR4 PKtx  
temp=data; hZ2PP ^  
} 7Mo O2  
int i1=l; 'kH#QO\(e"  
int i2=mid+1; {H])Fob  
for(int cur=l;cur<=r;cur++){ PDD` eK}Fj  
if(i1==mid+1) *k+QX   
data[cur]=temp[i2++]; A: 0] n  
else if(i2>r) AQQj]7Y  
data[cur]=temp[i1++]; JSGUl4N  
else if(temp[i1] data[cur]=temp[i1++]; De>pIN;B>  
else RK rBHqh@  
data[cur]=temp[i2++]; cLR8U1k'  
} Ae ue:u>  
} M\`6H8aLn  
6bHj<6>MX  
} .*Hv^_  
A]H+rxg  
改进后的归并排序: ^<y$+HcH  
'O{hr0q}  
package org.rut.util.algorithm.support; Jc:G7}j6  
PU -~7h+$  
import org.rut.util.algorithm.SortUtil; l_,8_u7G  
4?%0z) g  
/** 3>L1}zyM]  
* @author treeroot $<ZX};/D  
* @since 2006-2-2 ~gBqkZ# y?  
* @version 1.0 fcw \`.  
*/ A=XM(2{aN  
public class ImprovedMergeSort implements SortUtil.Sort { QQ!,W':  
kQ'G+Kw~F  
private static final int THRESHOLD = 10; YmF`7W  
vm4]KEyrX  
/* {<kl)}  
* (non-Javadoc) .-WCB  
* 8V}c(2m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |ZZ3Qr+%S  
*/ &Q&$J )0  
public void sort(int[] data) { )9<)mV*EB(  
int[] temp=new int[data.length]; "UA W  
mergeSort(data,temp,0,data.length-1); X0!48fL*  
} %H}+'.8  
IL>g-  
private void mergeSort(int[] data, int[] temp, int l, int r) { Wq,UxMz  
int i, j, k; *-P@|eg  
int mid = (l + r) / 2; NEGpf[$  
if (l == r) 4tu2%Og)?  
return; >Zr/U!W*?  
if ((mid - l) >= THRESHOLD) Pc4sReo'  
mergeSort(data, temp, l, mid); )L#I#%  
else 97Q!Rot  
insertSort(data, l, mid - l + 1); 4e%SF|(Y'h  
if ((r - mid) > THRESHOLD) %"KBX~3+Kj  
mergeSort(data, temp, mid + 1, r); =%]dk=n?TN  
else :$}67b)MO  
insertSort(data, mid + 1, r - mid); _FVIN;!  
*{-XN  
for (i = l; i <= mid; i++) { ~V./*CQ\c  
temp = data; .5I1wRN49  
} a\%g_Q){  
for (j = 1; j <= r - mid; j++) { 0e}L Z,9e  
temp[r - j + 1] = data[j + mid]; kXOlZ C  
} SQz>e  
int a = temp[l]; ]I}' [D  
int b = temp[r]; L3kms6ch  
for (i = l, j = r, k = l; k <= r; k++) { [e*8hbS  
if (a < b) { |UlScUI,  
data[k] = temp[i++]; E4{^[=}  
a = temp; W0nRUAo[  
} else { BRW   
data[k] = temp[j--]; QTLOP~^  
b = temp[j]; =j}00,WH  
} Ur@'X-  
} FD`V39##  
} IzL yn  
TnKe"TA|9  
/** Zd5fr c$  
* @param data |H |ewVUY  
* @param l sXfx[)T<  
* @param i k*n5+[U^tP  
*/ =XWi+')  
private void insertSort(int[] data, int start, int len) { =nY*,Xu<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @0)bY*njj  
} 2smLv1w@  
} : 0%V:B  
} ( E0be.  
} k@wxN!w;  
~5JXY5 *o  
堆排序: E8V,".!+E  
g!K(xh EO  
package org.rut.util.algorithm.support; Y]Xal   
)9PQ j  
import org.rut.util.algorithm.SortUtil; VvPTL8Z  
\.*aC)  
/** lJKU^?4S8  
* @author treeroot 7d9%L}+q  
* @since 2006-2-2 G,$jU9 f  
* @version 1.0 4K4?Q+?  
*/ .IG(Y!cB  
public class HeapSort implements SortUtil.Sort{ mk0rAN  
e <IT2tv>u  
/* (non-Javadoc) J[<:-$E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Mi y+<8$  
*/ 9 s>JdAw?  
public void sort(int[] data) { XLzHm&;  
MaxHeap h=new MaxHeap(); ~A6QX8a  
h.init(data); M~wJe@bc  
for(int i=0;i h.remove();  o,X ?  
System.arraycopy(h.queue,1,data,0,data.length); FfP Ce5)  
} 8-po|  
PR.?"$!D{  
private static class MaxHeap{ %+`$Lb?{  
8Y&(o-R0  
void init(int[] data){ %*Y:Rm'>  
this.queue=new int[data.length+1]; NB>fr#pb  
for(int i=0;i queue[++size]=data; )TP7gLv=b  
fixUp(size); +=:CW'B5  
} a|66[  
} 9?]4s-~  
n32BHOVE  
private int size=0; L.erP* w  
'GNT'y_  
private int[] queue; [S*bN!t  
d7l0;yR&+  
public int get() { jMZ{>l.v  
return queue[1]; 4Kx;F 9!%~  
} wLNO\JP'  
!v94FkS>  
public void remove() { b^FB[tZ\x  
SortUtil.swap(queue,1,size--); :~g=n&x  
fixDown(1); 0h$23.  
} mNs&*h}  
file://fixdown 7zy6`O P  
private void fixDown(int k) { bl:.D~@  
int j; jYuH zf  
while ((j = k << 1) <= size) {  &grT}  
if (j < size %26amp;%26amp; queue[j] j++; H{9di\xnEm  
if (queue[k]>queue[j]) file://不用交换 ^TnBtIU-B  
break; p"Fj6T2  
SortUtil.swap(queue,j,k); LL.YkYu  
k = j; q(_pk&/  
} 4WDh8U  
} nV GrW#'E  
private void fixUp(int k) { 3C2L _ K3  
while (k > 1) { RV7l=G9tq  
int j = k >> 1; 8g&uCv/Uk  
if (queue[j]>queue[k]) NCd_h<}|6F  
break; mVW:]|!s  
SortUtil.swap(queue,j,k); ] S]F&B M|  
k = j; 7pmhH%Dn$  
} %?R}sUo  
}  s y#CR4X  
@/XA*9]l  
} 91e&-acA  
3fM~R+p  
} AEhh 6v  
> STWt>s  
SortUtil: @)|62Dv /  
|%we@ E  
package org.rut.util.algorithm; r#3(;N{=  
;#cb%e3  
import org.rut.util.algorithm.support.BubbleSort; ZB<goEg  
import org.rut.util.algorithm.support.HeapSort; A2g +m  
import org.rut.util.algorithm.support.ImprovedMergeSort; g!cTG-bh>J  
import org.rut.util.algorithm.support.ImprovedQuickSort; TDk'  
import org.rut.util.algorithm.support.InsertSort; iIA&\'|;i  
import org.rut.util.algorithm.support.MergeSort; '$;S?6$eW  
import org.rut.util.algorithm.support.QuickSort; 5c! ~WckbJ  
import org.rut.util.algorithm.support.SelectionSort; 9SXFiZA(r  
import org.rut.util.algorithm.support.ShellSort; vG69z&  
pjWqI 6,  
/** LZ}C{M{=5A  
* @author treeroot tLJ"] D1w  
* @since 2006-2-2 V- Oy<  
* @version 1.0 Z$~Wr3/  
*/ +|KnO  
public class SortUtil { tJ i#bg%  
public final static int INSERT = 1; b_:]Y<{> f  
public final static int BUBBLE = 2; (%YFcE)SRS  
public final static int SELECTION = 3; M)#aX|%Mh  
public final static int SHELL = 4; -]\UFR  
public final static int QUICK = 5; v:nm#P%P  
public final static int IMPROVED_QUICK = 6; ;1A4p`)  
public final static int MERGE = 7; yk,o*g  
public final static int IMPROVED_MERGE = 8; ehV`@ss  
public final static int HEAP = 9; V31<~&O~%  
kR3g,P{L  
public static void sort(int[] data) { VkZrb2]v  
sort(data, IMPROVED_QUICK); >/Gz*.  
} 8lg $]  
private static String[] name={ bO8g#rO  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g VplBF7{  
}; m?V4r#t  
 bF0 y`  
private static Sort[] impl=new Sort[]{ %l( qyH)*  
new InsertSort(), [?Wt ZM^q  
new BubbleSort(), GBFYa6\4sT  
new SelectionSort(), mADq_` j  
new ShellSort(), odD^xg"L  
new QuickSort(), kG^DHEne  
new ImprovedQuickSort(), /Q 8E12  
new MergeSort(), ?YOH9%_cs  
new ImprovedMergeSort(), FO&U{(Q  
new HeapSort() K?8{ y  
}; rzsb(  
[kM)K'-  
public static String toString(int algorithm){ @7e h/|Y,  
return name[algorithm-1]; ? suNA  
} g[!t@K  
w$MFCJ:p&  
public static void sort(int[] data, int algorithm) { NTkGLD1e.  
impl[algorithm-1].sort(data); 4p\<b8(9>  
} *Fi`o_d9[`  
/'ccFm2  
public static interface Sort { O KVIl  
public void sort(int[] data); KuL2X@)}  
} ^2rNty,nH  
M_<O'Ii3  
public static void swap(int[] data, int i, int j) { !`LaX!bmp  
int temp = data; ouL/tt_~  
data = data[j]; L}T:Y).  
data[j] = temp; f 0A0uU8y  
} mEyJ o|  
} ]3u ErnI  
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