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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。 *cb D&R\  
插入排序: 7oqn;6<[>,  
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package org.rut.util.algorithm.support; ]ZU:%Qhu  
KY(l<pm  
import org.rut.util.algorithm.SortUtil; [W8iM7D  
/** (pRy1DH~  
* @author treeroot Rzn0-cG  
* @since 2006-2-2 F?+Uar|-a  
* @version 1.0 |tolgdj  
*/ o+6^|RP  
public class InsertSort implements SortUtil.Sort{ J T0,Z  
!@]h@MC$7  
/* (non-Javadoc) $O8EiC!f6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h\: tUEg#J  
*/ <whPM  
public void sort(int[] data) { 6{F S /+  
int temp; ^QHMN 7r/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h>`'\qy  
} j_YZ(: =  
} 5D02%U2N)G  
} #/ gme  
)4o=t.O\K  
} ,:Rq  
6lH>600]u  
冒泡排序: @Tm0T7C  
EssUyF-jwU  
package org.rut.util.algorithm.support; -$!Pf$l@  
Af! W K=  
import org.rut.util.algorithm.SortUtil; 7+2aG  
*F4G qX3  
/** 6u]OXP A|  
* @author treeroot   _c7  
* @since 2006-2-2 kdueQ(\  
* @version 1.0 s"^YW+HMb  
*/ qT-nD}  
public class BubbleSort implements SortUtil.Sort{ yrv SbqR  
A5>gLhl7  
/* (non-Javadoc) SUFaHHk@/b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L^ jC& dF  
*/ YQ[&h  
public void sort(int[] data) { 9Av- ;!]  
int temp; ~?8 x0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4 *2>R8SX~  
if(data[j] SortUtil.swap(data,j,j-1); %_X[{(  
} =w>>7u$4  
} bMK'J  
} MdTd$ 4J3  
} !?>p]0*<  
OmUw.VH  
} Zn=JmZ  
]\b1~ki!F  
选择排序: vEee/+1?  
kHIQ/\3?Q  
package org.rut.util.algorithm.support; [ QL<&:s&  
G QB^  
import org.rut.util.algorithm.SortUtil; HI`A;G]  
d-S'y-V?d  
/** '' A[`,3  
* @author treeroot 1J%qbh  
* @since 2006-2-2 $R#L@iL-  
* @version 1.0 8@C|exAD`  
*/ 4>tYMyLt0  
public class SelectionSort implements SortUtil.Sort { $!3t$-TSD  
gS o(PW)  
/* L5N{ie_  
* (non-Javadoc) e^fKatI1  
* b+#~N>|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @^4M~F%  
*/ k~EPVJh"  
public void sort(int[] data) { M&\?)yG  
int temp; ;cHI3V  
for (int i = 0; i < data.length; i++) { fyoB]{$p8  
int lowIndex = i; aZ:?(u]  
for (int j = data.length - 1; j > i; j--) { !iz vY  
if (data[j] < data[lowIndex]) { ^Th"`Av5  
lowIndex = j; L" ^366M!  
} 0 Ln5e.&  
} oP`M\KXau  
SortUtil.swap(data,i,lowIndex); o%JIJ7M  
} Xs,PT  
} F>-@LOqHy  
\rnG 1o  
} FoXQ]X7"  
-v+^x`HR  
Shell排序: BNm va  
59J$SE  
package org.rut.util.algorithm.support; umn~hb5O  
fvfVBk#  
import org.rut.util.algorithm.SortUtil; o 0 #]EMr  
U$JIF/MO_  
/** WsDe0F  
* @author treeroot >\x 39B  
* @since 2006-2-2 ]SR`96vG  
* @version 1.0 "^e?E:( 3  
*/ h}<ZZ  
public class ShellSort implements SortUtil.Sort{ 5Cyjq0+  
t4c#' y  
/* (non-Javadoc) imq(3?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =]mx"0i[  
*/ =sVt8FWGY  
public void sort(int[] data) { Ck a]F2,  
for(int i=data.length/2;i>2;i/=2){ YqCK#zT/  
for(int j=0;j insertSort(data,j,i); *xVAm7_v  
} |(ju!&  
} "LaX_0t)  
insertSort(data,0,1); 54DR.>O  
} M@@O50~  
?v~3zHK  
/** *pUV-^uo  
* @param data xVX||rrh  
* @param j ]c=1-Rl  
* @param i 0BD((oNg  
*/ "fJ|DE&@<i  
private void insertSort(int[] data, int start, int inc) { &+iW:  
int temp; 3s$.l }  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); To? bp4  
} a-2 {x2O  
}  Hu2g (!  
} :R\v# )C  
:Rx"WY  
} la7QN QW  
n k3lC/f  
快速排序: ",_  
fR;_6?p*B  
package org.rut.util.algorithm.support; TN_$E&69I  
C}EDl2  
import org.rut.util.algorithm.SortUtil; -{SiK  
B;je|M!d  
/** ^#nWgo7{7  
* @author treeroot l<%~w U  
* @since 2006-2-2 ,w>?N\w!}  
* @version 1.0 3m7V6##+  
*/ )Dpt<}}\  
public class QuickSort implements SortUtil.Sort{ ^{bEq\5&  
[ [CXMbD`*  
/* (non-Javadoc) o_m.MMEU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g$LwXfg  
*/ ^i1:PlW]  
public void sort(int[] data) { dph6aN(49  
quickSort(data,0,data.length-1); *lO+^\HXD  
} TBT*j&!L  
private void quickSort(int[] data,int i,int j){ +Z]%@"S?  
int pivotIndex=(i+j)/2; DQnWLC"u  
file://swap _oVA0@#n  
SortUtil.swap(data,pivotIndex,j); ?{")Wt  
5)<jPyC  
int k=partition(data,i-1,j,data[j]); (.+n1)L?  
SortUtil.swap(data,k,j); B`EgL/Wg[  
if((k-i)>1) quickSort(data,i,k-1); uNBhVsM6<  
if((j-k)>1) quickSort(data,k+1,j); dF]8>jBOL  
| :[vpJFK  
} P?7b,a95O  
/** a[l5k  
* @param data mj|9x1U)  
* @param i dq(L1y870  
* @param j e1Hx"7ew_  
* @return K a|\gl;V  
*/ @1Lc`;Wd  
private int partition(int[] data, int l, int r,int pivot) { >f8,YisH  
do{ !WnI`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ji=po;g=E  
SortUtil.swap(data,l,r); z59J=?|  
} S,%HW87  
while(l SortUtil.swap(data,l,r); S`KCVQ>V  
return l; nJg2O@mRJ  
} rM |RGe  
m/Z_HER^  
} hh}EDnx  
:h~!#;w_  
改进后的快速排序: <2d@\"AoHE  
\M@8# k|  
package org.rut.util.algorithm.support; h_!"CF <n  
5Oq;V: 7  
import org.rut.util.algorithm.SortUtil; Vrh],xK7  
tn1aH +  
/** WQL`;uIX  
* @author treeroot $g;xw?~#  
* @since 2006-2-2 }iAi`_\0;  
* @version 1.0 ~T9[\nU\  
*/ #9Z-Hd<  
public class ImprovedQuickSort implements SortUtil.Sort { &nP rozC  
k]g\` gc  
private static int MAX_STACK_SIZE=4096; {jG`l$$  
private static int THRESHOLD=10; ,cEcMaJ  
/* (non-Javadoc) gK#w$s50  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pC8i &_A  
*/ [Nc  Ok,  
public void sort(int[] data) { ic#drpl,  
int[] stack=new int[MAX_STACK_SIZE]; @eWx4bl  
_R6> Ayw*  
int top=-1; 1[]cMyV  
int pivot; DUr1s]+P  
int pivotIndex,l,r; ~]W8NaQB(  
_jz=BRO$  
stack[++top]=0; $ 1ZY Vw  
stack[++top]=data.length-1; X9HI@M]h  
OpQa!  
while(top>0){ hg @Jpg  
int j=stack[top--]; h@d m:=ul  
int i=stack[top--]; = xk@Q7$  
}1dh/Cc`  
pivotIndex=(i+j)/2; Tp13V.|  
pivot=data[pivotIndex]; LAeXe!y  
_T$\$v$ {  
SortUtil.swap(data,pivotIndex,j); T-TH. R  
1-#tx*>AY  
file://partition  tS7u#YMh  
l=i-1; 3F1Z$d(  
r=j; ehq6.+l  
do{ }o4Cd$,8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  2Mda'T8  
SortUtil.swap(data,l,r); kn\>ZgU  
} |z%,W/Ef  
while(l SortUtil.swap(data,l,r); =Wa\yBj_;m  
SortUtil.swap(data,l,j); cw\a,>]H  
x7?{*w&r  
if((l-i)>THRESHOLD){ P'8 E8_M}  
stack[++top]=i; Apn#o2  
stack[++top]=l-1; *&D=]fG  
} -E7\ .K3  
if((j-l)>THRESHOLD){ Cn<x  
stack[++top]=l+1; ?x97 q3I+]  
stack[++top]=j; K~]jXo^M  
} NL 37Y{b  
`upNP/,  
} vkK+ C~"  
file://new InsertSort().sort(data); \bfHGo=  
insertSort(data); RAC-;~$WB  
} ./d (@@  
/** cx|j _5%i  
* @param data $/H'Dt6x  
*/ G. }yNjL8  
private void insertSort(int[] data) { zBbTj IFQ  
int temp; ?*4zNhL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "^H+A-R[  
} \<} nn?~n  
} L;"<8\vWB  
} jo ^*R'}  
i  *<,@*  
} fVM%.`  
i ?>"}h  
归并排序: ?HY0@XILI  
dQ[lXV[}v  
package org.rut.util.algorithm.support; e9d~Xi16KY  
}W<L;yD  
import org.rut.util.algorithm.SortUtil; l- l}xBf  
B.?yHaMI[  
/** iJi|*P5dw  
* @author treeroot  oa|0=  
* @since 2006-2-2 L*z;-,  
* @version 1.0 P*SXfb"HC  
*/ aI{[W;43T  
public class MergeSort implements SortUtil.Sort{ kBzzi^cl  
gT.-Cf{  
/* (non-Javadoc) m"*:XfOL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RY'y%6Z]ZO  
*/ oZ}e w!V  
public void sort(int[] data) { g:Dg?_o  
int[] temp=new int[data.length]; X'c5s~9  
mergeSort(data,temp,0,data.length-1); luMNi^FQ  
} OjN]mp-q  
B:4u 2/!5  
private void mergeSort(int[] data,int[] temp,int l,int r){ <7GK *I  
int mid=(l+r)/2; jK=[   
if(l==r) return ; Cv|:.y  
mergeSort(data,temp,l,mid); 0\+Qi?&  
mergeSort(data,temp,mid+1,r); ? _W*7<  
for(int i=l;i<=r;i++){ z+b~#f3  
temp=data; 181P;R=}<  
} t`AD9 H"\!  
int i1=l; N]duv~JS  
int i2=mid+1; CqoL5qt  
for(int cur=l;cur<=r;cur++){ J.<m@\U  
if(i1==mid+1) j- A|\:   
data[cur]=temp[i2++]; f_7p.H6\  
else if(i2>r) `&_qK~&/X  
data[cur]=temp[i1++]; 073(xAkL{  
else if(temp[i1] data[cur]=temp[i1++]; % Y @3)  
else 8^{BuUA  
data[cur]=temp[i2++]; 7v-C-u[E`  
} Lg^m?~{  
} (/Ubw4unI  
g@QpqrT  
} h2q]!01XP  
5?b9[o+ D  
改进后的归并排序: ; H3kb +  
#'T|,xIr-Q  
package org.rut.util.algorithm.support; /$n${M5!  
8X%;29tow  
import org.rut.util.algorithm.SortUtil; $\bH 5|Hk]  
@:[/uqL  
/** U0rz 4fxc  
* @author treeroot &^<94l  
* @since 2006-2-2 I$Z"o9"  
* @version 1.0 +|.#<]GA  
*/ iJYr?3nw;  
public class ImprovedMergeSort implements SortUtil.Sort { F JzjS;  
DirWe  
private static final int THRESHOLD = 10; t3M/ThIE  
, ?%`Ky/  
/* TX>;2S3q   
* (non-Javadoc) b &JPLUr  
* gFKQm(0g2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VYF4q9  
*/ p;@PfhEz)  
public void sort(int[] data) { rN}^^9  
int[] temp=new int[data.length]; O^f@ g l  
mergeSort(data,temp,0,data.length-1); TC2aD&cw{  
} yqK82z5U*R  
?eu=0|d  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3]!(^N>V  
int i, j, k; r[gV`khka  
int mid = (l + r) / 2; .,c8cq?  
if (l == r) ;7hf'k  
return; !yxb<  
if ((mid - l) >= THRESHOLD) a%AU9?/q#  
mergeSort(data, temp, l, mid); C{c (K!  
else :70oO}0m.  
insertSort(data, l, mid - l + 1); u4S3NLG)  
if ((r - mid) > THRESHOLD) dlW w=^  
mergeSort(data, temp, mid + 1, r); D1w_Vpz  
else :>,d$f^tqE  
insertSort(data, mid + 1, r - mid); M6e"4Gh  
H1l' \  
for (i = l; i <= mid; i++) { os2yiF",   
temp = data; u%|VmM>  
} X)yTx8v4  
for (j = 1; j <= r - mid; j++) { S&VN</p  
temp[r - j + 1] = data[j + mid]; ]\jhtC=2  
} J@Li*Ypo  
int a = temp[l]; q)P<lKi  
int b = temp[r]; P`"dj@1'  
for (i = l, j = r, k = l; k <= r; k++) { 9@h>_1RJz  
if (a < b) { C }!$'C|  
data[k] = temp[i++]; ^)SvH  
a = temp; Z?GC+hG`  
} else { aqMZ%~7  
data[k] = temp[j--]; {ng  
b = temp[j]; >uQ!B/C!  
} 9u:MF0:W  
} z` sH  
} l/TH"z(  
We" "/X  
/** wHAh6lm  
* @param data 'n=FBu ^  
* @param l bDr'W   
* @param i D`LwW` 9  
*/ rz3&khi  
private void insertSort(int[] data, int start, int len) { A1:Fe9q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); p0@iGyd  
} rf9RG!  
} i P/I% D  
} *kDXx&7B$  
} uZqo"  
v.\&gn(  
堆排序: ]$z~;\T  
<cl$?].RE!  
package org.rut.util.algorithm.support; ]AN)M>  
] $%{nj<  
import org.rut.util.algorithm.SortUtil; s#d>yx_b  
E=LaPjEIj  
/** bT8BJY%+  
* @author treeroot HkQ2G}<  
* @since 2006-2-2 p}j{ <y  
* @version 1.0 +oyc9PoXF  
*/ ;B7>/q;g  
public class HeapSort implements SortUtil.Sort{ Y(&phv&  
p>MX}^6  
/* (non-Javadoc) !D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'dx4L }d  
*/ H\O|Y@uVr  
public void sort(int[] data) { wngxVhu8Ld  
MaxHeap h=new MaxHeap(); VB[R!S=  
h.init(data); *{C)o0D  
for(int i=0;i h.remove(); Q,s,EooIx  
System.arraycopy(h.queue,1,data,0,data.length); <H$CCo  
} ']qC,;2  
MY0Wr%@#0  
private static class MaxHeap{ KYlWV<sR  
5uu{f&?u)  
void init(int[] data){ +8~S28"Wg3  
this.queue=new int[data.length+1];  R z[-  
for(int i=0;i queue[++size]=data; ~M <4HC  
fixUp(size); 7C&`i}/t  
} #!<x|N?_<  
} u'=#~'6  
SK-|O9Ki  
private int size=0; q6osRK*20  
K7CiICe  
private int[] queue; PZ"xW0"-  
%.Mtn%:I *  
public int get() { 0ai4%=d-  
return queue[1]; {(t (}-:Z  
} S;CT:kG6Y{  
,,@_r&f:  
public void remove() { +|o -lb  
SortUtil.swap(queue,1,size--); of(Nq@  
fixDown(1); [TNYPA> {  
} [t ^|l?  
file://fixdown `5>IvrzXrK  
private void fixDown(int k) { XbHcd8N T  
int j; Bw{W-&$o  
while ((j = k << 1) <= size) { E6n;_{Se/S  
if (j < size %26amp;%26amp; queue[j] j++; <@Ew-JU  
if (queue[k]>queue[j]) file://不用交换 ?lbX.+  
break; }}ogdq  
SortUtil.swap(queue,j,k); *aTM3k)Zs  
k = j; >+8mq]8^  
} Q>X ;7nt0  
} Phx/9Kk  
private void fixUp(int k) { a8dR.  
while (k > 1) { ."3 J;j  
int j = k >> 1; 5|AZ/!rb  
if (queue[j]>queue[k]) Ju:=-5r"'  
break; dAga(<K  
SortUtil.swap(queue,j,k); 89WuxCFS  
k = j; jkfI,T  
} 2wu 5`Z[E  
} m@jOIt!<  
+L_.XToq-  
} &npf %Eub  
CNP?i(Rk  
} q.MM|;_u`  
!&#CEF@J  
SortUtil: xv1$,|^ts  
$'e.bh  
package org.rut.util.algorithm; `5x,N%9{  
-'ZP_$sA  
import org.rut.util.algorithm.support.BubbleSort; |QHWX^pO  
import org.rut.util.algorithm.support.HeapSort; Q,jlKgB 5:  
import org.rut.util.algorithm.support.ImprovedMergeSort; !3Pl]S~6!  
import org.rut.util.algorithm.support.ImprovedQuickSort; /wIZ '  
import org.rut.util.algorithm.support.InsertSort; sz}Nal$AC  
import org.rut.util.algorithm.support.MergeSort; DNL TJrN  
import org.rut.util.algorithm.support.QuickSort; z?V> ST  
import org.rut.util.algorithm.support.SelectionSort; 4N*^%  
import org.rut.util.algorithm.support.ShellSort; D:){T>  
+!w?g/dV  
/** #Xsby  
* @author treeroot dU+1@_  
* @since 2006-2-2 ,(lD5iN  
* @version 1.0 bXtA4O  
*/ K)^.96{/@  
public class SortUtil { H#6J7\xcS  
public final static int INSERT = 1; fDqlN`P@  
public final static int BUBBLE = 2; smk0*m4  
public final static int SELECTION = 3; Ot v{#bB$  
public final static int SHELL = 4; 4;%=ohD:!  
public final static int QUICK = 5; ))eR  
public final static int IMPROVED_QUICK = 6; js2?t~E]  
public final static int MERGE = 7; aIkxN&  
public final static int IMPROVED_MERGE = 8; p%j@2U  
public final static int HEAP = 9; _gU [FUBtJ  
$BNn1C8[  
public static void sort(int[] data) { bZa?h.IF  
sort(data, IMPROVED_QUICK); ]jM D'vg^b  
} KxiZx I  
private static String[] name={ ;m;wSp  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'd/A+W  
}; ;r8,Wx@f1C  
ZVda0lex&  
private static Sort[] impl=new Sort[]{ .llAiv  
new InsertSort(), ]\Ez{MdAT  
new BubbleSort(), 3`-[95w  
new SelectionSort(), t$s)S>  
new ShellSort(), qE(`@G  
new QuickSort(), @ /c{gD  
new ImprovedQuickSort(), `SOaQ|H  
new MergeSort(), p61"a,Xc  
new ImprovedMergeSort(), 5%+T~ E*  
new HeapSort() (A"oMnjWd  
}; vW~_+:),e  
mb?yG:L=0b  
public static String toString(int algorithm){ HaLEQ73  
return name[algorithm-1]; A7ck-9dT/L  
} 6 0QElJ9D  
%#|S  
public static void sort(int[] data, int algorithm) { idz6m]{~yT  
impl[algorithm-1].sort(data); BXm{x6\  
} Xa%Z0% {  
hydn" 9;  
public static interface Sort { -@AGQ+e  
public void sort(int[] data); 6`%}s3Xq  
} r`6XF  
8CMI\yk  
public static void swap(int[] data, int i, int j) { QULrE+@  
int temp = data; 4yjAi@ /2  
data = data[j]; _3ZZ-=J:=*  
data[j] = temp; 'L=g(  
} >YPfk=0f0  
} >oLM2VJ  
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