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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。 AW]("pt  
插入排序: EgkZ$ah  
hVROzGZk  
package org.rut.util.algorithm.support; }u38:(^`ai  
alWx=+d  
import org.rut.util.algorithm.SortUtil; !Q<8c =f  
/** tOu90gu  
* @author treeroot vK[v eFH  
* @since 2006-2-2 =kyJaT^5[  
* @version 1.0 O[3q9*(  
*/ K[`4vsE  
public class InsertSort implements SortUtil.Sort{ {^2({A#&  
4UkP:Vz:  
/* (non-Javadoc) ?Aj\1y4L1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]J GKL5~p  
*/ IiYuUN1D  
public void sort(int[] data) { e_;%F`  
int temp; ' |h./.K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #mi0x06  
} QYFN:XZ  
} *8pe<:A#p  
} rHA/  
v3iDh8.__  
} (UbR%A|v;  
Q-H =wJ4R  
冒泡排序: ./aZV  
Q;{D8 #!  
package org.rut.util.algorithm.support; UEx(~>  
:*^(OnIe  
import org.rut.util.algorithm.SortUtil; WW,r9D:/  
Q#d+IIR0gK  
/** x`/m>~_  
* @author treeroot z|oA{VxW>  
* @since 2006-2-2 <yX@@8  
* @version 1.0 h$:&1jVY{  
*/ }0(vR_x  
public class BubbleSort implements SortUtil.Sort{ N6-2*ES  
Ae,2Xi  
/* (non-Javadoc) ?];~N5<'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ORFr7a'K  
*/ !>"INmz  
public void sort(int[] data) { f@,hO5h(_|  
int temp; >TH-Q[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ c +"O\j'  
if(data[j] SortUtil.swap(data,j,j-1); {VrAh*#h  
} Vj9`[1}1Z  
} #b<lt'gC  
} T-<>)N5y  
} uv_P{%TK  
;m M\, {Z  
} 6+{nw}e8  
~CjmYP'o  
选择排序: #lLn='4  
4Tbi%vF{  
package org.rut.util.algorithm.support; q=j/s4~  
SWe!9Y$  
import org.rut.util.algorithm.SortUtil; 7,&3=R <  
z}Mb4{d1  
/** '/ ]fZ|  
* @author treeroot 4)c"@Zf  
* @since 2006-2-2 0t/z "  
* @version 1.0 #o}{cXX#  
*/ XO8 H]  
public class SelectionSort implements SortUtil.Sort { l[x`*+ON:2  
 9\W5   
/* A~ %g"  
* (non-Javadoc) :\ON+LQr  
* 8B% O%*5`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^.><t+tM  
*/ ` Q!FMv6Y^  
public void sort(int[] data) { o@Cn_p^X  
int temp; ? ><   
for (int i = 0; i < data.length; i++) { lD+y, ";  
int lowIndex = i; F".IB^} $  
for (int j = data.length - 1; j > i; j--) { joSr,'x  
if (data[j] < data[lowIndex]) { 1)c=15^  
lowIndex = j; Vq;{+j(  
} N5I W@?4  
} B@~eBU,$  
SortUtil.swap(data,i,lowIndex); njx\$,ruN  
} O#89M%  
} VN55!l'OV  
rg]A_(3Bb  
} II f >z_m  
]#Z$jq{,  
Shell排序: Q& unA3  
bvxxE/?Ni  
package org.rut.util.algorithm.support; _sD]Viqc  
3M>FU4Ug2  
import org.rut.util.algorithm.SortUtil; pdXgr)Uv  
75BOiX  
/** Fr Q-v]c  
* @author treeroot c#4ZDjvm6  
* @since 2006-2-2 w7]p9B  
* @version 1.0 [.yx2@W  
*/ PrYWha=c-  
public class ShellSort implements SortUtil.Sort{ bNPjefBF  
VIlQzM;%^  
/* (non-Javadoc) )jQe K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4s+J-l  
*/ / hj9Q!  
public void sort(int[] data) { KE|u}M@v6  
for(int i=data.length/2;i>2;i/=2){ Z+pvdu  
for(int j=0;j insertSort(data,j,i); JKu6+V jO  
} 9zGKQ|X)  
} myo~Qqt?  
insertSort(data,0,1); 4mg 7f^[+  
} 36Fa9P FCc  
T_|fb)G+{  
/** Dg2#Gv0B  
* @param data [3 ;Y:&D  
* @param j C&#KdvN/r  
* @param i uEi.nSp)S  
*/ &>^Ympr  
private void insertSort(int[] data, int start, int inc) { 8"I5v(TV  
int temp; (;S]{z%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C Wl95g  
} 9#$V1(}?  
} o dQ&0d  
} :?of./Df|  
zdQu%q  
} Fq\`1Ee{  
%:8q7PN|  
快速排序: Fn0LE~O}-8  
*ytd.^@r  
package org.rut.util.algorithm.support; )T~ +>+t  
!gH.st  
import org.rut.util.algorithm.SortUtil; wQ/@+$>  
/)OO)B-r  
/** mDt",#g  
* @author treeroot QBT-J`Pz  
* @since 2006-2-2 . R8W<  
* @version 1.0 $S-;M0G x  
*/ \#*;H|U.x  
public class QuickSort implements SortUtil.Sort{ 5O;oo@A:[  
UC2 OY Zb  
/* (non-Javadoc) KcyM2hE7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u$`x]K=Zsm  
*/ Mm[1Z;H  
public void sort(int[] data) { |\L,r}1N  
quickSort(data,0,data.length-1); w"Y55EURB  
} zyQEz#O   
private void quickSort(int[] data,int i,int j){ .6-o?=5  
int pivotIndex=(i+j)/2; z&/ o  
file://swap -<^Q2]PE;  
SortUtil.swap(data,pivotIndex,j); ve/6-J!5Y.  
aRb:.\ \zc  
int k=partition(data,i-1,j,data[j]); vWfef~}~  
SortUtil.swap(data,k,j); B(T4 nH_k  
if((k-i)>1) quickSort(data,i,k-1); xg%]\#  
if((j-k)>1) quickSort(data,k+1,j); <:}AC{I  
IHX#BY>  
} f(ec/0W  
/** F$.s6Hh.  
* @param data ?g1 .-'  
* @param i :zy'hu;  
* @param j thboHPml{  
* @return nf@u7*# 6  
*/ M/`z;a=EP  
private int partition(int[] data, int l, int r,int pivot) { gJfL$S'w  
do{ 8Nq Iz  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -bX.4+U  
SortUtil.swap(data,l,r); !suiqP1\*  
} {mr)n3  
while(l SortUtil.swap(data,l,r); JM4`k8mM  
return l; )C0X]?   
}  l e/#J  
wI]>0geb*  
} hp%Pg &  
lcJumV=%>  
改进后的快速排序: +OP:"Q_#  
,]N%(>ot  
package org.rut.util.algorithm.support; >knR>96  
I }I/dh  
import org.rut.util.algorithm.SortUtil; #AnSjl  
YU"\Wd[  
/** B{i;+[ase  
* @author treeroot @Sd:]h:f-  
* @since 2006-2-2 4sgwQ$m)  
* @version 1.0 u:kY4T+Z  
*/ kEDZqUD  
public class ImprovedQuickSort implements SortUtil.Sort { L|'ME| '  
9&FV =}MO  
private static int MAX_STACK_SIZE=4096; ,TA [el%#  
private static int THRESHOLD=10; j`pR;XL1[  
/* (non-Javadoc) i*E`<9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ee?ZkU#@  
*/ %*; 8m'  
public void sort(int[] data) { c|a|z}(/J  
int[] stack=new int[MAX_STACK_SIZE]; `lOoT  
Xr;noV-X  
int top=-1; KPcuGJ  
int pivot; r6_a%A*  
int pivotIndex,l,r; =_:L wmI  
6M|%nBN$|  
stack[++top]=0; c<x6_H6[8  
stack[++top]=data.length-1; vrDRSc6_  
< tq9  
while(top>0){ -k{R<L  
int j=stack[top--]; W5uI(rS<6  
int i=stack[top--]; lfG's'U-z  
Hmd:>_[f  
pivotIndex=(i+j)/2; +W4g:bB1  
pivot=data[pivotIndex]; }&hgedx  
"x^bl+_"  
SortUtil.swap(data,pivotIndex,j); zUu>kJZ  
-+Dvyr  
file://partition W"@lFUi  
l=i-1; F<WX\q  
r=j; a[rUU'8  
do{ HwK "qq-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); / kGX 6hh  
SortUtil.swap(data,l,r); UL"3skV   
} ]997`,1b  
while(l SortUtil.swap(data,l,r); K9Fnb6J$u  
SortUtil.swap(data,l,j); LK5H~FK  
a];g  
if((l-i)>THRESHOLD){ :*nBo  
stack[++top]=i; *s4!;2ZhsU  
stack[++top]=l-1; =^M t#h."  
} : seL=  
if((j-l)>THRESHOLD){ Z9^$jw]  
stack[++top]=l+1; B K;w!]  
stack[++top]=j; dG$0d_Pq  
} .NC}TFN|  
%lmRe(M  
} wpI4P:  
file://new InsertSort().sort(data); 7rg[5hP T  
insertSort(data); g3rFJc  
} 3dphS ^X  
/** 7T Bo*-!  
* @param data cyE2=  
*/ C^tC} n1D(  
private void insertSort(int[] data) { _4]dPk#^  
int temp; l d9#4D[#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pwC/&bu  
} l[|e3<H  
} mjHY-lK  
} AUV$ S2  
d2C:3-4  
} d(Ou\7  
UQ~rVUo.c  
归并排序: =h;!#ZC  
Q(3x"+  
package org.rut.util.algorithm.support; YPEd XU8}  
es]m 6A  
import org.rut.util.algorithm.SortUtil; <`qo*__1  
Fgk/Ph3r  
/** %"2B1^o>  
* @author treeroot lhTbgM  
* @since 2006-2-2 _F E F+I  
* @version 1.0 uSjMqfK  
*/ X_F=;XF/  
public class MergeSort implements SortUtil.Sort{ mY( _-[W  
cf'Z#NfQ  
/* (non-Javadoc) ?Gfe?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V:J6eks_  
*/ Us5 JnP5  
public void sort(int[] data) { sSK$  
int[] temp=new int[data.length]; 8msDJ {,X  
mergeSort(data,temp,0,data.length-1); t79MBgZ  
} U?{j  
O=/Tx2i;  
private void mergeSort(int[] data,int[] temp,int l,int r){ )Cl&"bX  
int mid=(l+r)/2; Vba}RF[b  
if(l==r) return ; rl=_ "sd=  
mergeSort(data,temp,l,mid); @~ L.m}GF  
mergeSort(data,temp,mid+1,r); Y."[k&P-  
for(int i=l;i<=r;i++){ |O?Aj1g[c?  
temp=data; dr o42#$Mo  
} )f rtvN7  
int i1=l; A9gl|II  
int i2=mid+1; iz(+(M  
for(int cur=l;cur<=r;cur++){ '3VrHL@@g  
if(i1==mid+1) 9E+lriyY  
data[cur]=temp[i2++]; uzsN#'7=  
else if(i2>r) ;4IP7$3G  
data[cur]=temp[i1++]; c[$oR,2b13  
else if(temp[i1] data[cur]=temp[i1++]; L\[jafb_`  
else =Yk$Q\c  
data[cur]=temp[i2++]; j@2 hI,+  
} FzIA>njt  
} &Te:l-x  
0l6%[U?o  
} ]Y?$[+Y  
4`F*] Ft  
改进后的归并排序: C*!_. <b  
.Yx. Lm}  
package org.rut.util.algorithm.support; 5UbVg  
W>y_q  
import org.rut.util.algorithm.SortUtil; KI{u:Lbi  
hl+Yr)0\  
/** 5 \J;EWTU  
* @author treeroot oSoG&4  
* @since 2006-2-2 K\q/JuDfc  
* @version 1.0 4hs4W,2!  
*/ SccU @3.X~  
public class ImprovedMergeSort implements SortUtil.Sort { ?*;zS%93U9  
49m/UeNZ  
private static final int THRESHOLD = 10; GFid riC  
F t}tIP7  
/* j; C(:6#J  
* (non-Javadoc) I}=}S"v  
* Q8n?7JB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UPC& O  
*/ K&*FI (a  
public void sort(int[] data) { 1jyWP#M#  
int[] temp=new int[data.length]; r4sR5p]|  
mergeSort(data,temp,0,data.length-1); 8z-Td-R6  
} 83a Rq&(R  
u=[oo @Rk`  
private void mergeSort(int[] data, int[] temp, int l, int r) { (2(hl-- 'n  
int i, j, k; h:;~)={"X  
int mid = (l + r) / 2; Ub$$wOsf  
if (l == r) h4#5j'RO  
return; vIJdl2(^E  
if ((mid - l) >= THRESHOLD) -*EJj>x  
mergeSort(data, temp, l, mid); 1\p[mN  
else zSO[f  
insertSort(data, l, mid - l + 1); ZS-9|EA<  
if ((r - mid) > THRESHOLD) |&JL6hN  
mergeSort(data, temp, mid + 1, r); i469<^A  
else f19 i !  
insertSort(data, mid + 1, r - mid); SYL$ ?kl  
UnPSJ]VW  
for (i = l; i <= mid; i++) { "J9+~)e^!  
temp = data; SXL6)pX  
} KK+Mxoj,  
for (j = 1; j <= r - mid; j++) { 0-9&d(L1g  
temp[r - j + 1] = data[j + mid]; s$en5)  
} /t$rX3A  
int a = temp[l];  &|/vM.  
int b = temp[r]; w>v5oy8s-  
for (i = l, j = r, k = l; k <= r; k++) { D35m5+=I  
if (a < b) { TRSOO}  
data[k] = temp[i++]; h^['rmd  
a = temp; ;rNd701p"  
} else { ` !zQ  
data[k] = temp[j--]; n)tU9@4Np  
b = temp[j]; ;JAK[o8i  
} i B%XBR  
} dj3|f{kg{  
} &K06}[J  
j?=VtVP  
/** H9sZR>(^  
* @param data $ b4*/vMr  
* @param l cE^kpnVq|<  
* @param i n49;Z,[~  
*/ ?x:m;z/  
private void insertSort(int[] data, int start, int len) { _i-\mR_~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k& OC&  
} l<$rqz3D  
} D`V6&_. p  
} +z+ F-  
} !{ $qMhT  
mRwXN*Izw  
堆排序: sjSi;S4  
]t*33  
package org.rut.util.algorithm.support; '-`O. 4u  
|drf"lX<{  
import org.rut.util.algorithm.SortUtil; R'Sa?6xS4  
R_maNfS]Z  
/** 1d`cTaQ-  
* @author treeroot K-Re"zsz  
* @since 2006-2-2 8098y,mQe  
* @version 1.0 bi+9R-=&  
*/ KCE=|*6::|  
public class HeapSort implements SortUtil.Sort{ HB%K|&!+  
QQ*gFP.Ao  
/* (non-Javadoc) 6j_ 678  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B i'd5B5  
*/ {&E?<D2_&  
public void sort(int[] data) { wc"9A~  
MaxHeap h=new MaxHeap(); E\ tL   
h.init(data); Z?-;.G*  
for(int i=0;i h.remove(); [9LxhPi  
System.arraycopy(h.queue,1,data,0,data.length); 8IeI0f"l)  
} '[%jjUU  
B<Ol+)@,}  
private static class MaxHeap{ qbH %Hx  
U4]30B{;H  
void init(int[] data){ I<sfN'FpT  
this.queue=new int[data.length+1]; TFo}\B7  
for(int i=0;i queue[++size]=data; )GK+  
fixUp(size); lBS"3s384  
} g#w`J \iz  
} s} s|~  
k<!<<,Z  
private int size=0; )u<eO FI+  
lHcA j{6  
private int[] queue; <&`:&7  
JT}.F!q6E  
public int get() { xg?auje  
return queue[1]; }*h47t}  
} V- /YNRV  
kY=rz&?U  
public void remove() { }4Zkf<#7$  
SortUtil.swap(queue,1,size--); f`,-b  
fixDown(1); 2R\+}  
} 7"#f!.E  
file://fixdown lVP |W:~K  
private void fixDown(int k) { &m'?*O |  
int j; v_.HGG S  
while ((j = k << 1) <= size) { 0JK2%%  
if (j < size %26amp;%26amp; queue[j] j++; +N7"EROc  
if (queue[k]>queue[j]) file://不用交换 w~]T<^fW~  
break; @' d6iYk_  
SortUtil.swap(queue,j,k); "sD1T3!\)Q  
k = j; )Z("O[  
} p=H3Q?HJ}  
} s"q=2i  
private void fixUp(int k) { d @m\f  
while (k > 1) { bf1)M>g,O  
int j = k >> 1; 7 I@";d8~  
if (queue[j]>queue[k]) G?R_aPP  
break; ,[Ag~.T  
SortUtil.swap(queue,j,k); 1& |  
k = j; P8<hvMF  
} f9a$$nb3`  
} RtwUb(wn6  
|U EC  
} "-P/jk  
f}2;N  
} Je 31".  
Od-Ax+Hp  
SortUtil: W tVf wC_  
fgmSgG"b  
package org.rut.util.algorithm; Dm^l?Z  
#~S>K3(  
import org.rut.util.algorithm.support.BubbleSort; 6Kp}_^|z  
import org.rut.util.algorithm.support.HeapSort; Ev{MCu1!6  
import org.rut.util.algorithm.support.ImprovedMergeSort; ] opto  
import org.rut.util.algorithm.support.ImprovedQuickSort; &atyDFJ'  
import org.rut.util.algorithm.support.InsertSort; Q(e{~ ]*  
import org.rut.util.algorithm.support.MergeSort; (xu=%  
import org.rut.util.algorithm.support.QuickSort; eIJ[0c b}  
import org.rut.util.algorithm.support.SelectionSort; |kc@L`7s  
import org.rut.util.algorithm.support.ShellSort; Wxn#Rk#>  
JCD?qeTg  
/** Z%OW5]q  
* @author treeroot b)`pZiQP  
* @since 2006-2-2 >Mw'eQ0(y  
* @version 1.0 }vY.EEy!  
*/ t!:)L+$3  
public class SortUtil { o0l7 4  
public final static int INSERT = 1; yPN+W8}f  
public final static int BUBBLE = 2; "Vy WT  
public final static int SELECTION = 3; l sr?b  
public final static int SHELL = 4; +(&|uq^  
public final static int QUICK = 5; XhN{S]Wn  
public final static int IMPROVED_QUICK = 6; </=3g>9Z  
public final static int MERGE = 7; 5{X*a  
public final static int IMPROVED_MERGE = 8; IJ_ m  
public final static int HEAP = 9; m]P/if7  
d8o ewkiR  
public static void sort(int[] data) { M*(H)i;s:w  
sort(data, IMPROVED_QUICK); \7 Gz\=\LR  
} 1O0X-C,wo$  
private static String[] name={ 8#l+{`$z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /?P!.!W&  
}; K{2h9 ]VF  
#)]E8=}  
private static Sort[] impl=new Sort[]{ j8a[ (  
new InsertSort(), g YUTt  
new BubbleSort(), 7 >bMzdH  
new SelectionSort(), $w/E9EJ)3A  
new ShellSort(), mX;H((  
new QuickSort(), Cfv]VQQE  
new ImprovedQuickSort(), En\Z#0,V  
new MergeSort(), 8k H<$9  
new ImprovedMergeSort(), 3+V#[JBJv  
new HeapSort() `[Sl1saZ$S  
}; $@.jZ_G  
i ?-Y  
public static String toString(int algorithm){ =?/&u<  
return name[algorithm-1]; ISBF\ wQY  
} (:7a&2/M  
!^?qU;|  
public static void sort(int[] data, int algorithm) { RG1\=J$:E  
impl[algorithm-1].sort(data); CmHyAw(  
} `{o$F ::(  
RG}}Oh="v  
public static interface Sort { ,H{={aln  
public void sort(int[] data); d}+W"j;  
} QNpu TZn#Q  
bLlH//ZRH  
public static void swap(int[] data, int i, int j) { (NaK3_  
int temp = data; 7&|6KN}c  
data = data[j]; <u0,Fp  
data[j] = temp; eGvOA\y:  
} :tbd,Uo  
} 2(+P[(N1,  
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