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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。 } Xo#/9  
插入排序: vt{[_L(h  
)0-A;X2  
package org.rut.util.algorithm.support; 1hY|XZ%qd  
AN Fes*8j  
import org.rut.util.algorithm.SortUtil; q* p  
/** NgDhdOB  
* @author treeroot SK\@w9#&$  
* @since 2006-2-2 XnZ$ %?$  
* @version 1.0 Ks P2./N  
*/ VKDOM0{V  
public class InsertSort implements SortUtil.Sort{ 9?H$0xZV  
7]vmtlL  
/* (non-Javadoc) A7Ql%$v7^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O~*i_t*i9{  
*/ \Nt 5TG_  
public void sort(int[] data) { ?Ts]zO%%Z  
int temp; uaF-3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -U/)y:k!%  
} (N9-YP?qm  
} x#EE_i/W  
} R.rc h2  
<R]m(  
} ojy^ A  
>J7slDRo  
冒泡排序: $Q/@5f'T`9  
KEOk%'c,  
package org.rut.util.algorithm.support; ;qgo=  
CM_hN>%w[  
import org.rut.util.algorithm.SortUtil; ]o<]A[<  
=y][j+WH  
/** rtuaU=U  
* @author treeroot _"1RidhH  
* @since 2006-2-2 &>zH.6%$  
* @version 1.0 |fgUW.  
*/ `j>5W<5q\  
public class BubbleSort implements SortUtil.Sort{ eA4D.7HDK  
F@u7Oel@m  
/* (non-Javadoc) <gF]9%2E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y!=,u  
*/ IEhD5?  
public void sort(int[] data) { = wD#H@h  
int temp; 7l53&,s   
for(int i=0;i for(int j=data.length-1;j>i;j--){ r^~+ <"  
if(data[j] SortUtil.swap(data,j,j-1); Z=]SAK`  
} ;ek*2Lh  
} axnlI*!  
} pp@ Owpb  
} '0HOL)cIz  
R(wUu#n$  
} pa!BJ]~  
;M3%t=KV  
选择排序: `dZ|Ko%k  
} k2 Q  
package org.rut.util.algorithm.support; OD8 fn  
uN`/&_$c  
import org.rut.util.algorithm.SortUtil; YbZbA >|  
sy"}25s  
/** M6g8+sio  
* @author treeroot w)EY j+L  
* @since 2006-2-2  pQiC#4b  
* @version 1.0 \qG ?'Iy  
*/ ?\o~P  
public class SelectionSort implements SortUtil.Sort { HA,o2jZ?In  
;XN|dq  
/* yNvAT>H  
* (non-Javadoc) WE) *~5  
* /s4~Ij`be  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RIMSXue*Ha  
*/ P{o)Ir8Tt  
public void sort(int[] data) { *JJ8\R&P0  
int temp; :{%[6lE^G  
for (int i = 0; i < data.length; i++) { es)^^kGj6f  
int lowIndex = i; r07u6OA  
for (int j = data.length - 1; j > i; j--) { =~;~hZj  
if (data[j] < data[lowIndex]) { 8US#SI'x  
lowIndex = j; RcYUO*  
} .iy4 (P4  
} ,6>3aD1w~q  
SortUtil.swap(data,i,lowIndex); q A .9X4NQ  
} ]RT  
} O*~,L6# }  
Pe@# 6N`  
} _LaG%* R6  
n4{%M  
Shell排序: =dGp&9K,fw  
KuP#i]Na  
package org.rut.util.algorithm.support; roQI;gq^  
V ?Jy  
import org.rut.util.algorithm.SortUtil; ^2k jO/  
lx|Aw@C3~  
/** z x-[@G  
* @author treeroot cr!8Tp;2A  
* @since 2006-2-2 ^77W#{Zs  
* @version 1.0 Qf~>5(,h  
*/ _.JQ h   
public class ShellSort implements SortUtil.Sort{ Eg)24C R 4  
H\>{<`sD;f  
/* (non-Javadoc) yI^Yh{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :H&Q!\a  
*/ bN_e~z  
public void sort(int[] data) { g7zl5^o3j  
for(int i=data.length/2;i>2;i/=2){ G=cRdiy`C  
for(int j=0;j insertSort(data,j,i); +@rFbsyJ.  
} V;: k-  
} _mqU:?Q5  
insertSort(data,0,1); (,I:m[0  
} \ *t\=4  
XY'=_5t  
/** _x.2&S89  
* @param data M`&t=0D  
* @param j F7<mm7BGZ  
* @param i RW&o3_Ua  
*/ L/u|90) L  
private void insertSort(int[] data, int start, int inc) { Tr?p/9.m  
int temp; 6,=Z4>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D/E5&6  
} 8xlj,}QO\  
} Iy_5k8 ]  
} !}6'vq  
nFlN{_/  
} k1z`92"  
"e-Y?_S7R8  
快速排序: fn<dr(Dx  
M]o]D;N~l  
package org.rut.util.algorithm.support; Cj>HMB}  
~u*4k:2H  
import org.rut.util.algorithm.SortUtil; Y^]n>X  
;> 7~@ K  
/** 0o8`Y  
* @author treeroot  C O6}D  
* @since 2006-2-2 Q b^{`  
* @version 1.0 bVcJ/+Yx|  
*/ jga; q  
public class QuickSort implements SortUtil.Sort{ eztK`_n  
:?f+*  
/* (non-Javadoc) uT]$R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Q_ @@)  
*/ ~;oXLCL0})  
public void sort(int[] data) { Ezew@*(  
quickSort(data,0,data.length-1); (n?f016*%d  
} ineSo8| @  
private void quickSort(int[] data,int i,int j){  wk8fa  
int pivotIndex=(i+j)/2; VgYy7\?p  
file://swap T?!SEblP]  
SortUtil.swap(data,pivotIndex,j); >\pF5a`  
Qfy_@w]  
int k=partition(data,i-1,j,data[j]); 9H4"=!AAgD  
SortUtil.swap(data,k,j); O^-QqCZE  
if((k-i)>1) quickSort(data,i,k-1); :'ZR!w  
if((j-k)>1) quickSort(data,k+1,j); R+uZi~  
LsIZeL^  
} kDm uj>D  
/** }[PwA[k'  
* @param data _/>I-\xWA  
* @param i ,WOCG 2h  
* @param j ~?b1x+soV  
* @return 8i73iTg(  
*/ ,{q#U3  
private int partition(int[] data, int l, int r,int pivot) { O ] !tK  
do{ 2RNee@!JJP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W9c&"T9JT  
SortUtil.swap(data,l,r); 8h|}Q_  
} y,&[OrCm^\  
while(l SortUtil.swap(data,l,r); vD9.X}l]  
return l; |/l] ]+  
} {N{eOa<HA  
*: FS/ir  
} !+@70|gFF  
Q!IqvmO  
改进后的快速排序: a6z0p%sIZ  
xu-bn  
package org.rut.util.algorithm.support; |-/@3gPO  
JiXE{(  
import org.rut.util.algorithm.SortUtil; -;"A\2_y  
z0ufLxq  
/** Ofoh4BL'1@  
* @author treeroot |;Jt * _  
* @since 2006-2-2 ~e[qh+  
* @version 1.0 Sb2_&5  
*/ Kg<~Uf=1  
public class ImprovedQuickSort implements SortUtil.Sort { /K!f3o+  
*!`&+w  
private static int MAX_STACK_SIZE=4096; & }j;SK5  
private static int THRESHOLD=10; &_;=]t s  
/* (non-Javadoc) z)*{bz]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E3S0u7 Es  
*/ k-^^Ao*@  
public void sort(int[] data) { yG~Vvpv  
int[] stack=new int[MAX_STACK_SIZE]; M9Sj@ww  
{*hGe_^  
int top=-1; A-myY30  
int pivot; v?3xWXX,  
int pivotIndex,l,r; W4nn)qBrh  
/\Xe '&  
stack[++top]=0; # 7d vT=  
stack[++top]=data.length-1; [N[4\W!!  
5'{QMnfB  
while(top>0){ #>~A-k)  
int j=stack[top--]; PW"?* ~&  
int i=stack[top--]; 8VG~n?y  
+[ir7?Y.  
pivotIndex=(i+j)/2; S%?>Mh?g  
pivot=data[pivotIndex]; oGeV!hD  
9w&CHg7D i  
SortUtil.swap(data,pivotIndex,j); 6=Q6J  
Q9p2.!/C1  
file://partition $'!n4}$}  
l=i-1; (<OmYnm  
r=j; q:jv9eL.O  
do{ K'"s9b8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6b` Jq>v  
SortUtil.swap(data,l,r);  ++8 Xi1  
} ?6N\AM '  
while(l SortUtil.swap(data,l,r); i6;rh-M?.  
SortUtil.swap(data,l,j); _q@lP|  
[CV0sYEA  
if((l-i)>THRESHOLD){ /d }5R@Oy  
stack[++top]=i; Rdd9JJsVd  
stack[++top]=l-1; q9^.f9-  
} #^-'q`)  
if((j-l)>THRESHOLD){ \0qFOjVj  
stack[++top]=l+1; Tn3C0  
stack[++top]=j; #:MoZw`rlw  
} [>j.x2=  
~7\`qH  
} EW)r/Av:,  
file://new InsertSort().sort(data); ^b.fci{1m  
insertSort(data); 9(KffnE^  
} K TE*Du  
/** >Bm>/%2  
* @param data =7 -k D3  
*/ LzB*d  
private void insertSort(int[] data) { D2:ShyYAS  
int temp; r"5\\qf5*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HE2t0sAYX  
} *9r 32]i;  
} @$!"}xDR'  
} ]zvOM^l~  
7tY~8gQel  
} <%`z:G3  
`-rtU  
归并排序: K~8!Gh{h]  
<2+FE/3L  
package org.rut.util.algorithm.support; "1ZVuI  
]RW*3X  
import org.rut.util.algorithm.SortUtil; 6<n+p'+n  
6y@o[=m  
/** q1%xk =8  
* @author treeroot X=JAyxY  
* @since 2006-2-2 ^DR`!.ttr  
* @version 1.0 fhQ N;7  
*/ vmtmiN8;d  
public class MergeSort implements SortUtil.Sort{ j0e1CSE  
"&kXAwe  
/* (non-Javadoc) ! AL?bW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A^ry|4`3(  
*/ tpKQ$) ed  
public void sort(int[] data) { z#olKBs  
int[] temp=new int[data.length]; T:udw  
mergeSort(data,temp,0,data.length-1); Y{m1\s/o  
} (K> 4^E8  
0OVxx>p/x  
private void mergeSort(int[] data,int[] temp,int l,int r){ mz .uK2l{  
int mid=(l+r)/2; X]%n#\t,]  
if(l==r) return ; r6`KZ TU  
mergeSort(data,temp,l,mid); 8~h.i1L  
mergeSort(data,temp,mid+1,r); -eQ>3x&3r  
for(int i=l;i<=r;i++){ I2&R+~ktR  
temp=data; "hbCP4  
} |7$Q'3V  
int i1=l; L2Vj2o"x?  
int i2=mid+1; +{r~-Rn3  
for(int cur=l;cur<=r;cur++){ +$;#bw)yH  
if(i1==mid+1) BwJL)$D<S  
data[cur]=temp[i2++]; 9OS~;9YR  
else if(i2>r) zMg(\8  
data[cur]=temp[i1++]; /a .XWfu  
else if(temp[i1] data[cur]=temp[i1++]; 9<|nJt  
else l:.q1UV  
data[cur]=temp[i2++]; 1C5~GI`  
} '}N4SrU$  
} N0V`xrS  
N|3a(mtiZ'  
} '3uN]-A>D  
[W8"Mc|ve  
改进后的归并排序: qy( kb(J  
3P|z`}Ka  
package org.rut.util.algorithm.support; n|'}W+  
aInh?-  
import org.rut.util.algorithm.SortUtil; 0PdX>h.t  
qCI0[U@  
/** 3n)\D<f]#  
* @author treeroot (Rs|"];?Z  
* @since 2006-2-2 VD90JU]X<  
* @version 1.0 vWZ?*0^  
*/ w\}Q.$@  
public class ImprovedMergeSort implements SortUtil.Sort { C>*1f|<  
tL\L4>^7T  
private static final int THRESHOLD = 10; J] )gXVRM  
qM(@wFg  
/* C5^9D  
* (non-Javadoc) BMH?BRi  
*  q!as~{!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +EvY-mwfQ  
*/  bE%*ZB  
public void sort(int[] data) { Jl fIYf~  
int[] temp=new int[data.length]; 'R nvQ""  
mergeSort(data,temp,0,data.length-1); _}l7f  
} 3RP\w~?  
W0LJ Xp-v  
private void mergeSort(int[] data, int[] temp, int l, int r) { bmw"-W^U[  
int i, j, k; uC5W1LyI  
int mid = (l + r) / 2; )E}eK-Yu  
if (l == r) VX'G\Zz@h|  
return; rds0EZ4W  
if ((mid - l) >= THRESHOLD) )vD|VLV   
mergeSort(data, temp, l, mid); [g@ .dr3t  
else ADT8A."R[  
insertSort(data, l, mid - l + 1); Jzj>=jWX@  
if ((r - mid) > THRESHOLD) Ze3sc$fG2  
mergeSort(data, temp, mid + 1, r); 6G;t:[H G  
else a!mdL|eA@  
insertSort(data, mid + 1, r - mid); VcORRUp  
uE&2M>2  
for (i = l; i <= mid; i++) { |K'7BK_^J  
temp = data; f=Kt[|%'e  
} Yzih-$g  
for (j = 1; j <= r - mid; j++) { ZWy,NN1  
temp[r - j + 1] = data[j + mid]; D*q:X O6b  
} vf h*`G$  
int a = temp[l]; Wq/0}W.  
int b = temp[r]; %s#`Z [8,  
for (i = l, j = r, k = l; k <= r; k++) { 4/QQX;w  
if (a < b) { 4 moVS1  
data[k] = temp[i++]; 3.D|xE]g  
a = temp; l~$Od jf  
} else { oU)HxV  
data[k] = temp[j--]; g?e-D.pSF  
b = temp[j]; <j^"=UN4#  
} k4BiH5\hA  
} W=?s-*F[~  
} |3uE"\nfA  
Yc~c(1VRz  
/** H^0`YQJ3  
* @param data 82~ZPZG  
* @param l mx")cGGQ  
* @param i `yWWX.`  
*/ f*GdHUZ*  
private void insertSort(int[] data, int start, int len) { etLA F  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =U<6TP]{  
} \:d|'r8OCM  
} * 57y.](w  
} {-kV~p  
} +}@6V4BRn  
2_#V w&v  
堆排序: h]#bPb  
]WP[hF  
package org.rut.util.algorithm.support; E/N*n!sV  
/Jw 65 e  
import org.rut.util.algorithm.SortUtil; 3~z4#8=  
lhw]?\  
/** >ygyPl ;1s  
* @author treeroot ]W7(}~m  
* @since 2006-2-2 Y]/(R"-2G  
* @version 1.0 IMIZ#/  
*/ F's($n  
public class HeapSort implements SortUtil.Sort{ /=w9bUj5v  
5!$m3j_,]?  
/* (non-Javadoc) )f-ux5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _QbLg"O  
*/ ;>QED  
public void sort(int[] data) { <h^'x7PkW5  
MaxHeap h=new MaxHeap(); 1@q~(1-o  
h.init(data); 9r-]@6;  
for(int i=0;i h.remove(); py`RH )  
System.arraycopy(h.queue,1,data,0,data.length); ePdM9%  
} eZ5UR014  
xx0s`5  
private static class MaxHeap{ Vo}3E]  
'\\dh  
void init(int[] data){ 'bGL@H  
this.queue=new int[data.length+1]; Ug_5INK  
for(int i=0;i queue[++size]=data; !-b4@=f:  
fixUp(size); mt3j- Mw  
} La48M'u  
} K&0op 4&  
|!{Q4<  
private int size=0; 5%"${ywI  
/tl/%:U*.  
private int[] queue; s, m+q)  
G,M &z>ub0  
public int get() { e `zEsLs@  
return queue[1]; 5QB] 2c^  
} O=LS~&=,  
x?Z)q4  
public void remove() {  G7 >  
SortUtil.swap(queue,1,size--); !Rk1q&U5  
fixDown(1); _=E))Kp{z  
} g \)+ LX  
file://fixdown 2K<rK(  
private void fixDown(int k) { Cj%SW <v|  
int j; W/ZmG]sZE  
while ((j = k << 1) <= size) { Be}e%Rk  
if (j < size %26amp;%26amp; queue[j] j++; B!GpD@U  
if (queue[k]>queue[j]) file://不用交换 v1<gNb)`  
break; Y(GH/jw  
SortUtil.swap(queue,j,k); 4O_z|K_k|  
k = j; @3KVYv,q  
} E0[!jZ:c  
} ;tTM3W-h  
private void fixUp(int k) { B04%4N.g"X  
while (k > 1) { UgDai?b1  
int j = k >> 1; jUtrFl  
if (queue[j]>queue[k]) 9 \i;zpN\  
break; TEz)d=  
SortUtil.swap(queue,j,k); c nvxTI<  
k = j; ^tX+<X  
} n4\6\0jq6  
} " ] 0ER  
xal,j*  
} {`QF(WL  
#<f}.P.Uc  
} Yf.H$L  
MuB8gSu  
SortUtil: vLn<=.  
;wND?:  
package org.rut.util.algorithm; 0h!2--Aur  
S+>&O3m  
import org.rut.util.algorithm.support.BubbleSort; MK9?81xd  
import org.rut.util.algorithm.support.HeapSort; g`)3m,\  
import org.rut.util.algorithm.support.ImprovedMergeSort; qY\zZ  
import org.rut.util.algorithm.support.ImprovedQuickSort; g0I<Fan  
import org.rut.util.algorithm.support.InsertSort; &N1C"Eov?  
import org.rut.util.algorithm.support.MergeSort; B[ae<V0 k  
import org.rut.util.algorithm.support.QuickSort; ONJW*!(  
import org.rut.util.algorithm.support.SelectionSort; ,{ CgOz+Ul  
import org.rut.util.algorithm.support.ShellSort; b0X*+q   
mXlXB#N  
/** @iB**zR/  
* @author treeroot 4LARqSmt  
* @since 2006-2-2 V\ch0i 1  
* @version 1.0 ^!k^=ST1J  
*/ Y>t*L#i  
public class SortUtil { K4SR`Q  
public final static int INSERT = 1; RBr  
public final static int BUBBLE = 2; U#G uB&V  
public final static int SELECTION = 3; acB,u&  
public final static int SHELL = 4; OzBo *X/p  
public final static int QUICK = 5; <kn#`w1U'  
public final static int IMPROVED_QUICK = 6; WzgzI/  
public final static int MERGE = 7; JiZ9ly( G  
public final static int IMPROVED_MERGE = 8; (HLy;^#R  
public final static int HEAP = 9; ;w4rwL  
OTtSMO  
public static void sort(int[] data) { iJ42` 51  
sort(data, IMPROVED_QUICK); hw_7N)}  
} >IfJ.g"  
private static String[] name={ Wr`=P,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ':[+UUC@  
}; [#j|TBMHM  
,!kyrk6  
private static Sort[] impl=new Sort[]{ 9L%&4V}BIS  
new InsertSort(), 5g F}7D@  
new BubbleSort(), kSU*d/}*u  
new SelectionSort(), z-[Jbjhd  
new ShellSort(), aEXV^5;,pJ  
new QuickSort(), DetBZ.  
new ImprovedQuickSort(), Y+upZ@Ga  
new MergeSort(), wVE"nN#  
new ImprovedMergeSort(), "$0f.FO:i  
new HeapSort() a6WE,4T9  
}; rC_K L  
=6  
public static String toString(int algorithm){ _?kf9.  
return name[algorithm-1]; \nkqp   
} ZI}m~7  
2:pq|eiF  
public static void sort(int[] data, int algorithm) { b@1QE  
impl[algorithm-1].sort(data); 2#/ KS^  
} uO[4 WZ  
]qVJ>  
public static interface Sort { = 1}-]ctVn  
public void sort(int[] data); 5R"b1  
} W:rzfO.`Z  
3M1(an\nW  
public static void swap(int[] data, int i, int j) { Pv1psKu  
int temp = data; {B\.8)&8  
data = data[j]; lq.0?(  
data[j] = temp; Fof_xv9  
} \re.KB#R  
} @ K@~4!  
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