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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。 l# }As.o}  
插入排序:  F|DR  
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package org.rut.util.algorithm.support; !."Izz/  
]r"31.w(  
import org.rut.util.algorithm.SortUtil; ~GAlNIv]  
/** h<+PP]l=  
* @author treeroot -7&^jP\,  
* @since 2006-2-2 ?T tQZ  
* @version 1.0 dl7Riw-J  
*/ Q]yV:7  
public class InsertSort implements SortUtil.Sort{ L[`R8n1C  
SJso'6 g  
/* (non-Javadoc) K-N]h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A9NOeE  
*/ +8MW$ m$  
public void sort(int[] data) { +8L(pMI4  
int temp; NEjPU#@c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :(5]Z^  
} f6keWqv<GW  
} :!r9 =N9  
} Bu*W1w\  
a7ub.9>  
} |Ba4 G`  
3?a0 +]  
冒泡排序: @m*&c*r  
Oex{:dO "F  
package org.rut.util.algorithm.support; |!?2OTY  
rD:gN%B=  
import org.rut.util.algorithm.SortUtil; vo:52tCk}m  
O|A~dj `  
/** @9 n #vs  
* @author treeroot 0IoXDx  
* @since 2006-2-2 `I]1l MJ)o  
* @version 1.0 hY\Eh.  
*/ Q `J,dzY  
public class BubbleSort implements SortUtil.Sort{ L,s|gt v  
QO1A976o  
/* (non-Javadoc) 6i*ArGA   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S3%.-)ib  
*/ ">0/>>Ry  
public void sort(int[] data) { d A_S"Zc  
int temp; WLg6-@kxXs  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -o=P85 V  
if(data[j] SortUtil.swap(data,j,j-1); eXskwV+7  
} clPZd  
} YR^Ee8_H  
} l%-67(  
} 4~]8N@Bii  
[ZL r:2+z  
} B|Rpm^ |  
0 .6X{kO  
选择排序: ,kGw;8X  
N"q+UCRC  
package org.rut.util.algorithm.support; UUdu;3E=5  
$sd3h\P&R  
import org.rut.util.algorithm.SortUtil; ];d5X  
i_oro "%yL  
/** ;-Y]X(z>  
* @author treeroot mh!N^[=n  
* @since 2006-2-2 g:~?U*f-  
* @version 1.0 Z~-T0Ab-  
*/ f)u*Q!BDD  
public class SelectionSort implements SortUtil.Sort { %x cM_|AyR  
zm;*:]S  
/* s +y'<88  
* (non-Javadoc) )7Hon  
* "NX m\`8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [9YlLL@  
*/ E :'  
public void sort(int[] data) { dy8In%  
int temp; ,q'gG`M N  
for (int i = 0; i < data.length; i++) { eMpEFY  
int lowIndex = i; g%fJyk'  
for (int j = data.length - 1; j > i; j--) { B $ y44  
if (data[j] < data[lowIndex]) { R:pBbA7E  
lowIndex = j; LX(iuf+l  
} -Y 6.?z  
} 8JjU 9#  
SortUtil.swap(data,i,lowIndex); ^t/'dfF  
} `a/PIc"  
} 1drqWI~  
web8QzLLB  
} 1 o  
MQbNWUi  
Shell排序: ..Uw8u/  
2]_4&mU  
package org.rut.util.algorithm.support; pjmGzK  
}LHT#{+ x  
import org.rut.util.algorithm.SortUtil; \Z6gXO_  
!S > |Qh  
/** ziB]S@U  
* @author treeroot N18diP[C  
* @since 2006-2-2 Nw3I   
* @version 1.0 2EqsfU* I  
*/ =yhn8t7@]  
public class ShellSort implements SortUtil.Sort{ N,sqrk]  
OH!$5FEc  
/* (non-Javadoc) vxzf[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d <|lLNS  
*/ cc2oFn  
public void sort(int[] data) { H>X\C;X[  
for(int i=data.length/2;i>2;i/=2){ Jegx[*O>b  
for(int j=0;j insertSort(data,j,i); yG4LQE  
} C9z~)aL}7  
} ~H yyq-  
insertSort(data,0,1); vhE}{ED  
} p0y0T|H^  
m|e*Jc  
/** G\,A> mT/P  
* @param data uz#eO|z@o  
* @param j ;*37ta  
* @param i q_T?G e  
*/ {Y@-*pL]  
private void insertSort(int[] data, int start, int inc) { tmY-m,U  
int temp; B;D:9K  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); . ;ea]_Z  
} Fgc:6<MGM  
} _1>(GK5[  
} r3BDq  
~D`oP/6  
} S'%cf7Z  
t\|K"  
快速排序: asmW W8lz  
abJ@>7V  
package org.rut.util.algorithm.support; 3qxG?G N  
jFPE>F7-M  
import org.rut.util.algorithm.SortUtil; F)<G]i8n~  
h2/1S{/n]  
/** hOrk^iYN=  
* @author treeroot + k(3+b$S-  
* @since 2006-2-2 ) R a/  
* @version 1.0 ~a8G 5M  
*/ 5S-o 2a  
public class QuickSort implements SortUtil.Sort{ YL&b9e4  
1UA~J|&gi^  
/* (non-Javadoc)  /nD0hb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M5ySs\O4  
*/ lA Ck$E  
public void sort(int[] data) { !>kv.`|7~  
quickSort(data,0,data.length-1); Zh~Lm  
} zQ6 -2 A  
private void quickSort(int[] data,int i,int j){ Y5A~iGp8E  
int pivotIndex=(i+j)/2; VqO<+~M,E  
file://swap A*26'  
SortUtil.swap(data,pivotIndex,j); W|-N>,G  
@IyH(J],h  
int k=partition(data,i-1,j,data[j]); {,  *Y  
SortUtil.swap(data,k,j); 4k&O-70y4^  
if((k-i)>1) quickSort(data,i,k-1); !Bd* L~D  
if((j-k)>1) quickSort(data,k+1,j); CXP $bt}  
Q3'B$,3O^  
} RzY`^A6G6  
/** NV:XPw/  
* @param data  eS@!\H x  
* @param i '*LN)E> d  
* @param j hZ\W ?r  
* @return 9bcyPN  
*/ E[Ws} n.  
private int partition(int[] data, int l, int r,int pivot) { fF-\TW  
do{ #+ lq7HJ1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j+B5m:ExfI  
SortUtil.swap(data,l,r); 6q uWO2x  
} D@b<}J>0'  
while(l SortUtil.swap(data,l,r); T~~$=vP9  
return l; `Py= ?[cD  
} 3_eml\CY  
?D^,K`wY=B  
} Xx<&6 4W  
uA/.4 b  
改进后的快速排序: *ZSp9g"Z  
u+tb83 ~[=  
package org.rut.util.algorithm.support; e'?d oP  
~ ew**@N  
import org.rut.util.algorithm.SortUtil; ^(m6g&$(  
[?f.0q  
/** g /@yK  
* @author treeroot UG?C=Tf  
* @since 2006-2-2 5@Lxbe( q  
* @version 1.0 0) Um W{  
*/ VU0tyj$  
public class ImprovedQuickSort implements SortUtil.Sort { J)yy}[Fx  
lbuW*)  
private static int MAX_STACK_SIZE=4096; =UKR<@QrK  
private static int THRESHOLD=10; .gkPG'm[  
/* (non-Javadoc) AoOG[to7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SnF[mN'  
*/ _Il9s#NA%  
public void sort(int[] data) { *I1W+W`G  
int[] stack=new int[MAX_STACK_SIZE]; 3w:Z4]J  
jUR #  
int top=-1; Z2j*%/  
int pivot; A"3&EuvU  
int pivotIndex,l,r; llG#nDe  
g Wv+i/,  
stack[++top]=0; [QqNsco)  
stack[++top]=data.length-1; Q]g4gj  
GxDF7 z%&  
while(top>0){ ?nSp?m;  
int j=stack[top--]; NUnc"@  
int i=stack[top--]; a*8.^SdzR  
;@Hi*d[  
pivotIndex=(i+j)/2; e%c5 OZ3~  
pivot=data[pivotIndex]; K#sb"x`  
i7FR78^  
SortUtil.swap(data,pivotIndex,j); ._8cJf.ae  
= SJF \Z  
file://partition %iS]+Sa.K  
l=i-1; (*WZsfk>/<  
r=j; @[kM1:G-F{  
do{ NlEWm8u   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _5S$mc8K0  
SortUtil.swap(data,l,r); JTB~nd>  
} +e4<z%1  
while(l SortUtil.swap(data,l,r); CU`Oc>;*T  
SortUtil.swap(data,l,j); g!Yh=kA'N  
pfQZ|*>lkb  
if((l-i)>THRESHOLD){ *|#JFy?c[  
stack[++top]=i; l}-`E@w  
stack[++top]=l-1; /Vd#q)b%T  
} 1Da [!^u,D  
if((j-l)>THRESHOLD){ _xL&sy09t  
stack[++top]=l+1; z*~ PYAt  
stack[++top]=j; m"7R 4O  
} Y6%OV?}v!  
@ h`Zn1;  
} n@,eZ!  
file://new InsertSort().sort(data); p{svXP K  
insertSort(data); W#_gvW  
} vMdhNOU  
/** Lz{T8yvZ  
* @param data fX$4TPy(h  
*/ P:-/3  
private void insertSort(int[] data) { 7Z~szD  
int temp; :h^UC~[h 3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ci9wF (<k  
} V;]VwsZ"  
} 14YV#o:  
} -x\l<\*  
[*ovYpj^  
} UVmyOC[Y{  
d?y\~<  
归并排序: d#:J\2V"R  
}J'w z;t1  
package org.rut.util.algorithm.support; y* Q-4_%,  
m1o65FsY08  
import org.rut.util.algorithm.SortUtil; ?!j/wV_H  
];~[Olc  
/** (0m$W<  
* @author treeroot 2LH;d`H[0  
* @since 2006-2-2 e.ym7L]$O  
* @version 1.0 Wy>\KrA1  
*/ E/P53CD  
public class MergeSort implements SortUtil.Sort{ r_sl~^* :  
7^ {hn_%;  
/* (non-Javadoc) #I~dv{RX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PH%gX`N  
*/ WM )g(i~(  
public void sort(int[] data) { Q R$sIu@%  
int[] temp=new int[data.length]; :p)9Heu  
mergeSort(data,temp,0,data.length-1); cE>/iZc  
} }e =GvWGa  
Pc4c Sw#5  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1gej$G@  
int mid=(l+r)/2; J7^T!7V.  
if(l==r) return ; xQ 3u  
mergeSort(data,temp,l,mid); t\d;}@bl  
mergeSort(data,temp,mid+1,r); M]TVaN$v#  
for(int i=l;i<=r;i++){ c O>:n  
temp=data; 6@ ^`-N;  
} pYUkd!K"  
int i1=l; |F {E4mg(o  
int i2=mid+1; rPvX8*) tV  
for(int cur=l;cur<=r;cur++){ ,;pX.Ob U  
if(i1==mid+1) V*uu:  
data[cur]=temp[i2++]; t U= b~  
else if(i2>r) }eFUw  
data[cur]=temp[i1++]; ?o5#Ve$-X  
else if(temp[i1] data[cur]=temp[i1++]; @@mW+16  
else vUx$[/<  
data[cur]=temp[i2++]; yzb&   
} @Hdg-f>y]  
} > 0)`uJ  
VZbIU[5  
} ?Cfp=85ea!  
U zHhU*nW  
改进后的归并排序: Pm;*Jv%  
p:   
package org.rut.util.algorithm.support; F ) ~pw  
QnLg P7Ft  
import org.rut.util.algorithm.SortUtil; `^k<.O  
MtTHKp   
/** T sW6w  
* @author treeroot _?LI0iIFx  
* @since 2006-2-2 yZaDNc9'  
* @version 1.0 0%j; yzQ<  
*/ } U1shG[  
public class ImprovedMergeSort implements SortUtil.Sort { Qh%vh ;|^  
jN>UW}?  
private static final int THRESHOLD = 10; Jn&>Z? @  
e ;r-}U  
/* D|3QLG  
* (non-Javadoc) CGl+!t{  
* irj}:f;!eF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |ema-pRC  
*/ , )3+hnFY  
public void sort(int[] data) { 2dW-WHaM  
int[] temp=new int[data.length]; G)|HFcE  
mergeSort(data,temp,0,data.length-1); jF85bb$  
} 5z]KkPQ  
)X$n'E  
private void mergeSort(int[] data, int[] temp, int l, int r) { =DwH*U /YR  
int i, j, k; o;C)!  
int mid = (l + r) / 2; Qnh1s u5  
if (l == r) yE{UV>ry  
return; 4zbV' ]  
if ((mid - l) >= THRESHOLD) io_64K+K  
mergeSort(data, temp, l, mid); b?L43t,  
else 9 NSYrIQ"  
insertSort(data, l, mid - l + 1); j'cCX[i  
if ((r - mid) > THRESHOLD) v A~hkkj{  
mergeSort(data, temp, mid + 1, r); R$`T"C"  
else o%Q2.  
insertSort(data, mid + 1, r - mid); Ll48)P{+}V  
o7B+f  
for (i = l; i <= mid; i++) { OZ9j3Q;a$  
temp = data; k5CIU}H"  
} tvCTC ey  
for (j = 1; j <= r - mid; j++) { 8#-}3~l[  
temp[r - j + 1] = data[j + mid]; `P*j~ZLlXN  
} /^ 7 9|$E  
int a = temp[l]; kIo?<=F8T  
int b = temp[r]; y%Ah"UY  
for (i = l, j = r, k = l; k <= r; k++) { aKcV39brr  
if (a < b) { * OFT)S  
data[k] = temp[i++]; o62gLO]z@  
a = temp; wj~8KHan  
} else { J1MnkxJmpQ  
data[k] = temp[j--]; #R| 4(HlL  
b = temp[j]; b~echOj  
} +Q&@2 oY"  
} u:?RdB}B_@  
} ]xs\,}I%  
NKYyMHv6  
/** zaPR>:r0  
* @param data CcE TS}Q0C  
* @param l Pfy;/}u^c  
* @param i ^r$5];n  
*/ $yJfAR  
private void insertSort(int[] data, int start, int len) { ga%77t|jm3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q"uu&JC  
} aW5~z^I  
} i?9Lf  
} Pw1H) <X  
} kp"cHJNx  
yB[ LO( i  
堆排序: AP@d2{"m}  
#}?$mxME*  
package org.rut.util.algorithm.support; F@3,>~[%I  
oaE3Aa  
import org.rut.util.algorithm.SortUtil; ]P^ +~  
6Wp:W1E{`  
/** =wc[ r?7  
* @author treeroot Hq8.O/Y"=  
* @since 2006-2-2 G9Ezm*I;:  
* @version 1.0 ST.W{:X   
*/ qxh\umm+2  
public class HeapSort implements SortUtil.Sort{ b2H6}s"=w  
9!h+LGs(,  
/* (non-Javadoc) euK!JZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .quc i(D  
*/ cd#TKmh7re  
public void sort(int[] data) { -`o:W?V$u  
MaxHeap h=new MaxHeap(); X_2I4Jz]6  
h.init(data); ['<rfK  
for(int i=0;i h.remove(); k5M(Ve  
System.arraycopy(h.queue,1,data,0,data.length); "m5ZZG#R`  
} v-qS 'N 4  
dRmTE  
private static class MaxHeap{ yKJp37R  
 _>l,%n  
void init(int[] data){ A 78{b^0*  
this.queue=new int[data.length+1]; zvWQ&?&o2  
for(int i=0;i queue[++size]=data; 38^_(N  
fixUp(size); SQK6BEjE8  
} llJ)u!=5  
} 0Jrk(k!  
wAYc)u#  
private int size=0; hJ :+*46  
m? hX=  
private int[] queue; ap!<8N  
oY: "nE  
public int get() { ;MD{p1w  
return queue[1]; 3 -FNd~%  
} `)fGw7J {  
|v&&%>A2  
public void remove() { )Ec;krb+  
SortUtil.swap(queue,1,size--); s+11) ~  
fixDown(1); }, H,ky  
} ]]4E)j8  
file://fixdown ^C{a'  
private void fixDown(int k) { ~qF9*{~!  
int j; f#jAjzmYL  
while ((j = k << 1) <= size) { zb(u?U  
if (j < size %26amp;%26amp; queue[j] j++; +TX]~k79Oq  
if (queue[k]>queue[j]) file://不用交换 =&'j;j  
break; WUWQcJj  
SortUtil.swap(queue,j,k); FtXEudk  
k = j; tKs0]8tc  
} HT'dft #  
} H#D=vx'  
private void fixUp(int k) { I{ $|Ed1  
while (k > 1) { _ U\vHa$#  
int j = k >> 1; sQvEUqy9  
if (queue[j]>queue[k]) KqQrxi?f-  
break; ^B/{  
SortUtil.swap(queue,j,k); rRW&29A  
k = j; &wfM:a/c  
} |V& k1{V  
} 2#^[`sFPO  
P\R3/g  
} tg:x}n  
V/Tp&+Z.c  
} WJ@,f%=<~  
sC j3h  
SortUtil: -?[:Zn~$a  
(\T?p9  
package org.rut.util.algorithm; ;Ba f&xK  
wU3Q  
import org.rut.util.algorithm.support.BubbleSort; Q. >"@c[  
import org.rut.util.algorithm.support.HeapSort; J=sQ].EK  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4 _ 3\4  
import org.rut.util.algorithm.support.ImprovedQuickSort; G2rvi=8=  
import org.rut.util.algorithm.support.InsertSort; <8Ad\MU  
import org.rut.util.algorithm.support.MergeSort; Nuj%8om6  
import org.rut.util.algorithm.support.QuickSort; J_,y?}.e3  
import org.rut.util.algorithm.support.SelectionSort; 8K qv)FjB  
import org.rut.util.algorithm.support.ShellSort; !O\r[c  
'*pq@|q;t  
/** {`:!=  
* @author treeroot R] dB Uu  
* @since 2006-2-2 I4$a#;  
* @version 1.0 ,SBL~JJ  
*/ &lD4-_2J  
public class SortUtil { 4 ClW*l  
public final static int INSERT = 1; C1_NGOvT  
public final static int BUBBLE = 2; QwiC2}/  
public final static int SELECTION = 3; ~ rRIWfhb  
public final static int SHELL = 4; q+z,{K  
public final static int QUICK = 5; #Rs7Ieu+  
public final static int IMPROVED_QUICK = 6; OG.`\G|  
public final static int MERGE = 7; s=q}XIWK  
public final static int IMPROVED_MERGE = 8; k3Y>QN|q8  
public final static int HEAP = 9; -Fb/GZt|  
y ^YrGz.  
public static void sort(int[] data) { S7V;sR"V2  
sort(data, IMPROVED_QUICK); Uc&0>_Z  
} 49CMRO,T  
private static String[] name={ ^E9@L ??  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :Q%&:[2  
}; mU*GcWbc+  
? in&/ZrB  
private static Sort[] impl=new Sort[]{ P iN3t]2  
new InsertSort(), #2}S83 k  
new BubbleSort(), L%"&_v#a^  
new SelectionSort(), ?p5Eo{B  
new ShellSort(), 2oN lQiE_  
new QuickSort(), Yd@9P 2C  
new ImprovedQuickSort(), nX   
new MergeSort(), h"[ ][  
new ImprovedMergeSort(), >IRo]-,  
new HeapSort() YpiSH(70`  
}; pDu~84!])  
/HLQ  
public static String toString(int algorithm){ 7|2:;5:U  
return name[algorithm-1]; re<"%D  
} 9Y7 tI3  
-V9Cx_]y  
public static void sort(int[] data, int algorithm) { 4X^0:.bT&  
impl[algorithm-1].sort(data); wc;5tb#  
} L-fAT'!'  
'+`CwB2  
public static interface Sort { ( \]_/ W  
public void sort(int[] data); RE Hfk6YE  
} -wY6da*.W  
%o5GD  
public static void swap(int[] data, int i, int j) { Dgdh3q;  
int temp = data; k|w6&k3  
data = data[j]; j@9A!5<CCk  
data[j] = temp; TiH(HW|:  
} $u>^A<TBN  
} U\51j  
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