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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。 KDX$.$#  
插入排序: -2z,cj&E{  
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package org.rut.util.algorithm.support; 9G+y.^/6  
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import org.rut.util.algorithm.SortUtil; Slo9#26  
/** <(Tiazg  
* @author treeroot +!G4tA$g  
* @since 2006-2-2 p ^](3Vi(  
* @version 1.0 mUiOD$rO  
*/ 8Y7 @D$=w  
public class InsertSort implements SortUtil.Sort{ srhFEmgN7)  
-S7RRh'p  
/* (non-Javadoc) ` -yhl3si  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h k/+  
*/ %5`r-F  
public void sort(int[] data) { G IK u  
int temp; QT7_x`#J~o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \y@ eBW  
} 8KZ$ F>T]>  
} Pb3EnNqYbM  
}  w}"!l G  
|E? ,xWN  
} 0}6QO  
J/L)3y   
冒泡排序: U>bP}[&S  
g&q^.7c}  
package org.rut.util.algorithm.support; Rnz8 f}  
yg`E22  
import org.rut.util.algorithm.SortUtil; OX`?<@6  
X1O65DMr`g  
/** wXP_]-  
* @author treeroot /#@LRN<oCq  
* @since 2006-2-2 o}d2N/T  
* @version 1.0 B%)zGTp6  
*/ Q Xsfp  
public class BubbleSort implements SortUtil.Sort{ +BU0 6lLD  
ysL0hwir  
/* (non-Javadoc) j-j'phK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,!jR:nApE  
*/ <` #,AVH  
public void sort(int[] data) { f(^33k  
int temp; ^NY+wR5Sn  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7xz#D4[  
if(data[j] SortUtil.swap(data,j,j-1); |}:e+?{o  
} bGhhh/n  
} LH bZjZ2  
} %f_FGh  
} FYxUOO  
b8eDD+ulk  
} m=#aHF  
?`za-+<r<  
选择排序: _F! :(@}  
#W_i{bdO  
package org.rut.util.algorithm.support; SnH:(tO[X  
GOUY_&}tL  
import org.rut.util.algorithm.SortUtil; =;kRk .qzy  
i:MlD5 F  
/** l kI8 {  
* @author treeroot [^h/(a`  
* @since 2006-2-2 "tqS|ok.  
* @version 1.0 b(g_.1[  
*/ :8GlyN<E  
public class SelectionSort implements SortUtil.Sort { U&w*Sb"  
TXA. 6e  
/* H't`Q&]a  
* (non-Javadoc) GjG{qR  
* c& 9+/JYMo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [3Wsc`Q  
*/ rOs)B21/  
public void sort(int[] data) { u?F7 L8q]  
int temp; e{c._zr,  
for (int i = 0; i < data.length; i++) { ,)0/Ec  
int lowIndex = i; U{j5kX  
for (int j = data.length - 1; j > i; j--) { ;4+qPWwq8W  
if (data[j] < data[lowIndex]) { KteZK.+#:  
lowIndex = j; L&+% Wd~  
} nC-c8y  
} dY/|/eOt<K  
SortUtil.swap(data,i,lowIndex); pE9aT5 L  
} #p11D= @[  
} 8:;u v7p  
k#{lt-a/  
} v'mJ~tz  
8 /:X& &  
Shell排序: mBYS"[S(  
JS<e`#c&  
package org.rut.util.algorithm.support; okd  ``vG  
Dx9$H++6$X  
import org.rut.util.algorithm.SortUtil; | 7t=\  
)Mm;9UA  
/** w*|=k~z  
* @author treeroot Sn{aHH  
* @since 2006-2-2 r4]hS`X~%  
* @version 1.0 mtiO7w"M\7  
*/ ymzPJ??!  
public class ShellSort implements SortUtil.Sort{ <z~2d  
HYa$EE2  
/* (non-Javadoc) C*Y :w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _47j9m]f  
*/ \i&vOH'  
public void sort(int[] data) { 8u7K$Q  
for(int i=data.length/2;i>2;i/=2){ -oaG|  
for(int j=0;j insertSort(data,j,i); V1UUAvN7s  
} 9-X{x95]  
} +35)=Uov  
insertSort(data,0,1); '<*CD_2t-  
} .:#_5K  
 0jip::x  
/** Q"l"p:n%n  
* @param data //`cwnjp  
* @param j RE(=! 8lGR  
* @param i USHlb#*  
*/ _E x*%Qf.  
private void insertSort(int[] data, int start, int inc) { J?|K#<%  
int temp; yhJA;&}>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ebl)6C  
} q.u[g0h;  
} V PLCic,T  
} b7>,-O  
}uV?  
} EL2hD$  
$Hl+iF4j<  
快速排序: l&e5_]+%  
? bUpK  
package org.rut.util.algorithm.support; ]%WD} 4e  
}]Gi@Nh|o  
import org.rut.util.algorithm.SortUtil; >yPFL'  
Bsih<`KF^  
/** S1x.pLHj8  
* @author treeroot D-2v>l_  
* @since 2006-2-2 Bp=oTC G  
* @version 1.0 priT 7!  
*/ e$FAhwpon  
public class QuickSort implements SortUtil.Sort{ :!Y?j{sGU  
!?us[f=g%  
/* (non-Javadoc) `K@df<}%*,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tehI!->l  
*/ #*7/05)  
public void sort(int[] data) { FJwZo}<6E  
quickSort(data,0,data.length-1); mV! @oNCK  
} 9wDBC~.  
private void quickSort(int[] data,int i,int j){ u]>>B>KOJ7  
int pivotIndex=(i+j)/2; Ok~W@sYST  
file://swap >TQBRA;'  
SortUtil.swap(data,pivotIndex,j); GP7) m  
w50Bq&/jX  
int k=partition(data,i-1,j,data[j]); fW4cHB 9|  
SortUtil.swap(data,k,j); I ]WeZ,E  
if((k-i)>1) quickSort(data,i,k-1); *]E7}bqb  
if((j-k)>1) quickSort(data,k+1,j); iz%A0Z+`bg  
Vm,f3~  
} "Wn?8vR  
/** P!4{#'_}  
* @param data 7gdU9c/q,  
* @param i KWn1%oGJ  
* @param j &xiDG=I#  
* @return 6Qzu-  
*/ #pm-nU%|_j  
private int partition(int[] data, int l, int r,int pivot) { *?R\[59  
do{ !=h|&Vta  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); mrLx]og,  
SortUtil.swap(data,l,r); /i~^LITH  
} EV?47\ ~  
while(l SortUtil.swap(data,l,r); d;NFkA(df  
return l; R6WgA@Z|r  
} ah!O&ECh  
  L@k;L  
} *|,ykb>  
UmD-7Fd  
改进后的快速排序: %&=(,;d  
rJc)< OZjT  
package org.rut.util.algorithm.support; gA 6h5F)_  
,p/b$d1p  
import org.rut.util.algorithm.SortUtil; !$KhL.4P  
7N59B z  
/** dD.d?rnZq7  
* @author treeroot uZiY<(X  
* @since 2006-2-2 ?od}~G4s#  
* @version 1.0 UA!Gr3  
*/ ap$ tu3j  
public class ImprovedQuickSort implements SortUtil.Sort { YaJ{"'}  
N5rG.6K  
private static int MAX_STACK_SIZE=4096; i\Q"a B"r  
private static int THRESHOLD=10; E][{RTs  
/* (non-Javadoc) N>nvt.`P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >&TnTv?I  
*/ 4xpWO6Q  
public void sort(int[] data) { /@nRL  
int[] stack=new int[MAX_STACK_SIZE]; 3!oQmG_T  
g<T`F  
int top=-1; 4{pemqS*  
int pivot; Vg,>7?]6h  
int pivotIndex,l,r; q V UUuyF  
7U[L\1zS  
stack[++top]=0; | 8L`osg  
stack[++top]=data.length-1; Va |9)m  
kW2nrkF  
while(top>0){ K%TKQ<R|  
int j=stack[top--]; r(in]7  
int i=stack[top--]; ]20 "la5  
X,Q=n2X?3  
pivotIndex=(i+j)/2; tId !C  
pivot=data[pivotIndex]; IL6f~!  
"k1Tsd-  
SortUtil.swap(data,pivotIndex,j); =@jMx^A"  
ks#Z~6+3  
file://partition /jn3'q_,  
l=i-1; &pY G   
r=j; u g:G9vjQ  
do{ gUszMhHX  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \Af|$9boHz  
SortUtil.swap(data,l,r); >wS:3$Q  
} E#2k|TpH4  
while(l SortUtil.swap(data,l,r); Qdr-GODx  
SortUtil.swap(data,l,j); -z 5k4Y  
.kKwdqO+zB  
if((l-i)>THRESHOLD){ FPUR0myCU  
stack[++top]=i; L|1zHDxQ  
stack[++top]=l-1; C94UF7al  
} hHl-;%#  
if((j-l)>THRESHOLD){ ExP25T  
stack[++top]=l+1; j]l}K*8(  
stack[++top]=j; hC, -9c  
} nk3<]u  
aCi^^}!  
} X@AkA9'fq  
file://new InsertSort().sort(data); s^?sJUj  
insertSort(data); \y )4`A  
} PLD'Q,R  
/** b}L,kT  
* @param data 7CL@i L Tq  
*/ g&F<Uv#mZ  
private void insertSort(int[] data) { _t;VE06Xjs  
int temp; V =aoB Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aLk2#1$g  
} 1gy}E=noP  
} _yB9/F  
} BvW gH.OX  
n25tr'=  
} JX0_UU  
y3[)zv  
归并排序: b G5  
*;yMD-=  
package org.rut.util.algorithm.support; o4 g  
{ZM2WFpE  
import org.rut.util.algorithm.SortUtil; >Wit"p  
ZFuJ2 :  
/** s&`XK$p  
* @author treeroot hG;=ci3EE  
* @since 2006-2-2 ^RAFmM#F  
* @version 1.0 .QQI~p0:  
*/ dlzamoS@AR  
public class MergeSort implements SortUtil.Sort{ g7z9i[  
27 TZ+?  
/* (non-Javadoc) y^46z( I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RrpF i'R  
*/ "sx&8H"  
public void sort(int[] data) { HeifFJn  
int[] temp=new int[data.length]; Y9L6W+=T  
mergeSort(data,temp,0,data.length-1); yW(+?7U  
} ZpctsCz]  
J'c9577$  
private void mergeSort(int[] data,int[] temp,int l,int r){ T_%]#M  
int mid=(l+r)/2; 5 ^z ,'C  
if(l==r) return ; yj+b/9My   
mergeSort(data,temp,l,mid); sfPN\^k2  
mergeSort(data,temp,mid+1,r); Q!e0Vb  
for(int i=l;i<=r;i++){ 49fq6ZhO  
temp=data; <m:wuNEM  
} "jc)N46  
int i1=l; LbbQ3$@ WD  
int i2=mid+1; `DllW{l  
for(int cur=l;cur<=r;cur++){ ~tuFjj^  
if(i1==mid+1) _";pk  _  
data[cur]=temp[i2++]; xy3%z  
else if(i2>r) vl~   
data[cur]=temp[i1++]; `srZ#F5  
else if(temp[i1] data[cur]=temp[i1++]; *>$)#?t  
else &p4<@k\L  
data[cur]=temp[i2++]; KL"L65g&  
} G5f57F  
} _1c_TMh}9  
V"jnrNs3  
} 5g>kr< K  
>b?)WNk  
改进后的归并排序: *9(1:N;#  
jyH_/X5i7  
package org.rut.util.algorithm.support; ykhCt\t[  
SY)$2RC+}  
import org.rut.util.algorithm.SortUtil; @5G7bY7Nz  
y]4 `d  
/** -fgKSJ7  
* @author treeroot }z-  
* @since 2006-2-2 &*GX:0=/>  
* @version 1.0 5w{pX1z1  
*/ S)|b%mVwR  
public class ImprovedMergeSort implements SortUtil.Sort { =T4 w:  
u`@FA?+E1  
private static final int THRESHOLD = 10; R0<Vd"  
iX6jvnJ:/  
/* Q b{5*>  
* (non-Javadoc) <uwCP4E  
* O9)}:++T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I'b]s~u  
*/ ea>\.D-S  
public void sort(int[] data) { B&N&eRAE  
int[] temp=new int[data.length]; T@Z{KV"S  
mergeSort(data,temp,0,data.length-1); #de^~  
} 0w. _}C z  
rXPx* /C  
private void mergeSort(int[] data, int[] temp, int l, int r) { l8Qi^<i/  
int i, j, k; NWK_(=n  
int mid = (l + r) / 2; ,x.)L=Cx8  
if (l == r) g^UWf<xp  
return; S]=Vr%irX  
if ((mid - l) >= THRESHOLD) NYvj?>[y  
mergeSort(data, temp, l, mid); 82!GM.b  
else R_n-&d 'PP  
insertSort(data, l, mid - l + 1); [V0h9!  
if ((r - mid) > THRESHOLD) %pQ o%<d  
mergeSort(data, temp, mid + 1, r); fEv36xb2S  
else :ygz/L  
insertSort(data, mid + 1, r - mid); !T . @  
vGT.(:\-,  
for (i = l; i <= mid; i++) { }*R6p?L5  
temp = data; 7"i*J6y*  
} a`Z f_;$@  
for (j = 1; j <= r - mid; j++) { 9'h^59  
temp[r - j + 1] = data[j + mid]; !OgoV22  
} o|q#A3%?  
int a = temp[l]; S6tH!Z=(g  
int b = temp[r]; :K:gyVrC  
for (i = l, j = r, k = l; k <= r; k++) { .Kwl8xRg  
if (a < b) { %([H*sLX  
data[k] = temp[i++]; *=@pdQkR  
a = temp; 0|;=mYa4M  
} else { K.m[S[cy  
data[k] = temp[j--];  U~t(YT  
b = temp[j]; ]t;5kj/  
} ]bweQw@i  
} X-F HJ4  
} #?6RoFgMe  
? d\8Q't*  
/** Ntiz-qW  
* @param data x)L@x Q  
* @param l g>zL{[e!  
* @param i >K%x44|  
*/ =T$- #bA)  
private void insertSort(int[] data, int start, int len) { J[wXG6M  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1_lL?S3,a@  
} w,9F riW  
} 3vU (4}@  
} P$I\)Q H  
} Y&:i^k  
5K{h)* *5  
堆排序: OhEL9"\<  
-m/4\D  
package org.rut.util.algorithm.support; hhhO+D1(  
'7s!N F2  
import org.rut.util.algorithm.SortUtil; Dm#k-y  
p#2th`M:P1  
/** m@~x*+Iz  
* @author treeroot  U2$T}/@  
* @since 2006-2-2 I r~X#$Upc  
* @version 1.0 j83 V$ Le  
*/ Q@n kT1o  
public class HeapSort implements SortUtil.Sort{ "g-NUl`'  
T 1=M6iJ  
/* (non-Javadoc)  <@u6*]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6< Z9p@6  
*/ e.V){}{V  
public void sort(int[] data) { |e&Kg~~C  
MaxHeap h=new MaxHeap(); )K~nZLULY  
h.init(data); ]mA?TwD  
for(int i=0;i h.remove(); YyIt-fPZ  
System.arraycopy(h.queue,1,data,0,data.length); %>TdTt  
} `l#g`~L  
8t%1x|!  
private static class MaxHeap{ )3sb 2 #  
mN02T@R-  
void init(int[] data){ za7wNe(s  
this.queue=new int[data.length+1]; _wCSL.  
for(int i=0;i queue[++size]=data; e$=|-J z  
fixUp(size); J?'!8,RX  
} bAp`lmFI  
} \ua.%|  
g\'sGt3O  
private int size=0; 2|BE{91  
F1>,^qyG6  
private int[] queue; ^ a:F*<D  
kx[8#+P  
public int get() { E<dN=#f6  
return queue[1]; t ,$)PV  
} *Y Ox`z!R  
\`C3;}o:"P  
public void remove() { Ek3O{<  
SortUtil.swap(queue,1,size--); k1J}9HNYR  
fixDown(1); / yCV-L2J  
} 1zRO== b  
file://fixdown ] ?(=rm9u  
private void fixDown(int k) { }g?]B+0  
int j; X6RM2  
while ((j = k << 1) <= size) { . {I7sUQ  
if (j < size %26amp;%26amp; queue[j] j++; =%LS9e^7D  
if (queue[k]>queue[j]) file://不用交换 7Y/_/t~Y  
break; qM+T Wp  
SortUtil.swap(queue,j,k); 8@-US , |  
k = j; zVu}7v()  
} OK=t)6&b  
} ^-ZqS  
private void fixUp(int k) { o/R-1\Dn  
while (k > 1) { Wm 61  
int j = k >> 1; s/V[tEC*z  
if (queue[j]>queue[k]) T[~X~dqwn"  
break; B_> Fd&  
SortUtil.swap(queue,j,k); }R^{<{KVJ  
k = j; \B)<<[ $  
} wr`eBPu  
} v|6fqG+Q\  
y@I"Hk<T  
} pN[i%\vh  
+Ji dP  
} ''G @n*  
^s5)FdF8  
SortUtil: D$ \ EZ   
$3>|R lxYA  
package org.rut.util.algorithm; Go4l#6  
5zU$_M  
import org.rut.util.algorithm.support.BubbleSort; 9V~yK?  
import org.rut.util.algorithm.support.HeapSort; x)*[>d2yd  
import org.rut.util.algorithm.support.ImprovedMergeSort; rlD@O~P4  
import org.rut.util.algorithm.support.ImprovedQuickSort; Ch3##-  
import org.rut.util.algorithm.support.InsertSort; U/>5C:  
import org.rut.util.algorithm.support.MergeSort;  l}JVRU{  
import org.rut.util.algorithm.support.QuickSort; RaAq>B WPr  
import org.rut.util.algorithm.support.SelectionSort; pS0T>r  
import org.rut.util.algorithm.support.ShellSort; b> | oU  
d=[ .   
/** @ o]F~x  
* @author treeroot c c:xT0Y  
* @since 2006-2-2 ~1p f ?  
* @version 1.0 Z,*VRuA  
*/ ; ?!sU  
public class SortUtil { OX91b<A  
public final static int INSERT = 1; nP.d5%E  
public final static int BUBBLE = 2; @:}z\qBM  
public final static int SELECTION = 3; piU4%EO  
public final static int SHELL = 4; ,M9'S;&^  
public final static int QUICK = 5; ]Sh&8 #  
public final static int IMPROVED_QUICK = 6; ][3 "xP  
public final static int MERGE = 7; ctf'/IZ5  
public final static int IMPROVED_MERGE = 8; N'4*L=Ut  
public final static int HEAP = 9; SLW1]ZaG  
F)C8LH  
public static void sort(int[] data) { gN*8 zui  
sort(data, IMPROVED_QUICK); g& {YHq^+  
} {z w#My   
private static String[] name={ DGcd|>q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y#\e~>K  
}; bbz86]AhY  
OnG?@sW+4!  
private static Sort[] impl=new Sort[]{ LTxOq|/Cq  
new InsertSort(), d97wiE/i<  
new BubbleSort(), *fE5Z;!}  
new SelectionSort(), [* Lh4K  
new ShellSort(), S5j#&i  
new QuickSort(), + EM '-  
new ImprovedQuickSort(), 7Ev~yY;N  
new MergeSort(), jk~< si  
new ImprovedMergeSort(), Q9( eH2=  
new HeapSort() m#uutomi0  
}; BJqM=<nQ  
bp }~{]:b  
public static String toString(int algorithm){ 17-K~ybc  
return name[algorithm-1]; mV-MJ$3r  
} ~`y6YIJ3  
B|!Re4`0  
public static void sort(int[] data, int algorithm) { d6u L;eR  
impl[algorithm-1].sort(data); )pg?ZM9  
} lm$T`:c  
wDn5|F}i&  
public static interface Sort { "F=O   
public void sort(int[] data); _]B'C  
} m$]?Jq  
ZW2U9  
public static void swap(int[] data, int i, int j) { ur;8uv2o  
int temp = data; (u *-(  
data = data[j]; $#CkI09  
data[j] = temp; VQ +Xh  
} %.]qkGZe#  
} ~GZ(Ou-&  
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