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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。 $y,tR.5.)[  
插入排序: rY295Q  
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package org.rut.util.algorithm.support; a LJ d1Q  
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import org.rut.util.algorithm.SortUtil; <jG[ z69)  
/** ["sm7yQ  
* @author treeroot \ {;3'<  
* @since 2006-2-2 Q-Oj%w4e  
* @version 1.0 [wn! <#~v  
*/ hkx(r5o  
public class InsertSort implements SortUtil.Sort{ ._TN;tR~'  
Q:8t1ZDo  
/* (non-Javadoc) W{fNZb'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5=/j  
*/ i9D<jkc  
public void sort(int[] data) { 6mV^a kapv  
int temp; U&0 RQ:B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fPq)Lx1'  
} T l8`3`e  
} ei(S&u<  
} iJS7g  
LvNulMEK  
} GezMqt;2  
R)6"P?h._4  
冒泡排序: .+&M,% x  
yaPx=^&  
package org.rut.util.algorithm.support; vrIWw?/z?  
j[Gg[7q{y  
import org.rut.util.algorithm.SortUtil; |z?c>.  
fT{%zJU  
/** z/wwe\ a5  
* @author treeroot 3L9@ELY4  
* @since 2006-2-2 }!N/?A5  
* @version 1.0 p{AX"|QM"  
*/ e'r-o~1eN  
public class BubbleSort implements SortUtil.Sort{ FT\%=>{  
#]r'?GN  
/* (non-Javadoc) U\-=|gQ'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D+y?KihE  
*/ J@+b_e*  
public void sort(int[] data) { +mC?.B2D  
int temp; vF)eo"_s*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ avW33owb@  
if(data[j] SortUtil.swap(data,j,j-1); ,,]<f*N  
} wK0],,RN,h  
} ~>XqR/v  
} |q c<C&O  
} d&naJ)IoF)  
.0p'G}1  
} gv,1 CK  
u>/Jb+  
选择排序: +0) H~ qB\  
yz=aJ v; H  
package org.rut.util.algorithm.support; /Ow@CB  
myF/_o&Ty  
import org.rut.util.algorithm.SortUtil; } ^2'@y!(  
onl,R{,`0  
/** (U@$gkUx}G  
* @author treeroot 5,?^SK|'x  
* @since 2006-2-2 B`:l;<&jX  
* @version 1.0 f o idneus  
*/ Fz' s\  
public class SelectionSort implements SortUtil.Sort { 1p8hn!V  
T\"-q4+=C  
/* (wf3HEb_  
* (non-Javadoc) &]pY~zVc  
* *W2o$_Hs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c$x >6&&L  
*/ %DM0Z8P$B-  
public void sort(int[] data) { 8`_tnARIX  
int temp; QW_BT ^d"  
for (int i = 0; i < data.length; i++) { 49YN@ PXC  
int lowIndex = i; mJYD"WgY  
for (int j = data.length - 1; j > i; j--) { #I\" 'n5M  
if (data[j] < data[lowIndex]) { V3ExS1fNf  
lowIndex = j; <==6fc>s  
} gBOF#"-  
} nH B  
SortUtil.swap(data,i,lowIndex); ?}#Iu-IA  
} g}pD%  
} ?in)kL  
h4Xz"i{z  
} Z1.v%"/(  
} L _Zmi$  
Shell排序: \\;y W~  
jZ''0Lclpc  
package org.rut.util.algorithm.support; /0Mt-8[  
hii#kB2  
import org.rut.util.algorithm.SortUtil; C7K]c4T  
""*g\  
/** -q\Rbb5M  
* @author treeroot g.\%jDM  
* @since 2006-2-2 ij1YV2v  
* @version 1.0 N_/+B]r }T  
*/ {nw.bKq 7  
public class ShellSort implements SortUtil.Sort{ $W%-Mm  
W}#n.c4+  
/* (non-Javadoc) wF3 MzN=%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '4CD }  
*/ KDb`g}1Q  
public void sort(int[] data) { f Xh{ _>  
for(int i=data.length/2;i>2;i/=2){ s6'=4gM  
for(int j=0;j insertSort(data,j,i); + )[@  
} GWv i  
} LqNyi   
insertSort(data,0,1); [LO=k|&R  
} L|B! ]}  
Mmg~Fn  
/** 3gnO)"$  
* @param data F)v  
* @param j .R l7,1\  
* @param i Pm,.[5uc  
*/ x2'pl (^  
private void insertSort(int[] data, int start, int inc) { 4-I7"pW5  
int temp; pC #LQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7O:g;UI#  
} N,l"9>CF  
} SlwQ_F"4L  
} JW )f'r_f  
/nn~&OU  
} pRd'\+  
Cy)N hgz  
快速排序: i<):%[Q)>  
"YW Z&_n**  
package org.rut.util.algorithm.support; AyPtbrO  
H \'1.8g/  
import org.rut.util.algorithm.SortUtil; ZCV i ZWo  
64]8ykRD-  
/** DEbMb6)U  
* @author treeroot `WnsM; 1Y"  
* @since 2006-2-2 dFA1nn6{  
* @version 1.0 sN2m?`?"G  
*/ [ D.%v~j  
public class QuickSort implements SortUtil.Sort{ C!ch !E#  
}r@yBUW  
/* (non-Javadoc) r-yUWIr S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k61mRO  
*/ `( w"{8laB  
public void sort(int[] data) { lfre-pS+  
quickSort(data,0,data.length-1); p|8ZHR+  
} {f@Q&(g  
private void quickSort(int[] data,int i,int j){ \KzJNCOT  
int pivotIndex=(i+j)/2; /'5d0' ,M  
file://swap kD?@nx>  
SortUtil.swap(data,pivotIndex,j); P|Gwt&  
&GkD5b  
int k=partition(data,i-1,j,data[j]); .g1x$cQ1<  
SortUtil.swap(data,k,j); L AH">E  
if((k-i)>1) quickSort(data,i,k-1); SOn)'!g  
if((j-k)>1) quickSort(data,k+1,j); Ie|5,qw E  
XH@(V4J(.  
} L#uU. U=  
/** kkWv#,qwU  
* @param data x^1d9Z  
* @param i &1R#!|h1W  
* @param j &pjj  
* @return H7z)OaM  
*/ @d^Z^H*Y v  
private int partition(int[] data, int l, int r,int pivot) { J7^ UQ  
do{ $;'M8L  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z)2d4:uv  
SortUtil.swap(data,l,r); ~LZrhwVj$  
} %y|pVN!U  
while(l SortUtil.swap(data,l,r); =B5{7g\  
return l; N5,LHO  
} 74MxU  
Mgi~j.[  
} p)ig~kk`  
3T0~k--  
改进后的快速排序: ~J&-~<%P}  
;{L[1OP%e  
package org.rut.util.algorithm.support; `:*2TLxIk  
4(LLRzzW  
import org.rut.util.algorithm.SortUtil; h`dQ OH#  
 BgQ/$,  
/** J?yasjjgP  
* @author treeroot M<d!j I9)  
* @since 2006-2-2 RL/y7M1j  
* @version 1.0 [P =P8-5  
*/ )#cZ& O  
public class ImprovedQuickSort implements SortUtil.Sort { nq8XVT.m^\  
_ +NjfF|  
private static int MAX_STACK_SIZE=4096; 2#sFY/@  
private static int THRESHOLD=10; [DH4iG5  
/* (non-Javadoc) $ P 5K   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , ?U)mYhI  
*/ NsP=l]  
public void sort(int[] data) { <kPNe>-f  
int[] stack=new int[MAX_STACK_SIZE]; ZTV)D  
t!*[nfR  
int top=-1; FHw%ynC  
int pivot; z<%bNnSO  
int pivotIndex,l,r; _,)_(R ,h  
E+qLj|IU  
stack[++top]=0; lZL+j6Q  
stack[++top]=data.length-1; 1W{oj  
" nCK%w=  
while(top>0){ 5WJ ~%"O  
int j=stack[top--]; ndzADVP  
int i=stack[top--]; a1y<Y`SC9  
'ia-h7QWS  
pivotIndex=(i+j)/2; 3qf#NJN}  
pivot=data[pivotIndex]; I9qFXvqL  
-^2p@^  
SortUtil.swap(data,pivotIndex,j); 3*~`z9-z  
SsTBjIX  
file://partition 6qFzo1LO  
l=i-1; uX3yq<lK"  
r=j; ?'+]d;UO&  
do{ cZ|*Zpk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RQ =$, i`  
SortUtil.swap(data,l,r); zKGZg>q  
} )'T].kWW  
while(l SortUtil.swap(data,l,r); P dqvXc  
SortUtil.swap(data,l,j); ?Y3i-jY  
Zf3(! a[  
if((l-i)>THRESHOLD){ VsL,t\67  
stack[++top]=i; G\dPGPPM  
stack[++top]=l-1; i/+^C($'f  
} Os'E7;:1h  
if((j-l)>THRESHOLD){ H=C~h\me?  
stack[++top]=l+1; x-k-Pd  
stack[++top]=j; h~\k;ca  
} hdx_Tduue  
[mu8V+8@d4  
} #$xtUCqX  
file://new InsertSort().sort(data); slPr^)  
insertSort(data); ~6n|GxR.[  
} PiM(QR  
/** i@nRZ$K  
* @param data iKE&yO3  
*/ zPp22  
private void insertSort(int[] data) { N^$q;%  
int temp; #%k_V+o3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W ,6q1  
} iv_3R}IbX  
} "h_f- vP  
} f&4+-w.:V|  
y EfAa6  
} @y7KP$t  
e:nByzdH0[  
归并排序: 'Xwv,  
S/)),~`4  
package org.rut.util.algorithm.support; 9;v3 (U+:  
5X)QW5A  
import org.rut.util.algorithm.SortUtil; l+F29_o#  
yZ,pH1  
/** >y#MEN>?  
* @author treeroot V'=;M[&  
* @since 2006-2-2 x)dLY.'|  
* @version 1.0 J{dO0!7y  
*/ Yc]k<tQ  
public class MergeSort implements SortUtil.Sort{ 4)tY6ds)r|  
Jw}t~m3  
/* (non-Javadoc) Yq00<kIDJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S1^/W-yoc~  
*/ r+ 8Tp|%  
public void sort(int[] data) { Db|JR  
int[] temp=new int[data.length]; WUie `p  
mergeSort(data,temp,0,data.length-1); [k\VUg:P  
} sx=1pnP9`  
2[`n<R\  
private void mergeSort(int[] data,int[] temp,int l,int r){ KBtqtE'(L  
int mid=(l+r)/2; bT2c&VPCE  
if(l==r) return ; 2WH(c$6PWf  
mergeSort(data,temp,l,mid); f\= @jV  
mergeSort(data,temp,mid+1,r); }EwE#sZ#  
for(int i=l;i<=r;i++){ l hYJectJa  
temp=data; 1$03:ve1  
} KyX2CfW}t  
int i1=l; C('D]u$Hdk  
int i2=mid+1; &%j`WF4p  
for(int cur=l;cur<=r;cur++){ _0rt.NRD  
if(i1==mid+1) Ur< (TM  
data[cur]=temp[i2++]; S y <E@1  
else if(i2>r) 4z5qXI/<m4  
data[cur]=temp[i1++]; rhPv{6Z|7  
else if(temp[i1] data[cur]=temp[i1++]; & n@hD7=(  
else .jqil0#)Y"  
data[cur]=temp[i2++]; jc_k\  
} /r'Fq =z  
} >$rH,Er  
c!6v-2ykv  
} ]l fufjj  
H if| z[0$  
改进后的归并排序: (Ud"+a  
9?ll(5E  
package org.rut.util.algorithm.support; w,j!%N  
N7"cMAs\G  
import org.rut.util.algorithm.SortUtil; 2Xv}JPS2As  
>x6\A7  
/** GOdWc9Ta!  
* @author treeroot <`SA >P  
* @since 2006-2-2 83V\O_7j  
* @version 1.0 #pAN   
*/ 81|[Y'f  
public class ImprovedMergeSort implements SortUtil.Sort { kK}?NKqT  
B^TgEr  
private static final int THRESHOLD = 10; I/St=-;  
x'}z NEXI  
/* &?QKWxN  
* (non-Javadoc) :^?-bppYW  
* tE-bHu370  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]#shuZ##>0  
*/ ,ov$` v  
public void sort(int[] data) { OjffN'a+N  
int[] temp=new int[data.length]; -:_3N2U=+  
mergeSort(data,temp,0,data.length-1); /PaS <"<P@  
} a U.3  
q/*veL  
private void mergeSort(int[] data, int[] temp, int l, int r) { g/$RuT2U  
int i, j, k; G L0P&$h  
int mid = (l + r) / 2; aj1g9 y  
if (l == r) <e 9d5-2  
return; )!AH0p  
if ((mid - l) >= THRESHOLD) 6W YVHG  
mergeSort(data, temp, l, mid); fGe ie m  
else w]xr ~D+  
insertSort(data, l, mid - l + 1); #lMIs4i.  
if ((r - mid) > THRESHOLD) 8v/,< eARJ  
mergeSort(data, temp, mid + 1, r); MX#LtCG#V  
else ZZkc) @  
insertSort(data, mid + 1, r - mid); DS4y@,/)'  
a6h+?Q7uF  
for (i = l; i <= mid; i++) { X*7VDt=  
temp = data; p<D@l2vt  
} e:MbMj6`  
for (j = 1; j <= r - mid; j++) { _Ad63.Uq))  
temp[r - j + 1] = data[j + mid]; N6BOUU]  
} M7Xn=jc  
int a = temp[l]; (0y!{ (a  
int b = temp[r]; UT{`'#iT  
for (i = l, j = r, k = l; k <= r; k++) { \goiW;b  
if (a < b) { g*_n|7pB  
data[k] = temp[i++]; j)ln"u0R^B  
a = temp; )j}#6r  
} else { )J yB  
data[k] = temp[j--]; LrdED[Z  
b = temp[j]; @6!Myez'  
} ryz NM3  
} iSOyp\E|  
} Xep2 )3k>  
_'y`hKeI[  
/** ^"iL|3d  
* @param data D^s#pOZS  
* @param l OM7AK B=S  
* @param i fV6ddh  
*/ 'F/uD 1;  
private void insertSort(int[] data, int start, int len) { c% wztP;L  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); hhU\$'0B-  
} 5}5oj37x  
} 64"DT3:  
} 23ho uS   
} ei}(jlQp  
q JtLJ<=1  
堆排序: ZcHIk{|  
B=r+ m;(  
package org.rut.util.algorithm.support; F_/ra?WVH  
@0tX ,Z9  
import org.rut.util.algorithm.SortUtil; i3L2N~:V  
+4qR5(W  
/** >lJTS t5{  
* @author treeroot eqOT@~H  
* @since 2006-2-2 TB<$9FCHK  
* @version 1.0 n8\88d  
*/ K2v[_a~@  
public class HeapSort implements SortUtil.Sort{ ?-0, x|ul  
y>T>  
/* (non-Javadoc) f"AT@Ga]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uhn3usK  
*/ z'O+B}  
public void sort(int[] data) { k1P'Q&Na  
MaxHeap h=new MaxHeap(); qMA";Frt3N  
h.init(data); NCo!n$O1~  
for(int i=0;i h.remove(); fb[lL7  
System.arraycopy(h.queue,1,data,0,data.length); Zrgv*  
} +.rOqkxJ  
k3Puq1H  
private static class MaxHeap{ @li/Y6Wh  
R7h3O0@!  
void init(int[] data){ /74h+.amg  
this.queue=new int[data.length+1]; Q TN24 q4  
for(int i=0;i queue[++size]=data; #_IuB) qy  
fixUp(size); { +Wknm%  
} oxI?7dy5  
} 7G Erh,  
Q$k#q<+0  
private int size=0; B o%Sl  
SY@;u<Pd   
private int[] queue; jlqSw4_  
MIiBNNURX  
public int get() { 'X4)2iFV  
return queue[1]; U(OkTJxv+  
} tt6GtYrC 1  
+nB0O/m'U  
public void remove() { RHbbj}B  
SortUtil.swap(queue,1,size--); ;v.J D7  
fixDown(1); r%$\Na''  
}  #3RElI  
file://fixdown (WY9EJ<s,  
private void fixDown(int k) { v:w^$]4  
int j; NMC0y|G  
while ((j = k << 1) <= size) { qM2m!  
if (j < size %26amp;%26amp; queue[j] j++; 5'`DrTOA  
if (queue[k]>queue[j]) file://不用交换 Nm-E4N#'i  
break; 0;OZ|;Z  
SortUtil.swap(queue,j,k); ~Dw% d;  
k = j; {F\P3-ub  
} tehWGqx)  
} XJwgh y?(  
private void fixUp(int k) { 4L97UhLL  
while (k > 1) { @`^Z5n.4  
int j = k >> 1; -QBM^L  
if (queue[j]>queue[k]) F|oyrG  
break; [ `_sH\  
SortUtil.swap(queue,j,k); w?M"`O(  
k = j; *Utx0Me  
} 2FO<Z %Y  
}  (wxi!  
`fG<iBD  
} mjk<FXW  
![]6| G&  
} #e@[{s7  
g 4 $  
SortUtil: VyNU<}  
I1K%n'D  
package org.rut.util.algorithm; g]BA/Dw  
nT}i&t!q8@  
import org.rut.util.algorithm.support.BubbleSort; Q{miI N  
import org.rut.util.algorithm.support.HeapSort; PTXS8e4  
import org.rut.util.algorithm.support.ImprovedMergeSort; /_8nZVu  
import org.rut.util.algorithm.support.ImprovedQuickSort; Z}SqiT  
import org.rut.util.algorithm.support.InsertSort; o,0 Z^"|  
import org.rut.util.algorithm.support.MergeSort; _oefp*iWS  
import org.rut.util.algorithm.support.QuickSort; 7,uD7R_  
import org.rut.util.algorithm.support.SelectionSort; [;:ocy  
import org.rut.util.algorithm.support.ShellSort; YzEOfHL,  
1C*mR%Q  
/** YZ<5-C  
* @author treeroot k!WeE#"(  
* @since 2006-2-2 V;Ln|._/t  
* @version 1.0 [`bK {Dq2  
*/ E2`9H-6e  
public class SortUtil { {aK3'-7  
public final static int INSERT = 1; )}_}D +2  
public final static int BUBBLE = 2; l>(*bb1}b  
public final static int SELECTION = 3; zQ u9LN  
public final static int SHELL = 4; #%#N.tB 5  
public final static int QUICK = 5; I\[z(CHg@  
public final static int IMPROVED_QUICK = 6; ?UeV5<TewS  
public final static int MERGE = 7; N{M25ucAHl  
public final static int IMPROVED_MERGE = 8; dAOJ: @y  
public final static int HEAP = 9; Kf,AnKkn'  
Lso%1M  
public static void sort(int[] data) { mW,b#'hy  
sort(data, IMPROVED_QUICK); Aq>?G+  
} /h]ru SI  
private static String[] name={ iorQ/(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6 lEv<)cC  
}; vuJEPn%  
6J$I8b#/  
private static Sort[] impl=new Sort[]{ ]Qp-$)N  
new InsertSort(), P /q] u  
new BubbleSort(), g$/7km{TP  
new SelectionSort(), pRjrMS  
new ShellSort(), wqzpFPk(  
new QuickSort(), hx:^xW@r4P  
new ImprovedQuickSort(), QWC C  
new MergeSort(), A.$P1zwC  
new ImprovedMergeSort(), Cj YI *  
new HeapSort() ? 5OK4cR  
}; yGX5\PSo  
Qz$nWsD  
public static String toString(int algorithm){ S5UQ   
return name[algorithm-1]; GE !p  
} W}%[i+  
6%wlz%Fp  
public static void sort(int[] data, int algorithm) { "t-9q  
impl[algorithm-1].sort(data); t"MrrK>T  
} P1Iy >%3  
'Ddzlip  
public static interface Sort { hyhm{RC?[  
public void sort(int[] data); ~Ra8(KocD  
} %8YUK/(|n  
'0I>  
public static void swap(int[] data, int i, int j) { um( xZ6&m  
int temp = data; <;1M!.)5  
data = data[j]; 6/" #pe^  
data[j] = temp; `/B+  
} z+zEH9.'  
} J*Cf1 D5!  
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