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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。 (A~/'0/  
插入排序: 1$p2}Bf {n  
M!REygyx  
package org.rut.util.algorithm.support; F!]lU`z)=  
7~5ym15*  
import org.rut.util.algorithm.SortUtil; K>DR Jz  
/** Vnr[}<L  
* @author treeroot XYZ4TeW\1  
* @since 2006-2-2 +O*/"]h  
* @version 1.0 +7=K/[9p  
*/ z <##g  
public class InsertSort implements SortUtil.Sort{ mjKS{  
Yd#/1!A7u  
/* (non-Javadoc) {l/-LZ.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hHT_V2*  
*/ z$?~Y(EY  
public void sort(int[] data) { f]\CD<g3|E  
int temp; 2C9V|[U,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); br":y>=,  
} {;:/-0s  
} IHcD*zQ  
} 9 mmCp&~Z  
ucG@?@JENm  
} 6 1F(<!  
93` AWg/T  
冒泡排序: d;>#Sxf  
,^eYlmT>6  
package org.rut.util.algorithm.support; \ywXi~+kUv  
iC9 8_o_9  
import org.rut.util.algorithm.SortUtil; f;xkT  
y&?6FY  
/** SBIj<Yy]  
* @author treeroot Zw ^kmSL"  
* @since 2006-2-2 !AKg m'Nw  
* @version 1.0 3G`aHTWk  
*/ z6w3"9Um  
public class BubbleSort implements SortUtil.Sort{ ).sRv6/c  
a{qM2P(S  
/* (non-Javadoc) YW60q0:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A8oo@z68n>  
*/ +gJ8{u!=k  
public void sort(int[] data) { o!{w"K  
int temp; 2M68CE  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7]||UuF<  
if(data[j] SortUtil.swap(data,j,j-1); 'Pn3%&O$  
} -8j+s}Q  
} ,u`YT%&L  
} ,z-}t& _t  
} A<qTg`gA  
S/ODq L|  
} nysUZB  
OVhE??#  
选择排序: 9/ibWa\.  
r?Wk<>%>  
package org.rut.util.algorithm.support; .xH5fMj,"  
83Q 4On  
import org.rut.util.algorithm.SortUtil; (+FfB"3]  
GJtZ&H  
/** &'}RrW-s  
* @author treeroot 17G'jiY H  
* @since 2006-2-2 TTt#a6eJ  
* @version 1.0 *2 2nVKi {  
*/ hR Ue<0o:  
public class SelectionSort implements SortUtil.Sort { [5+}rwm&W  
QUQu^p  
/* ~XWQhIAM4  
* (non-Javadoc) .QN>z-YA6:  
* Z3& _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cxr=k%~}J  
*/ Q^e}?v%=%3  
public void sort(int[] data) { 8F&=a,ps[  
int temp; qIIv6''5@  
for (int i = 0; i < data.length; i++) { h?8]C#6^  
int lowIndex = i; <\}KT*Xp  
for (int j = data.length - 1; j > i; j--) { H P3lz,d  
if (data[j] < data[lowIndex]) { w6W}"Uw  
lowIndex = j; /|eA9 ]  
} jg\Z;_!W  
} ZfgJ.<<  
SortUtil.swap(data,i,lowIndex); N,;5{y1;J  
} S7L=#+Z  
} Ksy -e{n  
j&Wl0  
} >w^YO25q  
k+8q{5>A<  
Shell排序: @vrV*!  
JaL%qco  
package org.rut.util.algorithm.support; NwG= <U*  
,H19`;Q  
import org.rut.util.algorithm.SortUtil; G6FEp`  
Dqe^E%mc  
/** :"I E  
* @author treeroot kZerKP  
* @since 2006-2-2 iMP]W _  
* @version 1.0 ^WNrGF  
*/ [ zEUH:9D  
public class ShellSort implements SortUtil.Sort{ )_i qAqkS  
?Vdia:  
/* (non-Javadoc) 52,m:EhL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0 SNIYkGE  
*/ I{*<4a7q  
public void sort(int[] data) { x"{'&J[hx  
for(int i=data.length/2;i>2;i/=2){ 2h=!k|6  
for(int j=0;j insertSort(data,j,i); MvWaB  
} x`dHJq`_g  
} FTQ%JTgT  
insertSort(data,0,1); %e(z /"M=`  
} 6N;wqn  
-OA?BEQ=I  
/** 0#S W!b|%  
* @param data K?zH35f$  
* @param j )l[M Q4vWW  
* @param i ;Mpy#yIU.  
*/  $W9{P;  
private void insertSort(int[] data, int start, int inc) { $[/&74#0HX  
int temp; 'Ub g0"F(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !cAyTl(_  
} \&iP`v`K  
} D0#x Lh  
} !H irhD N  
0 rXx RQ  
} }c}| $h^Y  
[h34d5'w  
快速排序: Xp8]qH|K   
*i- _6s  
package org.rut.util.algorithm.support; 8$ma;U d  
h0g:@ae%&  
import org.rut.util.algorithm.SortUtil; $d)ca9  
l:<?{)N`  
/** [-;_ZFS{  
* @author treeroot JNa"8  
* @since 2006-2-2 72Iy^Y[MX  
* @version 1.0 "Za >ZRR  
*/ k=B] &F  
public class QuickSort implements SortUtil.Sort{ (jFGa2{  
S<WdZ=8sA  
/* (non-Javadoc) D[mSmpjE6&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OVko+X`  
*/ tdSfi<y5I  
public void sort(int[] data) { Ar:*oiU  
quickSort(data,0,data.length-1); !2'jrJGc  
} -sjd&)~S[  
private void quickSort(int[] data,int i,int j){ pm\x~3jHs  
int pivotIndex=(i+j)/2; -"h;uDz|z  
file://swap !\"5rNy  
SortUtil.swap(data,pivotIndex,j); MV\|e1B}  
W'.s\e?gh  
int k=partition(data,i-1,j,data[j]); >b6-OFJx  
SortUtil.swap(data,k,j); k?z98 >4  
if((k-i)>1) quickSort(data,i,k-1); ?F6pEt4  
if((j-k)>1) quickSort(data,k+1,j); _',prZ*  
,Td!|~I|j6  
} V {pj~D.E  
/** lI-L` x  
* @param data o_D?t-XH  
* @param i -R%<.]fJ  
* @param j 7A\~)U @  
* @return M\Z6$<H?U  
*/ j^;I3_P  
private int partition(int[] data, int l, int r,int pivot) { jGEt+\"/QJ  
do{ D!.+Y-+Xzu  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); P~G1EK|4  
SortUtil.swap(data,l,r); Fx $Q;H!.  
} f"9q^  
while(l SortUtil.swap(data,l,r); oA =4=`  
return l; qd#sY.|1  
} p"FW&Q=PN  
<0QH<4  
} =ZDAeVz3w  
sm\f0P!rv  
改进后的快速排序: F^5?\  
sp5eVAd  
package org.rut.util.algorithm.support; gOr%!QaF  
`S2[5i  
import org.rut.util.algorithm.SortUtil; 8g:;)u4$P  
BVr0Gk  
/** GW$.lo1|)  
* @author treeroot +[ R/=$  
* @since 2006-2-2 3$m4q`J  
* @version 1.0 1\g6)|R-+  
*/ P#_sg0oJF  
public class ImprovedQuickSort implements SortUtil.Sort { 9(5Oe H6o?  
F6K4#t+9  
private static int MAX_STACK_SIZE=4096; qnoNT%xazo  
private static int THRESHOLD=10; s_> f5/i2  
/* (non-Javadoc) (d<4"!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )@L'wW  
*/ Wt=|  
public void sort(int[] data) { +\|Iu;w  
int[] stack=new int[MAX_STACK_SIZE]; _`I "0.B]  
F@*+{1R  
int top=-1; )QG<f{wS  
int pivot; qOUqs'7/]  
int pivotIndex,l,r; aAA9$  
3nu^l'WQ  
stack[++top]=0; +=mkCU  
stack[++top]=data.length-1; Y;e,Gq`  
sz)oZPu|  
while(top>0){ ']>Mp#j  
int j=stack[top--]; E6,4RuCK  
int i=stack[top--]; Z0*ljT5|  
<6fv1d+v  
pivotIndex=(i+j)/2; *0|IXGr  
pivot=data[pivotIndex]; L}FO jrN  
HS.^y x  
SortUtil.swap(data,pivotIndex,j); F P>)&3>_  
.'rW.'Ft  
file://partition ?@6/E<-Z$  
l=i-1; 3T e^  
r=j; 9:!gI|C  
do{ .%^]9/4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]miy/V }5  
SortUtil.swap(data,l,r); TU GNq  
} EM/@T}  
while(l SortUtil.swap(data,l,r); Cz W:L&t  
SortUtil.swap(data,l,j); T<L^N+<,{N  
Pf_S[ sm  
if((l-i)>THRESHOLD){ E-{^E.w1  
stack[++top]=i; Cxcr/9  
stack[++top]=l-1; l%`F&8K  
} XO9M_*Va  
if((j-l)>THRESHOLD){ S_T1y  
stack[++top]=l+1; ]a! xUg!S  
stack[++top]=j; 1|?05<8  
} oX DN+4ge  
)6w}<W*1E  
} fnNYX]_bk  
file://new InsertSort().sort(data); T`9u!#mT=  
insertSort(data); VL/|tL>E^  
} mCWhUBghR  
/** BA:yQ  
* @param data 2PeR   
*/ E^rbcGJ  
private void insertSort(int[] data) { =Me5ft w  
int temp; sj8~?O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ht-t1q  
} w~ ;I7:  
} eh,~F   
} v NeCpf  
.!6>oL/iF  
} tU^kQR!  
\y88d4zX  
归并排序: a3VM '  
8UMF q  
package org.rut.util.algorithm.support; *5wu   
uu/+.9  
import org.rut.util.algorithm.SortUtil; AxZD-|.  
@_"9Dy Y%  
/** O4g+D#Lu  
* @author treeroot rx5B=M  
* @since 2006-2-2 xy<`#  
* @version 1.0 90# ;?#  
*/ dDD<E?TjD  
public class MergeSort implements SortUtil.Sort{ #9m$ N  
3G meD/6  
/* (non-Javadoc) % ',F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +,&O1ykY  
*/ )$&dg2[  
public void sort(int[] data) { if)Y9:{r^  
int[] temp=new int[data.length]; k`{@pt.  
mergeSort(data,temp,0,data.length-1); #k$)i[aI-  
} X/; p-KX  
c=;:R0_'t  
private void mergeSort(int[] data,int[] temp,int l,int r){ N,J9Wu ZJ\  
int mid=(l+r)/2; * FeQ*`r  
if(l==r) return ; 1Fe^Qb5G  
mergeSort(data,temp,l,mid); (Si=m;g  
mergeSort(data,temp,mid+1,r); p:OPw D+  
for(int i=l;i<=r;i++){ 2qHf'  
temp=data; jV/CQM5a+  
} >;#=gM  
int i1=l; y?)}8T^  
int i2=mid+1; Jj= ;  
for(int cur=l;cur<=r;cur++){ WA$>pG5s  
if(i1==mid+1) `Rd m-[&  
data[cur]=temp[i2++]; z**hD2R!  
else if(i2>r) oR~e#<$;  
data[cur]=temp[i1++]; 97,rE$bC  
else if(temp[i1] data[cur]=temp[i1++]; YxGcFjJ  
else Otz E:qe  
data[cur]=temp[i2++]; -L3|&O_  
} ]=EM@  
} 7 JDN{!jT  
]O` {dnP  
} t UR c bwV  
Fa epDjY8  
改进后的归并排序: m3 ^/: <  
{3Y )rY!z  
package org.rut.util.algorithm.support; BYM3jXWi0v  
R|P_GN6 >  
import org.rut.util.algorithm.SortUtil; 3:5DL!Sm8J  
&6j<ca  
/** erl:9.  
* @author treeroot hAqg Iu*  
* @since 2006-2-2 >|o_wO  
* @version 1.0 e/8z+H^H  
*/ /U$8TT8+-  
public class ImprovedMergeSort implements SortUtil.Sort { 45@]:2j  
5y} v{Ijt  
private static final int THRESHOLD = 10; C*X G_b ]  
$>R(W=Q  
/* }K(o9$V ^!  
* (non-Javadoc) WV"jH9"[  
* 6] z}#"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )B!d,HKt;  
*/ A K/z6XGy  
public void sort(int[] data) { Zw] ?.  
int[] temp=new int[data.length]; XTeb9h)3  
mergeSort(data,temp,0,data.length-1); CodSJ,  
} ;50_0Mv;(:  
*8ExRQZ$  
private void mergeSort(int[] data, int[] temp, int l, int r) { `*\{.;,]#  
int i, j, k; .9|u QEL  
int mid = (l + r) / 2; 3_`szl-  
if (l == r) l12$l<x&M  
return; (X6sSO  
if ((mid - l) >= THRESHOLD) ~JuKV&&}K  
mergeSort(data, temp, l, mid); S)A'Y]2X  
else H<ZU#U0FZf  
insertSort(data, l, mid - l + 1); Sg] J7;]  
if ((r - mid) > THRESHOLD) R[1BfZ6s  
mergeSort(data, temp, mid + 1, r); me\cLFw  
else "%@uO)A /  
insertSort(data, mid + 1, r - mid); plV7+?G  
\;]kYO}  
for (i = l; i <= mid; i++) { 15zrrU~D  
temp = data; y_}SK6{  
} o0p T6N)  
for (j = 1; j <= r - mid; j++) { *o' 4,+=am  
temp[r - j + 1] = data[j + mid]; ecX/K.8l  
} !]S=z^"<  
int a = temp[l]; -qebQv  
int b = temp[r]; l SkEuN  
for (i = l, j = r, k = l; k <= r; k++) { x7RdZC  
if (a < b) { hxC!+ArVe  
data[k] = temp[i++]; M0-,M/]l  
a = temp; QMk+RM8U  
} else {  yu ,h\  
data[k] = temp[j--]; ;t]|15]u  
b = temp[j]; {$^SP7qV#>  
} !Zbesp KZ  
} >sj bK%  
} ,vG<*|pn  
:+ ,st&(E  
/** nDlO5 pe"d  
* @param data IbWPlbH  
* @param l vN{-?  
* @param i `ycU-m==  
*/ }r2[!gGd%|  
private void insertSort(int[] data, int start, int len) { Y5-kj,CB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sIm#_+Y  
} I}v]Zm9  
} HP a|uDVv  
} m1.B\~S3  
} .yVnw^gu  
2W3W/> 2 h  
堆排序: dALK0U  
4VIg>EL*  
package org.rut.util.algorithm.support; b Dg9P^<n  
G^Xd-7 GQ  
import org.rut.util.algorithm.SortUtil; el'j&I  
98*x 'Wp  
/** H_X?dj15  
* @author treeroot F$*3@Y  
* @since 2006-2-2 vSM_]fn  
* @version 1.0 ygvzdYd  
*/ !*P&Eat  
public class HeapSort implements SortUtil.Sort{ 9NWloK6bT  
WL\^F#:  
/* (non-Javadoc) `Lz1{#F2G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lIuXo3  
*/ %yaG,;>U  
public void sort(int[] data) { DuF7HTN[K  
MaxHeap h=new MaxHeap(); M^ 5e~y  
h.init(data); /R%^rz'w  
for(int i=0;i h.remove(); fr#Qz{  
System.arraycopy(h.queue,1,data,0,data.length); yL"i  
} #'>?:k  
.v,bXU$@YG  
private static class MaxHeap{ 6s,2NeVWa  
>%c*Xe  
void init(int[] data){ b|ZLX:  
this.queue=new int[data.length+1]; G+yL;G/  
for(int i=0;i queue[++size]=data; Zu=kT}aGg  
fixUp(size); p^8 JLC  
} wZv-b*4  
} n+quSF)  
,#aS/+;[)  
private int size=0; 6+ 8mV8{-8  
Za!w#j%h  
private int[] queue; 1D$::{h  
d_iY&-gq/  
public int get() { J v<$*TVS0  
return queue[1]; Ofm5[q=  
} >h[(w  
sA\L7`2H  
public void remove() { M@O2 WB1ws  
SortUtil.swap(queue,1,size--); sPpS~wk*  
fixDown(1); nx;$dxx_Ws  
} 4p x_ZD#J  
file://fixdown E!@/NE\-  
private void fixDown(int k) { E|,30Z+  
int j; k2OM="Ei}  
while ((j = k << 1) <= size) { y#bK,}  
if (j < size %26amp;%26amp; queue[j] j++; jvO3_Zt9  
if (queue[k]>queue[j]) file://不用交换 hrT%XJl  
break; QSmJ`Bm  
SortUtil.swap(queue,j,k); ]-KV0H  
k = j; @,YlmX}  
} f N0bIE Y  
} BVAr&cu  
private void fixUp(int k) { %uEtQh[  
while (k > 1) { va>"#;37  
int j = k >> 1; Bj&_IDs4  
if (queue[j]>queue[k]) "!a`ygqpT  
break; +@>:%yX  
SortUtil.swap(queue,j,k); &9@gm--b:  
k = j; iIB9j8  
} #7\b\~5  
} ;[cai MA-  
8{@`kyy|  
} IM$0#2\  
j=Q$K #sBt  
} od(:Y(4  
aG Ef#A  
SortUtil: 3d@ef |  
<c\]Ct  
package org.rut.util.algorithm; NGj"ByVjx  
[Gf{f\O  
import org.rut.util.algorithm.support.BubbleSort; fwH`}<o  
import org.rut.util.algorithm.support.HeapSort; ?k::tNv0  
import org.rut.util.algorithm.support.ImprovedMergeSort; e2Ww0IK!E  
import org.rut.util.algorithm.support.ImprovedQuickSort; (s Jq;Z  
import org.rut.util.algorithm.support.InsertSort; k)i"tpw  
import org.rut.util.algorithm.support.MergeSort; hU)'OKe  
import org.rut.util.algorithm.support.QuickSort; 7g-$oO  
import org.rut.util.algorithm.support.SelectionSort; C{)HlOW  
import org.rut.util.algorithm.support.ShellSort; FbBX}n  
|f3U%2@  
/** [%t3[p<)O  
* @author treeroot enPLaiJ'|q  
* @since 2006-2-2 u&tFb]1@)  
* @version 1.0 +:!ScG*  
*/ ~xE=mg4le  
public class SortUtil { N)P((>S;  
public final static int INSERT = 1; a! ?.F_T9A  
public final static int BUBBLE = 2; K@*rVor{  
public final static int SELECTION = 3; yFi6jN#~  
public final static int SHELL = 4; n_u`B|^Pj  
public final static int QUICK = 5; j,4,zA1j|  
public final static int IMPROVED_QUICK = 6; `>\4"`I  
public final static int MERGE = 7; }<.7xz|V  
public final static int IMPROVED_MERGE = 8; lc" qqt  
public final static int HEAP = 9; [='p!7 z  
aSTFcz"  
public static void sort(int[] data) { Ny B&uf  
sort(data, IMPROVED_QUICK); y]J3h Ks  
} hMz&JJ&B  
private static String[] name={ o|+E+l9\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D-~G|8g  
}; 6QW<RXom  
@7 )Z  
private static Sort[] impl=new Sort[]{ l3BD <PB2S  
new InsertSort(), a6k(9ZF  
new BubbleSort(), j=FMYd8$y  
new SelectionSort(), A"0wvk)UcY  
new ShellSort(), `(!W s\:  
new QuickSort(), O1|B3M[P  
new ImprovedQuickSort(), G&.d)NfE  
new MergeSort(), jT{f<P0  
new ImprovedMergeSort(), Lr wINVa  
new HeapSort() wInY7u Bd!  
}; Is<x31R  
=?wMESU  
public static String toString(int algorithm){ Gee~>:_Q{J  
return name[algorithm-1]; lD9%xCo9(  
} g)X7FxS,z  
HgYc@P*b  
public static void sort(int[] data, int algorithm) { @l)\?IEF@f  
impl[algorithm-1].sort(data); (rAiDRQ[  
} mMV2h|W   
dFx2>6AZt  
public static interface Sort { f V*}c`  
public void sort(int[] data); ^=Q8]W_*  
} AS`2=w  
#NW Zk.S  
public static void swap(int[] data, int i, int j) { -QN1oK@\mE  
int temp = data; BXNI(7xi  
data = data[j]; FwXKRZa  
data[j] = temp; T!Xm")d  
} 1]_?$)$T  
} <"hb#Tn  
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10+5=?,请输入中文答案:十五