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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。 4ETHaIiWp  
插入排序: #<X4RJ  
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package org.rut.util.algorithm.support; O(VWJ@EHn  
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import org.rut.util.algorithm.SortUtil; 4>OS2b`.;  
/** /:ZwGyT;  
* @author treeroot (:F]@vT  
* @since 2006-2-2 &xA>(|a\&-  
* @version 1.0 vxOnv8(  
*/ (E7"GJ  
public class InsertSort implements SortUtil.Sort{ ]_|'N7J  
EIfqRRTA  
/* (non-Javadoc) ]#W7-Q;]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H4sW%nZ0  
*/ m(o`;  
public void sort(int[] data) {  ;u [:J  
int temp; #!E`%' s]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nCQ".G  
} E 0/>E  
} #-PMREgO  
} |?ZU8I^vW  
mln4Vl(l2M  
} WrcmC$ff  
 + K`.ck  
冒泡排序: RyU8{-q  
5*+DN U@  
package org.rut.util.algorithm.support; q*5L",  
7VG*Wu  
import org.rut.util.algorithm.SortUtil; -agB ]j  
hW'b'x<  
/**  v\CBw"  
* @author treeroot A FBH(ms't  
* @since 2006-2-2 P3-O)m]jv  
* @version 1.0 mZc;n.$U  
*/ _|W&tB *  
public class BubbleSort implements SortUtil.Sort{ $${3I4  
dQ~GE}[  
/* (non-Javadoc) 'wtb"0 }  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K F_Uu  
*/ x;`G n_  
public void sort(int[] data) { )+|wrK:*v  
int temp; =+b>d\7xG  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S>r}3,]S  
if(data[j] SortUtil.swap(data,j,j-1); (X-( WMsqQ  
} ]f?r@U'AS|  
} ;Z`a[\i':  
} jMCd`Q]K  
} _'1 7C /  
lZ)6d-vK  
} F_g(}wE# q  
]n>9(Mp!M  
选择排序: s,f2[6\Y  
2wnk~URj  
package org.rut.util.algorithm.support; ,9}JPv4Z  
a'/C)fplL  
import org.rut.util.algorithm.SortUtil; Fx}v.A5  
i7PS=]TK\  
/** 'jMs&  
* @author treeroot (9ZW^flY  
* @since 2006-2-2 G_5{5Ar  
* @version 1.0 Y0kcxpK/  
*/ kr|r-N`  
public class SelectionSort implements SortUtil.Sort { (T$cw(!  
8(l0\R,%+z  
/* 5'+g[eNyBV  
* (non-Javadoc) }No#_{  
* y9]7LETv\M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8{!|` b'f  
*/ {D^ )% {  
public void sort(int[] data) { ULu@"  
int temp; ,/GFD[SQ  
for (int i = 0; i < data.length; i++) { 5Za<]qxr  
int lowIndex = i; >yLDU_P)  
for (int j = data.length - 1; j > i; j--) { rir,|y,  
if (data[j] < data[lowIndex]) { =OtW!vx#R.  
lowIndex = j; d*e8P ep  
} ;di .U,  
} Ws1|idAT  
SortUtil.swap(data,i,lowIndex); t( V 2  
} %'h:G Bkd  
} H.]V-|U  
T^vo9~N*  
} E;4B!"Q8  
{d'B._#i  
Shell排序: ?lgE9I]  
r>|S4O  
package org.rut.util.algorithm.support; D</?|;J#/  
H7P}=YW".  
import org.rut.util.algorithm.SortUtil; )quQI)Ym  
@ U"Ib  
/** : UH*Wft1  
* @author treeroot m <z?6VC  
* @since 2006-2-2 U&:-Vf~&  
* @version 1.0 ;`c:Law4  
*/ qi7*Jjk>90  
public class ShellSort implements SortUtil.Sort{ ewN|">WXQ  
Yc-5Mr8*,  
/* (non-Javadoc) E&z^E2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FZ<6kk4  
*/ Iurz?dt4w  
public void sort(int[] data) { BR?DW~7J j  
for(int i=data.length/2;i>2;i/=2){ v(JjvN21  
for(int j=0;j insertSort(data,j,i); *y|w9 r p  
} 2?Ryk`2i)  
} U?|A3;,xh  
insertSort(data,0,1); !BrZTo  
} ;nbEV2Y<  
e@vZg8Ie  
/** g#l!b%$  
* @param data uEr.LCAS  
* @param j R\n@q_!`X  
* @param i  PBW_9&d  
*/ CE  
private void insertSort(int[] data, int start, int inc) { muF&t'k  
int temp; :jkPV%!~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fj( WH L  
} @ YWuWF  
} C" `\[F`.k  
} 7^Us  
q[vO mes  
} S/y(1.wh  
FMn|cO.vEP  
快速排序: d^$cx(2$D  
hUp3$4w  
package org.rut.util.algorithm.support; rVsCJuxI  
+/n]9l]#h  
import org.rut.util.algorithm.SortUtil; $^ir3f+  
KYKF$@ <G  
/** ]v@ng8  
* @author treeroot qkc,93B3  
* @since 2006-2-2 I Gb'ii=A  
* @version 1.0 %jq R^F:J  
*/ ho~WD'i  
public class QuickSort implements SortUtil.Sort{ L{&1w  
gMq;  
/* (non-Javadoc) =? q&/ cru  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I|Hcs.uW  
*/ d/*EuJYin<  
public void sort(int[] data) { {[NQD3=+F  
quickSort(data,0,data.length-1); )PU\|I0|)e  
} s/E9$*0  
private void quickSort(int[] data,int i,int j){ 6rG7/  
int pivotIndex=(i+j)/2; U:MZN[Cc[  
file://swap Ue,eEer  
SortUtil.swap(data,pivotIndex,j); 23p.g5hJi  
5HL>2 e[  
int k=partition(data,i-1,j,data[j]); a04S&ezj  
SortUtil.swap(data,k,j); jamai8  
if((k-i)>1) quickSort(data,i,k-1);  }l]r-  
if((j-k)>1) quickSort(data,k+1,j); HP3%CB  
>[T6/#M  
} }c4F}Cy  
/** uF|[MWcy0#  
* @param data +U<Ae^V  
* @param i n],cs  
* @param j 4T&Jlu?:  
* @return p{r{}iYI  
*/ aa!1w93?i  
private int partition(int[] data, int l, int r,int pivot) { b^8"EBo  
do{ _Bn8i(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +&_n[;   
SortUtil.swap(data,l,r); _ J"J[$  
} biffBC:q  
while(l SortUtil.swap(data,l,r); \4 t;{_  
return l; JL:B4 f%}B  
} yFFNzw{  
95D(0qv  
} x5U;i  
,(c'h:@M  
改进后的快速排序: #&{)`+!"  
u6\W"LW  
package org.rut.util.algorithm.support; \vj xCkg{  
s\3ZE11L  
import org.rut.util.algorithm.SortUtil; P8CIKoKCV  
<_bGV  
/** =*y{y)B^g  
* @author treeroot !a5e{QG0  
* @since 2006-2-2 }_Sgor83n  
* @version 1.0 i~HS"n  
*/ mUb2U&6(  
public class ImprovedQuickSort implements SortUtil.Sort { [vdC$9z,  
q>#P|  
private static int MAX_STACK_SIZE=4096; D{[i_K  
private static int THRESHOLD=10; Pc~)4>X<  
/* (non-Javadoc) _@|_`5W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1&kf2\S  
*/ )=,;-&AR  
public void sort(int[] data) { 6X VJ/qZ  
int[] stack=new int[MAX_STACK_SIZE]; u`*$EP-%  
><6g-+*k  
int top=-1; 1b!5h  
int pivot; Y3hudjhLl  
int pivotIndex,l,r; *nUa0Zg4q6  
jN7Z} 1`  
stack[++top]=0; R ta_\Aj!  
stack[++top]=data.length-1; 9'p pb  
IifH=%2Y  
while(top>0){ xU9^8,6  
int j=stack[top--]; _j_c&  
int i=stack[top--]; :Sk<0VVd7  
3_ =:^Z  
pivotIndex=(i+j)/2; +n8,=}  
pivot=data[pivotIndex]; O}Do4>02  
KR4RIJZ_t  
SortUtil.swap(data,pivotIndex,j); 9>5]y}.{  
E|B1h!!\c  
file://partition {y:+rh&  
l=i-1; )jRaQ~Sm  
r=j; q]*:RI?wGT  
do{ f6HDfJmE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !un_JZD  
SortUtil.swap(data,l,r); pQ+4++7ID  
} j%*<W> O  
while(l SortUtil.swap(data,l,r); +(hr5  
SortUtil.swap(data,l,j); P$;_YLr  
vnz}Pr! c  
if((l-i)>THRESHOLD){ 'cbD;+YH  
stack[++top]=i; 9n".Q-V;k  
stack[++top]=l-1; ;|K(6)  
} 3+%L[fW`/  
if((j-l)>THRESHOLD){ rMUQh~a/  
stack[++top]=l+1; Wuji'sxTs  
stack[++top]=j; MXpj_+@  
} m=I A/HOR^  
\RTXfe-`  
} W;wu2'  
file://new InsertSort().sort(data); nHL(v  
insertSort(data); zd [cp@  
} Le c%kC  
/** }EHmVPe  
* @param data DfP vi1  
*/ + f?xVW<h  
private void insertSort(int[] data) { gMZ?MG  
int temp; 4,R1}.?BzJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7Y'.yn  
} V|dKKb[Lve  
} D&&11Iz&  
} )8Sm}aC  
BhJ~jV"  
} <^jW  
*,__\/U98  
归并排序: ~ +z'pK~c  
I#hzU8Cc  
package org.rut.util.algorithm.support; ;tLu  
<?iwi[S  
import org.rut.util.algorithm.SortUtil; *YY:JLe  
-n$fh::^  
/** r`/tb^  
* @author treeroot xo_Es?  
* @since 2006-2-2 E%+1^ L  
* @version 1.0 l4Y}<j\;  
*/ =zW.~(c{  
public class MergeSort implements SortUtil.Sort{ PfVjfrI[  
o %tvwv  
/* (non-Javadoc) Ow]c,F}^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A@"CrVE  
*/ L pdp'9>I  
public void sort(int[] data) { /F 1mYq~  
int[] temp=new int[data.length]; }mw31=2bD  
mergeSort(data,temp,0,data.length-1); 3AD^B\<gB  
} n.Q?@\}2  
f8 M=P.jz  
private void mergeSort(int[] data,int[] temp,int l,int r){ l*yJU3PW  
int mid=(l+r)/2; s?*MZC  
if(l==r) return ; A5gdZZ'x  
mergeSort(data,temp,l,mid); C"ZCX6p+$  
mergeSort(data,temp,mid+1,r); eq\{*r"DCK  
for(int i=l;i<=r;i++){ O-vvFl#4  
temp=data; kST  
} R:v`\  
int i1=l; 1)M>vdrP  
int i2=mid+1; Ye_)~,{,p  
for(int cur=l;cur<=r;cur++){ %k3a34P@  
if(i1==mid+1) qN_jsJ  
data[cur]=temp[i2++]; hU `H\LE  
else if(i2>r) %8+'L4  
data[cur]=temp[i1++]; +x0-hRD  
else if(temp[i1] data[cur]=temp[i1++]; %+9Mr ami  
else 2FS,B\d  
data[cur]=temp[i2++]; ;wz YZ5=Di  
} l$Y7CIH  
} %-:6#b z  
D|n`9yv a  
} CtA0W\9w5a  
3u8HF-  
改进后的归并排序:  _D(F[p|  
iffRGnN^e  
package org.rut.util.algorithm.support; "ND 7,rQ  
t <#Yr%a  
import org.rut.util.algorithm.SortUtil; 8<uKzb(O:  
xFS`#1  
/** dYJW`Q;j.|  
* @author treeroot h7  >  
* @since 2006-2-2 p9 |r y+t  
* @version 1.0 Rj% q)aw'  
*/ }o? @  
public class ImprovedMergeSort implements SortUtil.Sort { t{K1ht$[:  
W6~B~L  
private static final int THRESHOLD = 10; [ua{qJ9  
]pr;ME<M{  
/* P$D1kcCw  
* (non-Javadoc) %c(':vI#  
* hun/H4f|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l23#"gGb  
*/ I "9S  
public void sort(int[] data) { !UlG! 820  
int[] temp=new int[data.length]; O- &>Dc  
mergeSort(data,temp,0,data.length-1); O&irgc!  
} %Ow,.+m  
ek#{!9-  
private void mergeSort(int[] data, int[] temp, int l, int r) { [>4Ou^=1  
int i, j, k; 1< ;<?  
int mid = (l + r) / 2; :NO'[iE  
if (l == r) dGcG7*EX  
return; }} l04kN_  
if ((mid - l) >= THRESHOLD) -pc*$oe  
mergeSort(data, temp, l, mid); BxO8oKe  
else i%0Ml:Y  
insertSort(data, l, mid - l + 1); y#^d8 }+  
if ((r - mid) > THRESHOLD) 4S@^ym  
mergeSort(data, temp, mid + 1, r); X%S?o  
else pNI=HHx  
insertSort(data, mid + 1, r - mid); pVP CxP  
{cKKTDN  
for (i = l; i <= mid; i++) { s&!g )  
temp = data; zD-.bHo>.  
} O%y.  
for (j = 1; j <= r - mid; j++) { $ T.c>13  
temp[r - j + 1] = data[j + mid]; V\WqA8  
} 6<R!`N 6  
int a = temp[l]; ]7-*1kL8=~  
int b = temp[r]; ^6|Q$]}Ok  
for (i = l, j = r, k = l; k <= r; k++) { =ex71qj)  
if (a < b) { NS;,(v{*N  
data[k] = temp[i++]; X[ }5hZcX  
a = temp; /e6\F7  
} else { O[;>Y'zqC%  
data[k] = temp[j--]; uJm9h(xq  
b = temp[j]; a}+|2k_  
} vVmoV0kGt  
} =zt@*o{F  
} )avli@W-3j  
InMF$pw  
/** +hRAU@RA  
* @param data *obBo6!zM  
* @param l TP[<u-@G  
* @param i ! iA0u  
*/ (5re'Pl  
private void insertSort(int[] data, int start, int len) { &hEtVkK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7g cr$&+e  
} JV Fn=Mw  
} B{lBUv(B  
} V,fSn:8%M  
} egxh  
sME3s-  
堆排序: U`D/~KJ{Y  
N)03{$WM  
package org.rut.util.algorithm.support; $uF} GP_)  
>Q#_<IcI  
import org.rut.util.algorithm.SortUtil; lzN\~5a}  
Mk7,:S  
/** 0p :FAvvNI  
* @author treeroot %vDN{%h8  
* @since 2006-2-2 { ,qm=Xjq  
* @version 1.0 n:,At] ky  
*/ D|@*HX@_Xp  
public class HeapSort implements SortUtil.Sort{ G< l+94(  
Jc"xH~,  
/* (non-Javadoc) N2vSJ\u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kqYWa`eE  
*/ BYFvf(>  
public void sort(int[] data) { 0 Ji>dr n  
MaxHeap h=new MaxHeap(); !v;N@C3C  
h.init(data); O{uc  h  
for(int i=0;i h.remove(); !jGe_xB}~  
System.arraycopy(h.queue,1,data,0,data.length); 1WRQjT=o  
} 'kf]l=i[n  
E4 GtJ`{X  
private static class MaxHeap{ Cb5;l~}L  
{M96jjiInf  
void init(int[] data){ /qa{*"2Qo  
this.queue=new int[data.length+1]; N?TXPY  
for(int i=0;i queue[++size]=data; `h}fS4CO  
fixUp(size); {b6| wQ\  
} z^j7wMQ  
} f]%:.N~1w  
ICA p  
private int size=0; U:"X *  
h|qTMwPr  
private int[] queue; R8|H*5T?+  
M#%l}  
public int get() { OSreS5bg  
return queue[1]; -5vg"|ia,  
} c\A 4-08  
* -uA\  
public void remove() { uH*moVw@5  
SortUtil.swap(queue,1,size--); $eHYy,,  
fixDown(1); }C-K0ba7  
} .n$c+{  
file://fixdown 4Z8FLA+T,  
private void fixDown(int k) { <O:}dXqZ  
int j; : EA-L  
while ((j = k << 1) <= size) { Z p8\n:  
if (j < size %26amp;%26amp; queue[j] j++; o%3i(H  
if (queue[k]>queue[j]) file://不用交换 >7g #e,d   
break; 'Ur1I "  
SortUtil.swap(queue,j,k); [$\KS_,Mn  
k = j; #+CH0Z  
} sg YPR  
} gOiZ8K!  
private void fixUp(int k) { ZHu"& &  
while (k > 1) { 3yGo{uW  
int j = k >> 1; 6%yt"XmT  
if (queue[j]>queue[k]) 75v7w  
break; DVJuX~'|!  
SortUtil.swap(queue,j,k); HSwC4y}  
k = j; "w 7{,HP  
} gXJtk;  
} K HyVI6N[  
,~Y[XazT  
} Cb4.N 8  
\/XU v(  
} %f)%FN . S  
B*Z}=$1j  
SortUtil: c r,fyAvX  
,FIG5-e,}  
package org.rut.util.algorithm; %-?k [DL6  
u.yYE,9  
import org.rut.util.algorithm.support.BubbleSort; _tlr8vL  
import org.rut.util.algorithm.support.HeapSort; 6~34L{u  
import org.rut.util.algorithm.support.ImprovedMergeSort; d+qeZGg^A  
import org.rut.util.algorithm.support.ImprovedQuickSort; Xsk/U++  
import org.rut.util.algorithm.support.InsertSort; `. i #3P  
import org.rut.util.algorithm.support.MergeSort; (N"9C+S}  
import org.rut.util.algorithm.support.QuickSort; 953GmNZ7  
import org.rut.util.algorithm.support.SelectionSort; HIGTo\]Z  
import org.rut.util.algorithm.support.ShellSort; Y{KN:|i.!  
v[~~q  
/** U8S<wf&  
* @author treeroot t $m:  
* @since 2006-2-2 `}:pUf  
* @version 1.0  "tT68  
*/ cqYMzS t  
public class SortUtil { ^O.` P  
public final static int INSERT = 1; 4Sz2 9\X  
public final static int BUBBLE = 2; 73j\!x  
public final static int SELECTION = 3; }!uwWBw`  
public final static int SHELL = 4; Gq=tR`.  
public final static int QUICK = 5; !L[$t~z  
public final static int IMPROVED_QUICK = 6; 8B?*?,n5  
public final static int MERGE = 7; cb=ixn  
public final static int IMPROVED_MERGE = 8; fJ  GwT  
public final static int HEAP = 9; /&N\#;kK?b  
5X PoQ^  
public static void sort(int[] data) { V= g u'~  
sort(data, IMPROVED_QUICK); (}RTHpD  
} lLur.f  
private static String[] name={ f4O}WU}l{s  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g-pEt#  
}; btOx\y}  
;fYJ]5>  
private static Sort[] impl=new Sort[]{ :jy}V'bn$  
new InsertSort(), BN&eU'Dl]  
new BubbleSort(), vs^)=  
new SelectionSort(), g#Z7ReMw  
new ShellSort(), =qvn?I^/  
new QuickSort(), <S^Hy&MD>  
new ImprovedQuickSort(), ux8K$$$  
new MergeSort(), Zd| u>tn  
new ImprovedMergeSort(), E]Q d5l  
new HeapSort() WN $KS"b6}  
}; V~_6t{L  
}#q0K  
public static String toString(int algorithm){ DzbcLg%:W  
return name[algorithm-1]; `z^50Vh|  
} hwQrmVwvP  
mGpBj9jr1  
public static void sort(int[] data, int algorithm) { s"`Oj5  
impl[algorithm-1].sort(data); # uy^AC$  
} _Tf %<E  
\#v(f2jPF  
public static interface Sort { *:% I|5  
public void sort(int[] data); Z,-J tl  
} UGxF}Q  
gj7'4 3 ?W  
public static void swap(int[] data, int i, int j) { VtzBYza  
int temp = data; tl 9`  
data = data[j]; #nQboTB@  
data[j] = temp; } rX)A\ g6  
} |['SiO$)  
}  Spw^h=o  
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