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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。 P~b%;*m}8  
插入排序: y$;zTH_6j  
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package org.rut.util.algorithm.support; S%a}ip&  
.PA ?N{z  
import org.rut.util.algorithm.SortUtil; z~A(IQO  
/** U3VsMV*Y  
* @author treeroot MRxo|A{  
* @since 2006-2-2 ] BP^.N=  
* @version 1.0 `gA5P %  
*/ `siy!R  
public class InsertSort implements SortUtil.Sort{ :#"OCXr  
n=#[Mi $Y  
/* (non-Javadoc) p lz=G}Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,M9hb<:m  
*/  hE?GO,  
public void sort(int[] data) { #!F8n`C-  
int temp; C9^elcdv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  ZeDDH  
} F0o18k_"  
} hGaYQgGq  
} f|HgLFx  
]T28q/B;k  
} $(<*pU  
7zOvoQ}  
冒泡排序: n B|C-.F  
B1AF4}~5  
package org.rut.util.algorithm.support; "MVN /Gl  
:Q%yW%St$  
import org.rut.util.algorithm.SortUtil; rO2PbF3  
BRQ5  
/** BM}a?nnoc  
* @author treeroot *SpO|*'  
* @since 2006-2-2 {UjIxV(J  
* @version 1.0 N'1[t  
*/ ,'@ISCK^  
public class BubbleSort implements SortUtil.Sort{ '\3.isTsx  
DW;.R<8  
/* (non-Javadoc) l>Oe ,`9O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PeR<FSF ,i  
*/ )-7(Hv1  
public void sort(int[] data) { ?(XX  
int temp; UW~tS  
for(int i=0;i for(int j=data.length-1;j>i;j--){ JO;` Kz_$  
if(data[j] SortUtil.swap(data,j,j-1); U1@ P/  
} d`rDEa  
} Vt 5XC~jK  
} m:o$|7r  
} aG&kl O>m  
Z_TbM^N  
} @eD2<e  
k@X As  
选择排序: [O =)FiY-  
Ql!6I(  
package org.rut.util.algorithm.support; eXtF[0f  
s</ktPtu  
import org.rut.util.algorithm.SortUtil; iS^^Z ZyR  
(5\d[||9g  
/** /-} p7AM  
* @author treeroot /:];2P6#X  
* @since 2006-2-2 E9NGdp&-Ah  
* @version 1.0 MZ#2WP)F  
*/ t3kh]2t  
public class SelectionSort implements SortUtil.Sort { |x~ei_x7.p  
LB 5EGw  
/* UmHb-uk ;  
* (non-Javadoc) Sr-^faL  
* doUqUak  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y#SD-# I-  
*/ u K&_IE}  
public void sort(int[] data) { t`/RcAwA  
int temp; GVPEene  
for (int i = 0; i < data.length; i++) { 7*W$GCd8  
int lowIndex = i; SX94,5 _Q  
for (int j = data.length - 1; j > i; j--) { P xuz {  
if (data[j] < data[lowIndex]) { N=}Z#  
lowIndex = j; R yIaT  
} ;Z0cD*Jb  
} j-\^ }K.&  
SortUtil.swap(data,i,lowIndex); +=F);;!  
} +/ d8d  
} E~U|v'GCd  
)eVDp,.^  
} "g&l~N1$  
S| ?--vai_  
Shell排序: uaMm iR  
RAJ |#I1  
package org.rut.util.algorithm.support; Kwmo)|7uPU  
;bu;t#  
import org.rut.util.algorithm.SortUtil; '48|f`8$  
eh# (}v  
/** olW`.3f  
* @author treeroot )qQg n]  
* @since 2006-2-2 X| 0`$f  
* @version 1.0 BwA~*5TFu  
*/ gG|1$  
public class ShellSort implements SortUtil.Sort{ -|UX}t*  
U\plt%2m>  
/* (non-Javadoc) `e:RZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F973U  
*/ X_yU"U  
public void sort(int[] data) { JN|#   
for(int i=data.length/2;i>2;i/=2){ B~?Q. <M  
for(int j=0;j insertSort(data,j,i); >Qu^{o  
} R-0Ohj  
} J;9QDrl`  
insertSort(data,0,1); `9NnL.w!  
} I ywx1ac  
GOgT(.5  
/** ]t0S_ UH$  
* @param data J:!Gf^/)  
* @param j JqIv&W  
* @param i Ya {1/AaM  
*/ , X+(wp  
private void insertSort(int[] data, int start, int inc) { $6+P&"8  
int temp; / 1@m#ZxA:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E^ti !4{<  
} O c3%pb;  
} 9E*K44L/V  
} 69w"$V k  
Q(Y,p`>  
} (M?Q9\X  
{Z;GNMO:  
快速排序: jCa;g{#@  
,3[<C)'[  
package org.rut.util.algorithm.support; 2fA9L _:0  
`)P_X4e]`  
import org.rut.util.algorithm.SortUtil; TniKH( w/  
`cRB!w=KHV  
/** T`G"2|ISS  
* @author treeroot L-TVe  
* @since 2006-2-2 'Z9F0l"Nr  
* @version 1.0 Y3&ecEE  
*/ 73<yrBxp  
public class QuickSort implements SortUtil.Sort{ sM_e_e  
oVgNG!/c0  
/* (non-Javadoc) *a.*Ha  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kV<)>Gs  
*/ 2C&%UZim;P  
public void sort(int[] data) { d+)L\ `4  
quickSort(data,0,data.length-1); |}Lgo"cTC  
} &1Iy9&y  
private void quickSort(int[] data,int i,int j){ 4(gf!U  
int pivotIndex=(i+j)/2; p-Btbhv  
file://swap K Hc+  
SortUtil.swap(data,pivotIndex,j); e4LNnJU\|  
QQcj"s  
int k=partition(data,i-1,j,data[j]); 2geC3v% 0o  
SortUtil.swap(data,k,j); DgP%Q  
if((k-i)>1) quickSort(data,i,k-1); vGDo?X~#o  
if((j-k)>1) quickSort(data,k+1,j); 9^olAfX`dB  
xb;m m9H  
} f ebh1rUX  
/** uwzT? C A6  
* @param data K>6p5*&  
* @param i SW, Po>Y  
* @param j a^,RbV/  
* @return }A ^,y  
*/ hglt D8,  
private int partition(int[] data, int l, int r,int pivot) { 1i2w<VG1  
do{ h!]A(T\J  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K@hUif|([  
SortUtil.swap(data,l,r); &9{BuBO[  
} ,:{+ H  
while(l SortUtil.swap(data,l,r); EC/R|\d?Un  
return l; xnOlV  
} [J Xrj{  
u&bU !ZI  
} tsD^8~ t|h  
55\mQ|.Jn  
改进后的快速排序: .@V>p6MV  
V|`|CVFo]  
package org.rut.util.algorithm.support; Zv93cv  
VV0$L=mo  
import org.rut.util.algorithm.SortUtil; +Eg# 8/q  
* vD<6qf  
/** P!EX;+7+x  
* @author treeroot g7-K62bb  
* @since 2006-2-2 ] ={Hq9d@  
* @version 1.0 hrF4 a$  
*/ ;;5i'h~?]J  
public class ImprovedQuickSort implements SortUtil.Sort { VCO/s9AL  
P $S P4F  
private static int MAX_STACK_SIZE=4096; t1S~~FLE  
private static int THRESHOLD=10; Qt 2hb  
/* (non-Javadoc) ^p/mJ1/s7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cO9Aw!  
*/ 2hP8ZfvIR  
public void sort(int[] data) { .VT,,0  
int[] stack=new int[MAX_STACK_SIZE]; Is[0ri   
":ycyN@g  
int top=-1; 79_MP  
int pivot; Viw3 /K  
int pivotIndex,l,r; =KLYR UW  
QZol( 2~Y  
stack[++top]=0; D.?gV_  
stack[++top]=data.length-1; cALs;)z  
I4'j_X t  
while(top>0){ %+~0+ev7r  
int j=stack[top--]; +L6d$+  
int i=stack[top--]; "?SnA +)  
v},sWjv  
pivotIndex=(i+j)/2; ZtDpCl_  
pivot=data[pivotIndex]; \ :.p8`  
D5x^O2  
SortUtil.swap(data,pivotIndex,j); ,PY e7c  
g:yK/1@Hk}  
file://partition p20Nk$.  
l=i-1; V5+a[`]  
r=j; &PX'=UT  
do{ 0'uj*Y{L  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hkG<I';M?M  
SortUtil.swap(data,l,r); 0ZN/-2c A#  
} mf#oa~_  
while(l SortUtil.swap(data,l,r); q`hg@uwA{`  
SortUtil.swap(data,l,j); wlJ1,)n^2  
#A!0KN;GC2  
if((l-i)>THRESHOLD){ cf9y0  
stack[++top]=i; {;U:0BPI3  
stack[++top]=l-1; Nsq%b?#  
} iKwVYL  
if((j-l)>THRESHOLD){ .PgkHb=l@  
stack[++top]=l+1; *6L^A`_1]  
stack[++top]=j; uY,FugWbl  
} x/~M=][tN  
3-'|hb  
} gK /K Z8  
file://new InsertSort().sort(data); 4)_ [)MZ\j  
insertSort(data); OuoZd!"qf  
} $)3/N&GXR  
/** {+;8dtZ)x  
* @param data l}x{.q7U l  
*/ tR3hbL$W  
private void insertSort(int[] data) { @u^Ib33  
int temp; 43Q&<r$[T  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <9"i_d%  
} CJ_B.  
} Z5Cv$bUc  
} W3b\LnUa  
~X/T6(n$  
} [>E0(S]  
IWkBq]Y  
归并排序: })B)-8  
^:BRbp37i  
package org.rut.util.algorithm.support; \MU4"sXw  
PA E)3  
import org.rut.util.algorithm.SortUtil; L<: ya  
dx^3(#B  
/** yAOC<d9 E  
* @author treeroot [ LCi,  
* @since 2006-2-2 m<E7cY3mX  
* @version 1.0 I ; _.tG  
*/ Nn$$yUkMX  
public class MergeSort implements SortUtil.Sort{ 08Q:1 '  
-?uwlpm#  
/* (non-Javadoc) 0*q:p`OLw*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eMs`t)rQ  
*/ sb1/4u/W  
public void sort(int[] data) { wgrYZ^]  
int[] temp=new int[data.length]; &>-Cz%IV  
mergeSort(data,temp,0,data.length-1); U+KbvkX wj  
} MIgIt"M jz  
7Ny>W(8  
private void mergeSort(int[] data,int[] temp,int l,int r){  m ]\L1&  
int mid=(l+r)/2;  6?6 u  
if(l==r) return ; z"<PveVo  
mergeSort(data,temp,l,mid); |^ qW   
mergeSort(data,temp,mid+1,r); 8]O|$8'"  
for(int i=l;i<=r;i++){ <^=k~7m  
temp=data; PSRGlxdO  
} JOMZ&c^  
int i1=l; zVIzrz0  
int i2=mid+1; ! `SR$dnE  
for(int cur=l;cur<=r;cur++){ B7#;tCf  
if(i1==mid+1) | c;S'36  
data[cur]=temp[i2++]; L2 I/h`n"  
else if(i2>r) 7Qo*u;fr  
data[cur]=temp[i1++]; V #=N?p  
else if(temp[i1] data[cur]=temp[i1++]; T/H*Bo *=5  
else .m<-)Kx  
data[cur]=temp[i2++]; BjA|H  
} KT3[{lr  
} xe5>)\18-  
U}UIbJD*=  
} ?f%@8%px  
(k[<>$hL*  
改进后的归并排序: eN/Jb;W  
n1H*][CK  
package org.rut.util.algorithm.support; ^#G>P0mG%  
 (vY10W{  
import org.rut.util.algorithm.SortUtil; L9x,G!  
`q F:rQ  
/** lU\|F5O@#  
* @author treeroot qB8<(vBP+  
* @since 2006-2-2 %hXa5}JL  
* @version 1.0 a(m#GES  
*/ w'UP#vT5&  
public class ImprovedMergeSort implements SortUtil.Sort { YXmLd'F^3  
f`?|A  
private static final int THRESHOLD = 10; U8moVj8w1  
`aCcTs7~]p  
/* Q[}mH: w  
* (non-Javadoc) =14pEe  
* =~R 0U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6ds&n#n  
*/ V482V#BP  
public void sort(int[] data) { jildiT[s  
int[] temp=new int[data.length]; [9w8oNg0  
mergeSort(data,temp,0,data.length-1); *`dGapd3  
} [x@iqFO9  
W] RxRdY6[  
private void mergeSort(int[] data, int[] temp, int l, int r) { d@C93VYp  
int i, j, k; L:~ "Vw6]_  
int mid = (l + r) / 2; M,l Ib9  
if (l == r) NWTsL OIm  
return; #KiRH* giU  
if ((mid - l) >= THRESHOLD) ^fRA$t  
mergeSort(data, temp, l, mid); AR&u9Y)I  
else ^.k}YSWut  
insertSort(data, l, mid - l + 1); Jr#ptf"Wu  
if ((r - mid) > THRESHOLD) 9X!OQxmg  
mergeSort(data, temp, mid + 1, r); J H6\;G6  
else P,,@&* :  
insertSort(data, mid + 1, r - mid); d=q2Or   
6Z7{|B5}Y  
for (i = l; i <= mid; i++) { :g][99  
temp = data; dD#A.C,Rz  
} S]k<Ixvf  
for (j = 1; j <= r - mid; j++) { ETYw  
temp[r - j + 1] = data[j + mid]; J.~$^-&!  
} N8:vn0ww  
int a = temp[l]; Cfa?LgSz  
int b = temp[r]; (d@lG*K  
for (i = l, j = r, k = l; k <= r; k++) { hMi`n6m  
if (a < b) { < =sO@0(<  
data[k] = temp[i++]; >i=mw5`D]  
a = temp; iQ:]1H s  
} else {  E{h   
data[k] = temp[j--]; SeKU ?\  
b = temp[j]; Qb/qUUQO;0  
} 5v8_ji#l[  
} 9=Y-w s  
} ~p^6  
|R DPx6!V  
/** <!R~G-D#_T  
* @param data , LX]  
* @param l `9%@{Ryo  
* @param i 7@5}WNr  
*/ :,% vAI  
private void insertSort(int[] data, int start, int len) { o[0Cv*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); G-xW&wC-  
} *e!0ZB3J  
} Fep#Pw1  
} vEk jd#  
} DhYQ>Gv8U  
*#w+*ywVZH  
堆排序: LDx1@a|83  
D!+d]A[r  
package org.rut.util.algorithm.support; ymiOtA Z  
*{/BPc0*  
import org.rut.util.algorithm.SortUtil; cE$7CSR  
tY~EB.%  
/** TDq(%IW  
* @author treeroot +QGZ2_vW  
* @since 2006-2-2 7X*$Fu<  
* @version 1.0 7='lu;=,  
*/ IZoS2^:yw  
public class HeapSort implements SortUtil.Sort{ q ^Un,h64t  
8XIG<Nc  
/* (non-Javadoc) Ko|nF-r_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9@/ X;zO  
*/ "AMbU6 8  
public void sort(int[] data) { ;shhg z$  
MaxHeap h=new MaxHeap(); 7j| ^ZuI+  
h.init(data); F[R Q6 PW  
for(int i=0;i h.remove(); ).0klwfV  
System.arraycopy(h.queue,1,data,0,data.length); L3/m}AH,  
} 4i|yEf  
T)? : q  
private static class MaxHeap{ QH7"' u6  
~-ZquJ-  
void init(int[] data){ &c>%E%!"  
this.queue=new int[data.length+1]; 3}~.#`QeY  
for(int i=0;i queue[++size]=data; f9ux+XQk9  
fixUp(size); ^h\& l{e  
} Is57)(^.-  
} .^ djt  
'-c *S]:r  
private int size=0; 4@19_+3  
W>W b|W  
private int[] queue; a4aM.o  
S\5%nz \  
public int get() { 5,dKha  
return queue[1]; Bl[4[N  
} 0+S ;0  
>V1vw7Pa  
public void remove() { o rBB5JJ  
SortUtil.swap(queue,1,size--); k6eh$*!  
fixDown(1); # `L?24%  
} P! cfe@;<4  
file://fixdown %vn"tp  
private void fixDown(int k) { YF8;s4  
int j; a=_+8RyVQ  
while ((j = k << 1) <= size) { ;Qn)~b~  
if (j < size %26amp;%26amp; queue[j] j++;  N$ oQK(  
if (queue[k]>queue[j]) file://不用交换 {:;6 *W  
break; VN3 [B eH  
SortUtil.swap(queue,j,k);  GY`mF1b  
k = j; pTeN[Yu?  
} ) KvGJo)("  
} A_8Xhem${  
private void fixUp(int k) { m3#rU%Wj  
while (k > 1) { 5]f6YlJZ  
int j = k >> 1; wE~&Y? ^  
if (queue[j]>queue[k]) LO;7NK  
break; Uv)B  
SortUtil.swap(queue,j,k); @bRKJPU9)  
k = j; h-.xx 4D  
} l"zwH  
} 3QI.|;X  
t1`.M$  
} 1S+lHG92I  
JIc(hRf9>  
} O,PTY^  
w%1-_;.aU6  
SortUtil: I|x? K>  
mV'-1  
package org.rut.util.algorithm; NoOrQ m  
O2qy[]km  
import org.rut.util.algorithm.support.BubbleSort; -xXdT$Xd  
import org.rut.util.algorithm.support.HeapSort; G)IK5zCDd  
import org.rut.util.algorithm.support.ImprovedMergeSort; U3**x5F_  
import org.rut.util.algorithm.support.ImprovedQuickSort; v? Zo5uVoq  
import org.rut.util.algorithm.support.InsertSort; DuQW?9^232  
import org.rut.util.algorithm.support.MergeSort; mWUkkR(/  
import org.rut.util.algorithm.support.QuickSort; prEI9/d"  
import org.rut.util.algorithm.support.SelectionSort; ;,lFocGv  
import org.rut.util.algorithm.support.ShellSort; Y{d-k1?s5  
D wfw|h  
/** v#|yr<  
* @author treeroot ?WP*At0  
* @since 2006-2-2 ^ 0.`1$  
* @version 1.0 xs6kr  
*/ eC3 ~|G_O  
public class SortUtil { 'iWDYZ?  
public final static int INSERT = 1; b+`qGJrej  
public final static int BUBBLE = 2; yGY:EvH^?  
public final static int SELECTION = 3; %(1Jt "9|  
public final static int SHELL = 4; f"z;'  
public final static int QUICK = 5; T' =6_?7K4  
public final static int IMPROVED_QUICK = 6; {TXfi'\  
public final static int MERGE = 7; yUjkRT&h  
public final static int IMPROVED_MERGE = 8; Xhs*nt%l  
public final static int HEAP = 9; ,!O]c8PcU  
4V&(w, zl  
public static void sort(int[] data) { SM8f"H28  
sort(data, IMPROVED_QUICK); F%f)oq`B  
}  RnSll-  
private static String[] name={ p\P)    
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =w!2R QB  
}; cd|/ 4L 6  
T65"?=<EB  
private static Sort[] impl=new Sort[]{ LAFxeo  
new InsertSort(), -^Qm_lN  
new BubbleSort(), &+0?Xip{Z  
new SelectionSort(), 8<x& Xd  
new ShellSort(), R=<%!  
new QuickSort(), 4,0 8`5{  
new ImprovedQuickSort(), =9h!K:,k  
new MergeSort(), 6 w'))Z  
new ImprovedMergeSort(), klAvi%^jE  
new HeapSort() '|<r[K  
}; O!ilTMr  
nDS\2  
public static String toString(int algorithm){ OZ33w-X<  
return name[algorithm-1]; ;F_P<b 2  
} \.'[!GE*c  
1Va=.#<  
public static void sort(int[] data, int algorithm) { F9"Xu-g  
impl[algorithm-1].sort(data); erKi*GssZ  
} i &%m^p  
+ 9I|F m  
public static interface Sort { Qz89=#W  
public void sort(int[] data); ~Ajst!Y7=  
} 3Vbt(K  
h=qT@)h1>  
public static void swap(int[] data, int i, int j) { u* G+=aV.6  
int temp = data; FJ{/EloF  
data = data[j]; &2Ef:RZF  
data[j] = temp; wPX^P  
} O^PN{u  
} ;b (ww{&  
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