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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!=%MgF'*p  
插入排序: rI34K~ P  
'{=dEEi  
package org.rut.util.algorithm.support; 5N "fD{v{  
XOgl> 1O  
import org.rut.util.algorithm.SortUtil; V^fSrW]  
/** pwo5Ij,~q  
* @author treeroot ?&#z3c$}  
* @since 2006-2-2 -;pZC}Nd3  
* @version 1.0 ,,1H#;j  
*/ v Yt-Nx  
public class InsertSort implements SortUtil.Sort{ \pI)tnu6'U  
[=M0%"  
/* (non-Javadoc) F[PIo7?K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [<SM*fQ>t  
*/ 6v~` jS%3  
public void sort(int[] data) { y,&.<Yc  
int temp; b<,Z^Z_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]"bkB+I  
} jO xH' 1I  
} n5CjwLgu\b  
} VK\ Bjru9  
"#bL/b'{  
} [P,YW|:n  
C@+"d3  
冒泡排序: 3GVE/GtU  
)9'eckt  
package org.rut.util.algorithm.support; *>Sb4:  
`k y>M-  
import org.rut.util.algorithm.SortUtil; '5xf?0@s.  
;%"YA  
/** c@u)m}V  
* @author treeroot `H+~LVH  
* @since 2006-2-2 _22;hnG<iy  
* @version 1.0 me]O  
*/ Z-(#}(HD  
public class BubbleSort implements SortUtil.Sort{ ,Q|[Yr  
]~S,K}T  
/* (non-Javadoc) ly`p)6#R=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C =fs[  
*/ 6<0-GD}M  
public void sort(int[] data) { +g36,!q  
int temp; 'Okitq+O  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ! K? o H  
if(data[j] SortUtil.swap(data,j,j-1); 9>~UqP9  
} hKq <e%oVH  
} W\09h Z6  
} j" wX7  
} s+Qm/ h2  
Mazjn?f  
} }`k >6B  
i8R.Wl$l  
选择排序: 8joJ e>9VJ  
+ $i-"^  
package org.rut.util.algorithm.support; ;)Rvk&J5  
|k5uVhN  
import org.rut.util.algorithm.SortUtil; d{_tOj$  
[@D+kL*>  
/** WK7=z3mu  
* @author treeroot U9:?d>7  
* @since 2006-2-2 V0hC[Ilr  
* @version 1.0 cgKK(-$ny  
*/ ca>6r`  
public class SelectionSort implements SortUtil.Sort { cU}j Whu  
l!Q |]-.@  
/* [s?H3yQ.  
* (non-Javadoc) $ijWwrh  
* C6Qnn@waYb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ZdV|23  
*/ TTjj.fq6  
public void sort(int[] data) { *O') {(  
int temp; Xh==F:  
for (int i = 0; i < data.length; i++) { u@d`$]/>F  
int lowIndex = i; c-nBB  
for (int j = data.length - 1; j > i; j--) { Hbogi1!al|  
if (data[j] < data[lowIndex]) { I!bzvPJ]xc  
lowIndex = j; AHsp:0Ma#  
} [\N,ow,n  
} b 62 o  
SortUtil.swap(data,i,lowIndex); 51.! S  
} rAqg<fR*  
} (1e;7sNG@  
W-mi1l^H{  
} 1g`$[wp|  
i9}n\r0=c  
Shell排序: b~\gV_Z  
>T3HkOT  
package org.rut.util.algorithm.support; zRyZrt,%&  
yC. ve;lG  
import org.rut.util.algorithm.SortUtil; 4xLU15C  
3\eb:-B:@  
/** iN%\wkx*N  
* @author treeroot #W<D~C[I _  
* @since 2006-2-2 ]>h2h?2te  
* @version 1.0 S9X~<!]  
*/ Qxj &IX  
public class ShellSort implements SortUtil.Sort{ u?[P@_i<  
n y6-_mA]  
/* (non-Javadoc) *au&ODa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FY"!%)TV  
*/  8.D$J  
public void sort(int[] data) { Ikiv+Fq(  
for(int i=data.length/2;i>2;i/=2){ 31mY]Jve"  
for(int j=0;j insertSort(data,j,i); e#`wshtN:  
} 4)Y=)#=  
} W2h^ShG  
insertSort(data,0,1); 0 6 1@N=p8  
} <~# ZtD$G  
`+]9+:tS  
/** !?B9 0(  
* @param data Qz&I~7aoyV  
* @param j l= 5kd.{  
* @param i xy`aR< L  
*/ C/dqCUX:  
private void insertSort(int[] data, int start, int inc) { bG nBV7b  
int temp; =g' 7 xA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Mj5=t:MI  
} *ie#9jA  
} m;o \.s  
} *=}$@O S  
.(Q3M0.D  
} ^!H8"CdC3  
pLMki=.Ld  
快速排序: '3=[xVnv  
Uxx=$&#  
package org.rut.util.algorithm.support; OIB~ W  
(_-<3)q4  
import org.rut.util.algorithm.SortUtil; 'LIJpk3J  
Q%~b(4E^7P  
/** reLYtv  
* @author treeroot m<00 5_Z0Q  
* @since 2006-2-2 [ >#?C*s  
* @version 1.0 04NI.Jv  
*/ &s_O6cqgh  
public class QuickSort implements SortUtil.Sort{ `9b/Q  
k{Yj!C> #  
/* (non-Javadoc) VR5$[-E3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Hqm 09w  
*/ &k(t_~m>  
public void sort(int[] data) { sJtz{'  
quickSort(data,0,data.length-1); VkFTIyt  
} Y1EN|!WZ  
private void quickSort(int[] data,int i,int j){ ~=(?Z2UDA_  
int pivotIndex=(i+j)/2; 7(na?Z$  
file://swap +jzpB*@  
SortUtil.swap(data,pivotIndex,j); \Oh9)X:I  
}K9Vr!  
int k=partition(data,i-1,j,data[j]); 9ZUG~d7_  
SortUtil.swap(data,k,j); JE,R[` &  
if((k-i)>1) quickSort(data,i,k-1); E,E:WuB  
if((j-k)>1) quickSort(data,k+1,j); x:=Kr@VP  
csT_!sI I  
} u$x H iD  
/** Ac<V!v71  
* @param data ]hTYh^'e  
* @param i X<ZIeZBn  
* @param j qJB9z0a<Ov  
* @return u*`acmS>N  
*/ *>rpcS<l  
private int partition(int[] data, int l, int r,int pivot) { 0iqa]Am  
do{ Lhu2;F\/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %).phn"ij[  
SortUtil.swap(data,l,r); "?lirOD  
} yi%A*q~MT  
while(l SortUtil.swap(data,l,r); #B:J7&@fn  
return l; GEfX,9LF&  
} bmna*!l^M  
V| z|H$-  
} !cT#G  
N5csq(  
改进后的快速排序: YFOK%7K  
-QCo]:cp  
package org.rut.util.algorithm.support; 1t=Y+|vA9  
 (:].?o  
import org.rut.util.algorithm.SortUtil; bG67TWY)  
s0v?*GRX  
/** V^nYG$si  
* @author treeroot ~;#J&V@D  
* @since 2006-2-2 %yJL-6U  
* @version 1.0 {4ON2{8;4  
*/ C,z7f"  
public class ImprovedQuickSort implements SortUtil.Sort { qO[6?q=c:  
}Y[Z`w  
private static int MAX_STACK_SIZE=4096; '(Uyju=  
private static int THRESHOLD=10; zMt"ST.  
/* (non-Javadoc) g"( vl-Uw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y'Sxehx  
*/ EnA) Rz  
public void sort(int[] data) { C*ZgjFvB  
int[] stack=new int[MAX_STACK_SIZE]; Xj"/6|X  
LslQZ]3MY  
int top=-1; RfDIwkpp  
int pivot; $4'I 3{$  
int pivotIndex,l,r; -N^}1^gA  
Q bfm*JP~  
stack[++top]=0; P1 =bbMk  
stack[++top]=data.length-1; 6tI7vLmG  
hE-`N,i }  
while(top>0){ m,aJ(8G  
int j=stack[top--]; iyU@|^B"Wa  
int i=stack[top--]; |uV1S^ !A  
Yi&;4vC  
pivotIndex=(i+j)/2; V\%;S  
pivot=data[pivotIndex]; IV;juFw}G  
:ZL;wtT  
SortUtil.swap(data,pivotIndex,j); \`jFy[(Pa'  
!tv3.:eT  
file://partition << LmO-92  
l=i-1; n_AW0i .  
r=j; Y1+4ppZ  
do{ s ,\w00-:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Hs~M!eK  
SortUtil.swap(data,l,r); _A kc7"  
} a-x8LfcbF  
while(l SortUtil.swap(data,l,r); l!Z>QE`.S  
SortUtil.swap(data,l,j); N+\#k*n?  
26>e0hBh&  
if((l-i)>THRESHOLD){ gl:vJD  
stack[++top]=i; T,Cq;|g5E  
stack[++top]=l-1; t #MU2b  
} c)#b*k,lw<  
if((j-l)>THRESHOLD){ 7'7bIaJk  
stack[++top]=l+1; 3 l->$R]  
stack[++top]=j; kI]i,v#F  
} 5&v'aiWK  
tz j]c  
} 8|{:N>7  
file://new InsertSort().sort(data); X}0NeG^'O  
insertSort(data); X|L.fB=  
} `hM`bcS  
/** ~^$ONmI5  
* @param data H.XD8qi3W  
*/ 6#7f^uIK  
private void insertSort(int[] data) {  /8Bh  
int temp; ,~X^8oY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V!3G\*$?  
} M3K+;-n^  
} R}llj$?  
} #l2wF>0  
f,d @*E  
} [ hm/B`t*e  
`(H]aTLt ,  
归并排序: VaJX,Q  
WTA0S}pT  
package org.rut.util.algorithm.support; u3Z*hs)Z%  
e%`gD*8  
import org.rut.util.algorithm.SortUtil; VvSD &r^qI  
:RzcK>Gub=  
/** 5ap}(bO  
* @author treeroot o B_c6]K  
* @since 2006-2-2 3%{XJV   
* @version 1.0 |Q`}a %  
*/ }C"EkT!F  
public class MergeSort implements SortUtil.Sort{ -5>K pgXo\  
PDREwBX  
/* (non-Javadoc) +Nv&Qu%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A;1<P5lo  
*/ gEIjG  
public void sort(int[] data) { Cq !VMl>hP  
int[] temp=new int[data.length]; 8II-'%S6q  
mergeSort(data,temp,0,data.length-1); -0YS$v%au>  
} -9}]J\  
,(N&%  
private void mergeSort(int[] data,int[] temp,int l,int r){ (03m%\  
int mid=(l+r)/2; "^;'.~@e8  
if(l==r) return ; bd_U%0)pi1  
mergeSort(data,temp,l,mid); :(} {uG  
mergeSort(data,temp,mid+1,r); }di)4=U9  
for(int i=l;i<=r;i++){ QKCc5  
temp=data; jeN_ sm81b  
} ?CAP8_  
int i1=l; Jh{(xGA  
int i2=mid+1; ^TVica  
for(int cur=l;cur<=r;cur++){ #E5Sc\,  
if(i1==mid+1) 8'Xpx+v  
data[cur]=temp[i2++]; & oZI. Qeo  
else if(i2>r) 9Wb9g/L  
data[cur]=temp[i1++]; , =IbZ  
else if(temp[i1] data[cur]=temp[i1++]; ']u w,b  
else *ls}r5k2Y  
data[cur]=temp[i2++]; SgAY/#  
} )6PZ.s/F6p  
} bnWIB+%_  
*oY59Yf  
} QJTGeJ Y  
NAZxM9  
改进后的归并排序: bICi'`  
wHWd~K_q  
package org.rut.util.algorithm.support; 6JmS9ho  
ORs<<H.d  
import org.rut.util.algorithm.SortUtil; LV0g *ng  
E$ q/4  
/** G<4H~1?P  
* @author treeroot r|fJ~0z  
* @since 2006-2-2 A{: a kK  
* @version 1.0 Z=z'j8z3  
*/ |08tQ  
public class ImprovedMergeSort implements SortUtil.Sort { ;s3"j~5m)  
<#7}'@  
private static final int THRESHOLD = 10; ~YlbS-  
AVOqW0Z+y  
/* 9TO  
* (non-Javadoc) 2Q|Vg*x\U  
* 3VCyq7 B^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g 4=}].  
*/ 0jrcXN~  
public void sort(int[] data) { #i7!  
int[] temp=new int[data.length]; J *.Nf)i  
mergeSort(data,temp,0,data.length-1); tU!"CX  
} Dgc[WsCEW  
i'L7t!f}o  
private void mergeSort(int[] data, int[] temp, int l, int r) {  M)Yu^  
int i, j, k; 5L42'gJ  
int mid = (l + r) / 2; W ;,Uh E  
if (l == r) |m"2B]"@  
return; 2xni! *T+  
if ((mid - l) >= THRESHOLD) IA&((\YC  
mergeSort(data, temp, l, mid); }{ pNasAU  
else A*n'"+_  
insertSort(data, l, mid - l + 1); TiCp2Rsz  
if ((r - mid) > THRESHOLD) gA2Il8K  
mergeSort(data, temp, mid + 1, r); . 7g^w+W  
else j Z3N+_J1  
insertSort(data, mid + 1, r - mid); -J:](p  
@H@&B`Kd  
for (i = l; i <= mid; i++) { ?fnJ`^|-r  
temp = data; k>K23(X  
} g/lv>*+gS  
for (j = 1; j <= r - mid; j++) { ~fAdOh  
temp[r - j + 1] = data[j + mid]; ^^}  
} Z2PLm0%:  
int a = temp[l]; d{9rEB?  
int b = temp[r]; PP[{ c  
for (i = l, j = r, k = l; k <= r; k++) { "h_n/}r=  
if (a < b) { s+yBxgQ/  
data[k] = temp[i++]; A0oC*/  
a = temp; 6}L[7~1  
} else { W7l/{a @  
data[k] = temp[j--]; *VIM!/YW  
b = temp[j]; .<u<!fL2  
} _66zXfM<  
} hs2f3;)  
}  >pv~$  
+{]/ b%P  
/** HzQ6KYAMq  
* @param data @-qxNw  
* @param l &hB~Z(zS!  
* @param i r7C  m  
*/ yHCQY4/  
private void insertSort(int[] data, int start, int len) { |I^\|5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h[C!cX  
} yf3%g\k  
} {Ylj]  
} 9H1R0iWW  
} \r324Bw>2  
q}ZZqYk  
堆排序: "o<:[c9/  
9V.)=*0hp  
package org.rut.util.algorithm.support; k#JFDw\  
I?4J69'  
import org.rut.util.algorithm.SortUtil; V F6OC4 K  
7T_g?!sdMh  
/** @s/;y VVq  
* @author treeroot x\3 ` W  
* @since 2006-2-2 O *H:CW  
* @version 1.0 MZ=U} &F  
*/ }UXj|SY  
public class HeapSort implements SortUtil.Sort{ z\_q`43U7  
qq[2h~6P]  
/* (non-Javadoc) }!Qo wG   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .3{S6#  
*/ d+fmVM?p  
public void sort(int[] data) { -R~;E[ {%  
MaxHeap h=new MaxHeap();  O7s0M?4  
h.init(data); #T#&qo#  
for(int i=0;i h.remove(); z.e%AcX  
System.arraycopy(h.queue,1,data,0,data.length); 1 YMaUyL 1  
} &^ =t%A%#  
0AJ6g@ t[  
private static class MaxHeap{ asQ pVP  
z ]o&^Q  
void init(int[] data){ TkWS-=lNH0  
this.queue=new int[data.length+1]; K&BlWXT  
for(int i=0;i queue[++size]=data; p|(910OEQ  
fixUp(size); E2X KhW  
} w][ ;  
} _? 1<  
!ye%A&  
private int size=0; VG&|fekF  
%dw-}1X  
private int[] queue; >^|\wy  
$d,30hK  
public int get() { 0m7J'gm{  
return queue[1];  t Z\  
} 9@QP?=\Y  
L.U [eH  
public void remove() { 2?Q IK3"v  
SortUtil.swap(queue,1,size--); # Sb1oLC  
fixDown(1); JP!$uK{u  
} 7<IrN\@U  
file://fixdown bxkp9o  
private void fixDown(int k) { FxM`$n~K  
int j; HY5g>wv@  
while ((j = k << 1) <= size) { "uTzmm$  
if (j < size %26amp;%26amp; queue[j] j++; .}SW`R Pk  
if (queue[k]>queue[j]) file://不用交换 fhMtnh:  
break; Yx(?KN7V?  
SortUtil.swap(queue,j,k); YOGw Q  
k = j; K+ufcct  
} Y<w2_+(  
} U lj2 Py}  
private void fixUp(int k) { i&mu=J[  
while (k > 1) { Z=8 25[p  
int j = k >> 1; VG2TiR1  
if (queue[j]>queue[k]) D?@330'P9C  
break; KNIYar*3  
SortUtil.swap(queue,j,k); vq(@B  
k = j; J24UUZ9&$  
} H&mw!=FV0  
} ReZ|q5*  
"E/F{6NH  
} wF?THkdFo  
TL]2{rf~  
} 5y}}?6n+  
.[= 0(NO  
SortUtil: -M%n<,XN0  
Pk~P  
package org.rut.util.algorithm; qZKU=HM  
t+m$lqm  
import org.rut.util.algorithm.support.BubbleSort;  $Jb+}mlT  
import org.rut.util.algorithm.support.HeapSort; W zy8  
import org.rut.util.algorithm.support.ImprovedMergeSort; NkNw9?:#4  
import org.rut.util.algorithm.support.ImprovedQuickSort; bi#o1jR  
import org.rut.util.algorithm.support.InsertSort; o2a`4K  
import org.rut.util.algorithm.support.MergeSort; Kk9 JZ[nT'  
import org.rut.util.algorithm.support.QuickSort; 1ReO.Dd`R  
import org.rut.util.algorithm.support.SelectionSort; 9WtTUk  
import org.rut.util.algorithm.support.ShellSort; OR1XQij  
+P}'2tE~'  
/** hkHMBsNi  
* @author treeroot `hM ]5;0  
* @since 2006-2-2 z)43+8;  
* @version 1.0 -a&wOn-W  
*/  <gf:QX!  
public class SortUtil { ?v8RY,Q30  
public final static int INSERT = 1; ~}8 3\LI}  
public final static int BUBBLE = 2; 9zi/z_G  
public final static int SELECTION = 3; H'?Bx>X  
public final static int SHELL = 4; -("79v>#  
public final static int QUICK = 5; Pa0tf:  
public final static int IMPROVED_QUICK = 6; jY87N Hg  
public final static int MERGE = 7; ;`X-.45  
public final static int IMPROVED_MERGE = 8; kl3#&>e  
public final static int HEAP = 9; 5T8X2fS:  
1tQZyHc42;  
public static void sort(int[] data) { #3kR}Amow  
sort(data, IMPROVED_QUICK); 2}~1poyi>  
} |=jgrm1yj  
private static String[] name={ p_B,7@Jl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" gOgG23 x  
}; Qi6vP&  
Zm&Zz^s  
private static Sort[] impl=new Sort[]{ sl |S9Ix  
new InsertSort(), o)"}DeV$&  
new BubbleSort(), 84)S0Y8w  
new SelectionSort(), j(/"}d3osm  
new ShellSort(), +;FF0_   
new QuickSort(), "Q2[A]4E  
new ImprovedQuickSort(), 6$fC R  
new MergeSort(), <mrLld#_:C  
new ImprovedMergeSort(), 9DKmXL  
new HeapSort() $ AG.<  
}; L_)?5IOJ$  
5!tmG- 'b  
public static String toString(int algorithm){ N4)& K[  
return name[algorithm-1]; YA{Kgc^  
} ={={ W  
vQu) uml  
public static void sort(int[] data, int algorithm) { tQo"$ JN}  
impl[algorithm-1].sort(data); .7~Kfm@2  
} U:_T9!fG  
9dqD(S#C;"  
public static interface Sort { 2=F_<Jh|+  
public void sort(int[] data); ~NU~jmT2  
} q_cqjly<  
PJO;[: .I  
public static void swap(int[] data, int i, int j) { 0S/&^  
int temp = data; OSfwA&  
data = data[j]; c7 wza/r>  
data[j] = temp; sDJ5'ul  
} ~g1@-)zYxK  
} /xrt,M@  
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