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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。 )kEH}P&  
插入排序: &~:+2  
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package org.rut.util.algorithm.support; wvmcD%   
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import org.rut.util.algorithm.SortUtil; = N^Ec[u(l  
/** g(C/J9J  
* @author treeroot `96MXP  
* @since 2006-2-2 ws<p BC,m  
* @version 1.0 }g& KT!r  
*/ N~ajrv}kd  
public class InsertSort implements SortUtil.Sort{ <+UJgB A-  
mwutv8?  
/* (non-Javadoc) $ {e5Ka  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !l5@L\   
*/ i9Eh1A3Y  
public void sort(int[] data) { ojyP.R  
int temp; /r8sL)D+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >Cam6LJ  
} G- |  
} z.|[g$F  
} 22*~CIh~x  
T 0qM "  
} fWf't2H&  
E#Ol{6  
冒泡排序: Y$#6%`*#>n  
O^q~dda  
package org.rut.util.algorithm.support; T*g}^TEh  
$Wjx$fD  
import org.rut.util.algorithm.SortUtil; $rJgBN   
k7& cc|y  
/** ]Ot=At  
* @author treeroot N_G84wxx  
* @since 2006-2-2 a)L|kux;l  
* @version 1.0 F2{SC?U  
*/ VUOe7c=  
public class BubbleSort implements SortUtil.Sort{ R?y_tho4A  
`dWnu3r;  
/* (non-Javadoc) ,4=mlte"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $wyPGok  
*/ BY9Z}/{j  
public void sort(int[] data) { x|gYxZ  
int temp; %{Obh j;c  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]E)D})r`#  
if(data[j] SortUtil.swap(data,j,j-1); HA0F'k  
} ?mF:L"i  
} }=JS d@`_  
} ArScJ\/Nwv  
} 4 9HP2E  
J*_^~t  
} VrWQ]L  
Hy -)yR  
选择排序: mwMu1#  
HXX9D&c4R  
package org.rut.util.algorithm.support; DMTc{  
,tDLpnB@;  
import org.rut.util.algorithm.SortUtil; Z78i7k}  
hL&7D @  
/** (zxL!ZR<  
* @author treeroot XfflD9M  
* @since 2006-2-2 -8vGvI>  
* @version 1.0 @$Yk#N;&(  
*/ LK!sk5/  
public class SelectionSort implements SortUtil.Sort { l8:!{I?s=  
0!RP7Sx  
/* mY[*Cj3WJ  
* (non-Javadoc) O3)B]!xL  
* }@/Ox  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f,|;eF-Z  
*/ l>L?T#v!_  
public void sort(int[] data) { `z.sWF|f!O  
int temp; -m[ tYp,q  
for (int i = 0; i < data.length; i++) { kM@e_YtpY  
int lowIndex = i; Z [l+{  
for (int j = data.length - 1; j > i; j--) { Ui-Y `  
if (data[j] < data[lowIndex]) { [z"oi'"fQ  
lowIndex = j; p!)PbSw#  
} Pa#Jwo  
} 9UV}`UM3V  
SortUtil.swap(data,i,lowIndex); 1 <m.Q*  
} r_FI5f  
} j?T>S]xOX  
|'uBkL0q  
}  j=G  
tk:nth  
Shell排序: O_GHvLO=  
|`kk mq  
package org.rut.util.algorithm.support; =v!Z8zk=W  
wDSwcNS  
import org.rut.util.algorithm.SortUtil; :7X{s4AU6  
mey -Bn  
/** N)a5~<fBG  
* @author treeroot $P)-o?eer  
* @since 2006-2-2 U%Hcc k'  
* @version 1.0 PMX'vA`  
*/ :8hXkQ  
public class ShellSort implements SortUtil.Sort{ .wTb/x  
>WJQxL4  
/* (non-Javadoc) Os]. IL$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I2NMn5>  
*/ a+CJJ3T-  
public void sort(int[] data) { rf 60'   
for(int i=data.length/2;i>2;i/=2){ F9tWJJUsr  
for(int j=0;j insertSort(data,j,i); S$P=;#r  
} (lq%4h  
} 0r[a$p>`  
insertSort(data,0,1); X+ybgB4(  
} +afkpvj8  
k8SY=HP  
/** <VQ@I  
* @param data FPZ@6  
* @param j C43I(.2g  
* @param i q$s)(D  
*/ \{Je!#  
private void insertSort(int[] data, int start, int inc) { Jy[rA<x$  
int temp; KV'3\`v@LY  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "jq6FT)O  
} %,@e- &>  
} /}%C'  
} Y{@foIZ  
Cv&>:k0V  
} VP?Q$?a  
}N,v&  B  
快速排序: $RHw6*COG  
Gg:W%&#  
package org.rut.util.algorithm.support; P.=Dd"La  
W>,D$  
import org.rut.util.algorithm.SortUtil; |TJu|zv^  
=+<DNW@%  
/** jd "YaZOQ  
* @author treeroot ]D^; Ca  
* @since 2006-2-2 <~svy)Cz  
* @version 1.0 DGz}d,ie  
*/ ;qUd]c9oi  
public class QuickSort implements SortUtil.Sort{ &`-e; Xt  
3.=o}!  
/* (non-Javadoc) :Fh_Ya0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O-~cj7 0\  
*/ - s{&_]A~  
public void sort(int[] data) { 6pZ/C<Y|W  
quickSort(data,0,data.length-1); O\@0o|NM  
} z_y@4B6>}  
private void quickSort(int[] data,int i,int j){ THy   
int pivotIndex=(i+j)/2; iRv \:.aQ.  
file://swap bZ+H u~  
SortUtil.swap(data,pivotIndex,j); 9IacZ  
'X_%m~}N  
int k=partition(data,i-1,j,data[j]); 8lCo\T5"  
SortUtil.swap(data,k,j); Ro2!$[P  
if((k-i)>1) quickSort(data,i,k-1); `{}DLaD9  
if((j-k)>1) quickSort(data,k+1,j); !Pd)  
@ "C P@^  
} g\aq#QV  
/** )S@TYzdAN  
* @param data A{DE7gp!  
* @param i ),-MrL8c%  
* @param j HLq2a vs\  
* @return ^c){N-G  
*/ VlxHZ  
private int partition(int[] data, int l, int r,int pivot) { _o>?\:A  
do{ U-q:Y-h  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Wr4Ob*2iD  
SortUtil.swap(data,l,r); #/hXcF  
}  '^,|8A2  
while(l SortUtil.swap(data,l,r);  ` EVy  
return l; iR'Pc3   
} ^F|/\i   
{9nH#yv  
} su~J:~q  
>WY\P4)k  
改进后的快速排序: h)X"<a++N  
H4ancmy  
package org.rut.util.algorithm.support; K|rG&#1J  
;n/04z  
import org.rut.util.algorithm.SortUtil; s{0c.M  
5VE9DTE  
/** 9XN/ w p  
* @author treeroot L#u!T)!zW  
* @since 2006-2-2 OH`|aqN  
* @version 1.0 5?Rzyfwk|  
*/ ()(/9t  
public class ImprovedQuickSort implements SortUtil.Sort { h09fU5l  
B>e},!  
private static int MAX_STACK_SIZE=4096; "pQ) 5/e  
private static int THRESHOLD=10; C\1x3  
/* (non-Javadoc) W7q!F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DG 6W ^  
*/ *|3G"B{w6  
public void sort(int[] data) { Z!oq2,ia  
int[] stack=new int[MAX_STACK_SIZE]; x:`"tJa  
h@D!/PS  
int top=-1; ac/<N%  
int pivot; [?Vk wFD0  
int pivotIndex,l,r; |j!U/n.%w  
 *#sY-Gd  
stack[++top]=0; Kbqx)E$iL  
stack[++top]=data.length-1; k'-5&Q  
)L$)qfQ~x  
while(top>0){ #;s5=aH  
int j=stack[top--]; hta y-  
int i=stack[top--]; c7t .  
Cg];UB}k  
pivotIndex=(i+j)/2; nT/Az g  
pivot=data[pivotIndex]; 78FLy7  
M I R))j;  
SortUtil.swap(data,pivotIndex,j); UR DXyAt  
w8(z\G_0  
file://partition E)Cdw%}^  
l=i-1; [D<"qT^*z6  
r=j; ?9:~d#p  
do{ 2D ' $  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3 UG UZ  
SortUtil.swap(data,l,r); e c4vX  
} .v_-V?7  
while(l SortUtil.swap(data,l,r); 0yBiio  
SortUtil.swap(data,l,j); }"6 PM)s  
+YCKd3/  
if((l-i)>THRESHOLD){ yFjjpEpnFt  
stack[++top]=i; "D7wtpJ  
stack[++top]=l-1; 50NLguE  
} i5Dq'wp  
if((j-l)>THRESHOLD){ ]O+W+h{]  
stack[++top]=l+1; EOzw&M];r  
stack[++top]=j; 2#xz,RM.  
} xA]}/*  
O <"\G!y~  
} N:&EFfg3  
file://new InsertSort().sort(data); >\ x!a:}  
insertSort(data); a0 8Wt  
} \jHIjFwQ  
/** w ;xbQZ|+  
* @param data m53~Ysq<  
*/ d9.~W5^fC  
private void insertSort(int[] data) { m-MfFEZ  
int temp; "aJf W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q;0 g  
} 3\0,>L9ET@  
} @XN|R  
} D;+sStZK3  
+$ 0wBU  
} 4LkW`Sbm  
zL/r V<  
归并排序: (Kb_/  
ECr}7R%  
package org.rut.util.algorithm.support; xpB* > zb  
Wr;9Mz&{  
import org.rut.util.algorithm.SortUtil; -5d^n\CDK  
J @^Ypq  
/** tu5T^"B qO  
* @author treeroot 0^ >b=a  
* @since 2006-2-2 Ula h!s  
* @version 1.0 *8I &|)x  
*/ 8Ao pI3  
public class MergeSort implements SortUtil.Sort{ W|AK"vf  
GVld]ioycG  
/* (non-Javadoc) agp7zw=N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EdC/]  
*/  } @4by<  
public void sort(int[] data) { TWSx9ii!M:  
int[] temp=new int[data.length]; JbLHW26pl  
mergeSort(data,temp,0,data.length-1); i.0.oy>  
} ['Y"6[1  
kKz>]t"A  
private void mergeSort(int[] data,int[] temp,int l,int r){ VhLS*YiSY  
int mid=(l+r)/2; >h{)7Hv  
if(l==r) return ; }}gtz-w  
mergeSort(data,temp,l,mid); e^yfoE<7  
mergeSort(data,temp,mid+1,r); Tga%-xr+  
for(int i=l;i<=r;i++){ cN%@ nW0i  
temp=data; KK, t!a  
} _o'a|=Osx>  
int i1=l; g1&>.V}!  
int i2=mid+1; pmgPBiU>  
for(int cur=l;cur<=r;cur++){ ~UQX t r  
if(i1==mid+1) a9g~(#?a  
data[cur]=temp[i2++]; *1g3,NMA  
else if(i2>r) xzz0uk5  
data[cur]=temp[i1++]; XS=f>e1<W  
else if(temp[i1] data[cur]=temp[i1++]; }0AoV&75  
else @|EWif|  
data[cur]=temp[i2++]; ^"] ]rZ)  
} yyM`J7]J  
} DLD5>  
!Wz4BBU8o  
} ErxvGB(2  
 EHk$,bM  
改进后的归并排序: _@OS,A  
KtD XB>  
package org.rut.util.algorithm.support; Hb3t|<z  
__|Y59J%  
import org.rut.util.algorithm.SortUtil; bkFO4OZd  
N^f_hL|:9  
/** r-$VPW  
* @author treeroot q0L\{  
* @since 2006-2-2 *> E_lWW.  
* @version 1.0 {h0T_8L/  
*/ d9q`IZqee  
public class ImprovedMergeSort implements SortUtil.Sort { !nL>Ly  
pch8A0JAl)  
private static final int THRESHOLD = 10; !p!^[/9"c  
rUh2[z8:  
/* @K\ hgaQ  
* (non-Javadoc) W<>R;~)  
* W0XfU`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W5Vh+'3  
*/ (/KeGgkhv  
public void sort(int[] data) { jbWgL$  
int[] temp=new int[data.length]; HsKq/Oyk  
mergeSort(data,temp,0,data.length-1); "xAIK  
} \hI|I!sDWy  
|J$ Bj?  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?D;7ut$~  
int i, j, k; I(>j"H)cAF  
int mid = (l + r) / 2; m ;yIFO  
if (l == r) 3v ~[kVhoG  
return; .S[M: <<*  
if ((mid - l) >= THRESHOLD) zE+^WeH|  
mergeSort(data, temp, l, mid); =rA]kGx  
else [@Mo3]#\  
insertSort(data, l, mid - l + 1); m>djoe  
if ((r - mid) > THRESHOLD) rlY n"3%  
mergeSort(data, temp, mid + 1, r); jEn 9T  
else $bl<mG%#9  
insertSort(data, mid + 1, r - mid); -+[~eqRB  
lC@wCgc  
for (i = l; i <= mid; i++) { `*3;sq%`  
temp = data; x27$h)R0v  
} ;$3e pP  
for (j = 1; j <= r - mid; j++) { T_[  
temp[r - j + 1] = data[j + mid]; NZz^*Ela  
} Yf_/c*t\5  
int a = temp[l]; -J>f,zA  
int b = temp[r]; ~d-Q3n?zR  
for (i = l, j = r, k = l; k <= r; k++) { + cZC$lo  
if (a < b) { kgd dq  
data[k] = temp[i++]; B]I*ymc#  
a = temp; {t|Q9&  
} else { =!u]t &yv  
data[k] = temp[j--]; gts09{"}Y  
b = temp[j]; hISYtNWjd"  
} |E &|6h1  
} v%7Gh -P  
} W@RD bsc  
Z-3("%_$/  
/** +V;d^&S  
* @param data dF7`V J2  
* @param l W&HxMi  
* @param i (_AU)  
*/ T?CQgVR  
private void insertSort(int[] data, int start, int len) { +wfZFJ:1l  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A<IV"bo  
} +mN8uU~(kx  
} 9Zr6 KA{  
} ;H9 W:_ahE  
} |Xmzq X%  
-Gjz+cRns  
堆排序: 4kR;K !@k  
Q)\[wYMt  
package org.rut.util.algorithm.support; h{ZK;(u$  
r,q.RWuII  
import org.rut.util.algorithm.SortUtil; %4})_h?j  
KQ0f2?  
/** udPLWrPF\  
* @author treeroot pm2]  
* @since 2006-2-2 f8-~&N/_R  
* @version 1.0 ,6ae='=d  
*/ Fb ~h{  
public class HeapSort implements SortUtil.Sort{ 9{0%M  
c3WF!~1r  
/* (non-Javadoc) vhzz(UPUt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WBR# Ux  
*/ G=l:v  
public void sort(int[] data) { xl Q]"sm1  
MaxHeap h=new MaxHeap(); SNf~%B?`L  
h.init(data); &yI>A1  
for(int i=0;i h.remove(); Oj8D+sC{  
System.arraycopy(h.queue,1,data,0,data.length); $`P]%I}  
} 3Xy~ap>Y  
r@PVSH/  
private static class MaxHeap{ ?;A\>sP  
GK1P7Qy?V  
void init(int[] data){ =i6k[rg  
this.queue=new int[data.length+1]; Ym6v4k!@O  
for(int i=0;i queue[++size]=data; _ Td#C1g3  
fixUp(size); pcQgWjfS  
} ?Zb3M  
} T8^l}Y B  
ErFt5%FN.O  
private int size=0; I8|"h8\  
> w SI0N  
private int[] queue; MRT<hB  
]Bs{9=2  
public int get() { FGeKhA 8jT  
return queue[1]; aGAr24]y  
} r.c:QY$  
di7cCn  
public void remove() { kOC0d,  
SortUtil.swap(queue,1,size--); -j1]H"-  
fixDown(1); *?A!`JpJn  
} nZM]EWn  
file://fixdown eI%k xqc  
private void fixDown(int k) { &q M8)2Y  
int j; (M{>9rk8  
while ((j = k << 1) <= size) { . BX*C  
if (j < size %26amp;%26amp; queue[j] j++; =E-o@#BS  
if (queue[k]>queue[j]) file://不用交换 O\6gw$  
break; 5BK3ix*L  
SortUtil.swap(queue,j,k); Cxe(iwa.  
k = j; 1$^r@rP  
} /FjdcH=  
} <9c{Kt.5(  
private void fixUp(int k) { wk'&n^_br  
while (k > 1) { d. ZfK  
int j = k >> 1; L-zU%`1{M  
if (queue[j]>queue[k]) 7Sh1QDYZ  
break; tKds|0,j|  
SortUtil.swap(queue,j,k); CWJN{  
k = j; y qK*E*  
} (W}DMcuSd  
} /SyAjZ  
G<]@nP{P  
} 74&{GCL  
"'/+}xM"5  
} ;P$ _:-C  
qn'TIE.  
SortUtil: &VcO,7 A|  
K /%5\h  
package org.rut.util.algorithm; b$- g"F  
b5ul|p  
import org.rut.util.algorithm.support.BubbleSort; J*m7 d4^  
import org.rut.util.algorithm.support.HeapSort; igEqty!.  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0uIBaW3s  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?mN!9/DIc  
import org.rut.util.algorithm.support.InsertSort; yo%Nz"  
import org.rut.util.algorithm.support.MergeSort; `?f<hIJoz  
import org.rut.util.algorithm.support.QuickSort; M1T.  
import org.rut.util.algorithm.support.SelectionSort; %a:T9v  
import org.rut.util.algorithm.support.ShellSort; @VyNe(U  
l}k'ZX4  
/** Z,"YMUl'  
* @author treeroot F? ps? e  
* @since 2006-2-2 2fNNdxdbT  
* @version 1.0 "xn,'`a  
*/ I3}]MAE  
public class SortUtil { B\qy:nr j  
public final static int INSERT = 1; >/NegJh'F}  
public final static int BUBBLE = 2; .~TI%&#  
public final static int SELECTION = 3; KC%&or  
public final static int SHELL = 4; CrG!8}  
public final static int QUICK = 5; J25/Iy*byG  
public final static int IMPROVED_QUICK = 6; *pABdP+  
public final static int MERGE = 7; }J2f$l>R  
public final static int IMPROVED_MERGE = 8; zMM ~4?4  
public final static int HEAP = 9; "KSdC8MS  
[nlq(DGJhp  
public static void sort(int[] data) { K<%8.mZ7  
sort(data, IMPROVED_QUICK); p["pGsf  
} xMa9o  
private static String[] name={ .F[5{XV  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t:v>W8N53  
}; 2izBB,# "  
M@p<L VP  
private static Sort[] impl=new Sort[]{ <q Q@OUI   
new InsertSort(), E>O@Bv  
new BubbleSort(), de[NIDA;`  
new SelectionSort(), +_QcLuV,  
new ShellSort(), XQmg^x[,A  
new QuickSort(), .[s6PzQy  
new ImprovedQuickSort(), J HV  
new MergeSort(), Q'?VLv |@  
new ImprovedMergeSort(), $ f||!g  
new HeapSort() -KfMK N~  
}; woF {O)~X  
)J2UNIgN  
public static String toString(int algorithm){ ~=<uYv?0s  
return name[algorithm-1]; " RIt  
} !lA~;F  
*y$CDv  
public static void sort(int[] data, int algorithm) { %b~ND?nn-  
impl[algorithm-1].sort(data); /zr)9LQY0  
} _a_T`fE&de  
NLUO{'uUW  
public static interface Sort { t**d{P+  
public void sort(int[] data); m9 ]Ge]  
} B|{E[]iK  
VW;E14  
public static void swap(int[] data, int i, int j) { @W~aoq6  
int temp = data; "9N;&^ I  
data = data[j]; gA3f@7}d  
data[j] = temp; V 'fri/Z  
} 8Z)wot  
} ?crK613 t  
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