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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。 r PK.Q)g  
插入排序: -1RMyVx  
#79[Qtkrhm  
package org.rut.util.algorithm.support; ?-vWNv  
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import org.rut.util.algorithm.SortUtil; U/^#nU.,  
/** 3ie k >'T  
* @author treeroot Cj<8r S4+  
* @since 2006-2-2 & UOxS W  
* @version 1.0 M{{kO@P"9  
*/ .JXEw%I@  
public class InsertSort implements SortUtil.Sort{ dN)8r  
@,TIw[p  
/* (non-Javadoc) ^`'\eEa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h_[{-WC  
*/  }o*A>le  
public void sort(int[] data) { G<n75!  
int temp; abQ.N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e;"J,7@  
} n@RmH>"  
} \&hq$  
} YWl#!"-  
]690ey$E:j  
} Sv{n?BYq  
,3Q~X$f  
冒泡排序: A-T-4I  
qBX_v5pvVA  
package org.rut.util.algorithm.support; dX cbS<  
RI&O@?+U  
import org.rut.util.algorithm.SortUtil; =J IceLL  
@6>Q&G Yqt  
/** qqf`z,u  
* @author treeroot 0BlEt1e2T  
* @since 2006-2-2 < -`.u`  
* @version 1.0 ,s#~00C|  
*/ Op ar+|p\  
public class BubbleSort implements SortUtil.Sort{ ]O"f%   
0N$7(.  
/* (non-Javadoc) a+cMXMf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `xLsD}32  
*/ C6;2Dd]"N  
public void sort(int[] data) { 0]|`*f&p;  
int temp; ]u|v7}I4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5p[}<I{  
if(data[j] SortUtil.swap(data,j,j-1); ~{/M_ =  
} O D}RnKL  
} +M0pmK!  
} 1RYrUg"s"  
} pXSShU#  
e c&Y2  
} 3Tl<ST\  
9;e!r DW,#  
选择排序: sE% $]Jp  
wsWFD xR  
package org.rut.util.algorithm.support; ;|5-{+2U%  
VV$t*9w  
import org.rut.util.algorithm.SortUtil; &>-j4,M  
{|?^@  
/** ukSv70Ev  
* @author treeroot ^?VQ$o2  
* @since 2006-2-2 W "'6 M=*  
* @version 1.0  rL{R=0  
*/ LORcf1X/  
public class SelectionSort implements SortUtil.Sort { h 3CA,$HJ  
|"gL {De  
/* |sZqqgZ-  
* (non-Javadoc) ?R)]D:`  
* I%3[aBz4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D@bGJc0  
*/ j]BRfA  
public void sort(int[] data) { K;R H,o1  
int temp; %\m"Yi]  
for (int i = 0; i < data.length; i++) { p~$cwbQ!  
int lowIndex = i; *LEy# N  
for (int j = data.length - 1; j > i; j--) { _ %nz-I  
if (data[j] < data[lowIndex]) { N[e,){v  
lowIndex = j; |\,OlX,  
} RxP H[7oZ  
} -'&/7e6>y  
SortUtil.swap(data,i,lowIndex); "?8)}"/f  
} a`!Jq'  
} ;]dD\4_hK  
o:Fq|?/e  
} J usU5 e|  
w' 7sh5  
Shell排序: OEW'bT)  
E/zf9\  
package org.rut.util.algorithm.support; PF%-fbh!~  
b:dN )m  
import org.rut.util.algorithm.SortUtil; >+2&7u  
Cr.YSW g)4  
/** R_!.vGhkN  
* @author treeroot _ \D %  
* @since 2006-2-2 f"ezmZI  
* @version 1.0 5'zXCHt  
*/ #<*Vc6pC  
public class ShellSort implements SortUtil.Sort{ t3;Zx+Br  
FdU]!GO- X  
/* (non-Javadoc) .GrOdDK$ns  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /(dP)ysc  
*/ '75T2Ud  
public void sort(int[] data) { `'YX>u/  
for(int i=data.length/2;i>2;i/=2){ M+/G>U  
for(int j=0;j insertSort(data,j,i); $V~@w.-Z#  
} H1bR+2s  
}  Gl~l  
insertSort(data,0,1); +?_!8N8  
} jq+(2  
G3.aw  
/** fkV@3sj  
* @param data ]VI^ hhf  
* @param j WZ CI*'  
* @param i {r^_g(.q  
*/ *6Wiq5M>.  
private void insertSort(int[] data, int start, int inc) { 1h,iWHC  
int temp; M(-)\~9T  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |2(q9j  
} EZUaYp ~M  
} }%wd1`l7  
} [|(|"dh@^H  
yM_/_V|G  
} \nl(tU#j  
:/5m D  
快速排序: 78& |^sq  
0Hnj<|HL  
package org.rut.util.algorithm.support; )jM%bUk,!  
q W(@p`  
import org.rut.util.algorithm.SortUtil; 3jx%]S^z|  
,Z`}!%?  
/** +3v)@18B1  
* @author treeroot ^m\o(R  
* @since 2006-2-2 RT[p!xL  
* @version 1.0 o@meogkL  
*/ O. * 0;5  
public class QuickSort implements SortUtil.Sort{ x YS81  
v:O{"s  
/* (non-Javadoc) 'Y?-."eKh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A7p4M?09  
*/ CoN[Yf3\  
public void sort(int[] data) { )%(ZFn}  
quickSort(data,0,data.length-1); B,>02EZ  
} EC+t-:a]  
private void quickSort(int[] data,int i,int j){ ^~4]"J};M  
int pivotIndex=(i+j)/2; <8r"QJY/  
file://swap V?mP7  
SortUtil.swap(data,pivotIndex,j); 4I4m4^  
1XGg0SC  
int k=partition(data,i-1,j,data[j]); g)hEzL0k  
SortUtil.swap(data,k,j); (,Y[2_Zv  
if((k-i)>1) quickSort(data,i,k-1); 66=[6U9 *  
if((j-k)>1) quickSort(data,k+1,j); -#\T  
.$U,bE  
} !(d] f0  
/** 7oZ :/6_>  
* @param data fNN l1Vls  
* @param i ~ 'ZwD/!e  
* @param j &L6Ivpj-  
* @return mxlh\'b  
*/ .f~9IAXP`  
private int partition(int[] data, int l, int r,int pivot) { } z'Jsy[s  
do{ axQ>~v WN/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )5|9EXh  
SortUtil.swap(data,l,r); G(E1c"?  
} [S6u:;7  
while(l SortUtil.swap(data,l,r); [YvS#M3T  
return l; i?T-6{3I  
} J( 1Tl  
J 6 ~Sr  
} EX)&|2w  
"P! .5B  
改进后的快速排序: K^WDA])  
BMp'.9Qgm  
package org.rut.util.algorithm.support; }*x1e_m}H  
4"&-a1N  
import org.rut.util.algorithm.SortUtil; 4Kj.o  
-2hirA<^  
/** 6uE20O<z]  
* @author treeroot |\(uO|)ju  
* @since 2006-2-2 Ip8ml0oG  
* @version 1.0 ')xOL =w  
*/ w:\} B'u  
public class ImprovedQuickSort implements SortUtil.Sort { dGZie .Zx  
-Y_, .'ex  
private static int MAX_STACK_SIZE=4096; J v}  
private static int THRESHOLD=10; <Jgcj 4D  
/* (non-Javadoc) 1I%u)[;>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nj9A-*0g6N  
*/ 0U=wGI O  
public void sort(int[] data) { :jTSO d[r  
int[] stack=new int[MAX_STACK_SIZE]; "#C2+SKM1  
~"+"6zg  
int top=-1; e!VtDJDS  
int pivot; xpdpD  
int pivotIndex,l,r; ZSf &M  
<8WFaP3,  
stack[++top]=0; 7uR;S:WX  
stack[++top]=data.length-1; \HGf!zZ  
|~Dl<#58  
while(top>0){ :^7w  
int j=stack[top--]; 15ailA&(Qm  
int i=stack[top--]; u=:f%l  
,YD7p= PY  
pivotIndex=(i+j)/2; .n<vhLDQn  
pivot=data[pivotIndex]; F`g(vD >  
a_Y<daRO  
SortUtil.swap(data,pivotIndex,j); kj6:P$tH  
1Q@]b_"Xh  
file://partition <-I69`  
l=i-1; f.w",S^  
r=j; J&8KIOz14Z  
do{ m?w_ ]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h'*v$lt  
SortUtil.swap(data,l,r); ]}3s/NJi  
} lDL&":t  
while(l SortUtil.swap(data,l,r); -[=~!Qr:  
SortUtil.swap(data,l,j); 33oW3vS  
kqBZsfF  
if((l-i)>THRESHOLD){ [=K lDfU=  
stack[++top]=i; I}PI  
stack[++top]=l-1; <r}wQ\F#  
} ;e?M;-  
if((j-l)>THRESHOLD){ (d_z\U7l  
stack[++top]=l+1; of B:7  
stack[++top]=j; ,@ '^3u  
} 5%jhVys23  
T.da!!'B f  
} ?X@!jB,Pv  
file://new InsertSort().sort(data); `nF SJlr&  
insertSort(data); sh :$J[  
} NWf=mrS8@$  
/** O},}-%G  
* @param data httywa^  
*/ &J 3QO%  
private void insertSort(int[] data) { wtS*-;W  
int temp; Z|t=t"6"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JLu$1A@ '  
} ,iV%{*p]  
} nXT`7  
} j4/[Z'5ny  
+p%3pnj:K  
} *L^W[o  
VM$n|[C~  
归并排序: FCt<h/  
;FqmZjm  
package org.rut.util.algorithm.support; COw"6czX/  
# 55>?  
import org.rut.util.algorithm.SortUtil; h ;*x1BVE  
AQ)gj$ m3  
/** gWr7^u&q@|  
* @author treeroot 2F2Hl   
* @since 2006-2-2 :-RB< Lj  
* @version 1.0 Wj.t4XG!  
*/ e\6H.9=  
public class MergeSort implements SortUtil.Sort{ Bt<)1_  
VlV X  
/* (non-Javadoc) JVoC2Z<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M+%Xq0`T  
*/ >M#@vIo?<6  
public void sort(int[] data) { &qbEF3p^@  
int[] temp=new int[data.length]; _*AI1/>`  
mergeSort(data,temp,0,data.length-1); 4kL6aSqT  
} cy^=!EfA  
ek&~A0k_o  
private void mergeSort(int[] data,int[] temp,int l,int r){ BdD]HXB|_  
int mid=(l+r)/2; 0z/*JVka  
if(l==r) return ; 'APx  
mergeSort(data,temp,l,mid); rn-bfzoDS  
mergeSort(data,temp,mid+1,r); 2^B_iyF;  
for(int i=l;i<=r;i++){ {.LJ(|(Mz  
temp=data; n.@HT"  
} !Q>xVlPVu  
int i1=l; {8.Zb NEJ  
int i2=mid+1; 5{HF'1XgZ*  
for(int cur=l;cur<=r;cur++){ 'pt(  
if(i1==mid+1) nVs@DH  
data[cur]=temp[i2++];  Gsh9D  
else if(i2>r) lc <V_8  
data[cur]=temp[i1++]; ]fajj\  
else if(temp[i1] data[cur]=temp[i1++]; $z_yx `5  
else y7+@ v'  
data[cur]=temp[i2++]; j/aJDE(+  
} d}O\:\}y  
} S})f`X9_}  
[3X\"x5@V  
} OkC.e')Vx  
J?V$V >d  
改进后的归并排序: IT NFmD  
sV#%U%un  
package org.rut.util.algorithm.support; 'ayb`  
_|\X8o_  
import org.rut.util.algorithm.SortUtil; vN(~}gOd\  
e[iv"|+  
/** Lyc6nP;F  
* @author treeroot a &tWMxBr  
* @since 2006-2-2 _o9axBJs  
* @version 1.0 hj1;f<' U  
*/ e\X[\ve  
public class ImprovedMergeSort implements SortUtil.Sort { pJFn 8&!J  
uzxwJs'fz  
private static final int THRESHOLD = 10; ,Mw93Kp Va  
K{d3)lVYCS  
/* 3u j|jwL  
* (non-Javadoc) m%.4OXX"&  
* F9LKO3Rh#u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X QLP|v;"  
*/ z9 0JZA  
public void sort(int[] data) { c!HGiqp  
int[] temp=new int[data.length]; fK:4jl-r  
mergeSort(data,temp,0,data.length-1); 9X*Z\-  
} ]0'cdC  
jUE:QOfRib  
private void mergeSort(int[] data, int[] temp, int l, int r) { F$ZWQ9&5U0  
int i, j, k; _-o*3gmbQ  
int mid = (l + r) / 2; f`:e#x  
if (l == r) P>)-uLc~W  
return; YRG+I GX  
if ((mid - l) >= THRESHOLD) Av.(i2  
mergeSort(data, temp, l, mid); kZU8s'C  
else n{r+t=X  
insertSort(data, l, mid - l + 1); FT[oM<M\Xd  
if ((r - mid) > THRESHOLD) s|pb0  
mergeSort(data, temp, mid + 1, r); H'q&1^w)  
else d#ya"e>  
insertSort(data, mid + 1, r - mid); 6zRJ5uI,/  
~9kvC&/{[  
for (i = l; i <= mid; i++) { cQ6[o"j.  
temp = data; )_GM&-  
} 9`4h"9dO  
for (j = 1; j <= r - mid; j++) { >:W)9o  
temp[r - j + 1] = data[j + mid]; i_`YZ7Hxp  
} smIZ:L %  
int a = temp[l]; 7KRc^ *pZs  
int b = temp[r]; %f6l"~y  
for (i = l, j = r, k = l; k <= r; k++) { yZ0;\Tr*J  
if (a < b) { pqMv YF  
data[k] = temp[i++]; [O"i!AQ  
a = temp; +GP"9S2%R  
} else { X2 M<DeF:  
data[k] = temp[j--]; 9'8OGCN  
b = temp[j]; px//q4 U  
} rJ\A)O+Mq(  
} 4 3]6J]!)  
} &U4]hawbOU  
?=r!b{9  
/** QAygr4\X^  
* @param data U|{WtuR  
* @param l 7w>"M  
* @param i 3C_g)5 _:  
*/ VZAdc*X  
private void insertSort(int[] data, int start, int len) { ]3d&S5zU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P2`ks[u+i  
} jvu,W4  
} F<V zVEx  
} wf|CE410  
} 2i,Jnv=sR  
oC4rL\d{  
堆排序: Q96g7[  
jWU)y)$  
package org.rut.util.algorithm.support; @kqy!5)K  
brTB /(E  
import org.rut.util.algorithm.SortUtil; VJ=!0v  
)3G?5 OTS  
/** IL>g-  
* @author treeroot rtzxMCSEU  
* @since 2006-2-2 b%)a5H(  
* @version 1.0 ^8MgNVoJ)  
*/ QkF-}P%  
public class HeapSort implements SortUtil.Sort{ Q2fa]*Z5  
bjvi`jyL3k  
/* (non-Javadoc) [xE\IqwM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]\_4r)cN<n  
*/ w\@Anwj#L  
public void sort(int[] data) { L1D%vu`  
MaxHeap h=new MaxHeap(); p1|@F^Q  
h.init(data); |20p#]0E+  
for(int i=0;i h.remove(); S8]g'!  
System.arraycopy(h.queue,1,data,0,data.length); F`3 8sq  
} 5k\61(*s  
I`y}Ky<q  
private static class MaxHeap{ _C*}14 "3  
.79'c%3}  
void init(int[] data){ 3ea6g5kX  
this.queue=new int[data.length+1]; Pd@?(WQ  
for(int i=0;i queue[++size]=data; $Z;0/\r%  
fixUp(size); 9xWeVlfQ  
} a]ftE\99  
} s\KV\5\o  
\y0abxIHS  
private int size=0;  F-ijGGL#  
3-Ti'xM  
private int[] queue; i4uUvZ f  
RQh4RUm  
public int get() { _y8)jD"  
return queue[1]; \ (X~Z  
} dwmj*+  
D vK}UAj=  
public void remove() { fo5!d@Nv  
SortUtil.swap(queue,1,size--); 1YS{; y[o  
fixDown(1); D&]SPhX  
} gN(8T_r  
file://fixdown W/&cnp\  
private void fixDown(int k) { D+k5e=  
int j; 3 D+dM0wM  
while ((j = k << 1) <= size) { WAob"`8]  
if (j < size %26amp;%26amp; queue[j] j++; %+`$Lb?{  
if (queue[k]>queue[j]) file://不用交换 3 UBG?%!$f  
break; cl{;%4$9  
SortUtil.swap(queue,j,k); R[Pyrs!H  
k = j; VV?KJz=,W=  
} :PjHsNp;^  
} a[t2T jB  
private void fixUp(int k) { !v94FkS>  
while (k > 1) { $%sOL( r  
int j = k >> 1; 0h$23.  
if (queue[j]>queue[k]) $7lI Dt  
break; bl:.D~@  
SortUtil.swap(queue,j,k); =cg0o_q8  
k = j; H{9di\xnEm  
} ?mrG^TV^+r  
} !7Ta Vx}`(  
4WDh8U  
} #=+d;RdlW  
*y F 9_\n  
} CYs:P8^  
r1xN U0A  
SortUtil: i!jx jP  
- x@mS2  
package org.rut.util.algorithm; Svy bP&i|  
AEhh 6v  
import org.rut.util.algorithm.support.BubbleSort; Ll%[}C?~]?  
import org.rut.util.algorithm.support.HeapSort; yp_:] RE  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;#cb%e3  
import org.rut.util.algorithm.support.ImprovedQuickSort; \h?C G_|]  
import org.rut.util.algorithm.support.InsertSort; kC0F@'D  
import org.rut.util.algorithm.support.MergeSort; iIA&\'|;i  
import org.rut.util.algorithm.support.QuickSort; j:\MrYt0H  
import org.rut.util.algorithm.support.SelectionSort; XeKIue@_  
import org.rut.util.algorithm.support.ShellSort; pjWqI 6,  
F3i+t+Jt  
/** BUuNI_?M#5  
* @author treeroot K1]H~'  
* @since 2006-2-2 PW~+=,  
* @version 1.0 m "h{HgJd  
*/ +r"{$'{^  
public class SortUtil { 2 D>WIOX  
public final static int INSERT = 1; >7p?^*&7;  
public final static int BUBBLE = 2; AK} wSXF  
public final static int SELECTION = 3; "VRcR  
public final static int SHELL = 4; 4(f[Z9 iZ]  
public final static int QUICK = 5; w =^QIr%  
public final static int IMPROVED_QUICK = 6; &2d^=fih  
public final static int MERGE = 7; -uHD| }  
public final static int IMPROVED_MERGE = 8; -O:+?gG  
public final static int HEAP = 9; Xk8+m>   
O=?WI  
public static void sort(int[] data) { L#1Y R}m  
sort(data, IMPROVED_QUICK); 4siNY4i"  
} D .oX>L#:  
private static String[] name={ yF8 av=<{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" waz)jEk  
}; ]v{f!r=}  
, `ST Va-  
private static Sort[] impl=new Sort[]{ 0GK<l  
new InsertSort(), iC10|0%{  
new BubbleSort(), ;Kob]b  
new SelectionSort(), S!j=hj@qW  
new ShellSort(), ,]+P#eXgE  
new QuickSort(), $vlq]6V8  
new ImprovedQuickSort(), p%pM3<p  
new MergeSort(), c=p`5sN)  
new ImprovedMergeSort(), o{f|==<t3#  
new HeapSort() ze@NqCF  
}; iZ}  w>1  
UE3(L ^  
public static String toString(int algorithm){ ?5_~Kn%2  
return name[algorithm-1]; (LbAP9Zj#f  
} e[.c^Hw  
r9McCebIW  
public static void sort(int[] data, int algorithm) { e33j&:O  
impl[algorithm-1].sort(data); SR7$m<0t*  
} MB06=N  
(99P9\[p  
public static interface Sort { /n;Ll](ri  
public void sort(int[] data); /`McKYIP  
} FKRO0%M4}Z  
q1}HsTnBH  
public static void swap(int[] data, int i, int j) { 78zjC6}`  
int temp = data; e=ZwhRP  
data = data[j]; #-*7<wN   
data[j] = temp; D;VQoO  
} 2[6>h)  
} Y7(E<1Yx  
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10+5=?,请输入中文答案:十五