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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。 'GEBxNH:  
插入排序: U}tl_5%)  
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package org.rut.util.algorithm.support; "rme~w Di  
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import org.rut.util.algorithm.SortUtil; Ys"|</;dbj  
/** ,vY)n6  
* @author treeroot B<|:K\MA  
* @since 2006-2-2 .ocx(_3G  
* @version 1.0 2Pbe~[  
*/ Q)x?B]b-  
public class InsertSort implements SortUtil.Sort{ w{k1Y+1  
1a7!4)\  
/* (non-Javadoc) AddGB^7yl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ni+3b  
*/ I#"t'=9H  
public void sort(int[] data) { L8K0^~Mk  
int temp; 4` '8fe/"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |HrM_h<X  
} 'M~BE\  
} Ze-MAt  
} NJn&>/vM  
aQ(`6DQv  
} Z} c'Bm(  
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冒泡排序: Hu<p?mF#  
BX@pt;$ek7  
package org.rut.util.algorithm.support; q>^hoW2$C  
@bY('gC,  
import org.rut.util.algorithm.SortUtil; @O@fyAz  
{SF[I  
/** sCVI 2S!L  
* @author treeroot ;*y|8od B  
* @since 2006-2-2 RXGHD19]  
* @version 1.0 6!ZVd#OM%  
*/ \.c]kG>k-  
public class BubbleSort implements SortUtil.Sort{ M6J/mOVx5  
zL9VR;q  
/* (non-Javadoc) ~}h^38  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~_'0]P\  
*/ -@rxiC:Q  
public void sort(int[] data) { ?Q@L-H`  
int temp; `'u Umyg  
for(int i=0;i for(int j=data.length-1;j>i;j--){ D,MyI#  
if(data[j] SortUtil.swap(data,j,j-1); Ej' 7h~=v  
} yc*<:(p  
} =g@R%NDNV  
} 6^Ph '  
} BEln6zj  
bFSlf5*H  
} pFpZbU^  
(Up'$J}  
选择排序: L{=l#vu  
N;<//,  
package org.rut.util.algorithm.support; <D;MT96SG  
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import org.rut.util.algorithm.SortUtil; [#0Yt/G  
h}avX*Lx_  
/** WE")xhV6  
* @author treeroot )%s +?  
* @since 2006-2-2 B#]_8svO  
* @version 1.0 tVunh3-  
*/ :y\09)CJK  
public class SelectionSort implements SortUtil.Sort { S."7+g7Ar  
I0DM=V>;  
/* hm3jpWi 8  
* (non-Javadoc) Id %_{),HX  
* }&1Iyb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *wwhZe4V  
*/ y?>#t^  
public void sort(int[] data) { 27>a#vCT  
int temp; co/7lsW  
for (int i = 0; i < data.length; i++) { =N_,l'U\^  
int lowIndex = i; ob'n{T+lZ  
for (int j = data.length - 1; j > i; j--) { *xcP`  
if (data[j] < data[lowIndex]) { ;W0]66&  
lowIndex = j; \OcMiuw  
} H>?F8R_iq  
} 7IW> >RBF  
SortUtil.swap(data,i,lowIndex); Y;,Hzmbs6w  
} a\pi(9R  
} %fv)7 CRM  
/&h+t^l_Qj  
} -u|l}}bh  
-l "U"U"F  
Shell排序: 0O~p7D  
 5@ foxI  
package org.rut.util.algorithm.support; :M j_2  
kM!V .e[g  
import org.rut.util.algorithm.SortUtil; 8%[HYgd5)  
B;!f<"a8  
/** +yWR#[`n  
* @author treeroot cn%2OP:L^  
* @since 2006-2-2 Sj)}qM-y#  
* @version 1.0 [Uli>/%JB  
*/ b{RqwV5P  
public class ShellSort implements SortUtil.Sort{ fYBH)E  
bD<qNqX$  
/* (non-Javadoc) ,-'4L9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6e.v&f7(  
*/ [9V]On  
public void sort(int[] data) { F}U5d^!2  
for(int i=data.length/2;i>2;i/=2){ #dc1pfL!y{  
for(int j=0;j insertSort(data,j,i); )p8I @E  
} B,_`btJh  
} t\r:E2 O  
insertSort(data,0,1);   \&a.}t  
} %jEY 3q  
<tbZj=*O/o  
/** i"HgvBHx  
* @param data WA.AFt  
* @param j aV>aiR=  
* @param i .0|=[|  
*/ RH(V^09[o  
private void insertSort(int[] data, int start, int inc) { [;KmT{I9  
int temp; z<pJYpxH  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \cQ .|S  
} R#(G%66   
} VXm[-  
} Bf]$X>d  
q* !3C  
} K>1X}ZMdD(  
@(:v_l  
快速排序: hVP IHQt  
alm- r-Kb3  
package org.rut.util.algorithm.support; 8$vK5Dnn8  
`qiQ$kz  
import org.rut.util.algorithm.SortUtil; gUVn;_  
+l?; )  
/** 9`"DFFSMS  
* @author treeroot f: xWu-  
* @since 2006-2-2 dvjTyX  
* @version 1.0 *8)2iv4[  
*/ W f@t4(i  
public class QuickSort implements SortUtil.Sort{ a3@w|KLt  
lj2=._@R  
/* (non-Javadoc) 1f4 bt6[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;/LD)$_  
*/ IfV  3fJ7  
public void sort(int[] data) { kWL.ewTiex  
quickSort(data,0,data.length-1); GBP-V66  
} ._ CP% R  
private void quickSort(int[] data,int i,int j){ ?4[H]BK  
int pivotIndex=(i+j)/2; :\yc*OtX  
file://swap V U~Dk);Bv  
SortUtil.swap(data,pivotIndex,j); ]Kde t"+  
Ip?]K*sq  
int k=partition(data,i-1,j,data[j]); op7FZHs  
SortUtil.swap(data,k,j); UG2w 1xqHw  
if((k-i)>1) quickSort(data,i,k-1); vR>o}%`  
if((j-k)>1) quickSort(data,k+1,j); z`$J_CjY  
H4<Nnd\   
} C!%:o/  
/** ;sPzOS9  
* @param data XU-m"_t  
* @param i K:r\{#9  
* @param j 8`v$liH  
* @return H?yE3 w  
*/ bAF )Bli  
private int partition(int[] data, int l, int r,int pivot) { i0pU!`0  
do{ Tby,J B^U  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~}%~oT  
SortUtil.swap(data,l,r); ?m;;D'1j  
} hu5!ev2  
while(l SortUtil.swap(data,l,r); A^Cj1:,  
return l; 2KI!af[I  
} v{;7LXy0  
RL}KAGK  
} HDIk9WC^  
Z=+03  
改进后的快速排序: NZXjE$<Vr  
Lz4eh WntO  
package org.rut.util.algorithm.support; Bw< rp-  
Z1,gtl ?  
import org.rut.util.algorithm.SortUtil; Hs0pW5oZ  
>q7 %UK]&  
/** 68t}w^=  
* @author treeroot j+^L~, S  
* @since 2006-2-2 )\ 0F7Z  
* @version 1.0 H{fM%*w  
*/ !3}deY8;#  
public class ImprovedQuickSort implements SortUtil.Sort { (P@Y36j>N  
or?%-)  
private static int MAX_STACK_SIZE=4096; 85]SC$  
private static int THRESHOLD=10; k%Vv?{g  
/* (non-Javadoc) 6yIvaY$KR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n2ndjE$  
*/ fCUT[d+H  
public void sort(int[] data) { [Ot,q/hBJ  
int[] stack=new int[MAX_STACK_SIZE]; 3]LN;s]ac  
JW+*d`8Z[  
int top=-1; (> "QVxr  
int pivot; ^toAw8A=@0  
int pivotIndex,l,r; ZX.TqvK/r  
XZph%j0o  
stack[++top]=0; 8^yJqAXK  
stack[++top]=data.length-1; .y4&rF$n  
?nFO:N<  
while(top>0){ "mIgs9l$  
int j=stack[top--]; B BL485`  
int i=stack[top--]; pGWA\}'  
N{joXHCu  
pivotIndex=(i+j)/2; .;I29yk\XS  
pivot=data[pivotIndex]; ;;&F1@3tBa  
y?z\L   
SortUtil.swap(data,pivotIndex,j); \0*l,i1&  
XGs^rIf  
file://partition x:z0EYL  
l=i-1; x8[MP?Wz  
r=j; =dH$2W)G  
do{ Z=$  T1|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); QT!5l`  
SortUtil.swap(data,l,r); jNl/!l7B  
} x8N|($1  
while(l SortUtil.swap(data,l,r); pR$6,Vi  
SortUtil.swap(data,l,j); }E&NPp>  
>SI<rR[~%  
if((l-i)>THRESHOLD){ e>H:/24  
stack[++top]=i; r|R7- HI  
stack[++top]=l-1; :#X[%"g.  
} 8L{u}|{  
if((j-l)>THRESHOLD){ h/ep`-YaH  
stack[++top]=l+1; Je7RrCz  
stack[++top]=j; I4e+$bU3  
}  t@B(+  
mh` |=M]8E  
} gA^q^>7  
file://new InsertSort().sort(data); 8b&uU [  
insertSort(data); ,Ww  
} cvo[s, p  
/** I3y9:4  
* @param data ]qktj=p  
*/ l\Ftr_Dk  
private void insertSort(int[] data) { Wd 2sh  
int temp; XB\zkf_}Xc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6Z! y  
} 'ZHdV,dd  
} p+w8$8)  
} T[uDZYx  
O.+9,4A(  
} "^rNr_  
wyY*:{lZ  
归并排序: o'= VZT9  
4u1KF:g  
package org.rut.util.algorithm.support; isK;mU?<  
%u!XzdG  
import org.rut.util.algorithm.SortUtil; $:vkX   
QZYU0; VF  
/** *Xr$/N  
* @author treeroot &7[[h+Lb  
* @since 2006-2-2 =nRuY '  
* @version 1.0 }C#3O{5  
*/ ?p^2Z6J'$  
public class MergeSort implements SortUtil.Sort{ 8tc*.H{^+  
%'ZN`XftG  
/* (non-Javadoc) y\PxR708  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;A#~` P  
*/ :)c80`-E  
public void sort(int[] data) { cf;Ht^M\  
int[] temp=new int[data.length]; 9){  
mergeSort(data,temp,0,data.length-1); $kz!zjC'  
} _<Dt z  
(JZ".En#X  
private void mergeSort(int[] data,int[] temp,int l,int r){ Zhi})d3l  
int mid=(l+r)/2; U}AX0*S  
if(l==r) return ; F[E? A95W  
mergeSort(data,temp,l,mid); %$mjJw<|&  
mergeSort(data,temp,mid+1,r); kBsXfVs9  
for(int i=l;i<=r;i++){ 49h0^;xlo:  
temp=data; ef]B9J~h  
} w6zB Vi  
int i1=l; ?U9/fl  
int i2=mid+1; ?[= U%sPu=  
for(int cur=l;cur<=r;cur++){ ;u!?QSvb  
if(i1==mid+1) r0\f;q  
data[cur]=temp[i2++]; ImkrV{,e  
else if(i2>r) oY3>UZ5\  
data[cur]=temp[i1++]; 8T5k-HwE  
else if(temp[i1] data[cur]=temp[i1++]; Y1\K;;X  
else {B{i(6C(  
data[cur]=temp[i2++]; j\2[H^   
} `gguip-C  
} C{m&}g`  
Cvn$]bt/s  
} IN!02`H  
OyVm(%Z   
改进后的归并排序: b X,Siz:F  
2*OxA%QELM  
package org.rut.util.algorithm.support; 8z T0_vw  
5h^[^*A?  
import org.rut.util.algorithm.SortUtil; ti_u!kNv  
!#WqA9<  
/** +zO]N&  
* @author treeroot .Q\\dESn"  
* @since 2006-2-2 ZBM!MSf:  
* @version 1.0 'mV:@].le  
*/ q627<  
public class ImprovedMergeSort implements SortUtil.Sort { e}"wL g]  
J r*"V`  
private static final int THRESHOLD = 10; A 7Y_HIo  
P. V\ov7m2  
/* .6T4z7I  
* (non-Javadoc) 8pe0$r`b  
* uxDLDA$;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a$}6:E  
*/ "tR}j,=S:D  
public void sort(int[] data) { 9k>uRV6  
int[] temp=new int[data.length]; |]ucHV  
mergeSort(data,temp,0,data.length-1); )f*Iomp]@  
} h~UJCn zS  
<GfVMD  
private void mergeSort(int[] data, int[] temp, int l, int r) { a%J /0'(d  
int i, j, k; ?qT(3C9p  
int mid = (l + r) / 2; !J^tg2M8:  
if (l == r) *cNk>y  
return; fusPMf *[  
if ((mid - l) >= THRESHOLD)  W"qL-KW  
mergeSort(data, temp, l, mid); O E|+R4M  
else B,y3] g6u  
insertSort(data, l, mid - l + 1); 3$_2weZxYn  
if ((r - mid) > THRESHOLD) UR:n5V4  
mergeSort(data, temp, mid + 1, r); 0wvU?z%WK  
else JDhwN<0R  
insertSort(data, mid + 1, r - mid); 9d\N[[Vu]R  
L82NP)St  
for (i = l; i <= mid; i++) { x# 8IZ  
temp = data; h48 bb.p2  
} E .;io*0  
for (j = 1; j <= r - mid; j++) { F#1kZ@nq  
temp[r - j + 1] = data[j + mid]; Oz>io\P94  
} ^!uO(B&  
int a = temp[l]; 2"M_sL  
int b = temp[r]; .^H1\p];Lw  
for (i = l, j = r, k = l; k <= r; k++) { @ ;J|xkJ  
if (a < b) { #313 (PWH  
data[k] = temp[i++]; JtmQzr0>  
a = temp; ?>?ZAr  
} else { _85E=  
data[k] = temp[j--]; viV-e$s`.  
b = temp[j]; P^4'|#~2T  
} =|JKu'  
} gA+YtU{z  
} uI9lK  
X[{\ 3Av  
/** h/=-tr  
* @param data Xz* tbW#  
* @param l 0UjyMEiK  
* @param i 9|a)sb7/  
*/ *1v_6<;2i<  
private void insertSort(int[] data, int start, int len) { v>k b^38  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6`j<l5-h  
} yu_gNro L  
} +/_!P;I  
} 4 Q&mC"  
} opnkmM&[  
1gAc,s2  
堆排序: z1qUz7  
3G(skphE  
package org.rut.util.algorithm.support; ZjavD^ky  
HnK/A0jM  
import org.rut.util.algorithm.SortUtil; dw99FA6  
!Iko0#4i  
/**  p1?J  
* @author treeroot LVWxd}0  
* @since 2006-2-2 yOM -;h  
* @version 1.0 h!~|6nj  
*/ p+5#dbyr  
public class HeapSort implements SortUtil.Sort{ +E `063  
[L)V(o)v  
/* (non-Javadoc) Z%A<#%    
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Zh8 QI+  
*/ Y~x`6  
public void sort(int[] data) { Wd1 IX^7C%  
MaxHeap h=new MaxHeap(); tUn&z?7bF  
h.init(data); 5 u"nxT   
for(int i=0;i h.remove(); R+x%r&L5F  
System.arraycopy(h.queue,1,data,0,data.length); '> 4+WZ1w5  
} +-",2 d+g  
:az!H"4W/  
private static class MaxHeap{ ?n73J wH  
a6OrE*x:D  
void init(int[] data){ 7dsnv)(v  
this.queue=new int[data.length+1]; wsna5D6i  
for(int i=0;i queue[++size]=data; L5TNsLx(  
fixUp(size); '1qAZkz  
} fCs\Q  
} Ds;Rb6WcnY  
uk`d,xF   
private int size=0; :v''"+\  
)lE3GDAPgZ  
private int[] queue; j(UX 6lR  
Zu)i+GeG  
public int get() { 6Lav.x\W  
return queue[1]; )3+xsnv  
} m]  EDuW  
aJ% e'F[  
public void remove() { R,fMZHAG  
SortUtil.swap(queue,1,size--); ?%_]rr9  
fixDown(1); [%7IQ4`{  
} 60(}_%  
file://fixdown 8UjCX[v  
private void fixDown(int k) { t Qp* '  
int j; xu0;a  
while ((j = k << 1) <= size) { Y+}OClS  
if (j < size %26amp;%26amp; queue[j] j++; !#l0@3  
if (queue[k]>queue[j]) file://不用交换 ;e`D#khB  
break; VuP#b'g=|]  
SortUtil.swap(queue,j,k); }D8~^   
k = j; q\-xg*'  
} *_}IeNc  
} LS*{]@8q  
private void fixUp(int k) { Sj,4=a  
while (k > 1) { V;/ XG}M  
int j = k >> 1; w;z@py  
if (queue[j]>queue[k]) WXRHG)nvL  
break; {[H4G,QK  
SortUtil.swap(queue,j,k); ~x76{.gT  
k = j; Q'>_59  
} #mi0x06  
} 5)/4)0  
WW,r9D:/  
} Q#d+IIR0gK  
x`/m>~_  
} z|oA{VxW>  
<yX@@8  
SortUtil: q(w1VcLZ  
q[Sp|C6x  
package org.rut.util.algorithm; Q{(,/}kA-  
'_Hb}'sFI  
import org.rut.util.algorithm.support.BubbleSort; 64IeCAMVo  
import org.rut.util.algorithm.support.HeapSort; }V93~>  
import org.rut.util.algorithm.support.ImprovedMergeSort; XPR:_  
import org.rut.util.algorithm.support.ImprovedQuickSort; [:/7OM  
import org.rut.util.algorithm.support.InsertSort; &@`H^8  
import org.rut.util.algorithm.support.MergeSort; 3P=Eb!qtdD  
import org.rut.util.algorithm.support.QuickSort; ba8-XA_~U  
import org.rut.util.algorithm.support.SelectionSort; =1uj1.h  
import org.rut.util.algorithm.support.ShellSort; )dzjz%B)  
q? gQ  
/** *NX*/(Q  
* @author treeroot *$*nY [/5  
* @since 2006-2-2 iq[2H$  
* @version 1.0 o} bj!h]N  
*/ #I*ht0++  
public class SortUtil { q=j/s4~  
public final static int INSERT = 1; SWe!9Y$  
public final static int BUBBLE = 2; 7,&3=R <  
public final static int SELECTION = 3; z}Mb4{d1  
public final static int SHELL = 4; '/ ]fZ|  
public final static int QUICK = 5; 4)c"@Zf  
public final static int IMPROVED_QUICK = 6; 0t/z "  
public final static int MERGE = 7; %te'J G<  
public final static int IMPROVED_MERGE = 8; l[x`*+ON:2  
public final static int HEAP = 9; 1^Y:XJ73  
,vHX>)M|  
public static void sort(int[] data) { yA`]%U((  
sort(data, IMPROVED_QUICK); yx`r;|ds}  
} ]#WX|0''^  
private static String[] name={ Hme@9(zD.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SFm.<^6  
}; z!uB&2C{k  
`G:qtHn"Q<  
private static Sort[] impl=new Sort[]{ ?_<UOb*  
new InsertSort(), X/?h!Y}  
new BubbleSort(),  ]pucv!  
new SelectionSort(), jv?aB   
new ShellSort(), k6 h^  
new QuickSort(), 1v8:,!C  
new ImprovedQuickSort(), dBi3ZC AF  
new MergeSort(), S+bWD7  
new ImprovedMergeSort(), /Va&k4  
new HeapSort() SgQmYaa&  
}; LI5cUCl  
^ZViQ$a"h;  
public static String toString(int algorithm){ Z<m'he  
return name[algorithm-1]; "}y3@ M^  
} ybuSqFy`$  
/ F  
public static void sort(int[] data, int algorithm) { |M{,}.*CU  
impl[algorithm-1].sort(data); ysw6hVb  
} ?X5glDZ$  
$SD@D6`lL  
public static interface Sort { ~{]m8a/ `6  
public void sort(int[] data); 28ov+s~1+-  
} V'BZ=.=  
^.$r1/U  
public static void swap(int[] data, int i, int j) { @kgpq  
int temp = data; JOoLHZQ1v  
data = data[j]; ;*$8iwBQ_  
data[j] = temp; ef1N#z%gt  
} crOtQ  
} <@;xV_`X+  
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