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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。 9SeGkwec?$  
插入排序: oI -Fr0!  
S+06pj4Ie  
package org.rut.util.algorithm.support; q-t%spkl  
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import org.rut.util.algorithm.SortUtil; n`= S&oKH  
/** 8nI~iN?"   
* @author treeroot k?h{ 6Qd  
* @since 2006-2-2 m LajiZ Bf  
* @version 1.0 ~jw:4sG  
*/ -v9(43  
public class InsertSort implements SortUtil.Sort{ 5tv*uz|fv  
X)SUFhP\  
/* (non-Javadoc) 8!v|`Ky  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w'}s'gGE  
*/ n^QDMyC;I  
public void sort(int[] data) { 5S? "<+J'  
int temp; qF3S\ C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nxN("$'cq  
} 'tTlBf7#  
} NH/jkt&F[  
} fXevr `  
gs2qLb  
} 3Dc^lfn  
'q9Ejig  
冒泡排序: -T+yS BO_3  
R&s/s`pLW  
package org.rut.util.algorithm.support; W9cvxsox  
@uC-dXA"  
import org.rut.util.algorithm.SortUtil; Rt%Dps%  
N+SA$wG  
/** Ge$&k  
* @author treeroot PvUY Q>Kw  
* @since 2006-2-2 Q m9b:U~  
* @version 1.0 b<fN,U< k  
*/ Wm8BhO  
public class BubbleSort implements SortUtil.Sort{ FIn)O-<  
EHe-wC  
/* (non-Javadoc) m$Tt y[0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rGH7S!\AM  
*/ Ahd{f!  
public void sort(int[] data) { Z[+Qf3j}o6  
int temp; T5~Qfl?Y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ X pXhg*}K  
if(data[j] SortUtil.swap(data,j,j-1); KJ?/]oLr0  
} ]H:K$nmX  
} Zfu" 8fX  
} UIQ=b;J9  
} #l2WRw_t  
VAxk?P0j6  
} 0g#?'sD  
:Z ]E:f0P  
选择排序: DF#WQ8?$]  
d\z':d .Tt  
package org.rut.util.algorithm.support; Q6Zh%\+h(  
p|Fhh\,*`X  
import org.rut.util.algorithm.SortUtil; -JF|770i  
Q~*3Z4)j  
/** hG'2(Y!  
* @author treeroot \v_t: "  
* @since 2006-2-2 FHH2  
* @version 1.0 qpc2;3*7  
*/ }\ui} \  
public class SelectionSort implements SortUtil.Sort { CtDS lJ  
eWx6$_|  
/* &4MVk3SLx#  
* (non-Javadoc) H+2J.&Ch  
* [dL?N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e$(i!G)  
*/ M/sqOhg  
public void sort(int[] data) { ?Ve5}N  
int temp; &<i>)Ss  
for (int i = 0; i < data.length; i++) { FkE CY  
int lowIndex = i; /[#{#:lo2  
for (int j = data.length - 1; j > i; j--) { 7!N5uR  
if (data[j] < data[lowIndex]) { 1 }q[8q  
lowIndex = j; 1y8:tri>N  
} ! xqG-rd '  
} yM D* >8/  
SortUtil.swap(data,i,lowIndex); NtOR/*  
} LveqG   
} %J%gXk}]  
iii$)4V  
} +#H8d1^5  
c!\y\r  
Shell排序: i+cGw  
u]MF r2  
package org.rut.util.algorithm.support; {:FITF3o  
Tx_(^K  
import org.rut.util.algorithm.SortUtil; ujWHO$uz!  
YL=k&Q G  
/** ta6 WZu  
* @author treeroot 6$dm-BI  
* @since 2006-2-2 Q#r 0DWo\  
* @version 1.0 OB^2NL~Q~  
*/ %Z5k8  
public class ShellSort implements SortUtil.Sort{ 1W!n"3#  
Z "=(u wM  
/* (non-Javadoc) < 5_Ys  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yaR;  
*/ J+|ohA  
public void sort(int[] data) { kL|Y-(FPo%  
for(int i=data.length/2;i>2;i/=2){ imhq*f#A[  
for(int j=0;j insertSort(data,j,i); c_a$g  
} l{a&Zy)  
} t5Mo'*j =  
insertSort(data,0,1); yl ;'Ru:  
} *(MvNN*  
Y)*lw  
/** l=]vC +mU  
* @param data 8W[]#~77b  
* @param j 1;gSf.naG  
* @param i B;~agr  
*/ bgK(l d`  
private void insertSort(int[] data, int start, int inc) { `^ _:  
int temp; |YFD|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~&/Gx_KU  
} e`Yns$x  
} FOA%( 5$4  
} ">9CN$]J  
m'B6qy!}6  
} a !K;8#xc  
RGLA}|  
快速排序: a&hM:n4P  
cj<@~[uw  
package org.rut.util.algorithm.support; y)E2=JQA/  
n_Y]iAoc`  
import org.rut.util.algorithm.SortUtil; s- V$N  
~\G3 l,4  
/** vrv*k  
* @author treeroot e"6i >w!  
* @since 2006-2-2 B^?XE(.  
* @version 1.0 wcf_5T  
*/ vNSf:5H$  
public class QuickSort implements SortUtil.Sort{ 3p W MS&  
LeyDs>! 0  
/* (non-Javadoc) 5,ahKB8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6w;|-/:`  
*/ |u;PU`^-z  
public void sort(int[] data) { q)b?X ^  
quickSort(data,0,data.length-1); iGMONJRO  
} s*~o%emw  
private void quickSort(int[] data,int i,int j){ ?\M6P?tpo&  
int pivotIndex=(i+j)/2; ]?`p_G3O  
file://swap QJM!Wx+  
SortUtil.swap(data,pivotIndex,j); 9lJj/  
%:?QE ;  
int k=partition(data,i-1,j,data[j]); ha! "BR  
SortUtil.swap(data,k,j); ~J{[]wi  
if((k-i)>1) quickSort(data,i,k-1); f {Z%:H  
if((j-k)>1) quickSort(data,k+1,j); oD@jtd>b%  
+|YZEC  
} =>\-ma+  
/** {dXBXC/Ju  
* @param data /t)c fFM  
* @param i otD?J= B  
* @param j  r;X0 B  
* @return ~C7<a48x  
*/ rOb"S*  
private int partition(int[] data, int l, int r,int pivot) { .r5oN+?e  
do{ ?lN8~Ze  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kseJm+Hc  
SortUtil.swap(data,l,r); YQdX>k  
} 2 U`W[  
while(l SortUtil.swap(data,l,r); 'Sy *'&  
return l; S5u#g`I]  
} A{x 7  
DbU;jorwu  
} ]j2v"n  
(e3Gs+;  
改进后的快速排序: D>b5Uwt  
]_: TrH  
package org.rut.util.algorithm.support; |EV\a[  
apD=>O  
import org.rut.util.algorithm.SortUtil; 5YI/Ec  
vd7N&c9  
/** ViwpyC'v  
* @author treeroot ;i9<y8Dha  
* @since 2006-2-2 .n& Cq+U;  
* @version 1.0 + i@yZfT  
*/ v;]I^Kq  
public class ImprovedQuickSort implements SortUtil.Sort { t)gi.Ed1"L  
$W {yK+N  
private static int MAX_STACK_SIZE=4096; lAn+gDP  
private static int THRESHOLD=10; Z\=04[  
/* (non-Javadoc) =PFR{=F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SAG` ^t  
*/ ,)rZAI  
public void sort(int[] data) { >[H&k8\7n  
int[] stack=new int[MAX_STACK_SIZE]; u@Cf*VPK  
B(\r+"PB  
int top=-1; P A6KX5  
int pivot; BnaU)E h  
int pivotIndex,l,r; Vv yrty  
1KYbL8c  
stack[++top]=0; ?l, X!o6  
stack[++top]=data.length-1; )0U3w#,JQ  
w~$c= JO#  
while(top>0){ ..q63dr  
int j=stack[top--]; ?wLdW1&PpX  
int i=stack[top--]; k)5_1y  
E +Ujpd  
pivotIndex=(i+j)/2; O[(?.9  
pivot=data[pivotIndex]; 6i]Nr@1C  
OJ35En  
SortUtil.swap(data,pivotIndex,j); 1J-Qh<Q   
%|*nmIPq(  
file://partition aI={,\  
l=i-1; v;fJM5PA  
r=j; lHcZi  
do{ -OrY{^F  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z(Eke  
SortUtil.swap(data,l,r); B0)`wsb_  
} :T7?  
while(l SortUtil.swap(data,l,r); !f\?c7  
SortUtil.swap(data,l,j); 'T)Or,d  
oNuPP5d[]  
if((l-i)>THRESHOLD){ DHm[8 Qp  
stack[++top]=i; X(GmiH /E  
stack[++top]=l-1; G{NSAaD[  
} I(OAEIz  
if((j-l)>THRESHOLD){ t{R5 EU  
stack[++top]=l+1; 9Qzjqq:"Li  
stack[++top]=j; 6_R\l@a  
} YVB% kKv{  
<I7(eh6d  
} 1z~k1usRK  
file://new InsertSort().sort(data); B*?ZE4`  
insertSort(data); ~@T+mHny  
} 5Noe/6  
/** [ 8F \;  
* @param data -6rf( ER  
*/ j|VXC(6 P,  
private void insertSort(int[] data) { `OKo=e~,  
int temp; g!1I21M1~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'FShNY5  
} RVc)") hQj  
} 44|deE3Z  
} {UB%(E[Mr  
2B HKS-J*  
} CE~r4  
}*iAE>;  
归并排序: 9;=q=O/  
h ZoC _\  
package org.rut.util.algorithm.support; fd4;mc1T  
xN6?yr  
import org.rut.util.algorithm.SortUtil; I+0c8T(:  
za,6 du6  
/** +.w[6  
* @author treeroot A?e,U,  
* @since 2006-2-2 F?7u~b|@{  
* @version 1.0 F(deu^s%{  
*/ YMi/uy  
public class MergeSort implements SortUtil.Sort{ T`uDlo  
_zdNLwE[  
/* (non-Javadoc) >f>V5L%1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xXOR IlD  
*/ +<&E3Or  
public void sort(int[] data) { aZ$/<|y~:_  
int[] temp=new int[data.length]; >GgE,h  
mergeSort(data,temp,0,data.length-1); &9RH}zv6  
} ^D>fis  
+a-D#^ 2;  
private void mergeSort(int[] data,int[] temp,int l,int r){ +6 ho)YL  
int mid=(l+r)/2; yKYl@&H/%  
if(l==r) return ; ThtMRB)9  
mergeSort(data,temp,l,mid); /w0sj`;"  
mergeSort(data,temp,mid+1,r); G(3;;F7"  
for(int i=l;i<=r;i++){ <P- $RX  
temp=data; kL|\wci  
} Y.7}  
int i1=l; ((qGh>*  
int i2=mid+1; ?b56AE  
for(int cur=l;cur<=r;cur++){ -OWZ6#v(  
if(i1==mid+1) QCWf.@n  
data[cur]=temp[i2++]; n,CD  
else if(i2>r) P7Xg{L&@.  
data[cur]=temp[i1++]; Y17hOKc`  
else if(temp[i1] data[cur]=temp[i1++]; opXDm\  
else Apmw6cc  
data[cur]=temp[i2++]; %yfE7UPS]  
} RpYcD  
} 19p8B&  
_B3zRO  
} 9p4y>3  
D*QYKW=)  
改进后的归并排序: )&:L'N  
`"c'z;  
package org.rut.util.algorithm.support; eQ;Q4  
A @2Bs 5F  
import org.rut.util.algorithm.SortUtil; >g]ON9CGH  
|4fF T `  
/** aBxiK[[`  
* @author treeroot b# u8\H  
* @since 2006-2-2 +Ofa#^5);K  
* @version 1.0 /OG zt  
*/  m*dNrG  
public class ImprovedMergeSort implements SortUtil.Sort { y^R4I_* z  
6e.[,-eU  
private static final int THRESHOLD = 10; hF>u)%J/S  
UV@0gdy[  
/* `eR 7H>I  
* (non-Javadoc) Xb,T{.3@  
* Ac`;st%l.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A[)C:q,  
*/ "%@v++4y  
public void sort(int[] data) { -ihiG_f  
int[] temp=new int[data.length]; v+6e;xl8  
mergeSort(data,temp,0,data.length-1); 4MLH+/e  
} <#*.}w~  
! %Ny0JkO  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^2C>L}  
int i, j, k; $FX,zC<=  
int mid = (l + r) / 2; R5(T([w'  
if (l == r) >{nH v)  
return; T$P-<s  
if ((mid - l) >= THRESHOLD) {v,)G)obWw  
mergeSort(data, temp, l, mid); Y3rt5\!  
else dYF=c   
insertSort(data, l, mid - l + 1); 3i=Iu0  
if ((r - mid) > THRESHOLD) r,;\/^u*  
mergeSort(data, temp, mid + 1, r); N'?u1P4G  
else {dzoEM[ 1s  
insertSort(data, mid + 1, r - mid); pj8azFZ  
f<=Fe:1.  
for (i = l; i <= mid; i++) { yWb4Ify  
temp = data; Bp_wnd  
} k\aK?(.RC7  
for (j = 1; j <= r - mid; j++) { ;;#`#v  
temp[r - j + 1] = data[j + mid];  v~=\H  
} LW:1/w&pv  
int a = temp[l]; ^+/kr/  
int b = temp[r]; Gquuy7[&  
for (i = l, j = r, k = l; k <= r; k++) { T?wzwGp-[  
if (a < b) { lm0N5(XP  
data[k] = temp[i++]; q.V-LXM  
a = temp; w/m:{cHk  
} else { \?lz&<  
data[k] = temp[j--]; 8Vn4.R[vE  
b = temp[j]; +!yX T C  
} <<zI\+V  
} |J>WC}g@n  
} #b)e4vwCq  
l "pN90B4  
/** i.y)mcB4  
* @param data vHKlLl>*2  
* @param l o\=n4;S  
* @param i #wR;|pN  
*/ D4u% 6R|F  
private void insertSort(int[] data, int start, int len) { Q[u6|jRt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); TqAPAHg  
} uGVy6,  
} \RG!@$i  
} *?% k#S  
} n/Dp"4H%q  
!0}\&<8/m  
堆排序: s8mr''  
>U!*y4  
package org.rut.util.algorithm.support; A\sI<WrH  
+OHGn;C  
import org.rut.util.algorithm.SortUtil; K[?Xm"4  
\2e0|)aF6  
/** 9pSUIl9|j  
* @author treeroot F -gE<<  
* @since 2006-2-2 H=^K@Ti:  
* @version 1.0 !CY&{LEYn0  
*/ E-2 eOT  
public class HeapSort implements SortUtil.Sort{ 7jG(<!,  
,H kj1x  
/* (non-Javadoc) sM2MLh'D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \2v"YVWw  
*/ 2I'~2o  
public void sort(int[] data) { 9$*s8}|  
MaxHeap h=new MaxHeap(); S ZU \i*  
h.init(data); V9%aBkf8w  
for(int i=0;i h.remove(); t*S." q  
System.arraycopy(h.queue,1,data,0,data.length); 8At<Wic  
} E8[T   
Lxl_"k G  
private static class MaxHeap{ }j {!-&  
-G|a*^  
void init(int[] data){ Dt}rR[yJ  
this.queue=new int[data.length+1]; 3`.P'Fh(k  
for(int i=0;i queue[++size]=data; `)$_YZq|SR  
fixUp(size); 2[yBD-":  
} X@A1#z+s0]  
} -7qIToO.  
qt e>r  
private int size=0; B 9dt=j3j2  
DvXHK  
private int[] queue; 15\Ph[6g  
7A$B{  
public int get() { ^eq</5q D  
return queue[1]; bCv{1]RC2  
} 9"{W,'r&d  
W&Y"K)`  
public void remove() { u,. 3  
SortUtil.swap(queue,1,size--); [#^#+ |{\  
fixDown(1); 3(E $I5  
} Rqip kx  
file://fixdown +a@GHx 4-  
private void fixDown(int k) { QP@<)`1t9  
int j; %:v`EjRD0  
while ((j = k << 1) <= size) { YNdrWBf)  
if (j < size %26amp;%26amp; queue[j] j++; $D1w5o-  
if (queue[k]>queue[j]) file://不用交换 C@\{ehG  
break; 3 fj  
SortUtil.swap(queue,j,k); ~EiH-z4U  
k = j; Nh?| RE0t  
} <!d"E@%v@  
} 6]cryf&b  
private void fixUp(int k) { ;i uQ?MR3  
while (k > 1) { ` TqSQg_l  
int j = k >> 1; Yf_6PGNzX  
if (queue[j]>queue[k]) z`Wt%tL(  
break; ;Y9=!.Ak0y  
SortUtil.swap(queue,j,k); DPgm%Xq9(!  
k = j; d[gl]tj9  
} B:TR2G9UT  
} !v|ISyK  
X?r48l??  
} RF}X ER  
4Aes#{R3v  
} q}|U4MJm  
% ~ ]xuP[  
SortUtil: +ZsX*/TOn  
q(o/yx{bm  
package org.rut.util.algorithm; 9;t]Hp_+K  
^WYQ]@rh3  
import org.rut.util.algorithm.support.BubbleSort; \p&~ ,%  
import org.rut.util.algorithm.support.HeapSort; : 9!%ZD  
import org.rut.util.algorithm.support.ImprovedMergeSort; [onqNp  
import org.rut.util.algorithm.support.ImprovedQuickSort; | $^;wP  
import org.rut.util.algorithm.support.InsertSort; GV|9H]_,I  
import org.rut.util.algorithm.support.MergeSort; b8KsR=]4I  
import org.rut.util.algorithm.support.QuickSort; *O$CaAr\s  
import org.rut.util.algorithm.support.SelectionSort; &[R8Q|1 j  
import org.rut.util.algorithm.support.ShellSort; VL+C&k v]  
mdih-u(T|  
/** 4R%*Z ~  
* @author treeroot t@oK~ Nr  
* @since 2006-2-2 H!IshZfktn  
* @version 1.0 u0)7i.!M  
*/ PaB!,<A  
public class SortUtil { zJlQ_U-!  
public final static int INSERT = 1; kYwb -;  
public final static int BUBBLE = 2; '(+<UpG_Q}  
public final static int SELECTION = 3; -<_$m6x"A  
public final static int SHELL = 4; yBe d kj  
public final static int QUICK = 5; u`:hMFTID  
public final static int IMPROVED_QUICK = 6; 3:/'n  
public final static int MERGE = 7; ;$j7H&UNQj  
public final static int IMPROVED_MERGE = 8; J'&# mDU  
public final static int HEAP = 9; gYop--\14]  
4\5uY  
public static void sort(int[] data) { `\Ku]6J]5  
sort(data, IMPROVED_QUICK); VObrlOkp  
} 2GmpCy`L"  
private static String[] name={ #_  C  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )u ?' ;  
}; 7Du1RuxP  
:VmHfOO  
private static Sort[] impl=new Sort[]{ OK|qv[  
new InsertSort(), l7[7_iB&E  
new BubbleSort(), U!w1AY|  
new SelectionSort(), 1Y xgR}7  
new ShellSort(), [e e%c Xo  
new QuickSort(), ra '  
new ImprovedQuickSort(), O{z}8&oR:  
new MergeSort(), Br>Fpe$q4  
new ImprovedMergeSort(), 'Yy&G\S  
new HeapSort() `'_m\uo  
}; BfTcI)  
ewsKH\#  
public static String toString(int algorithm){ !hxIlVd{  
return name[algorithm-1]; O  OFVnu  
} Z^KA  
6X g]/FD  
public static void sort(int[] data, int algorithm) { 3#kitmV  
impl[algorithm-1].sort(data); 72 TI  
} }}{!u0N},V  
7XrfuG*L$  
public static interface Sort { Wk;5/  
public void sort(int[] data); =8 G&3 R  
} or ;f&![w  
qUF'{K   
public static void swap(int[] data, int i, int j) { q!'rz  
int temp = data; a5'#j35  
data = data[j]; +~Cy$M CX  
data[j] = temp; ^W83ByP  
} Mc sTe|X  
} &(rWwOo6  
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