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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。 _>&X\`D   
插入排序: L +b6!2O,  
kMIcK4.MH  
package org.rut.util.algorithm.support; 8V'~UzK  
zu_8># i-  
import org.rut.util.algorithm.SortUtil; D+TD 95t  
/** }|h# \$w  
* @author treeroot Ua:}Vn&!  
* @since 2006-2-2 ^UP`%egR  
* @version 1.0 &GpRI(OB/+  
*/ P78g /p T  
public class InsertSort implements SortUtil.Sort{ @a! #G  
Dj"F\j 1  
/* (non-Javadoc) Wf+cDpK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `KZm0d{H  
*/ 5'OrHk;u  
public void sort(int[] data) { G30-^Tr   
int temp; 8I=2lK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =9H7N]*h  
} Vr3Zu{&2  
} KjD/o?JUr  
} {&&z-^  
?g_3 [Fk  
} W: z6Koc0  
'TTLo|@"-  
冒泡排序: Xr,1&"B&t  
G<L;4nA)  
package org.rut.util.algorithm.support; yuh *  
<$D`Z-6  
import org.rut.util.algorithm.SortUtil; =*oJEy"  
N=V==Dbu-  
/** P\E<9*V  
* @author treeroot ]%;:7?5l  
* @since 2006-2-2 9)l$ aBa  
* @version 1.0 #|uCgdi  
*/ )HEa<P^kJl  
public class BubbleSort implements SortUtil.Sort{ [:7'?$  
#]\Uk,mhZB  
/* (non-Javadoc) ^ gdaa>L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )*u8/U  
*/ `}p0VmD{NE  
public void sort(int[] data) { 7y.kQI?3  
int temp; /T"+KU*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `aOFs+<)  
if(data[j] SortUtil.swap(data,j,j-1); * ` JYC  
} z0 d.J1VW  
} wo3d#=   
} D, k6$`  
} J"0`%'*/  
Sh/08+@+L:  
} Lc}y<=P@  
 0HZ{Y9]  
选择排序: !Lu2  
]}V<*f  
package org.rut.util.algorithm.support; V.U| #n5  
Z3Og=XHR  
import org.rut.util.algorithm.SortUtil; wi!?BCseq  
?al'F  q  
/** 4VHn  \  
* @author treeroot &5>Kl}7  
* @since 2006-2-2 jVEGj5F;N  
* @version 1.0 0Fq} N  
*/ :a!^   
public class SelectionSort implements SortUtil.Sort { T;4NRC  
P?%s #I:  
/* F|`Hm  
* (non-Javadoc) xw.A #Zb\_  
* (O\ )_#-D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 s\Wtw:  
*/ zOJ%}  
public void sort(int[] data) { A@`}c,G  
int temp; L7l FtX+b  
for (int i = 0; i < data.length; i++) { kj Jn2c:y  
int lowIndex = i; Z*F3G#A  
for (int j = data.length - 1; j > i; j--) { 11NQR[  
if (data[j] < data[lowIndex]) { 9p]QM)M  
lowIndex = j; HVRZ[Y<^  
} Usvl}{L[  
} d z|or9&  
SortUtil.swap(data,i,lowIndex); 28-RC>,@}  
} [z:!j$K  
} &0d# Y]D4`  
b 1c y$I  
} #`^}PuQ  
(&r. w  
Shell排序: [+^1.N  
p:&8sO!m  
package org.rut.util.algorithm.support; "MeVE#O  
,CJWO bn3  
import org.rut.util.algorithm.SortUtil; "69s) ~  
t5Sy V:fP  
/** KS+'|q<?w  
* @author treeroot /WcG{Wdp  
* @since 2006-2-2 !t"4!3  
* @version 1.0 Z{*\S0^ST  
*/ 7g^]:3f!   
public class ShellSort implements SortUtil.Sort{ XPc^Tq  
[NTzcSN.  
/* (non-Javadoc) : 6jbt:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RU|Q ]Ymx  
*/ -OV&Md:~  
public void sort(int[] data) { gb1V~  
for(int i=data.length/2;i>2;i/=2){ L;z?a Z7n  
for(int j=0;j insertSort(data,j,i); rSY!vkLE\  
} 9 ql~q  
} RH W]Z Pr<  
insertSort(data,0,1); AI2)g1m  
} z^B,:5Tt  
D\v+wp.  
/** h4gXvPS&r  
* @param data hPkp;a #  
* @param j =IZT(8  
* @param i ,)cM3nu  
*/ L(6d&t'|-R  
private void insertSort(int[] data, int start, int inc) { %uDi#x.  
int temp; gT. sj d  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C[cbbp  
} .^`{1%  
} aqZi:icFa  
} u,ho7ht3(  
WCZjXDiwJ  
} :U|1xgB  
B`)BZ,#p  
快速排序: |d2SIyUc  
dFxIF;C>/  
package org.rut.util.algorithm.support; DeVv4D:}@  
),%%$G\  
import org.rut.util.algorithm.SortUtil; K8|r&`X0  
;?Tbnn Wn  
/** LVM%"sd?  
* @author treeroot %6 zB Sje  
* @since 2006-2-2 5vQHhwO50k  
* @version 1.0 s[>,X#7 y  
*/ mthA4sz  
public class QuickSort implements SortUtil.Sort{ n&4N[Qlv,  
+HpA:]#Y  
/* (non-Javadoc) {lzWrUGO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QW~E&B%  
*/ 6Igz:eX  
public void sort(int[] data) { ,<_A2t 2  
quickSort(data,0,data.length-1);  4\N ;2N  
} !qQl@j O  
private void quickSort(int[] data,int i,int j){ y-b%T|p9  
int pivotIndex=(i+j)/2; 1s&zMWC  
file://swap u/0h$l  
SortUtil.swap(data,pivotIndex,j); WDYeOtc  
yWc$>ne[L  
int k=partition(data,i-1,j,data[j]); tKuwpT1Qc  
SortUtil.swap(data,k,j); "S]0  
if((k-i)>1) quickSort(data,i,k-1); 9<?M8_  
if((j-k)>1) quickSort(data,k+1,j); oSKXt}sh  
2 RX;Ob_  
} 9rX&uP)j^#  
/** $99n&t$Y  
* @param data oCv.Ln1;Z  
* @param i {w O|)|  
* @param j m])y.T  
* @return iq8<ov  
*/ ;4\ 2.* s  
private int partition(int[] data, int l, int r,int pivot) { ub0.J#j@  
do{ ?zMHP#i  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); < NY^M!  
SortUtil.swap(data,l,r); `$IK`O  
} fplow  
while(l SortUtil.swap(data,l,r); ys^oG$lq  
return l; Lg+Ac5y}`  
} +)om^e@.  
H|<[YYk  
} ;8&3 dm]  
NiEUW.0  
改进后的快速排序: RLXL&  
,-LwtePJ0  
package org.rut.util.algorithm.support; +o{R _  
M/'sl;  
import org.rut.util.algorithm.SortUtil; [S%_In   
wmL'F:UP  
/** UhWNl]Z  
* @author treeroot )EuvRLo{S7  
* @since 2006-2-2 uAq~=)F>,  
* @version 1.0 ua$GNm  
*/ e]"W!K cD9  
public class ImprovedQuickSort implements SortUtil.Sort { Fyx|z'4b  
{4}yKjW%z  
private static int MAX_STACK_SIZE=4096; n,(sBOQ  
private static int THRESHOLD=10; =ho}oL,ZO  
/* (non-Javadoc) wssRA?9<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n)-$e4u2  
*/ {6|G@ ""O  
public void sort(int[] data) { %XDc,AR[  
int[] stack=new int[MAX_STACK_SIZE]; HZB>{O  
xrz,\eTb  
int top=-1; Sq V},  
int pivot; 10~k2{Z  
int pivotIndex,l,r; /9*B)m"  
$9#H04.x  
stack[++top]=0; n ATuD  
stack[++top]=data.length-1; J1|\Q:-7p  
l/ GGCnO/  
while(top>0){ 6vo;!V6  
int j=stack[top--]; }OR@~V{Gj  
int i=stack[top--]; @})|Z}~  
E0=)HTtS  
pivotIndex=(i+j)/2; ,eW%{[g(  
pivot=data[pivotIndex]; ^ogt+6c  
GW@;}m(  
SortUtil.swap(data,pivotIndex,j); YUD`!C  
BO ;tCEV?  
file://partition D,*3w'X!K  
l=i-1; rQs)O<jl  
r=j; 8 +/rlHp  
do{ (0r3/t?DQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L.2^`mZs  
SortUtil.swap(data,l,r); ZohCP  
} 6dt]`zv/  
while(l SortUtil.swap(data,l,r); 9 ';JXf$  
SortUtil.swap(data,l,j); G@\1E+Ip  
&j`}vg  
if((l-i)>THRESHOLD){ ".V$~n(  
stack[++top]=i; k68T`Ub\W6  
stack[++top]=l-1; 'Cfl*iNb  
} Wx}8T[A}  
if((j-l)>THRESHOLD){ X1|njJGO1  
stack[++top]=l+1; Jb@V}Ul$  
stack[++top]=j; qPK*%Q<;  
} *b}HNX|  
;O6;.5q&  
} gQg"j)  
file://new InsertSort().sort(data); J.b9F:&}  
insertSort(data); t;Sb/3  
} NjScc%@y  
/** QB uMJm  
* @param data Ad8n<zt|  
*/ wLH>:yKUU  
private void insertSort(int[] data) { m|n%$$S&  
int temp; X,_2FJv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cWaSn7p!X  
} I\{ 1u  
} Y@vTaE^w3  
} QzVnL U)  
 a=9:[  
} W?R6ZAn  
4<Utmr  
归并排序: w^|*m/h|@u  
VcO0sa f`  
package org.rut.util.algorithm.support; 61>.vT8P  
EStB#V^  
import org.rut.util.algorithm.SortUtil; g`' !HGY  
oXh#a8  
/** C.yQ=\U2  
* @author treeroot HGs $*  
* @since 2006-2-2 2B[X,rL.pX  
* @version 1.0 jyUjlYAAv`  
*/ ox~o J|@  
public class MergeSort implements SortUtil.Sort{ 3g,`.I_  
dI(@ZV{  
/* (non-Javadoc) :Zbg9`d*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jh%Eq+#S  
*/ ,{u yG:  
public void sort(int[] data) { '(f*2eE:  
int[] temp=new int[data.length]; Uw. `7b>B  
mergeSort(data,temp,0,data.length-1); 8,4"uuI  
} { ]{/t-=  
/<=u\e'rE  
private void mergeSort(int[] data,int[] temp,int l,int r){ QL&ZjSN  
int mid=(l+r)/2; ]Ji.Zk  
if(l==r) return ; v5#j Z$<F  
mergeSort(data,temp,l,mid); uM IIYS  
mergeSort(data,temp,mid+1,r); feDlH[$  
for(int i=l;i<=r;i++){ t ;;U}  
temp=data; |O|V-f{l  
} |!3DPA(_  
int i1=l;  4iazNl#  
int i2=mid+1; w !-gJmX>  
for(int cur=l;cur<=r;cur++){ ghG**3xr  
if(i1==mid+1) {j?FNOJn  
data[cur]=temp[i2++]; *SDs;kg  
else if(i2>r) N1}sHyVq7  
data[cur]=temp[i1++]; u<tbbKM  
else if(temp[i1] data[cur]=temp[i1++]; yy^q2P  
else '4+ ur`  
data[cur]=temp[i2++]; {9&;Q|D z  
} !Y0Vid  
} D rUO-  
i(%W_d!  
} 2^[ `eg  
TOB-aAO  
改进后的归并排序: }%ojw |  
nLZTK&7}  
package org.rut.util.algorithm.support; pk$l+sNZ=  
SumF  2  
import org.rut.util.algorithm.SortUtil; OUPUixz2Z  
~S"+S/z/k  
/** ifMRryN4  
* @author treeroot wo;~7K  
* @since 2006-2-2 7Jyy z,!5  
* @version 1.0 en4k/w_  
*/ a od-3"7[  
public class ImprovedMergeSort implements SortUtil.Sort { |}s*E_/[  
'j8:vq^d  
private static final int THRESHOLD = 10; u"cV%(#  
*eTqVG.  
/* bQg:zww  
* (non-Javadoc) Ha0M)0Anv  
* p J! mw\:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /!yU !`bY  
*/ OhQgF  
public void sort(int[] data) { %op**@4/t\  
int[] temp=new int[data.length]; Q^9_' t}X  
mergeSort(data,temp,0,data.length-1); / |;RV"  
} _lJ!R:*  
%A9NB!  
private void mergeSort(int[] data, int[] temp, int l, int r) { |PCm01NU!  
int i, j, k; )np:lL$$  
int mid = (l + r) / 2; :1. L}4"gg  
if (l == r) shy-Gu&  
return; urs,34h  
if ((mid - l) >= THRESHOLD) F4-$~ v@  
mergeSort(data, temp, l, mid); Mlg0WrJ|2  
else D(@S+r_ota  
insertSort(data, l, mid - l + 1); 2+ N]PW\V  
if ((r - mid) > THRESHOLD) j ?3wvw6T  
mergeSort(data, temp, mid + 1, r); T"}5}6rSG  
else X Swl Tg  
insertSort(data, mid + 1, r - mid); g#pr yYz  
O-0x8O^B  
for (i = l; i <= mid; i++) { ?DS@e@lx  
temp = data; f M :]&  
} T?CdZc.  
for (j = 1; j <= r - mid; j++) { F`9xVnK=  
temp[r - j + 1] = data[j + mid]; lBLARz&c#  
} 'A=^Se`=  
int a = temp[l]; t:x\kp  
int b = temp[r]; b;B%q$sntC  
for (i = l, j = r, k = l; k <= r; k++) { A7Cm5>Y_S  
if (a < b) { kYP#SH/  
data[k] = temp[i++]; CAig ]=2'  
a = temp; :S{BbQ){]  
} else { \j}ZB<.>  
data[k] = temp[j--]; K^)Eb(4  
b = temp[j]; "+R+6<"  
} PfAgM1   
} 7FP*oN?  
} $D~0~gn~  
6m/r+?'  
/** U/66L+1  
* @param data [x=s(:qy  
* @param l :(U ,x<>  
* @param i Fo (fWvz  
*/ hlvK5Z   
private void insertSort(int[] data, int start, int len) { Jc&{`s^Nu  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Fj8z  
} P-9)38`5  
} kr^P6}'  
} z>1Pz(  
} lne4-(DJ  
X&.ArXn*  
堆排序: *2>&"B09`  
;>U2|>5V  
package org.rut.util.algorithm.support; D# 9m\o_  
?um;s-x)  
import org.rut.util.algorithm.SortUtil; ]!W=^!  
ihhDOmUto  
/** U|H=Y"pL  
* @author treeroot niMsQ  
* @since 2006-2-2 /e5O"@  
* @version 1.0 :[.vM  
*/ IEL%!RFG  
public class HeapSort implements SortUtil.Sort{ 6fE7W>la  
Di,^%  
/* (non-Javadoc) P8OaoPj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M~Tuj1?  
*/ f <Zxz9  
public void sort(int[] data) { PV.X z0@R  
MaxHeap h=new MaxHeap(); H*?t^  
h.init(data); Ea=8}6`s  
for(int i=0;i h.remove(); D=A&+6B@-  
System.arraycopy(h.queue,1,data,0,data.length); XAD- 'i  
} wyH[x!QX  
9R!atPz9  
private static class MaxHeap{ 1 fp?  
VD;01"#'  
void init(int[] data){ `f,/`''R  
this.queue=new int[data.length+1]; *nT<m\C6  
for(int i=0;i queue[++size]=data; gmUz9P(  
fixUp(size); P1. [  
} f=l rg KE  
} nmee 'oEw  
o"s)eh  
private int size=0; W<h)HhyG  
k&M;,e3v6  
private int[] queue; `z}?"BW|  
yt+L0wzzB  
public int get() { (fH#I tf  
return queue[1]; [~+wk9P  
} )NW)R*m~D  
c8 )DuJ#U  
public void remove() { + )AG*  
SortUtil.swap(queue,1,size--); aL\PGdgO  
fixDown(1); L8@f-Kk  
} c`)\Pb/O  
file://fixdown etQCzYIhn  
private void fixDown(int k) { udK%>  
int j; w0 M>[ 4  
while ((j = k << 1) <= size) { dM.f]-g  
if (j < size %26amp;%26amp; queue[j] j++; pHGYQ;:L  
if (queue[k]>queue[j]) file://不用交换 C$=%!wf  
break; ~f2z]JLr:  
SortUtil.swap(queue,j,k); x`eo"5.$  
k = j; 1 &jc/*Z"  
} M/B_#yK  
} J'6PmPzY|  
private void fixUp(int k) { Xz 6<lLb  
while (k > 1) { df8k7D;~e  
int j = k >> 1; j<m(PHSe  
if (queue[j]>queue[k]) 3GYw+%Z]  
break; etDk35!h~,  
SortUtil.swap(queue,j,k); +%z> H"J.  
k = j; Hzm:xg  
} @,j*wnR  
} 5X:AbF  
6D;Sgc5"  
} G6Axs1a  
fivw~z|[@  
} zy?|ODM  
5:[0z5Hww  
SortUtil: [C 7^r3w  
88O8wJN  
package org.rut.util.algorithm; ]"As1"  
y-pJF{ R  
import org.rut.util.algorithm.support.BubbleSort; n: ^ d|@  
import org.rut.util.algorithm.support.HeapSort; $?iLLA~  
import org.rut.util.algorithm.support.ImprovedMergeSort; gT{Q#C2Baw  
import org.rut.util.algorithm.support.ImprovedQuickSort; x M/+L:_<  
import org.rut.util.algorithm.support.InsertSort; Ys9[5@7  
import org.rut.util.algorithm.support.MergeSort; caR<Kb:;*  
import org.rut.util.algorithm.support.QuickSort; ,$L4dF3  
import org.rut.util.algorithm.support.SelectionSort; IxN9&xa  
import org.rut.util.algorithm.support.ShellSort; ='r!g  
f1RWP@iar  
/** ;vR4XHl|  
* @author treeroot 5J.bD)yrP  
* @since 2006-2-2 #6aW9GO  
* @version 1.0 ?/E~/;+7=  
*/ +zN-!5x  
public class SortUtil { m,_Z6=I:  
public final static int INSERT = 1; |*eZD-f  
public final static int BUBBLE = 2; 8P\G }  
public final static int SELECTION = 3; 9 RgVK{F  
public final static int SHELL = 4; 6dr%;Wp  
public final static int QUICK = 5; PcMD])Z{G  
public final static int IMPROVED_QUICK = 6; y3Qsv  
public final static int MERGE = 7; ha<[b ue  
public final static int IMPROVED_MERGE = 8; 1Faf$J~7|  
public final static int HEAP = 9; e;q!6%  
J7$5s  
public static void sort(int[] data) { ,5p(T_V/  
sort(data, IMPROVED_QUICK); |Pax=oJ\M  
} %)8}X>xq  
private static String[] name={ ./Zk`-OBT  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Lnl(2xD  
}; :K,i\  
T@B/xAq5!  
private static Sort[] impl=new Sort[]{ /N10  
new InsertSort(), x_Y!5yg E  
new BubbleSort(), H [\o RId  
new SelectionSort(), oG?Xk%7&\  
new ShellSort(), _Kf%\xg  
new QuickSort(), 3AtGy'NTp  
new ImprovedQuickSort(), r.&Vw|*>  
new MergeSort(), [#vH'y  
new ImprovedMergeSort(), hp X9[3  
new HeapSort() ZgcMv,=  
}; R$<&ie6UQ  
',@3>T**  
public static String toString(int algorithm){ OU_gdp  
return name[algorithm-1]; M#6W(|V/  
} 7hcYD!DS  
kd(8I_i@  
public static void sort(int[] data, int algorithm) { O"9\5(w  
impl[algorithm-1].sort(data); 20h, ^  
} .f2bNnB~pP  
g}{aZ$sta  
public static interface Sort { RWZSQ~  
public void sort(int[] data); xwq (N_  
} >uB# &Q  
]y '>=a|T  
public static void swap(int[] data, int i, int j) { ^A/k)x6  
int temp = data; ` p-cSxR_  
data = data[j]; %)W2H^  
data[j] = temp; &)ChQZA  
} 19)i*\+  
} hd<c&7|G'  
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