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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。 bF3j*bpO"  
插入排序: F"LT\7yjyG  
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package org.rut.util.algorithm.support; ,5q^/h  
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import org.rut.util.algorithm.SortUtil; A!NT 2YdHZ  
/** *H;&hq  
* @author treeroot 0KEytm]  
* @since 2006-2-2 r+>9O  
* @version 1.0 "~GudK &  
*/ hcej?W8j  
public class InsertSort implements SortUtil.Sort{ Cu >pql<O  
Odagaca  
/* (non-Javadoc) p_qH7W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H~ (I  
*/ E_$ ST3  
public void sort(int[] data) { D0uf=BbS  
int temp; (|Xf=q,Le  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rq$%  
} EQg 6*V  
} qlSMg;"Ghw  
} sH6srwI  
i`E]gJ$  
} lG q;kIQ  
7/Ew(X8Fs  
冒泡排序: yp8 .\.  
7 0KZXgBy_  
package org.rut.util.algorithm.support; zm"&8/l  
<{e0 i  
import org.rut.util.algorithm.SortUtil; 2H4+D)  
wp$SO^?-  
/** hd+JKh!u  
* @author treeroot 0(teplo&P  
* @since 2006-2-2 T_pE'U%[  
* @version 1.0 IDv@r\Xw  
*/ >4bOM@[]  
public class BubbleSort implements SortUtil.Sort{ InRn!~_N  
.nT"f>S&'  
/* (non-Javadoc) }Dk_gom_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xOP\ +(  
*/ S&@~F|  
public void sort(int[] data) { l~!#<=.  
int temp; 'v4AM@%u  
for(int i=0;i for(int j=data.length-1;j>i;j--){ J0^p\mG  
if(data[j] SortUtil.swap(data,j,j-1); D4_D{\xhO  
} obUh+9K  
} -0lpsF  
} "x&H*"  
} M=@U]1n*c  
==Ju2D?%  
} f'*HP%+Y  
,X+071.(  
选择排序: c~@I1M  
U.d*E/OR5  
package org.rut.util.algorithm.support; fFMG9]*  
<[b\V+M  
import org.rut.util.algorithm.SortUtil; +HUI1@ql  
(,HA Os  
/** }?"f#bI  
* @author treeroot yU&A[DZQ  
* @since 2006-2-2 B-JgXW.\0  
* @version 1.0 CfA F.H  
*/ ePB=aCZ  
public class SelectionSort implements SortUtil.Sort { w Xfy,W  
>(*jL  
/* <Eq^r h  
* (non-Javadoc) rXvvJIbi  
*  Ws}u4t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ec~"vGLz~  
*/ (iH5F9WO  
public void sort(int[] data) { $O7>E!uVD  
int temp; ( ]'4_~e  
for (int i = 0; i < data.length; i++) { O]i}r`E8,  
int lowIndex = i; %5jxq9:K  
for (int j = data.length - 1; j > i; j--) { Ci=c"JdB  
if (data[j] < data[lowIndex]) { /\h&t6B1  
lowIndex = j; DS-Kot(k(z  
} <"aPoGda  
} e$ E=n  
SortUtil.swap(data,i,lowIndex); #>[+6y]U!  
} v-4eN1OS  
} -,3Ka:  
ZJ  u\  
} O3B\K <l  
4LKOBiEM  
Shell排序: 'N0d==aI  
mbSJ}3c"  
package org.rut.util.algorithm.support; G,$RsP  
z_CBOJl#C!  
import org.rut.util.algorithm.SortUtil; RwN*/Li  
7teg*M{  
/** xs+MvXTC  
* @author treeroot b[VP"KZ?  
* @since 2006-2-2 MX6;ww  
* @version 1.0 fGY. +W_  
*/ 8BC}D+q  
public class ShellSort implements SortUtil.Sort{ \*1pFX#  
;g7 nG{  
/* (non-Javadoc) 5k<qJ9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <JDkvpckx.  
*/ zr2%|YF  
public void sort(int[] data) { gey`HhZp)  
for(int i=data.length/2;i>2;i/=2){ !~"q$T>@  
for(int j=0;j insertSort(data,j,i); q/<.^X  
} 5}E8Tl  
} .pr-  ^  
insertSort(data,0,1); KKl8tI\u~  
} E;9SsA  
DpoRR`  
/** }"2 0:  
* @param data )9l5gZX'I  
* @param j }`\+_@ w  
* @param i owJPEx  
*/ wYOSaGyZ0I  
private void insertSort(int[] data, int start, int inc) { tAPqbi$a  
int temp; >jq~5HN  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9#@dQ/*  
} zgJ%Zr!~  
} Y_xPr%%A  
} {xMY2I++  
Cn[`]  
} \:'=ccf  
AJI,>I,}}  
快速排序: :W? 7J"  
v;80RjPy>  
package org.rut.util.algorithm.support; `/Zi=.rr  
~ubGx  
import org.rut.util.algorithm.SortUtil; +Y0Wiwr'  
dl6d!Nz*  
/** 1ZOHyO  
* @author treeroot |l 03,dOF  
* @since 2006-2-2 Q+U}    
* @version 1.0 %mAgE\y25  
*/ l+*^P'0u  
public class QuickSort implements SortUtil.Sort{ .u>IjK^  
1aS[e%9Mg  
/* (non-Javadoc) Y\Odj~Mj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x%jJvwb^|  
*/ `u 3to{  
public void sort(int[] data) { $,bLK|<hi  
quickSort(data,0,data.length-1); 6OkN(tL&.  
} pkWzaf  
private void quickSort(int[] data,int i,int j){ I;S[Ft8d  
int pivotIndex=(i+j)/2; $RuJm\f  
file://swap %}MZWf{  
SortUtil.swap(data,pivotIndex,j); x24  
.>Gq/[c0|  
int k=partition(data,i-1,j,data[j]); AhZ8B'Ee  
SortUtil.swap(data,k,j); s"*zyLUUo  
if((k-i)>1) quickSort(data,i,k-1); 1NtN-o)N?  
if((j-k)>1) quickSort(data,k+1,j); >t<FG2  
c8v+eyn  
} IX7<  
/** P%]li`56-c  
* @param data  !NUsfd  
* @param i lUJ/ nG0l  
* @param j ]2T=%(*  
* @return @V Bv}Jo  
*/ ]!E|5=q  
private int partition(int[] data, int l, int r,int pivot) { ^z-e"  
do{ R+ lwOVX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); CLg;  
SortUtil.swap(data,l,r); R%Gh4y\nF  
} RXP0 4  
while(l SortUtil.swap(data,l,r); (Eq0 |"cj  
return l; \Azl6`Em  
} x00"d$!  
AkrUb$ }  
} o$FqMRep  
)q&=x2`  
改进后的快速排序: s? @{  
HF" v \  
package org.rut.util.algorithm.support; a;|C51GH  
*Em 9R  
import org.rut.util.algorithm.SortUtil; [ Lt1OdGl  
.iNPLz1  
/** 8zP{Cmm  
* @author treeroot vz</|s  
* @since 2006-2-2 O4ciD 1  
* @version 1.0 B @H.O!  
*/ , |CT|2D>  
public class ImprovedQuickSort implements SortUtil.Sort { rR@ t5  
,F`:4=H%  
private static int MAX_STACK_SIZE=4096; {}H5%W  
private static int THRESHOLD=10; In#V1[io  
/* (non-Javadoc) W'hE,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zM%ILv4  
*/ Wky=]C%  
public void sort(int[] data) { .?UK`O2Q  
int[] stack=new int[MAX_STACK_SIZE]; n8DWA`[ib  
h7c8K)ntnf  
int top=-1; % < D  
int pivot; eN fo8xUG  
int pivotIndex,l,r; PsU.dv[  
7^P!@o$v!  
stack[++top]=0; B<i )je!  
stack[++top]=data.length-1; 8  !]$ljg  
)T/"QF}<T  
while(top>0){ R ,-y  
int j=stack[top--]; 9!zUv:;  
int i=stack[top--]; =PWh,lWS  
Z;M]^?  
pivotIndex=(i+j)/2; /.l8Jb4  
pivot=data[pivotIndex]; O'{UAb+-  
=G2D4>q  
SortUtil.swap(data,pivotIndex,j); S/Pffal  
HUiW#x%;  
file://partition e;\g[^U  
l=i-1; p1 > D  
r=j; rs2G{a  
do{ 9 =7),`$  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j38>,9u,  
SortUtil.swap(data,l,r); 1A"h!;0  
} *xR;}%s\  
while(l SortUtil.swap(data,l,r); 4 :RL[;  
SortUtil.swap(data,l,j); y Dg  
gVjI1{WTK  
if((l-i)>THRESHOLD){ <yz)iCU?  
stack[++top]=i; hG .>>  
stack[++top]=l-1; xjB2?:/2  
} [ &RZ&  
if((j-l)>THRESHOLD){ ESp)%  
stack[++top]=l+1; ~n9BN'@x  
stack[++top]=j; L!s/0kBg  
} ,R]hNjs-{  
S G|``}OA  
} Tu2BQ4\[  
file://new InsertSort().sort(data); 2mN>7Tj:  
insertSort(data); WW82=2rJ9  
} 7t=e"|^  
/** ^Lr)STh  
* @param data Y+ 75}]B  
*/ DP**pf%j  
private void insertSort(int[] data) { YzJ\< tkp  
int temp; _Bm/v^(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L"6qS3[=  
} 6<jh0=$  
} 4^vEMq8lB  
} ;M}'\.  
d%VG@./xq  
} T8+A`z=tSb  
. #`lW7  
归并排序: ;Nf5,D.D  
rt)70=  
package org.rut.util.algorithm.support; &^$dHr6v  
aTF~rAne<  
import org.rut.util.algorithm.SortUtil; t &XH:w&j  
&m2FEQLj  
/** }mQ7N&cC  
* @author treeroot ]ZKmf}A)1P  
* @since 2006-2-2 ZRN*.  
* @version 1.0 .|`J S?L[  
*/ d 1VNTB  
public class MergeSort implements SortUtil.Sort{ CnyCEIO-  
qD Z?iTHQq  
/* (non-Javadoc) m?bd6'&FR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YSERQo  
*/ # 12  
public void sort(int[] data) { nTxeV%  
int[] temp=new int[data.length];  *X- 6]C  
mergeSort(data,temp,0,data.length-1); 0Ou;MU*v  
} H1X38  
K0$8t%Z.  
private void mergeSort(int[] data,int[] temp,int l,int r){ ; mnV)8:F  
int mid=(l+r)/2; ^Uss?)jN4  
if(l==r) return ; ep`WYR|B  
mergeSort(data,temp,l,mid); tj/X 7|  
mergeSort(data,temp,mid+1,r); ;/?M&rX  
for(int i=l;i<=r;i++){ }9yAYZ0q{b  
temp=data; !wy Qk  
} Y^DS~CrM  
int i1=l; d#E]>:w9  
int i2=mid+1; o}H7;v8H  
for(int cur=l;cur<=r;cur++){ )jk X&7x  
if(i1==mid+1) ?,~B@Kx  
data[cur]=temp[i2++]; J%`-K"NB  
else if(i2>r) u:#+R_0#97  
data[cur]=temp[i1++]; \|9@*]6:  
else if(temp[i1] data[cur]=temp[i1++]; pJ35M  
else P(pw$ q$S  
data[cur]=temp[i2++]; h{xC0NC)  
} ParOWs~W/  
} wz^Q,Od  
Ojqbj0E9  
} *y +T(73  
s&:LY"[`  
改进后的归并排序: L&V;Xvbu%  
70bI}/u  
package org.rut.util.algorithm.support; ~ED8]*H|`  
;|_aACina  
import org.rut.util.algorithm.SortUtil; 3aIP^I1  
vf6_oX<Os  
/** |hBX"  
* @author treeroot KW.*LoO  
* @since 2006-2-2 v5 STe`  
* @version 1.0 9}p>='  
*/ .?{rd3[ec  
public class ImprovedMergeSort implements SortUtil.Sort { xVk|6vA7  
GPBp.$q+B  
private static final int THRESHOLD = 10; QHOA__?  
9qc<m'MZ  
/* G"w ?{W @  
* (non-Javadoc) 0kxo  
* "F A&Qm0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R gY-fc0  
*/ r}kQ<SRx  
public void sort(int[] data) { &)`xlIw}  
int[] temp=new int[data.length]; i#Tm] ++  
mergeSort(data,temp,0,data.length-1); Qvc "?yx8}  
} zAT7 ^q^  
Q;r9>E!  
private void mergeSort(int[] data, int[] temp, int l, int r) { 48;6C g  
int i, j, k; ct,B0(]  
int mid = (l + r) / 2; X"_,#3Ko!  
if (l == r) gc``z9@Xg  
return; }uWIF|h~  
if ((mid - l) >= THRESHOLD) 2ghTAsUx9  
mergeSort(data, temp, l, mid); (gN[<QL  
else *J^l r"%c  
insertSort(data, l, mid - l + 1); o5=1  
if ((r - mid) > THRESHOLD) Q9,H 0r-%  
mergeSort(data, temp, mid + 1, r); lS"g[O+  
else t^eWFX  
insertSort(data, mid + 1, r - mid); "|P8L| @*  
irj{Or^k  
for (i = l; i <= mid; i++) { g/Q"%GN,  
temp = data; 6*yt^[W  
} Qtj.@CGB  
for (j = 1; j <= r - mid; j++) { eeKErpj8A  
temp[r - j + 1] = data[j + mid]; zN}1Qh  
} A+3,y<j\  
int a = temp[l]; &o{=  
int b = temp[r]; ~ *:{U   
for (i = l, j = r, k = l; k <= r; k++) { nnr g^F  
if (a < b) { `/]Th&(5  
data[k] = temp[i++]; tQ!p<Q= $)  
a = temp; OZ{YQ}t{^1  
} else { S$9>9!1>*  
data[k] = temp[j--]; SN w3xO!;&  
b = temp[j]; BET3tiHV  
} B~S"1EE[  
} _X ?W)]:  
} Td!@i[6%H  
kb"g  
/** b{T". @b  
* @param data 9A|deETa-  
* @param l dnRS$$9#  
* @param i 2R}9wDP  
*/ -+1_ 1!  
private void insertSort(int[] data, int start, int len) { 7G,{BBB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1Z9_sd~/6  
} !~X[qT  
} s?qRy 2  
} %V r vu5  
} e,j2#wjor  
5R^e  
堆排序: )ro3yq4??  
|Z\?nZ~  
package org.rut.util.algorithm.support; y"N7r1Pf  
<*D{uMw  
import org.rut.util.algorithm.SortUtil; ,&+"|,m  
Gyo[C98  
/** 66A}5b4)]  
* @author treeroot oW0A8_|9  
* @since 2006-2-2 |>w>}w`~  
* @version 1.0 cJb.@8^J  
*/ 8:W," "  
public class HeapSort implements SortUtil.Sort{ ;ZnSWIF2  
;Y/{q B!  
/* (non-Javadoc) um/2.Sn>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $U3|.4  
*/ E0F8FR'  
public void sort(int[] data) { P''5A6#5  
MaxHeap h=new MaxHeap(); :.;p Rz  
h.init(data); 4<`Qyul-  
for(int i=0;i h.remove(); t(<^of:  
System.arraycopy(h.queue,1,data,0,data.length); K})=&<M0  
} )SkJgzvC  
bCv=Uo,+6  
private static class MaxHeap{ ;rBd_  
a/})X[2  
void init(int[] data){ *,C[yg1P  
this.queue=new int[data.length+1]; rL{3O4O  
for(int i=0;i queue[++size]=data; j$2rU'  
fixUp(size); cJ CKxj  
} `2}Frw+?  
} fW /G_  
ixK& E#  
private int size=0; RQaB _bg7  
1|]IWX|  
private int[] queue; Vjv~RNGF  
1 _A B; ^  
public int get() { dv?ael^  
return queue[1]; [73 \jT  
} i=m5M]Ef  
Y|'0bujr  
public void remove() { 9\yGv  
SortUtil.swap(queue,1,size--); "c0I2wq  
fixDown(1); Uavr>-  
} Z*AT &7  
file://fixdown GM1z@i\5  
private void fixDown(int k) { }}R?pU_  
int j; )@vhqVv?  
while ((j = k << 1) <= size) { &sFEe<  
if (j < size %26amp;%26amp; queue[j] j++; Xv1 SRP#  
if (queue[k]>queue[j]) file://不用交换 ,F&TSzH[@v  
break; O)0}yF$0  
SortUtil.swap(queue,j,k); @D?KS;#  
k = j; c"nowbf  
} hxCSE$f4  
} |2i=oX(r|  
private void fixUp(int k) { }01c7/DRP<  
while (k > 1) { _*tU.x|DP  
int j = k >> 1; K-_XdJ\  
if (queue[j]>queue[k]) 74[wZDW|(  
break; S JseP_-  
SortUtil.swap(queue,j,k); GJu[af  
k = j; e8WuAI86  
} 4tQ~Z6Jn;  
} nC:>1 kt  
aw%iO|M_  
} UR3qzPm!0e  
_T96.~Q  
} ^{V t  
#8Bs15aV  
SortUtil: u-8b,$@Z>'  
S.<aCN<@  
package org.rut.util.algorithm; p`dH4y]D  
`Z#0kpXk_  
import org.rut.util.algorithm.support.BubbleSort; #9( 0.!v  
import org.rut.util.algorithm.support.HeapSort; @3^D[  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?S*Cvr+=4  
import org.rut.util.algorithm.support.ImprovedQuickSort; #[ H4`hZ  
import org.rut.util.algorithm.support.InsertSort; &oz^dlw  
import org.rut.util.algorithm.support.MergeSort; Az+k8=?  
import org.rut.util.algorithm.support.QuickSort; [~aRA'qJ{V  
import org.rut.util.algorithm.support.SelectionSort; j&(Yk"j+  
import org.rut.util.algorithm.support.ShellSort; Ipp#{'Do  
P{bRRn4Z  
/** GiZv0>*x  
* @author treeroot p\'0m0*   
* @since 2006-2-2 6UAn# d9  
* @version 1.0 ;+Dq 3NE  
*/ As}e I!  
public class SortUtil { ?Iin/<y  
public final static int INSERT = 1; 9wTN *y  
public final static int BUBBLE = 2; jkQ%b.a  
public final static int SELECTION = 3; G!u+~{g  
public final static int SHELL = 4; {Vw\#/,  
public final static int QUICK = 5; 6>yfm4o  
public final static int IMPROVED_QUICK = 6; ~nVO%IxM4J  
public final static int MERGE = 7; azs lNL  
public final static int IMPROVED_MERGE = 8; gNWTzz<[f>  
public final static int HEAP = 9; [%0{7pz}  
8gHOs#\  
public static void sort(int[] data) { 483/ZgzT`  
sort(data, IMPROVED_QUICK); Nv~H797B  
} $_ BoG  
private static String[] name={ ~6Xr^An/Z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |]Eli%mNe  
}; F3?PlH:Y  
 kS7`g A  
private static Sort[] impl=new Sort[]{ QX`T-)T e  
new InsertSort(), nxjP4d>  
new BubbleSort(), TQ,KPf$0U  
new SelectionSort(), Z!& u_  
new ShellSort(), /<R[X>]<F  
new QuickSort(), mA?fCs  
new ImprovedQuickSort(), L0Ycf|[s,  
new MergeSort(), +W%3VV$  
new ImprovedMergeSort(), % tE#%;Z  
new HeapSort() 4:I'zR5  
}; ^pysoaZCT_  
svaclkT=  
public static String toString(int algorithm){ *y0=sG1+D  
return name[algorithm-1]; R1/h<I:  
} .eHOG]H  
:~{Nf-y0`1  
public static void sort(int[] data, int algorithm) { Q,m&XpZ  
impl[algorithm-1].sort(data); J#*%r)  
} rRQKW_9mB  
O a%ZlEUF  
public static interface Sort { 8Y,imj\(v  
public void sort(int[] data); xU!eT'Y  
} &)$}Nk  
?;YymD_  
public static void swap(int[] data, int i, int j) { tRCz[M&  
int temp = data; TPF5?  
data = data[j]; [S_qi,  
data[j] = temp; iD${7 _  
} X{u\|e{  
} -z~;f<+I`  
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