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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。 WvIK=fdZ$  
插入排序: e1:u1(".  
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package org.rut.util.algorithm.support; Cl%V^xTb  
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import org.rut.util.algorithm.SortUtil; `>dIF.  
/** qT 5Wa O)  
* @author treeroot #}nBS-+  
* @since 2006-2-2 ,ZLG7e  
* @version 1.0 /IrKpmbq  
*/ L;L2j&i%v)  
public class InsertSort implements SortUtil.Sort{ U$MWsDn   
?< -wHj)  
/* (non-Javadoc) Y=PzN3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oM/B.U2a  
*/ L; @a E[#z  
public void sort(int[] data) { _a?wf!4>P  
int temp; Q1]V|S;)X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]Fb8.q5(Y  
} 9)8*FahW  
} R:SIs\%o  
} Vj?*= UL  
hnH)Jy;>  
} Ky =(urAd  
 pb,{$A  
冒泡排序: 4Sd+"3M  
1Kp?bwh"u  
package org.rut.util.algorithm.support; 0V{>)w!Fo  
$%lHj+(  
import org.rut.util.algorithm.SortUtil; g{rt^B  
I8XGU)  
/** yz54:q?  
* @author treeroot c%o5 E%  
* @since 2006-2-2 I^6c 0`  
* @version 1.0 M'pY-/.  
*/ 7{?lEQ&UE  
public class BubbleSort implements SortUtil.Sort{ BBaHM sr  
54, Ju'r  
/* (non-Javadoc) BA`kxL/x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +H5 jRw  
*/ F#zQQ)(Pf  
public void sort(int[] data) { i4 y(H  
int temp; m-Mhf;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ PX+"" #  
if(data[j] SortUtil.swap(data,j,j-1); p\4h$."  
} Br_3qJNVP  
} 4nX'a*'D~}  
} WV9[DFU  
} [ni-UNTv  
@ y&h4^)z  
} q[T_*X3o  
Th I  
选择排序: $D0)j(v  
0B#rqTEKu  
package org.rut.util.algorithm.support; ?STI8AdO  
RXCygPT   
import org.rut.util.algorithm.SortUtil; <"j"h=tm}  
_dH[STT  
/** |\yDgs%EGy  
* @author treeroot [kU[}FT  
* @since 2006-2-2 gwkZk-f\p  
* @version 1.0 S1 R #]  
*/ g[uE@Gaj&  
public class SelectionSort implements SortUtil.Sort { x<)!$cg  
see'!CjVo2  
/* "N=&4<]I5  
* (non-Javadoc) :6HiP&<  
* z^SN#v$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Au\ =ypK  
*/ K~9 jin  
public void sort(int[] data) { am)J'i,  
int temp; r(`8A:#d  
for (int i = 0; i < data.length; i++) { jHUz`.8B  
int lowIndex = i; 3l41r[\  
for (int j = data.length - 1; j > i; j--) { c qU$gKT  
if (data[j] < data[lowIndex]) { *o2_EqXL*  
lowIndex = j; GtGyY0  
} 8k*k  
} ]c~rPi  
SortUtil.swap(data,i,lowIndex); n^I|}u\  
} ^O,6(@>  
} xq#]n^  
E(L^hZMc  
} $$)<(MP3  
.WPuQZ!  
Shell排序: v@<lEG#$"|  
Y }g6IK}  
package org.rut.util.algorithm.support; P89Dg/P  
:W1tIB  
import org.rut.util.algorithm.SortUtil; f{oxF?|89  
hyr5D9d  
/** _^,[wD  
* @author treeroot LXOF{FG  
* @since 2006-2-2 +eVpMD( l  
* @version 1.0 `cy"-CJS  
*/ J>&dWKM3  
public class ShellSort implements SortUtil.Sort{ d&3I>E$UP  
hKH Q!`&v  
/* (non-Javadoc) Qr xO erp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yp7,^l  
*/ .x9nWa  
public void sort(int[] data) { |7 W6I$Xl  
for(int i=data.length/2;i>2;i/=2){ r>D[5B  
for(int j=0;j insertSort(data,j,i); ]mDsUZf<  
} #|2g{7 g*  
} o2t@-dNi  
insertSort(data,0,1); 4$#ia F  
} 9Y*VzQE  
kA->xjk  
/** DNTRLIKa  
* @param data 34&$_0zn  
* @param j '@1Qx~*]e  
* @param i B3i=pcef  
*/ q'U-{~q%  
private void insertSort(int[] data, int start, int inc) { 'e8d["N  
int temp; @a{v>)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S@rsQ@PA  
} IcNIuv  
} l.LFlwt  
} -a#AE|`  
+[go7A$5  
} p>hCh5  
W(3~F2  
快速排序: OW5|oG  
  ]q\=  
package org.rut.util.algorithm.support; $DMu~wwfG  
P^W$qy|  
import org.rut.util.algorithm.SortUtil; RM=+ZmA  
g\mrRZ/?  
/** 0.,&B5)  
* @author treeroot f0s<Y  
* @since 2006-2-2 7G #e~,M5  
* @version 1.0 ?. 'oxW  
*/ ' c\TMb.  
public class QuickSort implements SortUtil.Sort{ x'PjP1  
{;rpgc  
/* (non-Javadoc) TuhL :  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?&bVe__  
*/ |"(3]f\  
public void sort(int[] data) { DT~y^h  
quickSort(data,0,data.length-1); _ O71r}4  
} yeh adm\  
private void quickSort(int[] data,int i,int j){ sA7K ;J})  
int pivotIndex=(i+j)/2; F1]PYx$X  
file://swap XzwQ,+IAr  
SortUtil.swap(data,pivotIndex,j); HK4`@jYQ  
?^A:~"~  
int k=partition(data,i-1,j,data[j]); aLo>Yi  
SortUtil.swap(data,k,j); YedipYG9;  
if((k-i)>1) quickSort(data,i,k-1); Wn</",Gf  
if((j-k)>1) quickSort(data,k+1,j); 1OGv+b)  
g KY ,G  
} wEn&zZjx  
/** 4BL,/(W] x  
* @param data wOl-iN=  
* @param i h 7P?n.K  
* @param j +as\>"Cj+2  
* @return f v7g93  
*/ n`2"(7Wj  
private int partition(int[] data, int l, int r,int pivot) { 5 /VB'N#7s  
do{ :jp$X|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "S} hcAL/  
SortUtil.swap(data,l,r); {Q3#]Vu  
} wAwH8xLU  
while(l SortUtil.swap(data,l,r); i3!$M/_]  
return l; u>Kvub  
} "k@/Z7=  
J A2}  
} @g5]w&o_  
ju 6_L<  
改进后的快速排序: m9i%U   
-m-WUox4"  
package org.rut.util.algorithm.support; t|XC4:/>T  
y#W8] <dS"  
import org.rut.util.algorithm.SortUtil; :fQ*'m,  
`6F8Kqltr  
/** 9W r(w  
* @author treeroot ~Q\uP(!D  
* @since 2006-2-2 K%@SS8!oy  
* @version 1.0 f3&//h8  
*/ .-*nD8b  
public class ImprovedQuickSort implements SortUtil.Sort { G#M]\)f%  
VL1z$<vVXt  
private static int MAX_STACK_SIZE=4096; LOo#  
private static int THRESHOLD=10; WYUU-  
/* (non-Javadoc) /JY i^rZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>zn$d*0  
*/ +Rd{ ?)2~  
public void sort(int[] data) { 25KZe s)  
int[] stack=new int[MAX_STACK_SIZE]; 30-w TcG  
_!Q\Xn  
int top=-1; -$p-o Z)  
int pivot; ZdzGJ[$  
int pivotIndex,l,r; 4v JIO{m  
mTbPz Z4  
stack[++top]=0; ?5M2DLh~  
stack[++top]=data.length-1; `-\JjMSQ1  
\Vq;j 1  
while(top>0){ $e\R5L u  
int j=stack[top--]; 0]W/88ut*u  
int i=stack[top--]; 4s2ex{$+MA  
$h f\ #'J  
pivotIndex=(i+j)/2; Nd)o1 {I  
pivot=data[pivotIndex];  'Z}$V*  
0Jif.<  
SortUtil.swap(data,pivotIndex,j); zW&W`(  
&^>r<~]  
file://partition X28WQdP,7  
l=i-1; :S2MS{>Mo  
r=j; L zy|<:K+$  
do{ +t6m>IBu  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); t, YAk ?}  
SortUtil.swap(data,l,r); )&-+:u0  
} (9%%^s]uPT  
while(l SortUtil.swap(data,l,r); j3F=P  
SortUtil.swap(data,l,j); *mt v[  
E':Z_ ^4  
if((l-i)>THRESHOLD){ zK;t041e  
stack[++top]=i; 351'l7F\  
stack[++top]=l-1; Re>e|$.T  
} 4\RuJx  
if((j-l)>THRESHOLD){ .;s4T?j@w  
stack[++top]=l+1; >iV(8EgBS  
stack[++top]=j; ;I' ["k%  
} m#p^'}]!;  
Ss}0.5Bq  
} b@Cvs4  
file://new InsertSort().sort(data); K.Ir+SB  
insertSort(data); bp_@e0  
} 85]UrwlA4  
/** vZsVxx99  
* @param data <Z[R08 k  
*/ 4[wP$  
private void insertSort(int[] data) { c9 c Nlp  
int temp; Pl>t\`1:|A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ij^!TY[0  
} -Ox HQ  
} 64@s|m*  
} r8$TT\?~  
:gC2zv  
} 5#PhaVc  
tp&iOP6O  
归并排序: ]y e &#  
J>Ha$1}u/  
package org.rut.util.algorithm.support; f|)t[,c  
r G6/h'!|  
import org.rut.util.algorithm.SortUtil; 03T.Owd  
FW,D\51pTP  
/** Y@eUvz  
* @author treeroot L&%iY7sC`  
* @since 2006-2-2 ){~.jP=-#  
* @version 1.0 !NtY4O/  
*/ Y'9deX+  
public class MergeSort implements SortUtil.Sort{ g11K?3*%Q  
g(^l>niF:  
/* (non-Javadoc) )2S\:&x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DQ$/0bq   
*/ :h@:F7N _  
public void sort(int[] data) { ,8 seoX^  
int[] temp=new int[data.length]; ai RNd~\  
mergeSort(data,temp,0,data.length-1); cCIEG e6  
} mLO6`]p{H  
tK*f8X+q  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^=j$~*(LmX  
int mid=(l+r)/2; lVHJ}(<'p  
if(l==r) return ; 3IIlAzne;  
mergeSort(data,temp,l,mid); z7o5 9&  
mergeSort(data,temp,mid+1,r); o-_ a0j  
for(int i=l;i<=r;i++){ D6pk !mS  
temp=data; Z)~ 2{)  
} Z"u/8  
int i1=l; $9/r*@bu8d  
int i2=mid+1; q6dq@   
for(int cur=l;cur<=r;cur++){ %qMk&1  
if(i1==mid+1) .67W\p  
data[cur]=temp[i2++]; "]<Ut{Xb  
else if(i2>r) FgxQ}VvlH  
data[cur]=temp[i1++]; ]Az >W*Y  
else if(temp[i1] data[cur]=temp[i1++]; QG.FW;/L,  
else HO>uS>+  
data[cur]=temp[i2++]; !*;)]j  
} "rtmDNpL  
} 5h&8!!$[  
;A_QI>>  
} z; +x`i.  
cl:YN]BK  
改进后的归并排序: &x3y.}1  
x8[8z^BV?e  
package org.rut.util.algorithm.support; lq~n*uwO}t  
gd*\,P  
import org.rut.util.algorithm.SortUtil; !TcjB;q'  
4-MA!&  
/** +?8nY.~,'  
* @author treeroot o,L!F`W  
* @since 2006-2-2 WW.=>]7;  
* @version 1.0 Y`wi=(  
*/ 4{V=X3,x  
public class ImprovedMergeSort implements SortUtil.Sort { #X+)  
6m9Z5:xG  
private static final int THRESHOLD = 10; VCIG+Gz  
DIY WFVh  
/* YG_3@`-<  
* (non-Javadoc) 4s~o   
* j<[<qU:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uAP|ASH9T  
*/ Lqt]  
public void sort(int[] data) { R!O'DM+  
int[] temp=new int[data.length]; M1:m"#=  
mergeSort(data,temp,0,data.length-1); a)]N#gx  
} XX =A1#H  
TUT>*  
private void mergeSort(int[] data, int[] temp, int l, int r) { lH[N*9G(  
int i, j, k; WE3l*7<@  
int mid = (l + r) / 2; &\A$Rj)  
if (l == r) 0R.@\?bhL  
return; +ad 2  
if ((mid - l) >= THRESHOLD) 2 IGAZ%%  
mergeSort(data, temp, l, mid); MkQSq MU=  
else Kxg09\5i  
insertSort(data, l, mid - l + 1); 1t6UI4U!$  
if ((r - mid) > THRESHOLD) B,676~I  
mergeSort(data, temp, mid + 1, r); MDRSI g  
else W!{uEH{%l  
insertSort(data, mid + 1, r - mid); &{>~ |^  
9T\:ID= h  
for (i = l; i <= mid; i++) { SpkD  
temp = data; 9%x[z%06  
} \ZA%"F){  
for (j = 1; j <= r - mid; j++) { `O#y%*E  
temp[r - j + 1] = data[j + mid]; | .PLfc;  
} qYE-z( i  
int a = temp[l]; (+_Amw!W  
int b = temp[r]; 2a{eJ89f  
for (i = l, j = r, k = l; k <= r; k++) { >q`G?9d2  
if (a < b) { %P?W^mI  
data[k] = temp[i++]; `H\^#Zu  
a = temp; A&z  
} else { t{$t3>p-t  
data[k] = temp[j--];  hHdC/mR  
b = temp[j]; TO QvZ?_  
} SQ@@79A  
} ]LD@I;(_  
} RAe:$Iv$!v  
PS>k67sI  
/** ex-`+cF  
* @param data b*$^8%  
* @param l }hGbF"clqg  
* @param i ~q<U E\H  
*/ TygR G+G-  
private void insertSort(int[] data, int start, int len) { >8ePx,+!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); KNV$9&Z  
} `A #r6+  
} D.RHvo~6  
} oYu5]ry  
} b.$Gc!g  
=!7yX ;|  
堆排序: {1FY HM^  
vHWw*gg(/E  
package org.rut.util.algorithm.support; x ha!.&DO  
.*8.{n5   
import org.rut.util.algorithm.SortUtil; na<g /&  
8G9V8hS1#B  
/** BH=vI<D  
* @author treeroot eI- ~ +.  
* @since 2006-2-2 N j?,'?'O}  
* @version 1.0 <#:"vnm$j  
*/ Y1+f(Q  
public class HeapSort implements SortUtil.Sort{ WO]dWO6Mm  
m~# O ~)  
/* (non-Javadoc) zp d4uto5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A\WgtM  
*/ %6 Bt%H  
public void sort(int[] data) { "}EydG"=  
MaxHeap h=new MaxHeap(); *8Gx_$t&  
h.init(data); d"$ \fL  
for(int i=0;i h.remove(); R:11w#m7w  
System.arraycopy(h.queue,1,data,0,data.length); HdVGkv/  
} 6zyozJA  
I9_tD@s"(  
private static class MaxHeap{ dw'%1g.113  
0?k/vV4  
void init(int[] data){ ]U]{5AA6  
this.queue=new int[data.length+1]; e%"L79Of6)  
for(int i=0;i queue[++size]=data; ceAK;v o  
fixUp(size); lv,<[Hw1  
} < jfi"SJu  
} X=-pNwO   
|Zz3X  
private int size=0; +.{_n(kU  
C%l~qf1n  
private int[] queue; 'R= r9_%  
!DD|dVA{  
public int get() { !<@Zf4m  
return queue[1]; 6 :J @  
} xj(&EGY:  
\#  
public void remove() { (1*?2u*j  
SortUtil.swap(queue,1,size--); v@[MX- ,8  
fixDown(1); Z{ &PKS  
} ^BW V6  
file://fixdown u[y>DPPx  
private void fixDown(int k) { ACc.&,!IZ  
int j; .BuY[,I+  
while ((j = k << 1) <= size) { u.R:/H<>~  
if (j < size %26amp;%26amp; queue[j] j++; OE W IP  
if (queue[k]>queue[j]) file://不用交换 (V}D PA  
break; s+9q :  
SortUtil.swap(queue,j,k); $}N'm  
k = j; XswEAz0=  
} %=%jy  
} KR#Bj?fz-H  
private void fixUp(int k) { [p|-G*=00  
while (k > 1) { Q l ql(*  
int j = k >> 1; $GPenQ~},  
if (queue[j]>queue[k]) -fn["R]  
break; ++BVn[1  
SortUtil.swap(queue,j,k); 4>gk XfTF  
k = j; XV]`?  
} %.[t(F  
} |{<g-)  
q#F;GD  
} %mg |kb6n  
=D<46T=(RB  
} 1vu=2|QN  
ZmUS}   
SortUtil: hI]KT a  
=k'3rm*ld  
package org.rut.util.algorithm; aV,>y"S  
{])F%Q_#cD  
import org.rut.util.algorithm.support.BubbleSort; >?'cZTNk]  
import org.rut.util.algorithm.support.HeapSort; ~"iCx+pr  
import org.rut.util.algorithm.support.ImprovedMergeSort; (F +if  
import org.rut.util.algorithm.support.ImprovedQuickSort; =&< s*-l[  
import org.rut.util.algorithm.support.InsertSort; &CG3_s<2  
import org.rut.util.algorithm.support.MergeSort; \ @3i=!  
import org.rut.util.algorithm.support.QuickSort; +kmPQdO;*/  
import org.rut.util.algorithm.support.SelectionSort; x/R|i%u-s  
import org.rut.util.algorithm.support.ShellSort; l0 r Zril  
{eMu"<  
/** ma?$@ ]`k  
* @author treeroot r. =_=V/t  
* @since 2006-2-2 lmgMR|v  
* @version 1.0 T[*=7jnJQ  
*/ X2/ `EN\  
public class SortUtil { UXnd~DA  
public final static int INSERT = 1; z{7&=$  
public final static int BUBBLE = 2; p (:\)HP)R  
public final static int SELECTION = 3; 8(\Az5%  
public final static int SHELL = 4; [89#8|+  
public final static int QUICK = 5; 25o + ?Y<  
public final static int IMPROVED_QUICK = 6; ^D ;X  
public final static int MERGE = 7; o'?Y0Wt  
public final static int IMPROVED_MERGE = 8; 7_?:R2]n  
public final static int HEAP = 9; HFB2ep7N  
 ZOi8)Y~  
public static void sort(int[] data) { |JtdCP{  
sort(data, IMPROVED_QUICK); H_3S#.  
} [j`It4^nC  
private static String[] name={ ZjF$zVk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" p9y "0A|  
}; {|O8)bW'  
YO|Kc {j2e  
private static Sort[] impl=new Sort[]{ % Lhpj[C  
new InsertSort(), r*OSEzGUz  
new BubbleSort(), r\.1=c#"bP  
new SelectionSort(), Ky[/7S5E  
new ShellSort(), A\ CtM`  
new QuickSort(), -:h5Ky"  
new ImprovedQuickSort(), LsS/Sk  
new MergeSort(), '(7]jug  
new ImprovedMergeSort(), ]3BTL7r  
new HeapSort() m1heU3BUWU  
}; Eg FV  
;@Alr?y  
public static String toString(int algorithm){ p3M)gH=N  
return name[algorithm-1]; QS4sSua  
} 7  g8SK  
F<M#T  
public static void sort(int[] data, int algorithm) { ;$wS<zp6  
impl[algorithm-1].sort(data); ) ^'Q@W  
} ! ;x  
T2AyQ~5~  
public static interface Sort { wm}6$n?Za  
public void sort(int[] data); P>+{}c}3I  
} /QZnN?k  
3?|Fn8dQR.  
public static void swap(int[] data, int i, int j) { T2P0(rEz  
int temp = data; ! k)}p_e  
data = data[j]; ;XMbjWc  
data[j] = temp; Zrr3='^s  
} mqrP0/sN  
} Q.*qU,4);  
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