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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。 k3|Z7eW}[  
插入排序: + T+#q@  
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package org.rut.util.algorithm.support; \7_y%HR  
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import org.rut.util.algorithm.SortUtil; V[V[~;Py  
/** {..6>fS  
* @author treeroot Ul# r  
* @since 2006-2-2 N>E_%]Ch  
* @version 1.0 n+p }\msH  
*/ &&%H%9  
public class InsertSort implements SortUtil.Sort{ 9M ]_nPY  
{{1G`;|v 9  
/* (non-Javadoc) =MWHJ'3-/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }B^tL$k  
*/ b2*TgnRq  
public void sort(int[] data) { E`J@h l$N  
int temp; +,l-Nz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L50n8s  
} mZBo~(}  
} ig"L\ C"T  
} tX[WH\(xI  
l"]V6!-U  
} 1Ws9WU  
H*6W q  
冒泡排序: R-14=|7a-  
d=^z`nt !R  
package org.rut.util.algorithm.support; ~G w*r\\+  
3XKf!P  
import org.rut.util.algorithm.SortUtil; k{0o9,  
sq]F;=[5  
/** < Z$J<]I  
* @author treeroot 9u_Pj2%56.  
* @since 2006-2-2 8EY:t zw  
* @version 1.0 7:~_D7n  
*/ .]Z"C&"N]  
public class BubbleSort implements SortUtil.Sort{ T{'RV0%   
Ca-j?bb!  
/* (non-Javadoc) ! P4*+')M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2zpr~cB=  
*/ DwF hK*  
public void sort(int[] data) { @|!z9Y*  
int temp; Z:gyz$9w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7 [7"A  
if(data[j] SortUtil.swap(data,j,j-1); JS77M-Ac  
} 6C)_  
} 9 $X-  
} -qoH,4w  
} 8Y?;x}  
V8(-  
} pot~<d`:K"  
IA(5?7x`<  
选择排序: 7z-[f'EIUI  
^Dx&|UwiZa  
package org.rut.util.algorithm.support; M=Wz  
)e{}V\;q  
import org.rut.util.algorithm.SortUtil; QW"! (`K  
MQ4KdqgP  
/** 05[SC}MCA  
* @author treeroot %)wjR/o  
* @since 2006-2-2 EK'!}OGCG  
* @version 1.0 2pAW9R#UV-  
*/ v0y(58Rz.  
public class SelectionSort implements SortUtil.Sort { iQ{VY ^ 0  
PW4q~rc=:  
/* 0$njMnB2l  
* (non-Javadoc) SX*RP;vHy  
*  _4f;<FL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aDCwI:Li(  
*/ v>56~AJ  
public void sort(int[] data) { 8ipez/  
int temp; Debv4Gr;^  
for (int i = 0; i < data.length; i++) { $8FUfJ1@  
int lowIndex = i; snJ129}A  
for (int j = data.length - 1; j > i; j--) { 7o4\oRGV  
if (data[j] < data[lowIndex]) { &wX]_:?  
lowIndex = j; cnLro  
}  3CJwj  
} #/]nxW.S  
SortUtil.swap(data,i,lowIndex); ;Xw~D_uv  
} d'2A,B~_*  
} liSmjsk  
w>YDNOk  
} <uJ@:oWG7  
7 d vnupLh  
Shell排序: `x|?&Ytmf9  
)X!,3Ca{43  
package org.rut.util.algorithm.support; O@P"MXEG  
t^L]/$q  
import org.rut.util.algorithm.SortUtil; 5X+A"X ;C  
g+l CMW\  
/** 0aAoV0fMDz  
* @author treeroot 2?x4vI np;  
* @since 2006-2-2 BuwY3F\-O  
* @version 1.0 Lr<cMK<  
*/ U~8g_*  
public class ShellSort implements SortUtil.Sort{ `2snz1>!j  
fZ. ONq  
/* (non-Javadoc) *] (iS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l^qI, M  
*/ ~m |BC*)  
public void sort(int[] data) { nrb Ok4Dz  
for(int i=data.length/2;i>2;i/=2){ D]}G.v1  
for(int j=0;j insertSort(data,j,i); {8OCXus3m  
} M}Sv8D]I  
} AR=]=8  
insertSort(data,0,1); kP"9&R`E  
} ceV}WN19l  
#`IN`m|  
/** Vc2`b3"Br  
* @param data `9 L>*  
* @param j KSvE~h[#+  
* @param i Dj+f]~  
*/ 3Y &d=  
private void insertSort(int[] data, int start, int inc) { 1qch]1 ^G  
int temp; ,)XLq8  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _L PHPj^Pg  
} xwr8`?]y  
} "8RSvT<W^5  
} /\Ef%@  
9UkBwS`  
} }}[2SH'nH  
"#]$r  
快速排序: :0ep( <|;  
_^;Z~/.  
package org.rut.util.algorithm.support; : 'c&,oLY  
xmG<]WF>E  
import org.rut.util.algorithm.SortUtil; {FG j]*  
yLGRi^d#  
/** N$DkX)Z  
* @author treeroot "{n&~H`  
* @since 2006-2-2 H.c7Nle  
* @version 1.0 /mMV{[  
*/ K;(mC<  
public class QuickSort implements SortUtil.Sort{ O}P`P'Y|'  
OPi0~s  
/* (non-Javadoc) ~BF&rx5Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rv=YFo[B  
*/ Vj-h;rB0z  
public void sort(int[] data) { Th%zn2R B  
quickSort(data,0,data.length-1); <[phnU^ 8  
} sS Mh`4'  
private void quickSort(int[] data,int i,int j){ (ZGbh MK  
int pivotIndex=(i+j)/2; %RVZD#zr  
file://swap IcEdG(  
SortUtil.swap(data,pivotIndex,j); JVJMgim)0  
\lY_~*J  
int k=partition(data,i-1,j,data[j]); 4JEpl'5^Q  
SortUtil.swap(data,k,j); pJ=#zsE0  
if((k-i)>1) quickSort(data,i,k-1); ;*N5Y}?j'  
if((j-k)>1) quickSort(data,k+1,j); ),)lzN%!  
>7FHo-H/T  
} N;d] 14|  
/** u y+pP!<  
* @param data !<oe=)Iz|  
* @param i u!s2 BC0}N  
* @param j ~@!bsLSMU  
* @return .6> w'F{>  
*/ z{6Z 11|  
private int partition(int[] data, int l, int r,int pivot) { l.]xB,k  
do{ h 0|s  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @c#(.=  
SortUtil.swap(data,l,r); 7P T{lT  
} q| 7(  
while(l SortUtil.swap(data,l,r); ==B6qX8T  
return l; ,_P-$lB  
} O2+6st  
edD)TpmE,  
} (BM47 D=v  
9^x> 3Bo  
改进后的快速排序: UBs4K*h|  
QnDg 6m)+  
package org.rut.util.algorithm.support; Y@v>FlqI{  
YQ} o?Q$z  
import org.rut.util.algorithm.SortUtil; . me;.,$#  
.X&9Q9T=#  
/** t7pFW^&  
* @author treeroot C^){.UGmJ  
* @since 2006-2-2 /}$+uBgJm  
* @version 1.0 jCY %|  
*/ :]"V-1#}  
public class ImprovedQuickSort implements SortUtil.Sort { {I ((p_  
_GPe<H  
private static int MAX_STACK_SIZE=4096; <%^&2UMg  
private static int THRESHOLD=10; *i,%,O96Nz  
/* (non-Javadoc) Smh,zCc>s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vI?, 47Hj+  
*/ [7-?7mp!B  
public void sort(int[] data) { "7 yD0T)2  
int[] stack=new int[MAX_STACK_SIZE]; yu|>t4#GT  
>lm&iF3y  
int top=-1; N[hG8f  
int pivot; QP x^_jA  
int pivotIndex,l,r; t-AmX) $  
N+|d3X!  
stack[++top]=0; m~|40)   
stack[++top]=data.length-1; ]|@^1we  
hoP]9&<T  
while(top>0){ W)/#0*7  
int j=stack[top--]; 5G#n"}T  
int i=stack[top--]; ^q&x7Kv%  
K"6vXv4QO  
pivotIndex=(i+j)/2; iscz}E,Y  
pivot=data[pivotIndex]; `V1]k_h  
qK+5NF|  
SortUtil.swap(data,pivotIndex,j); Sdo-nt  
UG^q9 :t  
file://partition l{9Y  
l=i-1; Wqnc{oq |$  
r=j; Sz~OX6L  
do{ `L zPotz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wzA$'+Mb  
SortUtil.swap(data,l,r); =|=(l)8  
} }bDm@NU  
while(l SortUtil.swap(data,l,r); bcyzhK=  
SortUtil.swap(data,l,j); 1 zZlC#V  
3$tdwe$S  
if((l-i)>THRESHOLD){ |)&%A%m  
stack[++top]=i; GyIV Hby  
stack[++top]=l-1; 9?$i?  
} (Z*!#}z`  
if((j-l)>THRESHOLD){ .`lCWeHN  
stack[++top]=l+1; !i50QA|(G  
stack[++top]=j; I]575\bA  
} ' QG?nu  
7pd$\$  
} 1\Xw3prH  
file://new InsertSort().sort(data); pmM9,6P4@  
insertSort(data); b}f~il  
} SBpL6~NW  
/** \zY!qpX<  
* @param data :/#rZPPF  
*/ [ 3Gf2_  
private void insertSort(int[] data) { 8}[).d160  
int temp; RN1_S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bOB \--:]  
} _#niyW+?~  
} [GR; ?R5  
} _w{Qtj~s|  
KXy6Eno  
} ixFi{_  
.8R@2c`}Cs  
归并排序: m*pJBZxd  
6<]lW  
package org.rut.util.algorithm.support; 8y L Y  
zda 3 ,U2o  
import org.rut.util.algorithm.SortUtil; -~0^P,yQ  
hrn+UL:d  
/**  \zkg  
* @author treeroot ]'}L 1r  
* @since 2006-2-2 )UR7i8]!0  
* @version 1.0 QY/w  
*/ E.TAbD&5(  
public class MergeSort implements SortUtil.Sort{ ,2q-D&)\Z  
 &HW9Jn  
/* (non-Javadoc) O?2DQY?jT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tc! #wd+u  
*/ uYN`:b8  
public void sort(int[] data) { l;Wj]  
int[] temp=new int[data.length]; `Oa WGZ[  
mergeSort(data,temp,0,data.length-1); JI}'dU>*U:  
} 3$ pX  
l-Z4Mq6*L  
private void mergeSort(int[] data,int[] temp,int l,int r){ j_AACq {.  
int mid=(l+r)/2; UVP vOtZj  
if(l==r) return ; UfGkTwoo=  
mergeSort(data,temp,l,mid); 29Ki uP  
mergeSort(data,temp,mid+1,r); wj,=$RX  
for(int i=l;i<=r;i++){ +whDU2 "  
temp=data; q 1,~  
} <YY14p  
int i1=l; Xhm c6?  
int i2=mid+1; DU S6SO  
for(int cur=l;cur<=r;cur++){ SU0 hma8  
if(i1==mid+1) ! mHO$bQ"  
data[cur]=temp[i2++]; CrLrw T  
else if(i2>r) ^sw?gH*  
data[cur]=temp[i1++]; ";F'~}bDA  
else if(temp[i1] data[cur]=temp[i1++]; i@yC-))bY  
else s_Sk0}e  
data[cur]=temp[i2++]; ;TYBx24vD'  
} Dtk=[;"k2a  
} p+eh%2Jm  
z_HdISy0  
} /x hKd]Q  
1#x0q:6  
改进后的归并排序: oU8q o-J1H  
A"]YM'.  
package org.rut.util.algorithm.support; f#;>g  
.nJz G  
import org.rut.util.algorithm.SortUtil; :X=hQ:>P  
>7|VR:U?B  
/** Ac@VGT:9  
* @author treeroot _)8s'MjA:&  
* @since 2006-2-2 jp,4h4C^)  
* @version 1.0 K0~rN.C!0  
*/ ?4,T}@P  
public class ImprovedMergeSort implements SortUtil.Sort { 1?}T=)3+$  
DQ3<$0  
private static final int THRESHOLD = 10; dN q$}  
h{Y",7] !  
/* D7Z /H'|  
* (non-Javadoc) LVGe]lD  
* Xvu(vA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tw;}jh  
*/ !0+JbZ<%r|  
public void sort(int[] data) { 1M6D3d_  
int[] temp=new int[data.length]; a(nlTMfu  
mergeSort(data,temp,0,data.length-1); dd;~K&_Q/i  
} W1~0_;  
sRs>"zAg  
private void mergeSort(int[] data, int[] temp, int l, int r) { dV_G1'  
int i, j, k; i5Ggf"![  
int mid = (l + r) / 2; 23PGq%R  
if (l == r) **%37  
return; kVgTGC"L=  
if ((mid - l) >= THRESHOLD) "jZ-,P=  
mergeSort(data, temp, l, mid); fhiM U8(&  
else V gWRW7Se  
insertSort(data, l, mid - l + 1); Ml_^ `vn  
if ((r - mid) > THRESHOLD) o-5TC  
mergeSort(data, temp, mid + 1, r); !L(^(;$Kgr  
else C dn J&N{  
insertSort(data, mid + 1, r - mid); TjH][bH5  
Y2AJ+ |  
for (i = l; i <= mid; i++) { [n@] r2g)3  
temp = data; x5Bk/e'  
} SUiOJ[5,  
for (j = 1; j <= r - mid; j++) { >:-$+I  
temp[r - j + 1] = data[j + mid]; (`^1Y3&2  
} 04ui`-c(  
int a = temp[l]; }2jn[${ pr  
int b = temp[r]; @d'j zs  
for (i = l, j = r, k = l; k <= r; k++) { H_a[)DT  
if (a < b) { zhQJy?>'m  
data[k] = temp[i++]; 7!1S)dup  
a = temp;  B,@i  
} else { (PL UFT  
data[k] = temp[j--]; m O_af  
b = temp[j]; cuX)8+  
} ch]IzdD  
} #a#F,ZT  
} KlEpzJ98  
7CysfBF0g  
/** :WEDAFq0  
* @param data sJZ iI}Xc  
* @param l >4TO=i  
* @param i i-1op> Y  
*/ t@(HF-4~=  
private void insertSort(int[] data, int start, int len) { %{W6PrY{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1 MFbQs^  
} - ).C  
} )0`C@um  
} =X}J6|>X  
} .-zom~N-?  
&oNAv-m^GD  
堆排序: Rq-ZL{LR7  
-"x$ZnHU  
package org.rut.util.algorithm.support; ]Wup/o  
W/N7vAx X  
import org.rut.util.algorithm.SortUtil; 5xiEPh  
).O)p9  
/** KNl$3nX  
* @author treeroot inL(X;@yo  
* @since 2006-2-2 "]*tLL:`  
* @version 1.0 0-gAyiKx?  
*/ @7 }W=HB  
public class HeapSort implements SortUtil.Sort{ >P(.:_ ^p  
Uo49*Mr  
/* (non-Javadoc) ?,/ }`3Vw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (3e 2c  
*/ kJU2C=m@e2  
public void sort(int[] data) {  " bG2:  
MaxHeap h=new MaxHeap(); u8^lB7!e/  
h.init(data); `[A];]  
for(int i=0;i h.remove();  *CMx-_  
System.arraycopy(h.queue,1,data,0,data.length); ;uW FHc5@B  
} (FV >m  
(7Qo  
private static class MaxHeap{ hH.G#-JO  
BtZyn7a  
void init(int[] data){ sW$XH1Uf#  
this.queue=new int[data.length+1]; 0RfZEG)  
for(int i=0;i queue[++size]=data; u*R_\*j@  
fixUp(size); \V:^h [ad  
} z:O8Ls^\T  
} pg.%Pdr<$  
]e3Ax(i)  
private int size=0; DG/Pb)%Y  
okXl8&mi  
private int[] queue; 9WHddDA  
HW|IILFB  
public int get() { [ ~,AfY  
return queue[1]; kAx4fE[c  
} b>k y  
M|-)GvR$J  
public void remove() { N`i/mP  
SortUtil.swap(queue,1,size--); fA-7VdR`R  
fixDown(1); 2%1hdA<  
} pAEx#ck  
file://fixdown ~[: 2I  
private void fixDown(int k) { t^HRgY'NjM  
int j; *j=% #  
while ((j = k << 1) <= size) { GbyJ:  
if (j < size %26amp;%26amp; queue[j] j++; Ac6=(B  
if (queue[k]>queue[j]) file://不用交换 %y@AA>x!  
break; ysN3  
SortUtil.swap(queue,j,k); 2 c}E(8e]  
k = j; Rcv9mj]l  
} <3iMRe  
} 0(I j%Wi,  
private void fixUp(int k) { )jj0^f1!j  
while (k > 1) { J,G lIv.A  
int j = k >> 1; c> af  
if (queue[j]>queue[k]) GILfbNcd  
break; }G=M2V<L  
SortUtil.swap(queue,j,k); X]=t>   
k = j; $e\M_hp*J  
} `/g UV  
} [lAp62i5  
m|# y >4  
} NI5``BwpO  
n%-0V>  
} PFR:>^wK2  
0V]s:S  
SortUtil: l%ZhA=TKQ  
tkhCw/  
package org.rut.util.algorithm; YqG7h,F  
]4{H+rw  
import org.rut.util.algorithm.support.BubbleSort; 67TwPvh  
import org.rut.util.algorithm.support.HeapSort; +(*DT9s+  
import org.rut.util.algorithm.support.ImprovedMergeSort; iE{&*.q_}>  
import org.rut.util.algorithm.support.ImprovedQuickSort; _|p8M!  
import org.rut.util.algorithm.support.InsertSort; j|n R "!  
import org.rut.util.algorithm.support.MergeSort;  OSJ$d  
import org.rut.util.algorithm.support.QuickSort; 598i^z{~0%  
import org.rut.util.algorithm.support.SelectionSort; Al'3?  
import org.rut.util.algorithm.support.ShellSort; ZuIefMiG~+  
uEY tE7  
/** tgaO!{9I?  
* @author treeroot u>$t'  
* @since 2006-2-2 X 8|EHb<  
* @version 1.0 xPgBV~  
*/ `6YN3XS  
public class SortUtil { K^$=dLp  
public final static int INSERT = 1; ':W[A  
public final static int BUBBLE = 2; HDKbF/  
public final static int SELECTION = 3; ] - .aL  
public final static int SHELL = 4; b[yiq$K/  
public final static int QUICK = 5; 7rA;3?p)  
public final static int IMPROVED_QUICK = 6; 8Y3I0S  
public final static int MERGE = 7; y]im Z4{/  
public final static int IMPROVED_MERGE = 8; +RXoi2"-q@  
public final static int HEAP = 9; Wm|lSisY  
eFAnFJ][L  
public static void sort(int[] data) { "j-CZ\]U|  
sort(data, IMPROVED_QUICK); r/sNrB1U"y  
} HThcn1u~^b  
private static String[] name={ H-%v3d>3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" q=G+Tocv  
}; G`zm@QL  
.2pK.$.  
private static Sort[] impl=new Sort[]{ 2%> FR4a  
new InsertSort(), j9,P/K$:w  
new BubbleSort(), K#xv u1U  
new SelectionSort(), 6#yUc_5 \  
new ShellSort(), P$sxr  
new QuickSort(), AEuG v}#  
new ImprovedQuickSort(), m4& /s  
new MergeSort(), 2(nlJ7R  
new ImprovedMergeSort(), fLVAKn  
new HeapSort() bfO=;S]b!  
}; `kr?j:g  
a> )f=uS  
public static String toString(int algorithm){ w:l"\Tm  
return name[algorithm-1]; <or2  
} W l1 6`9  
.KC ++\{HE  
public static void sort(int[] data, int algorithm) { yBRC*0+Vy  
impl[algorithm-1].sort(data); m3ff;,  
} {^'HL   
4~=l}H>&  
public static interface Sort { J=L5=G7(  
public void sort(int[] data); ?}7p"3j'z  
} -F92-jBM4  
66 Tpi![  
public static void swap(int[] data, int i, int j) { 7 ?t6UPf  
int temp = data; ^J d r>@  
data = data[j]; v@Ox:wl>  
data[j] = temp; zT[!o j7  
} smLQS+UE  
} LF7SS;&~f  
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