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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。 ?cowey\m .  
插入排序: rJ KX4,M  
1,9RfYV  
package org.rut.util.algorithm.support; Y Q3%vH5#y  
HFvhrG  
import org.rut.util.algorithm.SortUtil; nEyP Nm )  
/** NNb17=q_v  
* @author treeroot HO}aLp  
* @since 2006-2-2 ,HYz-sK.  
* @version 1.0 C&K%Q3V  
*/ auaFP-$`f  
public class InsertSort implements SortUtil.Sort{ 'xvV;bi  
FL"IPX;S  
/* (non-Javadoc) 1m|1eAGS{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <`~] P$  
*/ H Viu7kue`  
public void sort(int[] data) { 1K4LEg a`  
int temp; x(}@se  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E+UOuf*(  
} k;l^wM  
} &3S;5{7_e  
} Y=/HsG\W]  
!\RR UH*  
} ^ 4c2}>f  
;@ %~eIlu  
冒泡排序: kVe}_[{m  
l4v)tV~  
package org.rut.util.algorithm.support; W>/O9?D  
yV=hi?f-[V  
import org.rut.util.algorithm.SortUtil; R-bICGSE  
^7~=+0cF]  
/** mJ !}!~:  
* @author treeroot W^P%k:anK  
* @since 2006-2-2 .@/5Ln  
* @version 1.0 kSoAnJ|  
*/ N y7VIh|  
public class BubbleSort implements SortUtil.Sort{ a}El!7RO0  
(;V]3CtU*  
/* (non-Javadoc) X7Cou6r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K;gm^  
*/ C} Ewi-  
public void sort(int[] data) {  @X  
int temp; at ]Lz_\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _f{'&YhUU  
if(data[j] SortUtil.swap(data,j,j-1); GDZe6*  
} ]J?5qR:xCy  
} 4,wdIdSm4  
} (gs"2  
} gP^'4>Jr  
Q^ bG1p//.  
} nRb#M  
YdhrFw0`~r  
选择排序: gXc&uR0S  
Hg*6I%D[So  
package org.rut.util.algorithm.support; n[ AJ'A{  
|P>> ^,iUn  
import org.rut.util.algorithm.SortUtil; /N{xFt/?  
>=r094<  
/** aG`G$3_wx  
* @author treeroot ) l0=j b  
* @since 2006-2-2 j;J4]]R;o  
* @version 1.0 2Q-kD?PO,  
*/ `+k&]z$m  
public class SelectionSort implements SortUtil.Sort { ZWh:&e(  
.'L@$]!G  
/* 6(<M.U_ft  
* (non-Javadoc) b?h"a<7  
* r6*0H/*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i,$*+2Z  
*/ d+ql@e]  
public void sort(int[] data) { /$/\$f$  
int temp; OB;AgE@  
for (int i = 0; i < data.length; i++) { D.)R8X  
int lowIndex = i; ,hYUxh45  
for (int j = data.length - 1; j > i; j--) { D9 ,~Fc  
if (data[j] < data[lowIndex]) { d=Q0 /sI&  
lowIndex = j; L`yS '  
} rR^VW^|f  
} 3#^xxEu  
SortUtil.swap(data,i,lowIndex); k0{Mq<V*%  
} .' 3;Z'%"g  
} oT_k"]~Q~2  
fL' 42  
} y3))I\QT  
+Y'(,J  
Shell排序: +c+#InsY  
C4#'`8E  
package org.rut.util.algorithm.support; "Do9gW  
CdC&y}u  
import org.rut.util.algorithm.SortUtil; uRxo,.}c  
,.x1+9X  
/**  ceyZ4M  
* @author treeroot Mpb|qGi!  
* @since 2006-2-2 mWfzL'*  
* @version 1.0 xud =(HLl  
*/ f.,S-1D]h  
public class ShellSort implements SortUtil.Sort{ Nq9@^ E-{M  
KZsSTB6J  
/* (non-Javadoc) {CYFM[V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yLipuMNV  
*/ $l7 <j_C  
public void sort(int[] data) { *=UEx0_!q  
for(int i=data.length/2;i>2;i/=2){ OiJ1&Fz(  
for(int j=0;j insertSort(data,j,i); s-3vp   
} ,K,n{3]  
} !1-:1Whz8  
insertSort(data,0,1); '<4/Md[  
} FJ}/g ?  
x_s9DkX  
/** [;83 IoU}  
* @param data P8:k"i/6J  
* @param j q: ?6  
* @param i cOxF.(L  
*/ gR?=z}`@p  
private void insertSort(int[] data, int start, int inc) { 305()  
int temp; jaFBz&P/#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f*aYS  
} b: +.Y$%F-  
} "  q0lh  
} j2k,)MHu!x  
QUH USDT  
} <t.yn\G-w  
m!tB;:6  
快速排序: Go= MG:`  
!J3g,p*  
package org.rut.util.algorithm.support; sJw#^l  
W(9-XlYKE  
import org.rut.util.algorithm.SortUtil; =M*31>"I0  
E}b" qOV  
/** 3.xsCcmP  
* @author treeroot qVx4 t"%L>  
* @since 2006-2-2 rMdOE&5G  
* @version 1.0 gcQ>:m i  
*/ wHEt;rc(  
public class QuickSort implements SortUtil.Sort{ ![0\m2~iv  
OLXG0@  
/* (non-Javadoc) ,1a6u3f,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 18zv]v %  
*/ dE%rQE7'  
public void sort(int[] data) { ?WKFDL'_0j  
quickSort(data,0,data.length-1); L^Fni~  
} =j#uH`jgW  
private void quickSort(int[] data,int i,int j){ j[F\f>  
int pivotIndex=(i+j)/2; eYOwdTrq  
file://swap +j%!RS$ko  
SortUtil.swap(data,pivotIndex,j); +A>>Ak|s  
jL<:N 8  
int k=partition(data,i-1,j,data[j]); "fU=W|lY  
SortUtil.swap(data,k,j); 4703\ HK  
if((k-i)>1) quickSort(data,i,k-1); v8 I&~_b  
if((j-k)>1) quickSort(data,k+1,j); z)#I"$!d  
XBh0=E?qiS  
} h'|{@X  
/** 2ed$5.D  
* @param data p$`71w)'[  
* @param i ^yb3L1y  
* @param j Rr{mD#+  
* @return 5N@k9x  
*/ F;kY5+a7~e  
private int partition(int[] data, int l, int r,int pivot) { NhU~'k  
do{ h.l^f>, /  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [U5[;BNRD  
SortUtil.swap(data,l,r); |k\4\a Lj  
} HQCxO?  
while(l SortUtil.swap(data,l,r); g=XvqD<  
return l; yT.h[yv"w  
} -Wd2FD^x  
&CpxD."8x  
} G%jgr"]\z  
Hbn%CdDk1  
改进后的快速排序: "jb`KBH%"  
M%92 ^;|`  
package org.rut.util.algorithm.support; #^|y0:  
aY@]mMz\  
import org.rut.util.algorithm.SortUtil; EZ:pcnL {  
? %XTD39  
/** %JF^@\E!|  
* @author treeroot p.A_,iE  
* @since 2006-2-2 UyTsUkY  
* @version 1.0 ,&e0~  
*/ w9< <|ZaU  
public class ImprovedQuickSort implements SortUtil.Sort { xQ+UZc  
X ^8@T  
private static int MAX_STACK_SIZE=4096; ^~9fQJNs  
private static int THRESHOLD=10; BKvX,[R2  
/* (non-Javadoc) Q,9"/@:c,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bA!n;  
*/ S81% iz.n  
public void sort(int[] data) { m!Cvd9X=  
int[] stack=new int[MAX_STACK_SIZE]; }Go?j# !  
d,8L-pT$FM  
int top=-1; ' ^E7T'v%  
int pivot; VHyH't_&s  
int pivotIndex,l,r; X'Q?Mh  
]Wr2 IM  
stack[++top]=0; <`rmQ`(}s  
stack[++top]=data.length-1; zisf8x7^W  
KSDz3qe  
while(top>0){ b+Sq[  
int j=stack[top--]; VwvL  
int i=stack[top--]; 1yC_/Va1  
gB|>[6  
pivotIndex=(i+j)/2; -FpZZ8=,M2  
pivot=data[pivotIndex]; -@L7! ,j  
=z^ 2KH  
SortUtil.swap(data,pivotIndex,j); IJa6W`}  
fGj YWw  
file://partition |>|f?^  
l=i-1; Oy EOb>  
r=j; P1C{G'cR  
do{ HVjN<HIqM  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \A7{kI  
SortUtil.swap(data,l,r); 2^ uP[  
} mv] .  
while(l SortUtil.swap(data,l,r); PL} Wu=  
SortUtil.swap(data,l,j); Voy1  
nVB.sab  
if((l-i)>THRESHOLD){ :j^IXZW  
stack[++top]=i; 2qd5iOhX+  
stack[++top]=l-1; [x{z}rYH  
} ,+2!&"zD  
if((j-l)>THRESHOLD){ PWciD '!  
stack[++top]=l+1; 6`Hd)T5{w  
stack[++top]=j; gxnIur)  
} }a O6%  
8u8-:c%{  
} k_;g-r,  
file://new InsertSort().sort(data); q)j b9e   
insertSort(data); 5"sd  
} +pUG6.j%  
/** W4Z8U0co  
* @param data mR,w~wP  
*/ {E=BFs  
private void insertSort(int[] data) { $, hHR:  
int temp; zUuOX5-6x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gGZ-B<  
} 5 EhOvt8  
} 3JYhF)G  
} :1asY:)vNP  
VAW:h5j2@  
} r&%TKm^/  
f$>KTb({B  
归并排序: M.FY4~  
90wGS_P04  
package org.rut.util.algorithm.support; :j2?v(jT_l  
6v"WI@b4  
import org.rut.util.algorithm.SortUtil; '/="bSF  
[~NJf3c"  
/** j(~e{HZ  
* @author treeroot 3d>8~ANi=%  
* @since 2006-2-2 !$u:_8  
* @version 1.0 )J^5?A  
*/ @7HHi~1JK  
public class MergeSort implements SortUtil.Sort{ F8H4R7 8>;  
=kzuU1s  
/* (non-Javadoc) G&Fe2&5!w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rU4;yy*b  
*/ &?[g8A  
public void sort(int[] data) { joz0D!-"#  
int[] temp=new int[data.length]; Y`NwE  
mergeSort(data,temp,0,data.length-1); %$D n);6=  
} 6Y`rQ/F  
gV}c4>v(  
private void mergeSort(int[] data,int[] temp,int l,int r){ !78P+i  
int mid=(l+r)/2; o75l&`  
if(l==r) return ; _V`F_C\\#  
mergeSort(data,temp,l,mid); HPMj+xH  
mergeSort(data,temp,mid+1,r); Ec9%RAxl  
for(int i=l;i<=r;i++){ t:x"]K  
temp=data; C/?x`2'  
} FuC#w 9_  
int i1=l; mzf~qV^T  
int i2=mid+1; mzRH:HgN?  
for(int cur=l;cur<=r;cur++){ 63E)RR_Lh  
if(i1==mid+1) BOfl hoUX  
data[cur]=temp[i2++]; y(ceEV  
else if(i2>r) bMq)[8,N  
data[cur]=temp[i1++]; E- jJ!>&K  
else if(temp[i1] data[cur]=temp[i1++]; Sx:JuK@  
else 0fGt7 "Q  
data[cur]=temp[i2++]; xX?9e3(  
} d>gQgQ;g  
} r>#4Sr  
frokl5L@  
} 2BKiA[ ;;  
kyi"U A82  
改进后的归并排序: +iqzj-e&e[  
1B#iJZ}  
package org.rut.util.algorithm.support; `@xnpA]l  
z6*r<>Bf+b  
import org.rut.util.algorithm.SortUtil; 7@R^B=pb  
LC7%Bfn!  
/** o2D;EUsNX  
* @author treeroot 0.\}D:x(z  
* @since 2006-2-2 x) jc  
* @version 1.0 ?8qN8rk^+  
*/ %Rt 5$+dNT  
public class ImprovedMergeSort implements SortUtil.Sort { Nwj M=GG  
u4tv= +jh  
private static final int THRESHOLD = 10; Tn"@u&P *  
{%_D> y  
/* \9fJ)*-  
* (non-Javadoc) 99\lZ{f(  
* +[ng99p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V%(T#_E/6  
*/ An_3DrUFV_  
public void sort(int[] data) { KVevvy)W  
int[] temp=new int[data.length]; 2]y Hxo/6  
mergeSort(data,temp,0,data.length-1); \[G"/]J  
} ]z!Df\I  
Kv)Kn8df  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4/V;g%0uN;  
int i, j, k; TNDp{!<|L;  
int mid = (l + r) / 2; Q@"}v_r4  
if (l == r) )<%CI#s#  
return; ^-L nO%h?  
if ((mid - l) >= THRESHOLD) n&!q9CR`  
mergeSort(data, temp, l, mid); ~Ede5Vg!!2  
else m 7S`u  
insertSort(data, l, mid - l + 1); 27i-B\r  
if ((r - mid) > THRESHOLD) l_s#7.9$  
mergeSort(data, temp, mid + 1, r); x~i\*Ox^  
else $ y(Qdb  
insertSort(data, mid + 1, r - mid); K5RgWP  
]s0GAp"  
for (i = l; i <= mid; i++) { 194n   
temp = data; O2":)zU.  
} z6Fl$FFP  
for (j = 1; j <= r - mid; j++) { ZA&bp{}D  
temp[r - j + 1] = data[j + mid]; mBEMwJ}O`  
} ]Exbuc  
int a = temp[l]; k]A =Q  
int b = temp[r]; nq,:UYNJ  
for (i = l, j = r, k = l; k <= r; k++) { R , #szTu  
if (a < b) { d;,Jf*x\  
data[k] = temp[i++]; B8unF=u  
a = temp; 0dIGX |e  
} else { .F'Cb)Z  
data[k] = temp[j--]; Aj]/A  
b = temp[j]; Lf:#koaC  
} guVuO  
} ex#-,;T  
} <`WDNi$Y  
l9]nrT1Hy  
/** V$w bmz  
* @param data g:.LCF  
* @param l ^I9U<iNIL  
* @param i ^F qs,^~W  
*/ \PD%=~  
private void insertSort(int[] data, int start, int len) { ?VCp_Ji  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $> ;|  
} s1R#X~d  
} 39m8iI%w[  
} /l$fQ:l  
} mG1!~}[  
GPizR|}h  
堆排序: ~$ Po3]{s  
E^Ch;)j|  
package org.rut.util.algorithm.support; mN l[D  
PZvc4  
import org.rut.util.algorithm.SortUtil; AHMvh 7O?  
OJ7 Uh_;/  
/** L8Q/!+K  
* @author treeroot o6RT4`  
* @since 2006-2-2 x[fp7*TiG  
* @version 1.0 8QMMKO ui\  
*/ <Qr*!-Kc6  
public class HeapSort implements SortUtil.Sort{ elR1NhB|p  
R%~~'/2V  
/* (non-Javadoc) #V)l>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W9{;HGWS  
*/ =jA.INin4  
public void sort(int[] data) { >0u*E *Y  
MaxHeap h=new MaxHeap(); :#\jx  
h.init(data); ]<ay_w;  
for(int i=0;i h.remove(); I?nU+t;  
System.arraycopy(h.queue,1,data,0,data.length); 6kMEm)YjT  
} 3sRI 7g  
V lkJ$f5l  
private static class MaxHeap{ R5mb4  
V6+:g=@U-l  
void init(int[] data){ 4jlwu0L+  
this.queue=new int[data.length+1]; BpGyjo J2  
for(int i=0;i queue[++size]=data; tk)}4b^\%j  
fixUp(size); V3T.EW  
} h#Mx(q  
} Hq~SRc~  
?r*}1WsH  
private int size=0; ' R2*3<  
=(~*8hJ  
private int[] queue; a^^OI|?  
{u0sbb(  
public int get() { @\:@_}Z`_}  
return queue[1]; PN= 5ICT  
} c,]fw2  
s0CDp"uJY  
public void remove() { xIV#}z0  
SortUtil.swap(queue,1,size--); Q/J<$W*,  
fixDown(1); mwn$ey&QE  
} &4%78K\  
file://fixdown Z2-tDp(I  
private void fixDown(int k) { &_s^C?x  
int j; 6(7dr?^eGT  
while ((j = k << 1) <= size) { ;mr*$Iu7|  
if (j < size %26amp;%26amp; queue[j] j++; 6ZwQ/~7H  
if (queue[k]>queue[j]) file://不用交换 nEP3B '+  
break; _mQj=  
SortUtil.swap(queue,j,k); /1m+iM^V  
k = j; E(z|LS*3  
} k py)kS  
} /!.]Y8yEH  
private void fixUp(int k) { GO*D4<#u  
while (k > 1) { BlM(Q/z  
int j = k >> 1; U ]B-B+-  
if (queue[j]>queue[k]) arS@l<79  
break; 5E 9R+N  
SortUtil.swap(queue,j,k); xX0 wn?,~  
k = j; {iCX?Sb  
} sk_xQo#Y 3  
} gxJ12' m  
h`eHoKJ#w  
} h Fan$W$  
'*Tt$0#o  
} ynf!1!4  
&OkPO|  
SortUtil: _PQk<QZ  
<]_[o:nOP  
package org.rut.util.algorithm; ^rO!-  
}[PC YnS  
import org.rut.util.algorithm.support.BubbleSort; qP zxP @4  
import org.rut.util.algorithm.support.HeapSort; jK%Lewq  
import org.rut.util.algorithm.support.ImprovedMergeSort; (dx~lMI  
import org.rut.util.algorithm.support.ImprovedQuickSort;  @k#xr  
import org.rut.util.algorithm.support.InsertSort; 32y 9rz  
import org.rut.util.algorithm.support.MergeSort; yigq#h^  
import org.rut.util.algorithm.support.QuickSort; YN7O Qqa  
import org.rut.util.algorithm.support.SelectionSort; cBU3Q<^  
import org.rut.util.algorithm.support.ShellSort; hBifn\dFr  
ah(k!0PV  
/** d DAl n+  
* @author treeroot )c 79&S  
* @since 2006-2-2 yMmUOIxk\  
* @version 1.0 DMSC(Sz  
*/ ;#8xRLW  
public class SortUtil { .$Yp~  
public final static int INSERT = 1; E8t{[N6d  
public final static int BUBBLE = 2;  tO D}&  
public final static int SELECTION = 3; 9+8N-LZ  
public final static int SHELL = 4; bb+iUV|Do  
public final static int QUICK = 5; K(?p]wh  
public final static int IMPROVED_QUICK = 6; kbbHa_;aqV  
public final static int MERGE = 7; rt?*eC1b+Z  
public final static int IMPROVED_MERGE = 8; 8wEJyAu2  
public final static int HEAP = 9; PCa0I^d  
K$s{e0 79  
public static void sort(int[] data) { SLH;iqPT  
sort(data, IMPROVED_QUICK); 83aWMmA(1  
} ttt4h  
private static String[] name={ !9.\A:G  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "5Z5x%3I  
}; A6E~GJa  
-D1 A  
private static Sort[] impl=new Sort[]{ JL<<EPC  
new InsertSort(), F7]8*[u  
new BubbleSort(), v-"nyy-&Z  
new SelectionSort(), !kH 1|  
new ShellSort(), 0,8RA_Ca}  
new QuickSort(), 9%0^fhrJ  
new ImprovedQuickSort(), \J;]g\&I"  
new MergeSort(), & IsPqO  
new ImprovedMergeSort(), ~jz51[{v  
new HeapSort() rZ.z!10  
}; o,?h}@  
*D`$oK,U  
public static String toString(int algorithm){ N] pw7S%  
return name[algorithm-1]; RX^Xtc"  
} |0X~D}r|J  
ta'wX   
public static void sort(int[] data, int algorithm) { *_HF%JYMZ  
impl[algorithm-1].sort(data); # $'H?lO  
} QBfo=9[=e  
/#q6.du  
public static interface Sort { FJ{&R Ld  
public void sort(int[] data); hx4c`fOs  
} X+N8r^&  
Im]6-#(9\|  
public static void swap(int[] data, int i, int j) { EN8xn9M?  
int temp = data; m,}GP^<1i  
data = data[j]; fhC|=0XB  
data[j] = temp; M7-2;MZ  
} _kBx2>qQ  
} ?N@[R];  
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