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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。 WLkfo6Nw  
插入排序: k0^t$J W  
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package org.rut.util.algorithm.support; vZJu =t  
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import org.rut.util.algorithm.SortUtil; *ud/'HR8]  
/** t8_i[Hw6D  
* @author treeroot )~LqBh  
* @since 2006-2-2 >9i%Yuy](  
* @version 1.0 l/6$BP U`  
*/ e]k\dj;,^%  
public class InsertSort implements SortUtil.Sort{ ,E3Ze*(U  
^EF VjGM  
/* (non-Javadoc) fB"It~ p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <]wQ;14;H  
*/ FesUE_L2$  
public void sort(int[] data) { <[Y@<  
int temp; 4E 32DG*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <C{uodFll  
} dR@XwEpP  
} bb}$7v`G  
} 7:$zSj# y  
&++tp5  
} FL?Ndy"I  
2}xvM"k=k  
冒泡排序: Wa!}$q+  
\yKYBfp-p  
package org.rut.util.algorithm.support; ?j|i|WUD  
+ )lkHv$R  
import org.rut.util.algorithm.SortUtil; jx[g;7~X  
,/Usyb,`  
/** m!LJK`gA  
* @author treeroot Zv^n  
* @since 2006-2-2 =}wqo6Bn|  
* @version 1.0 \VAm4   
*/ ee\xj$,  
public class BubbleSort implements SortUtil.Sort{ f*E#E=j  
gt|:K)[,6  
/* (non-Javadoc) YX{c06BHs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E*G {V j  
*/ ?f&O4H  
public void sort(int[] data) { gv}J"anD  
int temp; }Jm~b9j  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %z "${ zw  
if(data[j] SortUtil.swap(data,j,j-1); SsfHp  
} 7j~}M(s"  
} &{z RuF  
} i{2ny$55h  
} P`TJqJiY~  
JS#AoPWA  
} G/y;o3/[Z  
E;-*LT&{  
选择排序: >^ TcO  
{}DoRp q=  
package org.rut.util.algorithm.support; :{'%I#k2  
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import org.rut.util.algorithm.SortUtil; 7L !$hk  
;+(EmD:Q  
/** fZNe[|  
* @author treeroot k#DMd9  
* @since 2006-2-2 l0nm>ps'D  
* @version 1.0 _,bDv`>Ra  
*/ s MNhD/bb  
public class SelectionSort implements SortUtil.Sort { G-Dc(QhU&  
b 67l\L  
/* l,@rB+u  
* (non-Javadoc) #Zj3SfU~`  
* %pBc]n@_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2e| m3  
*/ 'wd&O03&  
public void sort(int[] data) { ~Hb2-V  
int temp; kmur={IR  
for (int i = 0; i < data.length; i++) { @;`d\lQ  
int lowIndex = i; "[`/J?W  
for (int j = data.length - 1; j > i; j--) { 2!Sl!x+i\'  
if (data[j] < data[lowIndex]) { Y"UB\_=  
lowIndex = j; (K`@OwD  
} K(75)/  
} X6G2$|  
SortUtil.swap(data,i,lowIndex); }[b3$WZ  
} qj:\ )#I  
} A40Q~X  
R>y/Y<5=  
} H*E4+3y  
..;ep2jSs  
Shell排序: 1;"DIsz@d  
zY2o;-d|4  
package org.rut.util.algorithm.support; cg).b?g  
&at>sQ'  
import org.rut.util.algorithm.SortUtil; |DkK7gw  
M&J$9X  
/** 'h3yxf}\  
* @author treeroot u`Abko<D  
* @since 2006-2-2 ':#DROe!  
* @version 1.0 :)DvZxHE@  
*/ ZIs=%6""&  
public class ShellSort implements SortUtil.Sort{ Apbgm[m|{  
kj/v$m  
/* (non-Javadoc) >bbvQb +j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P&5kO;ia  
*/ Yx':~  
public void sort(int[] data) { nNpXkI:  
for(int i=data.length/2;i>2;i/=2){ 't n-o  
for(int j=0;j insertSort(data,j,i); UoOxGo  
} <RJ+f-  
} (,;4f7\  
insertSort(data,0,1); /j"aOLL|  
} x9i^ _3Z  
TxvvCV^  
/** 6L,"gF<n  
* @param data s7"5NU-  
* @param j s}g3*_"  
* @param i tf4clzSTa  
*/ ]:}x 4O#  
private void insertSort(int[] data, int start, int inc) { 6oy[0hj  
int temp; /0(c-Dv  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BNq6dz$J  
} ;X%8I$Ba,  
} C8AR ^F W  
} .Zm de*b  
*^i"q\n5(  
} 1HBWOV7z.?  
bEB9J- Q  
快速排序: +O!4~k^  
8 Az|SJ<  
package org.rut.util.algorithm.support; {Y1&GO;  
I]6,hygs  
import org.rut.util.algorithm.SortUtil; a Juv{  
@Zw[LIQ*  
/** mu$rG3M  
* @author treeroot fR#W#n#m  
* @since 2006-2-2 6wH:jd9,  
* @version 1.0 U$ Od)  
*/ |u_fVQj  
public class QuickSort implements SortUtil.Sort{ H?wf%0  
LX{mr{  
/* (non-Javadoc) ui<Mnm_T;d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Ny^-4-N  
*/ Ib2n Bg>j  
public void sort(int[] data) { Sv t%*j  
quickSort(data,0,data.length-1); j026CVL  
} C=x70Y/  
private void quickSort(int[] data,int i,int j){ +c' n,O~3  
int pivotIndex=(i+j)/2; &?Z<"+B8S  
file://swap ', P_a,\  
SortUtil.swap(data,pivotIndex,j); z LZ HVvL3  
" 1%\Fil  
int k=partition(data,i-1,j,data[j]); 8u7QF4 Id  
SortUtil.swap(data,k,j); ?\_vqW  
if((k-i)>1) quickSort(data,i,k-1); (g0U v.*  
if((j-k)>1) quickSort(data,k+1,j); =kjD ]+l  
K&BaGrR  
} N9 TM  
/** :;KQ]<  
* @param data #@m6ag.  
* @param i qJ[wVNHh!  
* @param j bKk7w#y  
* @return CPcB17!  
*/ ";TqYk=-  
private int partition(int[] data, int l, int r,int pivot) { =Y*zF>#lP  
do{ #6mr'e1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T@mYHKu  
SortUtil.swap(data,l,r); 4@=[r Zb9  
} *0Wkz'=U  
while(l SortUtil.swap(data,l,r); c3(0BSv  
return l; 8=u88?Bh  
} R0e!b+MZ.  
?MOjtAG0_~  
}  `l  
dQ Lo,S8(  
改进后的快速排序: _mTNK^gB  
`2`h4[^ [X  
package org.rut.util.algorithm.support; # blh9.V&F  
pV*d"~T  
import org.rut.util.algorithm.SortUtil; @ 1FWBH~  
jQ['f\R  
/** [ nLd>2P  
* @author treeroot oxLO[js  
* @since 2006-2-2 x LGMN)@r  
* @version 1.0 rge s`&0  
*/ %' eaW  
public class ImprovedQuickSort implements SortUtil.Sort { jvhD_L/  
Tsocc5gWZ*  
private static int MAX_STACK_SIZE=4096; h9QQ8}g  
private static int THRESHOLD=10; ekd;sEO  
/* (non-Javadoc) tG[v@-O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G%U!$\j:qd  
*/ 0%qM`KZC  
public void sort(int[] data) { |-xKH.'n  
int[] stack=new int[MAX_STACK_SIZE]; uTrQ<|}#  
5")BCA  
int top=-1; d>wG6Z,|  
int pivot; :3D[~-/S  
int pivotIndex,l,r; cd] X5)$h  
dTqL[?wH?  
stack[++top]=0; = Q"(9[Az  
stack[++top]=data.length-1; O^IS:\JX&  
3 <Zo{;  
while(top>0){ -Fc 9mv(H  
int j=stack[top--]; kfq<M7y  
int i=stack[top--]; o3HS|  
syk,e4:oA  
pivotIndex=(i+j)/2; JqtOoR  
pivot=data[pivotIndex]; 4F+G;'JV  
i}@5<&J  
SortUtil.swap(data,pivotIndex,j); =Ds&ArG  
FYH^axpp  
file://partition ;Bat--K7+  
l=i-1; [Vj|fy4  
r=j; SDO~g~NTp  
do{ LG'1^W{a  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :|Bzbn=N2  
SortUtil.swap(data,l,r); t![972.&  
} J7k=5Fqej;  
while(l SortUtil.swap(data,l,r); zwK$ q=-:  
SortUtil.swap(data,l,j); W3&~[DS@~  
Ox6^=D "  
if((l-i)>THRESHOLD){ ,.V=y%  
stack[++top]=i; aZCxyoh+  
stack[++top]=l-1; D!D}mPi[  
} 1~[GGl  
if((j-l)>THRESHOLD){ be'&tsZ9  
stack[++top]=l+1; $it>*%  
stack[++top]=j; gXB&Sgjo  
} jR{t=da  
C3b<Wa])  
} 29NP!W /g  
file://new InsertSort().sort(data); Hr/J6kyB)  
insertSort(data); 2>im'x 5  
} MJ.Kor  
/** .&/A!3pW  
* @param data xt8@l [Z  
*/ \8`^QgV`@  
private void insertSort(int[] data) { kp*BAQ  
int temp; kv`5"pa7M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +'UxO'v3]  
} )T@+"Pw8t  
} \p\rPf Y{>  
} g$mqAz<  
%Gm4,+8P3o  
} kLbo |p"cT  
h|ja67VG  
归并排序: \?AA:U*  
kaVYe)~  
package org.rut.util.algorithm.support; v[>8<z8  
%Z(lTvqG  
import org.rut.util.algorithm.SortUtil; !De U8.%  
E /V`NqC  
/**  #uuNH(  
* @author treeroot #}xPOz7:  
* @since 2006-2-2  DIh[%  
* @version 1.0 -3C$br  
*/ F=yE>[! LB  
public class MergeSort implements SortUtil.Sort{ ~PCS_  
/7C %m:  
/* (non-Javadoc) cQ/T:E7$`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~q{QquYV  
*/ l%7^'nDn  
public void sort(int[] data) { w4Ku1G#jC  
int[] temp=new int[data.length]; yj9 Ad*.  
mergeSort(data,temp,0,data.length-1); +ID% (:  
} RueL~$*6.~  
XU$\.g p-  
private void mergeSort(int[] data,int[] temp,int l,int r){ \>4x7mF!  
int mid=(l+r)/2; NjSjE_S2B8  
if(l==r) return ; Fprhu;h  
mergeSort(data,temp,l,mid); cS"PIelR  
mergeSort(data,temp,mid+1,r); {1W,-%  
for(int i=l;i<=r;i++){  U66oe3W  
temp=data; K|.!)L  
} !Ly1!;<  
int i1=l; j,#R?Ig  
int i2=mid+1; 7,3v,N|  
for(int cur=l;cur<=r;cur++){ IF|%.%I$!U  
if(i1==mid+1) I^S{V^Ty  
data[cur]=temp[i2++]; &qZ:"k  
else if(i2>r) |*zvaI(}  
data[cur]=temp[i1++]; YQ5d!a.  
else if(temp[i1] data[cur]=temp[i1++]; 2LH.If  
else #NWc<Dd  
data[cur]=temp[i2++]; /f -\ 3  
} JC4Z^/\.  
} }C&kzJBEF  
+K[H! fD  
} j(\jYH>   
N9cUlrDO  
改进后的归并排序: ^ v@& q  
1PT0<C-  
package org.rut.util.algorithm.support; kam \dn04  
_95`w9  
import org.rut.util.algorithm.SortUtil; >HQ<KFA  
c(0Ez@  
/** 1 *$-.  
* @author treeroot Q?W}]RW  
* @since 2006-2-2 1FmVx   
* @version 1.0 cGe-|>:  
*/ JU0|pstf  
public class ImprovedMergeSort implements SortUtil.Sort { ^ZO3:"t!w  
`Yc>I!iN  
private static final int THRESHOLD = 10; %R1$M318  
-j"2rIl4#  
/* l&v&a!EU  
* (non-Javadoc) ZNG{:5u,  
* 6o ]X.plr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k%lz%r  
*/ }4"T# [n#  
public void sort(int[] data) { F#Xzh Ds  
int[] temp=new int[data.length]; ~UV$(5&-  
mergeSort(data,temp,0,data.length-1); ,Mw;kevw  
} $9O%,U@  
yn-TN_/Y,  
private void mergeSort(int[] data, int[] temp, int l, int r) { \~'+TW  
int i, j, k; P[C03a!lXg  
int mid = (l + r) / 2; D[}qhDlX  
if (l == r) VcR(9~  
return; kc70HrG  
if ((mid - l) >= THRESHOLD) S`GM#(t@_  
mergeSort(data, temp, l, mid); !RwOU Ck  
else o9uir"=  
insertSort(data, l, mid - l + 1); =qVD"Z]z  
if ((r - mid) > THRESHOLD) ?]u=5gqUU  
mergeSort(data, temp, mid + 1, r); .\+%Q)?h:  
else '; Z!(r  
insertSort(data, mid + 1, r - mid); `@|Kx\y4=j  
?AJE*=b  
for (i = l; i <= mid; i++) { 0^rDf L  
temp = data; *^P$^lm?S  
} `.a~G y  
for (j = 1; j <= r - mid; j++) { G8_|w6  
temp[r - j + 1] = data[j + mid]; . 'rC'FT  
} vS'5Lm  
int a = temp[l]; p-o!K\o-1  
int b = temp[r]; L5yv}:.U  
for (i = l, j = r, k = l; k <= r; k++) { \4|o5,+(@  
if (a < b) { VVyms7 VN  
data[k] = temp[i++]; ~!{y3thZ  
a = temp; ZJ|'$=lR  
} else { _ -/<bO  
data[k] = temp[j--]; AjA.="3  
b = temp[j]; DQOEntw  
} ON<X1eU  
} OAXF=V F#  
} s0x;<si_  
#y&O5    
/** L@HWm;aN  
* @param data n:wZL&ZV0  
* @param l Z>zW83a  
* @param i G;3N"az  
*/ OwM.N+ z#T  
private void insertSort(int[] data, int start, int len) { 1W +QcK4k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); oaJnLd90W  
} c$HZvv  
} Td6"o&0A!  
} s5'So@L8  
} e[a?5,s2  
:F`yAB3  
堆排序: WMLsKoby  
xK3}z N$T  
package org.rut.util.algorithm.support; 2{E"#}/  
z(&~O;;N#  
import org.rut.util.algorithm.SortUtil; H o;bgva  
|}>;wZ[7  
/** o7W1sD1O  
* @author treeroot \6U$kMGde  
* @since 2006-2-2 $pg1Av7l  
* @version 1.0 yl[6b1  
*/ sjj*7i*  
public class HeapSort implements SortUtil.Sort{ e2PM^1{_  
`vPc&.-K  
/* (non-Javadoc) w,QO!)j!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0'9z XJ"  
*/ 5E!G  
public void sort(int[] data) { >1n[Y- r  
MaxHeap h=new MaxHeap(); H(TY.  
h.init(data); ]TmxCTVL  
for(int i=0;i h.remove(); =icynW^Fr  
System.arraycopy(h.queue,1,data,0,data.length); z3:tSjF  
}  e ):rr*  
B:Xmc,|,  
private static class MaxHeap{ 7#BU d/  
M'4$z^@Z  
void init(int[] data){ qJZ5w }  
this.queue=new int[data.length+1]; 7pY7iR_  
for(int i=0;i queue[++size]=data; D8''q%  
fixUp(size); V 2WcPI^  
} M@/Hd0$  
} (;@\gRL  
E5J2=xVW#  
private int size=0; 8XU m.nV  
V=v7<I=]  
private int[] queue; 'sCj|=y2Qc  
c$>$2[*=  
public int get() { AGdFJ>/  
return queue[1]; ,y5 7tY  
} jw"]U jub  
|4@su"OA  
public void remove() { c)tG1|Og]  
SortUtil.swap(queue,1,size--); voHFU#Z$  
fixDown(1); WTcrfs)T  
} Cd"iaiTD0  
file://fixdown Zh]FL8[ nc  
private void fixDown(int k) { (haYY]W\  
int j; @m=xCg.Z  
while ((j = k << 1) <= size) { b&V}&9'[M;  
if (j < size %26amp;%26amp; queue[j] j++; LT3ViCZ-n  
if (queue[k]>queue[j]) file://不用交换 RN%*3{-  
break; Iw<: k  
SortUtil.swap(queue,j,k); dk^Uf84.Gr  
k = j; kCu"G  
} ~X`_ g/5X  
} };:+0k/  
private void fixUp(int k) { MZ{gU>K+  
while (k > 1) { _8U 5mW  
int j = k >> 1; pUz;e#J|  
if (queue[j]>queue[k]) RnX:T)+o  
break; f/Lyc=- ]  
SortUtil.swap(queue,j,k); mXH\z  
k = j; 9y~5@/3 2R  
} nKzS2 u=:Y  
} @,Iyn<v{B  
azxGUS_i<  
} #Wz7ju;  
w)hH8jx{  
} 8"zFTP*;u  
EC4RA'Bg1k  
SortUtil: .qcIl)3  
POtj6 ?a  
package org.rut.util.algorithm; Oz[]]`C1  
 jx3J$5  
import org.rut.util.algorithm.support.BubbleSort; =wEqI)Td  
import org.rut.util.algorithm.support.HeapSort;  6tPgFa#N  
import org.rut.util.algorithm.support.ImprovedMergeSort; XPhC*r  
import org.rut.util.algorithm.support.ImprovedQuickSort; s 9Y'MQo*  
import org.rut.util.algorithm.support.InsertSort; /2!Wy6 p  
import org.rut.util.algorithm.support.MergeSort; 5VU 5kiCt  
import org.rut.util.algorithm.support.QuickSort; E8Jy!8/X9T  
import org.rut.util.algorithm.support.SelectionSort; ?J<V-,i  
import org.rut.util.algorithm.support.ShellSort; ?4kM5NtP  
t@`w}o[#  
/** _i=431Z40  
* @author treeroot 7$l!f  
* @since 2006-2-2 W]]@pbG"H\  
* @version 1.0 NEpomE(>x  
*/ ]}wo$7pO  
public class SortUtil { _dgS@n;6  
public final static int INSERT = 1; q;^Q1[Ari  
public final static int BUBBLE = 2; W_%p'8,  
public final static int SELECTION = 3; 8+>r!)Q+  
public final static int SHELL = 4; 5u<F0$qHc  
public final static int QUICK = 5; Lad8C  
public final static int IMPROVED_QUICK = 6; vbo:,]T<A  
public final static int MERGE = 7; 9\_^"5l  
public final static int IMPROVED_MERGE = 8; ne=?'e4  
public final static int HEAP = 9; _NfdJ=[Xh  
&X^ -|7~N  
public static void sort(int[] data) { /YP,Wfd%  
sort(data, IMPROVED_QUICK); BP&T|s  
} ]5V=kNu i  
private static String[] name={ [ p+]H?(A  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [IF5Iv\b  
}; Pp*:rA"N  
< )dqv0=  
private static Sort[] impl=new Sort[]{ [O"9OW'2!B  
new InsertSort(), k//l~A9m  
new BubbleSort(), X7cqAi  
new SelectionSort(), |4J ;s7us  
new ShellSort(), 3KyIBrdi?  
new QuickSort(), +:a#+]g  
new ImprovedQuickSort(), 1%v!8$  
new MergeSort(), jf`QoK  
new ImprovedMergeSort(), )(?,1>k`Z  
new HeapSort() jvI!BZ  
}; M@k8;_5  
l@ amAusE  
public static String toString(int algorithm){ xnuu#@f  
return name[algorithm-1]; e ej:  
} lo1<t<w`  
D#=$? {w  
public static void sort(int[] data, int algorithm) { }#u.Of`6"  
impl[algorithm-1].sort(data);  b6`_;Z  
} =RA8^wI  
D%=VhKq  
public static interface Sort { B_gzpS]  
public void sort(int[] data); kqebU!0-  
} lUL6L 4m  
m W/6FC  
public static void swap(int[] data, int i, int j) { [MQU~+]  
int temp = data; <}\!FuC  
data = data[j]; V<:)bG4;d  
data[j] = temp; 3 #8bG(  
} St1Ny,$yU  
} p;y\%i_  
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3+5=?,请输入中文答案:八 正确答案:八