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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。 BG ] w2=  
插入排序: \l)Jb*t  
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package org.rut.util.algorithm.support; $ZnLYuGb  
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import org.rut.util.algorithm.SortUtil; *B<Ig^c  
/** 7oUecyoj  
* @author treeroot kp F")0qr  
* @since 2006-2-2 %LI[+#QE  
* @version 1.0 z}Y23W&sX  
*/ 3B*b d  
public class InsertSort implements SortUtil.Sort{ 4)- ?1?)  
Vyy;mEBg  
/* (non-Javadoc) KmF" Ccc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k55s-%Ayr  
*/ OYnxEdo7  
public void sort(int[] data) { o>Fc.$ngZ  
int temp; RWyDX_z#<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Vo1,{"k  
} s?-@8.@  
} 4Js2/s  
} ;/-v4  
{tS^Q*F  
} VTS7K2lBvX  
y $i^C:N  
冒泡排序: =*paa  
WY>r9+A?W  
package org.rut.util.algorithm.support; (L`7-6e(Ab  
18`YY\u(  
import org.rut.util.algorithm.SortUtil; Myj 5qh  
5(9SIj^O  
/** C8^h`B9z&I  
* @author treeroot `.oWmBey\  
* @since 2006-2-2 L@mNfLK  
* @version 1.0 o )\\(^ld  
*/ h=?V)WSM  
public class BubbleSort implements SortUtil.Sort{ +/"Ws '5E  
7hV9nuW  
/* (non-Javadoc) y4N8B:j%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]|H`?L  
*/ j 3/ I =  
public void sort(int[] data) { hk5[ N=  
int temp; ^nO0/nqz]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xi+bBqg<.K  
if(data[j] SortUtil.swap(data,j,j-1); ;)n kY6-  
} <@F.qMl  
} bQ%6z}r  
} \,n|V3#G  
} T[?wbYfW  
""~b1kEt  
} ~wejy3|@0  
Gy;>.:n  
选择排序: MWGs:tpL4  
Z--A:D>  
package org.rut.util.algorithm.support; c >O>|*I  
kdgU1T@y.  
import org.rut.util.algorithm.SortUtil; g4eEkG`XTS  
5{zmuv:  
/** J\@ r ~x5G  
* @author treeroot \*a7o GyH>  
* @since 2006-2-2 E =*82Y=B  
* @version 1.0 xX !`0T7Y  
*/ x]6-r`O7r  
public class SelectionSort implements SortUtil.Sort { |\}&mBR  
w}20l F  
/* h+\+9^l6|  
* (non-Javadoc) `7D]J*?`  
* Jn |sS(Q}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TTDcVG_}  
*/ zh.^> `   
public void sort(int[] data) { o [ Je  
int temp; eq" eLk6h  
for (int i = 0; i < data.length; i++) { @~=*W5  
int lowIndex = i; "_f~8f`y  
for (int j = data.length - 1; j > i; j--) { :eH*biXy}2  
if (data[j] < data[lowIndex]) { CI#6 r8u  
lowIndex = j; JJQS7,vG  
} mBwM=LAZ  
} _YK66cS3E/  
SortUtil.swap(data,i,lowIndex); w$)NW57[|  
} C {*' p+f  
} cD%_+@GaU  
@sr~&YhA  
} a<NZC  
Y:?cWO  
Shell排序: }O + a  
2iWS k6%R  
package org.rut.util.algorithm.support; 74wDf  
cj64.C  
import org.rut.util.algorithm.SortUtil; = :/4)  
`iQ])C^d  
/** B,5kG{2!  
* @author treeroot SzTa[tJ+  
* @since 2006-2-2 2FVO@D  
* @version 1.0 "y9]>9:$-  
*/ '+s?\X4VC  
public class ShellSort implements SortUtil.Sort{ R9&3QRW|  
+QW| 8b  
/* (non-Javadoc) '=WPi_Z5:C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ez-jVi-Fi  
*/ q\$k'(k>35  
public void sort(int[] data) { {i^F4A@=Z  
for(int i=data.length/2;i>2;i/=2){ $eq*@5B  
for(int j=0;j insertSort(data,j,i); G`e!WvC  
} R<<U(.E  
} e0$.|+  
insertSort(data,0,1); 5r` x\  
} p9y@5z  
Bjp4:;Bb  
/** W]W[oTJ5  
* @param data 5%jy7)8C  
* @param j n~Yr`5+Z  
* @param i rj ] ~g  
*/ KSYHG  
private void insertSort(int[] data, int start, int inc) { h}U>K4BJ  
int temp; Wt M1nnJp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B'v~0Kau  
} @kPe/j/[1  
} fq[1|Q  
} . #FJM2Xk  
Y6[ O s1  
} m S4N%Q  
'Ul^V  
快速排序: lD#S:HX  
xE5VXYU  
package org.rut.util.algorithm.support; b{Bef*`/  
edL sn>\*#  
import org.rut.util.algorithm.SortUtil; Vo;0i$  
;L@p|]fu  
/** O>LqpZ  
* @author treeroot zN&m-nrw  
* @since 2006-2-2 <'N~|B/yZ  
* @version 1.0 N[zR%(YS  
*/ [OYSNAs *y  
public class QuickSort implements SortUtil.Sort{ 8xb({e4  
7$JOIsM  
/* (non-Javadoc) ET[>kn^#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?dy t!>C  
*/ 4[ *G  
public void sort(int[] data) { 5 D <  
quickSort(data,0,data.length-1); MAc jWb~ f  
} ELZ@0,  
private void quickSort(int[] data,int i,int j){ @x@wo9<Fc  
int pivotIndex=(i+j)/2; UZ;FrQ(l{  
file://swap =lmelo#m&  
SortUtil.swap(data,pivotIndex,j); tPb<*{eG  
%w;wQ_  
int k=partition(data,i-1,j,data[j]); j%)@f0Ng  
SortUtil.swap(data,k,j); iLO,XW?d v  
if((k-i)>1) quickSort(data,i,k-1); o&)v{q  
if((j-k)>1) quickSort(data,k+1,j); Od+nBJ   
jpkKdQX)  
} 8 +mW  
/** +62}//_?  
* @param data  (,R\6  
* @param i A\})H  
* @param j U.Fs9F4M#  
* @return F*J bTEOn  
*/ J6mUU3F9f  
private int partition(int[] data, int l, int r,int pivot) { +O4//FC-"  
do{ ;qs^+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |,T"_R_K  
SortUtil.swap(data,l,r); `4,]Mr1b  
} zgl$ n  
while(l SortUtil.swap(data,l,r); s_P[lbHt.  
return l; * >k6n5%  
} KP_7h/e  
zHD 8 \*  
} u`"Y!*[ -  
 N8)]d  
改进后的快速排序: v)aV(Oa  
K_fJ{Vc>O  
package org.rut.util.algorithm.support; ? CU;  
2S//5@~_m  
import org.rut.util.algorithm.SortUtil; XCT3:db  
*rVI[k L  
/** wlDo(]mj=O  
* @author treeroot 8:U0M'}u>  
* @since 2006-2-2 epI~w  
* @version 1.0 oQR?H  
*/ t!59upbN}3  
public class ImprovedQuickSort implements SortUtil.Sort { .Ms$)1  
R@KWiV  
private static int MAX_STACK_SIZE=4096; w{riXOjS4  
private static int THRESHOLD=10; k- exqM2x=  
/* (non-Javadoc) t$PJ*F67M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (ZP e{;L.  
*/ 1U(!%},  
public void sort(int[] data) { cR/e Zfl  
int[] stack=new int[MAX_STACK_SIZE]; Gh}* <X;N  
hyY^$p+  
int top=-1; zVis"g`  
int pivot; P]7s1kgaS  
int pivotIndex,l,r; iV:\,<8d  
AD >/#Ul  
stack[++top]=0; 9hgIQl  
stack[++top]=data.length-1; 1[-RIN;U8  
rIX 40,`  
while(top>0){ gX(8V*os^  
int j=stack[top--]; x[R?hS,0 t  
int i=stack[top--]; X;v{,P=J  
MfraTUxIo/  
pivotIndex=(i+j)/2; 212 =+k  
pivot=data[pivotIndex]; X7SSTcA   
88}04  
SortUtil.swap(data,pivotIndex,j); b/4gs62{k  
N6v*X+4JH  
file://partition y2PxC. -  
l=i-1; &zPM# Q  
r=j; u1|v3/Q-  
do{ qv`:o `  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &{8[I3#@  
SortUtil.swap(data,l,r); ^y~oXS(  
} a?)g>e HN  
while(l SortUtil.swap(data,l,r); kdMB.~(K=  
SortUtil.swap(data,l,j); iig&O(,  
dB Hki*.u  
if((l-i)>THRESHOLD){ Is97>aid  
stack[++top]=i; UJ`%uLR~  
stack[++top]=l-1; 9lX[rBZ  
} V/)3d  
if((j-l)>THRESHOLD){ /x /W>J2  
stack[++top]=l+1; hysxHOL  
stack[++top]=j; 6wb M$|yFj  
} nTsPX Tat  
3]>YBbXvE  
} }'\M}YM  
file://new InsertSort().sort(data); z.W1Za  
insertSort(data); 7KtgR=-Lb  
} 4-\4G"4  
/** /sVmQqVY  
* @param data K,*IfHi6[  
*/ QzYaxNGv  
private void insertSort(int[] data) { JV! }"[  
int temp; r?x~`C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z=LO$,JW`  
} /Wy9 ".  
} efh1-3f  
} %Jn5M(myC  
)' 2vUt`_7  
} 5hB2:$C  
DE?@8k  
归并排序: =OR&,xt  
x_EU.924uY  
package org.rut.util.algorithm.support; ^Cg@'R9  
N mN:x&/  
import org.rut.util.algorithm.SortUtil; 6uFGq)4p@  
ND5E`Va5R  
/** /PkOF ((  
* @author treeroot lqKwjJ tX  
* @since 2006-2-2 C,u;l~zz  
* @version 1.0 .|K\1qGW0  
*/  uMBb=   
public class MergeSort implements SortUtil.Sort{ *1}vn%wvn  
^N~Jm&I  
/* (non-Javadoc) :wJ!rn,4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m>b i$Y  
*/ W*D*\E  
public void sort(int[] data) { .gI9jRdKw  
int[] temp=new int[data.length]; c:}K(yAdd  
mergeSort(data,temp,0,data.length-1); BCH I@a  
} wSs78c=  
<JJi  
private void mergeSort(int[] data,int[] temp,int l,int r){ &l~=c2  
int mid=(l+r)/2; S[uHPYhlA  
if(l==r) return ; .T*7nw  
mergeSort(data,temp,l,mid); POQ1K O  
mergeSort(data,temp,mid+1,r); g/,O51f'  
for(int i=l;i<=r;i++){ W&^2Fb  
temp=data; SiJX5ydz  
} ;Y16I#?;Kh  
int i1=l; /XW,H0pR  
int i2=mid+1; *$>$O%   
for(int cur=l;cur<=r;cur++){ >l5JwwG  
if(i1==mid+1) j8p'B-yS  
data[cur]=temp[i2++]; fKT(.VN q5  
else if(i2>r) d>7bwG+k  
data[cur]=temp[i1++]; 6d/b*,4[  
else if(temp[i1] data[cur]=temp[i1++]; fmq^AnKd  
else 6UJBE<ntj  
data[cur]=temp[i2++]; 4HDQj]z/  
} dzMI5fA<_  
} 4^B:Q9B)  
Py,@or7n  
} ?jzadCel  
cl-i6[F  
改进后的归并排序: x9CI>l  
UJF }Ye  
package org.rut.util.algorithm.support; DSHpM/7  
5 *>3(U  
import org.rut.util.algorithm.SortUtil; ]# T9v06w  
WJL,L[XC  
/** ]t3 NA*mM  
* @author treeroot P.1iuZ "w  
* @since 2006-2-2 I!Za2?  
* @version 1.0 `P4qEsZE>`  
*/ VVje|T^{Z  
public class ImprovedMergeSort implements SortUtil.Sort { }fs;yPl,  
)+9D$m=P;  
private static final int THRESHOLD = 10; egi?Qg  
G8?<(.pi@  
/* K+mtuB]yr  
* (non-Javadoc) Qi7^z;  
* ,K6]Q|U@r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j|(bDa4\  
*/ ArU>./)Q  
public void sort(int[] data) { BmUzsfD  
int[] temp=new int[data.length]; Xl*-A|:j  
mergeSort(data,temp,0,data.length-1); ;3sT>UB  
} Sb[rSczS~  
T}]Ao  
private void mergeSort(int[] data, int[] temp, int l, int r) { {UZli[W1  
int i, j, k; [l5 "'{x  
int mid = (l + r) / 2; JnY3]  
if (l == r) p N]Hp"v  
return; cCV"(Oo[H|  
if ((mid - l) >= THRESHOLD) |I+E`,n"b  
mergeSort(data, temp, l, mid); L}a3!33)C  
else n8G#TQrAE  
insertSort(data, l, mid - l + 1); 1I^Sv  
if ((r - mid) > THRESHOLD) p go\(K0  
mergeSort(data, temp, mid + 1, r); 3Yj}ra}  
else Jp-ae0 Ewa  
insertSort(data, mid + 1, r - mid); ?s"v0cg+  
*E)Y?9u"  
for (i = l; i <= mid; i++) { M*S5&xpX  
temp = data; 4l`gAE$  
} 8:xQPd?3  
for (j = 1; j <= r - mid; j++) { j'J*QK&Q  
temp[r - j + 1] = data[j + mid]; 8rpN2M 3h  
} S8)awTA9  
int a = temp[l]; \!V6` @0KC  
int b = temp[r]; 0\~Zg  
for (i = l, j = r, k = l; k <= r; k++) { eXaDx%mM  
if (a < b) { TQ2Tt "  
data[k] = temp[i++]; _5Ll L#)  
a = temp; [1UqMkXtf  
} else { GQZUC\cB  
data[k] = temp[j--]; _INUJc  
b = temp[j]; 9,c>H6R7  
} Cp* n2  
} ,/ : )FV  
} vxt^rBA  
=% JDo  
/** )yK!qu  
* @param data I^|bQ3sor  
* @param l '} kq@  
* @param i ;i#gk%- 2  
*/ ^,5.vfES  
private void insertSort(int[] data, int start, int len) { ^9RBG#ud  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g0U ?s  
} z} \9/`  
} rN~`4mZ  
} By_Ui6:D  
} Mww]l[1'EL  
D{l((t3=T  
堆排序: .0|J+D  
yW&i Uh=0  
package org.rut.util.algorithm.support; !jW32$YTR  
"%]dC {  
import org.rut.util.algorithm.SortUtil; w g1pt1 `  
HlSuhbi'@  
/** wm8x1+P  
* @author treeroot "J1ar.li  
* @since 2006-2-2 8dhY"&  
* @version 1.0 .-AB o]hf  
*/ 80EY7#r@w  
public class HeapSort implements SortUtil.Sort{ V"ZbKV +[  
g3XAs@  
/* (non-Javadoc) |@HdTGD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z>:7}=H0  
*/ jb2:O,+!  
public void sort(int[] data) { a=FRJQ8S  
MaxHeap h=new MaxHeap(); u3:Qt2^S  
h.init(data); gNd J=r4  
for(int i=0;i h.remove(); YeLOd  
System.arraycopy(h.queue,1,data,0,data.length); Sv@p!-m  
} 1#<E]<='t  
}(K6 YL  
private static class MaxHeap{ hI8C XG  
g4 X,*H  
void init(int[] data){ #U}U>4'  
this.queue=new int[data.length+1]; F udD  
for(int i=0;i queue[++size]=data; GvOAs-$  
fixUp(size); QO.gt*"  
} $rEd5W&d!  
} jZ!JXmVV  
eLny-.i ,7  
private int size=0; 0Y 2^}u@5  
[BBKj)IK  
private int[] queue; F/SsiUBS  
Cpcd`y=IN  
public int get() { h$k3MhYDes  
return queue[1]; '>Y 2lqa  
} =7Vl{>*1N  
Z5L1^  
public void remove() { zYdtQjv  
SortUtil.swap(queue,1,size--); i@Zj 7#e*  
fixDown(1); J\'5CG  
} rb'GveW[  
file://fixdown `Qf :PX3  
private void fixDown(int k) { \cP'#jZz  
int j; }GDG$QI]K&  
while ((j = k << 1) <= size) { !nq\x8nU  
if (j < size %26amp;%26amp; queue[j] j++; 0Zh _Q  
if (queue[k]>queue[j]) file://不用交换 8M9\<k6  
break; nln6:^w  
SortUtil.swap(queue,j,k); S "Pj 1  
k = j; wPJRp]FA  
} #cG479X"  
} [B3aRi0AQ  
private void fixUp(int k) { ~!F4JRf  
while (k > 1) { [?@wCY4=  
int j = k >> 1; BkxhF  
if (queue[j]>queue[k]) Bq]O &>\hX  
break; ('q vYQ  
SortUtil.swap(queue,j,k); az;jMnPpR5  
k = j; s;7qNwYO  
} %*c|[7Z~V  
} (iOCzZ6S  
/^ 3oq]  
} kO_XyC4(  
N"RYM~c7  
} "%Ana=cc  
m%c0#=D  
SortUtil: F}(QKO*  
n E}<e:  
package org.rut.util.algorithm; Ygi1"X}  
FP'lEp  
import org.rut.util.algorithm.support.BubbleSort; 1`]IU_)1B  
import org.rut.util.algorithm.support.HeapSort; <-:@} |br  
import org.rut.util.algorithm.support.ImprovedMergeSort; J%:/<uCmZ  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4)+IO;  
import org.rut.util.algorithm.support.InsertSort; %Rep6=K*$  
import org.rut.util.algorithm.support.MergeSort; p <=%  
import org.rut.util.algorithm.support.QuickSort; !NLvo_[Y  
import org.rut.util.algorithm.support.SelectionSort; DsJn#>?Kh  
import org.rut.util.algorithm.support.ShellSort; SWjQ.aM  
Q!Ow{(|  
/** ~po%GoH(K  
* @author treeroot Va Yu%  
* @since 2006-2-2 &^n> ZY,  
* @version 1.0 rk,1am:cg  
*/ g~c|~u(W  
public class SortUtil { Tj21YK.mk  
public final static int INSERT = 1; ~]W[ {3 ;  
public final static int BUBBLE = 2; O| J`~Lk  
public final static int SELECTION = 3; u] U)d$|  
public final static int SHELL = 4; 9jR[:[  
public final static int QUICK = 5; 8$v zpu  
public final static int IMPROVED_QUICK = 6; /;NE]{K  
public final static int MERGE = 7; Bd9hf`% 2  
public final static int IMPROVED_MERGE = 8; +lgF/y6  
public final static int HEAP = 9; gMBQtPNM  
2K rqY  
public static void sort(int[] data) { L;M^>{>  
sort(data, IMPROVED_QUICK); s"',370  
} `}~ )1'(#/  
private static String[] name={  Q A)9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6~F#F)C'  
}; c Z6p^  
P% +or*  
private static Sort[] impl=new Sort[]{ Wda\a.bXT  
new InsertSort(), P"9@8aLB  
new BubbleSort(), vDW&pF_eI>  
new SelectionSort(), 4l ZJb  
new ShellSort(), HKiVEg  
new QuickSort(), H*{k4  
new ImprovedQuickSort(), dmaqXsU8q  
new MergeSort(), ?D(FNd  
new ImprovedMergeSort(), } }f_  
new HeapSort() K)Zkj"y  
}; #5-A&  
Xvu)  
public static String toString(int algorithm){ P 0Efh?oZ  
return name[algorithm-1]; Y$x"4=~  
} R] Disljq  
"VDk1YX_&l  
public static void sort(int[] data, int algorithm) { G&@-R{i  
impl[algorithm-1].sort(data); nR o=J5tY  
} X"k^89y$  
9eGCBVW:*  
public static interface Sort { hg&w=l  
public void sort(int[] data); Q)G!Y (g\  
} Kunle~Ro  
&$m=^  
public static void swap(int[] data, int i, int j) { 3V/_I<y  
int temp = data; xHv|ca.E  
data = data[j]; x[PEn  
data[j] = temp; q8?= *1g  
} ,TF<y#wed  
} #u8*CA9  
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