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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。 ; KA~Z5x;  
插入排序: j+!v}*I![  
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package org.rut.util.algorithm.support; ~[ F`"  
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import org.rut.util.algorithm.SortUtil; pw#-_  
/** @L`jk+Y0vF  
* @author treeroot K'xV;r7Nt  
* @since 2006-2-2 G B^Br6  
* @version 1.0 9$Y=orpWxr  
*/ fOHxtHM  
public class InsertSort implements SortUtil.Sort{ ~>G^=0LT  
pdMc}=K  
/* (non-Javadoc) @d_M@\r=j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KXrjqqXs  
*/ Z,=1buSz_  
public void sort(int[] data) { k!^{eOM  
int temp; K@2),(z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Fcx&hj1gQ  
} }qUX=s GG  
} ^pS~Z~[d/  
} jo7\`#(Q  
t:S+%u U  
} LP-o8c  
=AT."$r>  
冒泡排序: b$7 +;I;  
IgzQr >  
package org.rut.util.algorithm.support; 3R/bz0 V>  
7^285)UQA  
import org.rut.util.algorithm.SortUtil; NHt\ U9l'  
rjP/l6 ~'  
/** @CoIaUVP  
* @author treeroot lYIH/:T  
* @since 2006-2-2 `XKLU  
* @version 1.0 iCoX& "lb  
*/ "tZe>>I  
public class BubbleSort implements SortUtil.Sort{ e.%nRhSs3  
^Pf WG*  
/* (non-Javadoc) y7{?Ip4[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AX INThJ  
*/ "MsIjSu  
public void sort(int[] data) { l]vm=7:  
int temp; _aphkeqd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xk5 ]^yDp  
if(data[j] SortUtil.swap(data,j,j-1); _{>vTBU4F  
} wL1MENzp*z  
} ("@!>|H  
} Y2TtY;  
} Mt$ *a  
B?QIN]  
} x^ni1=kU  
b>W %t  
选择排序: s"|Pdc4  
Iv *<L a  
package org.rut.util.algorithm.support; \['Cj*ek  
/ FII07V  
import org.rut.util.algorithm.SortUtil; #_1`)VS  
)BE1Q*= n  
/** aXVFc5C\  
* @author treeroot (:_$5&i7  
* @since 2006-2-2 hp2t"t  
* @version 1.0 baasGa3}s  
*/ kstIgcI  
public class SelectionSort implements SortUtil.Sort { b>|6t~}M  
3Vwh|1?  
/* l} /F*  
* (non-Javadoc) F [M,]?   
* K9[UB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Q0@/bYq  
*/ Gt1U!dP  
public void sort(int[] data) { PCvWS.{  
int temp; ! if   
for (int i = 0; i < data.length; i++) { <%d>v-=B  
int lowIndex = i; b}f~il  
for (int j = data.length - 1; j > i; j--) { }C:r 9? T  
if (data[j] < data[lowIndex]) { \zY!qpX<  
lowIndex = j; O^.#d  
} > I?IPQB  
} 8}[).d160  
SortUtil.swap(data,i,lowIndex); XX@ZQcN  
} T%Lx%Qn  
} _#niyW+?~  
do%&m]#;  
} IPk4 ;,  
1x)J[fyId  
Shell排序: "[k3kAm  
#R"*c hLV  
package org.rut.util.algorithm.support; p?!/+  
x Ar\gu  
import org.rut.util.algorithm.SortUtil; 8m MQ[#0:}  
3mgD(,(^  
/** = &]L00u.  
* @author treeroot H)?z #x  
* @since 2006-2-2 h\o.&6sd  
* @version 1.0 j^'go&p  
*/ 8Wx=p#_  
public class ShellSort implements SortUtil.Sort{ %;_MGae  
%{|pj +  
/* (non-Javadoc) \<' ?8ri#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L#J1b!D&<6  
*/ CY1Z'  
public void sort(int[] data) { .3;;;K9a~]  
for(int i=data.length/2;i>2;i/=2){ uph(V  
for(int j=0;j insertSort(data,j,i); *T/']t  
} #4PN"o@  
} X, n:,'  
insertSort(data,0,1); 6'/ #+,d'  
} D^O@'zP=At  
y0#2m6u  
/** [6fQ7uFMM8  
* @param data gJXaPJA{  
* @param j +rd+0 `}C  
* @param i V&5wRz+`W  
*/ \~W'v3:W  
private void insertSort(int[] data, int start, int inc) { 8=l%5r^cq  
int temp; cr3^6HB  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,prf;|e?  
} XTy x r  
} u_enqC3  
} b;n[mk  
J zl6eo[;  
} T[gv0|+  
]DcFySyv  
快速排序: HtFDlvdy]  
$Yq9P0Ya  
package org.rut.util.algorithm.support; aOp\91  
wT@og|M  
import org.rut.util.algorithm.SortUtil; icgfB-1|i  
b9krOe *j  
/** S'" Df5  
* @author treeroot 6Oq 7#3]  
* @since 2006-2-2 UNYqft4  
* @version 1.0 #e"[^_C@!  
*/ Da|z"I x  
public class QuickSort implements SortUtil.Sort{ mt .sucT  
}7Uoh(d  
/* (non-Javadoc) lN@o2QX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^c|/*u  
*/ iTwm3V P  
public void sort(int[] data) { ;pAK_>  
quickSort(data,0,data.length-1); GOPfXtkC  
} ;p//QJB9  
private void quickSort(int[] data,int i,int j){ LoV<:|GTI  
int pivotIndex=(i+j)/2; jp,4h4C^)  
file://swap ]Um/FAW  
SortUtil.swap(data,pivotIndex,j); jd: 6:Fm  
 R&&4y 7  
int k=partition(data,i-1,j,data[j]); A^g(k5M*  
SortUtil.swap(data,k,j); Nb\4 /;#  
if((k-i)>1) quickSort(data,i,k-1); F5<H m_\:  
if((j-k)>1) quickSort(data,k+1,j); V0@=^Bls  
LVGe]lD  
} }#fbbtd  
/** ]M=&+c>H~  
* @param data aN?zmkPpov  
* @param i /: "1Z]@  
* @param j <)9y{J}s:  
* @return CJ}%W#  
*/ ]Ze1s02(  
private int partition(int[] data, int l, int r,int pivot) { )7F/O3Tq  
do{ 0kh6@y3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M%HU4pTW#o  
SortUtil.swap(data,l,r); I9Xuok!0>=  
} ye&;(30Oq  
while(l SortUtil.swap(data,l,r); nlP;nlW  
return l; ~ljXzD93Z  
} 0J9x9j`&j  
lA]8&+,ZM  
} ?,mmYW6TjB  
kP:!/g  
改进后的快速排序: HJ"GnZp<  
uRvP hkqm  
package org.rut.util.algorithm.support; +(Ae4{z"1+  
/v{I  
import org.rut.util.algorithm.SortUtil; )nkY_' BV  
SUiOJ[5,  
/** us-L]S+lm  
* @author treeroot B#A6v0Ta  
* @since 2006-2-2 -@'FW*b  
* @version 1.0 Lbgi7|&  
*/ Wr 4,YQM  
public class ImprovedQuickSort implements SortUtil.Sort { XFl 6M~ c  
}bxs]?OW>  
private static int MAX_STACK_SIZE=4096; c 9Mz]1@f  
private static int THRESHOLD=10; 7Q 3k 7  
/* (non-Javadoc) Txu/{ M,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BGSw~6  
*/ y29m/i:  
public void sort(int[] data) { P.cyO3l  
int[] stack=new int[MAX_STACK_SIZE]; -?\D\\+t  
HMXE$d=[  
int top=-1; BmT!aue  
int pivot; i!Ba]n   
int pivotIndex,l,r; Gc?a+T  
_BufO7 `.  
stack[++top]=0; YK_ 7ip.a[  
stack[++top]=data.length-1; )~>YH*g  
L(-4w+  
while(top>0){ dtDFoETz  
int j=stack[top--]; /ZX }Nc g  
int i=stack[top--]; 6ujW Nf  
m67V_s,7B  
pivotIndex=(i+j)/2; 10&8-p1/mc  
pivot=data[pivotIndex]; [^iN}Lz  
hrk r'3lv  
SortUtil.swap(data,pivotIndex,j); wYea\^co  
 mh%VrA q  
file://partition z{q`GwW  
l=i-1; U{mYTN*:j$  
r=j; $ nb[GV  
do{ UMi~14& ;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W?& %x(6M  
SortUtil.swap(data,l,r); WJi]t93  
} %d @z39-;  
while(l SortUtil.swap(data,l,r); (3e 2c  
SortUtil.swap(data,l,j); Wwo0%<2y  
+`4A$#$+y  
if((l-i)>THRESHOLD){  *CMx-_  
stack[++top]=i; )X7A  
stack[++top]=l-1; Z+SRXKQ  
} %T[]zJ(  
if((j-l)>THRESHOLD){ 4H/OBR  
stack[++top]=l+1; Om&Dw |xG8  
stack[++top]=j; c-w)|-ac.  
} +ZYn? #IQ  
ZCw]m#lS  
} *pd@.|^)m  
file://new InsertSort().sort(data); 4i bc  
insertSort(data); %O<BfIZ  
} al0L&z\  
/**  _F{C\}  
* @param data pAEx#ck  
*/ I fir ,8  
private void insertSort(int[] data) { iso4]>LF  
int temp; rQXzR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5;?yCWc  
} 9mgIUjz  
} 58K5ZZG  
} zDp2g)  
oU|c.mYe  
} \v{=gK  
9L9sqZUB  
归并排序: |{;G2G1[  
t) +310w  
package org.rut.util.algorithm.support; ijcm2FJcG  
N [@?gFtT  
import org.rut.util.algorithm.SortUtil; Vi}_{ Cy  
V :eD]zq5  
/** -di o5a  
* @author treeroot mmsPLv6  
* @since 2006-2-2 o  K@"f9  
* @version 1.0 VL^EHb7  
*/ d _ e WcI  
public class MergeSort implements SortUtil.Sort{ Y7nvHU|+o  
*"kM{*3:v  
/* (non-Javadoc) h![#;>(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >7r!~+B"9'  
*/ \9d$@V  
public void sort(int[] data) { Qd6FH2Pl  
int[] temp=new int[data.length]; +V+a4lU14  
mergeSort(data,temp,0,data.length-1); z2c6T.1M  
} zL it  
fnY.ao1-s[  
private void mergeSort(int[] data,int[] temp,int l,int r){ 2tLJU  Z1  
int mid=(l+r)/2; :4s1CC+@\  
if(l==r) return ;  IB<d  
mergeSort(data,temp,l,mid); R3! t$5HG  
mergeSort(data,temp,mid+1,r); U&xUfBDt  
for(int i=l;i<=r;i++){ nm+s{  
temp=data; 2%> FR4a  
} />Nt[o[r  
int i1=l; ,47qw0=C  
int i2=mid+1; q =Il|Nb>  
for(int cur=l;cur<=r;cur++){ 4=.so~9odX  
if(i1==mid+1) b2]Kx&!  
data[cur]=temp[i2++]; >MK98(F  
else if(i2>r) uocGbi:V';  
data[cur]=temp[i1++]; W`&hp6Jq  
else if(temp[i1] data[cur]=temp[i1++]; .KC ++\{HE  
else x:7IIvP  
data[cur]=temp[i2++]; <1 pEwI~  
} Ha ]YJ}  
} 0Qd:`HF[  
7 ?t6UPf  
} ?q&T$8zc4  
SB7c.H,  
改进后的归并排序: y?0nI<}}HK  
<1%$Vq  
package org.rut.util.algorithm.support; tu?MYp;  
MPk5^ua:  
import org.rut.util.algorithm.SortUtil; 8V(pugJ  
PVOv[%  
/** Vg23!E  
* @author treeroot njw|JnDv  
* @since 2006-2-2 Tf)*4O4@'  
* @version 1.0 fAmz4  
*/ y==CT Y@  
public class ImprovedMergeSort implements SortUtil.Sort { $SE^S   
1 .X@;  
private static final int THRESHOLD = 10; pNIf=lA  
i  LAscb  
/* TPY}C  
* (non-Javadoc) rbpSg7}Q  
* g1o8._f.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3,=6@U  
*/ $g7<Y*t[  
public void sort(int[] data) { \L\b$4$d  
int[] temp=new int[data.length]; m6djeOl  
mergeSort(data,temp,0,data.length-1); eY\y E"3  
} -(#iIgmP  
EZj9wd"u  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9K&:V(gmw  
int i, j, k; AK#1]i~  
int mid = (l + r) / 2; U?=Dg1  
if (l == r) 63A.@mL  
return; Gbw2E&a  
if ((mid - l) >= THRESHOLD) V_:&S2j  
mergeSort(data, temp, l, mid); 'ah[(F<*@e  
else ;'Nd~:-]  
insertSort(data, l, mid - l + 1); &w~d_</  
if ((r - mid) > THRESHOLD) ,=:D   
mergeSort(data, temp, mid + 1, r); ,1##p77.  
else !YJs]_Wr  
insertSort(data, mid + 1, r - mid); e!r-+.i(  
lPJ\-/>$z  
for (i = l; i <= mid; i++) { AFfAtu  
temp = data; PzR[KUK  
} o+9j?|M  
for (j = 1; j <= r - mid; j++) { 'Qo*y%{@5  
temp[r - j + 1] = data[j + mid]; -Vhw^T1iV  
} ^Q^_?~h*!  
int a = temp[l]; \B 7tX  
int b = temp[r]; jZ3fKyp#   
for (i = l, j = r, k = l; k <= r; k++) { 6Kb1~jY  
if (a < b) { tdaL/rRe  
data[k] = temp[i++]; $lu t[o74  
a = temp; $D UZ!zaH!  
} else { 4YX3+oS  
data[k] = temp[j--]; 7`hP?a=  
b = temp[j]; =6#Eh=7N  
} IyPnp&_  
} 2,P^n4~A?w  
} L z1ME(  
I,'k>@w{s  
/** Q?/o%`N  
* @param data UEVG0qF  
* @param l 63~ E#Dt4  
* @param i 9?3&?i2-  
*/ <V6VMYXY4  
private void insertSort(int[] data, int start, int len) { wsVV$I[2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @{pLk4E  
} :$9tF >  
} 2Q"K8=s  
} E\2%E@0#  
} PIpi1v*qz  
wuJ4kW$  
堆排序: ;{o|9x|  
q8Z<{#oXu  
package org.rut.util.algorithm.support; r{%qf;  
M+9gL3W  
import org.rut.util.algorithm.SortUtil; oF GhNk  
&q|K!5[k  
/** LAe6`foW/  
* @author treeroot = +?7''{>  
* @since 2006-2-2 5j-YM  
* @version 1.0 ^Zy% fv,  
*/ yN s,Ll~  
public class HeapSort implements SortUtil.Sort{ _M5|Y@XN-  
Yr=Y@~ XL  
/* (non-Javadoc) r s?R:+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sw^u3  
*/ Eue~Y+K*b  
public void sort(int[] data) { 2oRg 2R}  
MaxHeap h=new MaxHeap(); Y~E`9  
h.init(data); f_Av3  
for(int i=0;i h.remove(); ;H.^i|_/  
System.arraycopy(h.queue,1,data,0,data.length); JNUt$h  
} u21EP[[,  
P&e\)Z|  
private static class MaxHeap{ 8rS:5:Hi  
>:!X.TG$  
void init(int[] data){ pW sDzb6?%  
this.queue=new int[data.length+1]; #!KE\OI;@5  
for(int i=0;i queue[++size]=data; 1.9}_4!  
fixUp(size); O ,h;hQZ  
} <r`2)[7N  
} VsE9H]v   
wInh~p  
private int size=0; p\ZNy\N^  
s;vHPUB\n  
private int[] queue; vf%&4\ib  
,.1Psz^U  
public int get() { Y@ksQ_u  
return queue[1]; qd)/9*|Jl  
} krvp&+uX  
I\[_9  
public void remove() { Z%/=|[9i  
SortUtil.swap(queue,1,size--); }YNR"X9*)/  
fixDown(1); NI [ pp`  
} hPePB=  
file://fixdown 364`IC( a  
private void fixDown(int k) { 9g"2^^wD  
int j; T7u%^xm  
while ((j = k << 1) <= size) { )MchsuF<  
if (j < size %26amp;%26amp; queue[j] j++; }n2M G  
if (queue[k]>queue[j]) file://不用交换 `Kr,>sEAM  
break; ;^%4Q"  
SortUtil.swap(queue,j,k); QKN+>X  
k = j; &3Sz je  
} nd1+"-,q  
} cH?B[S;]  
private void fixUp(int k) { 5ZK@`jkE  
while (k > 1) { Ix=}+K/  
int j = k >> 1; Vq?p|wy  
if (queue[j]>queue[k]) ,+xB$e  
break; c>RFdc:U  
SortUtil.swap(queue,j,k); F!Q@ u  
k = j;  jQ  
} &Ao+X=qw  
} ?ztkE62t  
dCk3;XU  
} n}G|/v<  
FZ,#0ZYJGP  
} 6ne7]R Y  
X_|J@5b7  
SortUtil: +M$Q =6/  
k!HK 97qA  
package org.rut.util.algorithm; %<*g!y `  
0ANZAX5  
import org.rut.util.algorithm.support.BubbleSort; kZZh"#W: L  
import org.rut.util.algorithm.support.HeapSort; 72y0/FJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; z>Hgkp8D"  
import org.rut.util.algorithm.support.ImprovedQuickSort; $gy*D7  
import org.rut.util.algorithm.support.InsertSort; X4E%2-m@'  
import org.rut.util.algorithm.support.MergeSort; a8iQ4   
import org.rut.util.algorithm.support.QuickSort; =&2 Lb  
import org.rut.util.algorithm.support.SelectionSort; h=kh@},  
import org.rut.util.algorithm.support.ShellSort; `A^"% @j  
C:C}5<fk x  
/** DB:+E|vSD  
* @author treeroot /.MN  
* @since 2006-2-2 ;1.,Sn+zO  
* @version 1.0 _Khc3Jo  
*/ Z9 9>5\k  
public class SortUtil { D.Q=]jOs  
public final static int INSERT = 1; M#VE]J  
public final static int BUBBLE = 2; /ZPyN<@  
public final static int SELECTION = 3; `~Zs0  
public final static int SHELL = 4; bMMh|F  
public final static int QUICK = 5; EzV96+  
public final static int IMPROVED_QUICK = 6; DV-;4AxxRq  
public final static int MERGE = 7; 0#&5.Gr)  
public final static int IMPROVED_MERGE = 8; B$!)YD;  
public final static int HEAP = 9; V'T ,4  
7=WT69,&  
public static void sort(int[] data) { (>GK \=:<  
sort(data, IMPROVED_QUICK); `[)YEg s  
} %i-c0|,T4  
private static String[] name={ _m'Fr 7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r{ef.^&:  
}; ReI/]#Us  
Hp|_6hO 2  
private static Sort[] impl=new Sort[]{ 4 G-wd  
new InsertSort(), "a"]o  
new BubbleSort(), qI<mjB{3`  
new SelectionSort(), #=f?0UTA  
new ShellSort(), >wBJy4:  
new QuickSort(), V=V:SlS9|  
new ImprovedQuickSort(), M&U j^K1  
new MergeSort(), 3]UUG  
new ImprovedMergeSort(), RUT,Y4 b  
new HeapSort() FPI;Jx6W'  
}; ^[XYFQTL  
.wu xoq  
public static String toString(int algorithm){ w1#gOwA,$  
return name[algorithm-1]; ?zVL;gVWA  
} f[~L?B;_L  
;)e2 @'Agl  
public static void sort(int[] data, int algorithm) { D-(w_$#  
impl[algorithm-1].sort(data); 3G~@H>j  
} Z1Z1@2 T  
( %xwl  
public static interface Sort { >W`4aA  
public void sort(int[] data); oifv+oY  
} B'EKM)dA  
7`8Ik`lY  
public static void swap(int[] data, int i, int j) { ;Tc`}2  
int temp = data; xs:n\N  
data = data[j];  <**y !2  
data[j] = temp; ~UjGSO)z}  
} ``e$AS  
} *nsAgGKKM^  
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