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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:Xui-  
插入排序: Q[k7taoy  
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package org.rut.util.algorithm.support; ,&IBj6%Y  
cTeEND)  
import org.rut.util.algorithm.SortUtil; It@ak6u?  
/** O2Mo ~}  
* @author treeroot b%<i&YY#  
* @since 2006-2-2 7=ZB?@bU~  
* @version 1.0 NwdA@"YQ|  
*/ @u2nG:FG  
public class InsertSort implements SortUtil.Sort{ oA&V,r  
:d<;h:^_  
/* (non-Javadoc) 217KJ~)'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $h-5PwHp  
*/ bG0t7~!{E  
public void sort(int[] data) { #`mo5  
int temp; dviL5Eaj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |mfQmFF  
} "3v[\M3  
} WoiK _Ud  
} y3K9rf  
MD ,}-m  
} )[>b7K$f  
8 ]N+V:  
冒泡排序: B{SzC=4f}  
G8lR_gD"!  
package org.rut.util.algorithm.support; !RnO{FL  
\gL H_$}  
import org.rut.util.algorithm.SortUtil; !ldb_*)h  
451r!U1Z  
/** 1;[\xqJ  
* @author treeroot o~F @1  
* @since 2006-2-2 DH_Mll>  
* @version 1.0 Vet7a_  
*/ u5 EHzoq  
public class BubbleSort implements SortUtil.Sort{ 2Ek6YNx  
0*"auGuX  
/* (non-Javadoc) \z<B=RT\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0f 1Lu) 2  
*/ g@.RfX=  
public void sort(int[] data) { #"a?3!wr  
int temp; D!~-53f@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ x(z[S$6Y\  
if(data[j] SortUtil.swap(data,j,j-1); ~3.1. 'A  
} @U%I 6 t  
} ~n84x  
} Ak$gh b  
} V$+xJ  m  
k|,pj^  
} @#}9?>UV  
vS:%(Y"!<  
选择排序: Nf>1`eP  
02} &h  
package org.rut.util.algorithm.support; +n]U3b  
]S[zD|U%  
import org.rut.util.algorithm.SortUtil; ;5A&[]@^^@  
a2*WZc`  
/** {hX. R  
* @author treeroot &2{h]V6  
* @since 2006-2-2 -L6 rXQV@j  
* @version 1.0 sD.bBz  
*/ &eT)c<yhyK  
public class SelectionSort implements SortUtil.Sort { 'N],d&fu^^  
Uq&ne 1  
/* bh?Vufd%)  
* (non-Javadoc) uYS?# g  
* =8j;!7 p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pc5-'; n  
*/ TdP_L/>|J  
public void sort(int[] data) { Rs:<'A  
int temp; G.O0*E2V  
for (int i = 0; i < data.length; i++) { #H(|+WEu  
int lowIndex = i; )]!Ps` ,u  
for (int j = data.length - 1; j > i; j--) { rB}UFS)  
if (data[j] < data[lowIndex]) { Gu<3*@Ng  
lowIndex = j; I~MBR2$9  
} [zK|OMxoV  
} hZ.Sj~> 7`  
SortUtil.swap(data,i,lowIndex); _Q/D%7[pa  
} j_\sdH*r  
} kqSCKY1  
{SW104nb&#  
} |,5b[Y"Dt  
0X-u'=Bs  
Shell排序: XZA3T Z  
fSl+;|K n  
package org.rut.util.algorithm.support; }#q9>gx  
*8U+2zgfC  
import org.rut.util.algorithm.SortUtil; O1coay  
 "=H7p3  
/** bmc1S  
* @author treeroot 7(eWBJfTo  
* @since 2006-2-2 X(1nAeQ  
* @version 1.0 s'ntf  
*/ 9'Y~! vY  
public class ShellSort implements SortUtil.Sort{ FqQm *k_  
/Yc!m$uCW  
/* (non-Javadoc) '@wYr|s4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J& +s  
*/ kYz)h  
public void sort(int[] data) { )dG7 $,g  
for(int i=data.length/2;i>2;i/=2){ X^?<, Y)1.  
for(int j=0;j insertSort(data,j,i); R* E/E  
} H]Q Z4(  
} \rcbt6H  
insertSort(data,0,1); 6J6MR<5'  
} {LY$  
>ALU}o/  
/** zrE ~%YR  
* @param data lKI1bs]i  
* @param j 6CLrP} u  
* @param i Q0!gTV  
*/ J:'cj5@  
private void insertSort(int[] data, int start, int inc) { 75@){ :  
int temp; !~m)_Q5?~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BkJV{>?_+  
} HLAWx/c,j"  
} ,$mnD@)  
} \S}&QV  
&m`1lxT  
} -Uq I=#  
+e%9P%[+  
快速排序: @W=#gRqQPy  
xqO'FQO%  
package org.rut.util.algorithm.support; ]o_Z3xXUa  
;) 5d wq  
import org.rut.util.algorithm.SortUtil; X7{ueP#L  
Q4TI '/  
/** 23qTmh  
* @author treeroot HW"|Hm$Y(  
* @since 2006-2-2 : +/V  
* @version 1.0 cG,B;kMjo  
*/ fg%I?ou  
public class QuickSort implements SortUtil.Sort{ "Q A#  
kW4/0PD  
/* (non-Javadoc) X(?.*m@+TB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d[w'j/{  
*/ '[~NRKQJ  
public void sort(int[] data) { utQE$0F  
quickSort(data,0,data.length-1); "dXRUg"  
} 4!d&Zc>C4  
private void quickSort(int[] data,int i,int j){ Q{UR3U'Q  
int pivotIndex=(i+j)/2; `&4L'1eF{  
file://swap K!5QFO4  
SortUtil.swap(data,pivotIndex,j); +e`f|OQ  
4VSlgoz  
int k=partition(data,i-1,j,data[j]); i RS )Z )  
SortUtil.swap(data,k,j); ?zQ\u{]=  
if((k-i)>1) quickSort(data,i,k-1); n wToZxHZ~  
if((j-k)>1) quickSort(data,k+1,j); >,y291p2  
9loWh5_1Z  
}  3p"VmO  
/** A$WE:<^  
* @param data {^Vkxf]  
* @param i BP,"vq$'+  
* @param j 2Auhv!xV  
* @return gtyo~f  
*/ MmI4J$F  
private int partition(int[] data, int l, int r,int pivot) { rBkLwJ]  
do{ \s<{V7tq  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2w'Q9&1~  
SortUtil.swap(data,l,r); 0_}OKn)J  
} M3odyO(  
while(l SortUtil.swap(data,l,r); BZ">N  
return l; @R_a'v-  
} 4v33{sp  
wxkCmrV  
}  nk>  
3DV';  
改进后的快速排序: .|JJyjRA+  
a57Y9.H`o  
package org.rut.util.algorithm.support; xM8}Xo  
fB:9:NX  
import org.rut.util.algorithm.SortUtil; hq6fDRO/4  
1Zx|SBF  
/** HlqCL1\<  
* @author treeroot \-0@9E<D  
* @since 2006-2-2 `L`qR,R  
* @version 1.0 Ah;2\0|t  
*/ ;3U-ghj  
public class ImprovedQuickSort implements SortUtil.Sort { & 1p\.Y  
UZi^ &  
private static int MAX_STACK_SIZE=4096; gYA|JFi  
private static int THRESHOLD=10; &8_]omuNV  
/* (non-Javadoc) ]iRE^o6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *&q\)\(3w  
*/ c$rkbbf~V  
public void sort(int[] data) { 0Jm6 r4s?  
int[] stack=new int[MAX_STACK_SIZE]; KiT>W~  
,a eQXI#@  
int top=-1; 8;ke,x  
int pivot; 2qo=ud  
int pivotIndex,l,r; ~YA* RCe  
\{t#V ~  
stack[++top]=0; a*$to/^r  
stack[++top]=data.length-1; mv O!Y  
k<Z^93 S  
while(top>0){ @*]l.F   
int j=stack[top--]; ^ llZf$`  
int i=stack[top--]; {E-.W"t4  
"XT7;!  
pivotIndex=(i+j)/2; ]|it&4l  
pivot=data[pivotIndex]; uM h[Ht^.  
V%8?f,  
SortUtil.swap(data,pivotIndex,j); NZdjS9  
R  5-q{  
file://partition <k<K"{  
l=i-1; KtchK pv  
r=j; =dx!R ,Bw  
do{ E0!}~Z)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vH%AXz IA  
SortUtil.swap(data,l,r); <vJPKQ`=:  
} K*&M:u6E  
while(l SortUtil.swap(data,l,r); Py$Q]s?\1  
SortUtil.swap(data,l,j); L6./b;  
XAwo ~E  
if((l-i)>THRESHOLD){ _ui03veA1  
stack[++top]=i; 5XySF #  
stack[++top]=l-1; `E+)e?z  
} f uQbDb&  
if((j-l)>THRESHOLD){ lT#&\JQ  
stack[++top]=l+1; k"\%x =#  
stack[++top]=j; T$T:~8tK3  
} Aayh'xQ  
gKeqf-UWKJ  
} NdGIH/Y;M  
file://new InsertSort().sort(data); p4C w#)BaS  
insertSort(data); ZQXv-"  
} [zl@7X1{_  
/** _8P"/( `Rw  
* @param data ) DXN|<A  
*/ 0]4kR8R3[  
private void insertSort(int[] data) { %tul(Z~<1  
int temp; [Oen{c9 A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %KHO}gad1  
} o(w!x!["  
} k4fc 5P  
} .) uUpY%K^  
B4yU}v  
} *GleeJWz  
74Xk^  8  
归并排序: Ko_Sx.  
x;)bp7  
package org.rut.util.algorithm.support; BZq_om6  
0T7(c-  
import org.rut.util.algorithm.SortUtil; ;iR( Ir  
tvXoF;Yq  
/** RO[Ko-m|/N  
* @author treeroot J ^gtSn^  
* @since 2006-2-2 HM57b>6  
* @version 1.0 O4RNt,?l  
*/ ~\kJir  
public class MergeSort implements SortUtil.Sort{ EBlfwFd  
W&CQ87b  
/* (non-Javadoc) <k?ofE1o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b~fX=!M  
*/ A<P3X/i  
public void sort(int[] data) { bwo-9B  
int[] temp=new int[data.length]; _a1 =?  
mergeSort(data,temp,0,data.length-1); $2B _a  
} ^ CVhV  
xxkU u6x#  
private void mergeSort(int[] data,int[] temp,int l,int r){ /WlK*8C  
int mid=(l+r)/2; Atsi}zTR\  
if(l==r) return ; jXA!9_L7  
mergeSort(data,temp,l,mid); 6hDK;J J&  
mergeSort(data,temp,mid+1,r); b ?9c\-}  
for(int i=l;i<=r;i++){ o#3?")>|  
temp=data; y_EkW f  
} Tlrr02>B{  
int i1=l; IN=pki |.  
int i2=mid+1; VH[r@Pn  
for(int cur=l;cur<=r;cur++){ |T?wM/  
if(i1==mid+1) sqTBlP  
data[cur]=temp[i2++]; ,K9\;{C  
else if(i2>r) 3D_Ky Z~M+  
data[cur]=temp[i1++]; KilgeN:  
else if(temp[i1] data[cur]=temp[i1++]; CvfX m  
else >2h|$6iWP  
data[cur]=temp[i2++]; X8~dFjhX  
} +v4P9V|s  
} j_N><_Jc  
=OfU#i"c  
} 7pMl:\  
3 i<,#FaL  
改进后的归并排序: r>73IpJI  
#p& &w1  
package org.rut.util.algorithm.support; h'VN& T,  
?_mcg8A@@*  
import org.rut.util.algorithm.SortUtil; 5v"r>q[ X  
uD4=1g6[s  
/** ! `5[(lm  
* @author treeroot pRI<L'  
* @since 2006-2-2 @P=St\;VP  
* @version 1.0 OS8 ^mC  
*/ +Qy*s1fit  
public class ImprovedMergeSort implements SortUtil.Sort { ~3byAL  
uC\FW6K=m  
private static final int THRESHOLD = 10; L%](C  
u8ofgcFYE  
/* ^0"^Xk*  
* (non-Javadoc) Ow7NOhw  
* RC 7|@a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Q2;bmIc  
*/ :g)0-gN   
public void sort(int[] data) { k. bzh.  
int[] temp=new int[data.length]; W>C!V  
mergeSort(data,temp,0,data.length-1); v*Tliw`-U  
} dWHl<BUm  
u I$| M  
private void mergeSort(int[] data, int[] temp, int l, int r) { OLXkiesK{  
int i, j, k; s_]p6M  
int mid = (l + r) / 2; $=dp)  
if (l == r)  2|'v[  
return; a*LT<N  
if ((mid - l) >= THRESHOLD) rZRcy9$y>  
mergeSort(data, temp, l, mid); eXJt9olI  
else 5dffF e  
insertSort(data, l, mid - l + 1); ]zp5 6U|xa  
if ((r - mid) > THRESHOLD) 3:Bwf)*  
mergeSort(data, temp, mid + 1, r);  V|=PaO  
else B$~oZ'4v  
insertSort(data, mid + 1, r - mid); whb|N2  
DLMG<4Cd~  
for (i = l; i <= mid; i++) { e$F]t *)Xa  
temp = data; z;1y7W!v  
} %bI(   
for (j = 1; j <= r - mid; j++) { |8I #`  
temp[r - j + 1] = data[j + mid]; 8r '  
} .DSn H6O  
int a = temp[l]; _^4\z*x  
int b = temp[r]; ;\`~M  
for (i = l, j = r, k = l; k <= r; k++) { Enee\!@v  
if (a < b) { "zW3d KVc  
data[k] = temp[i++]; #PnuR2s7.  
a = temp; S,T?(lSl  
} else { }.Eq_wP<  
data[k] = temp[j--]; WqN=  D5  
b = temp[j]; \m-fLX  
} ~~:w^(s9  
} j,Sg?&"%=  
} ~ILig}I  
;9r Z{'i+|  
/**  Q(SVJ  
* @param data 1xK'1g72  
* @param l xt]Z{:.  
* @param i v-6" *EP  
*/ YwGc[9=n  
private void insertSort(int[] data, int start, int len) { r\]yq -_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NfLvK o8  
} l,uYp"F,ps  
} M0!;{1  
} +3.Ik,Z}zq  
} N[ 4v6GS  
}HS:3Dt  
堆排序: ?]gZg[  
Ke[doQ#c  
package org.rut.util.algorithm.support; .(o]d{ '-}  
Li ,B,   
import org.rut.util.algorithm.SortUtil; E_&Hje|J_[  
".L+gn}u-  
/** ^q6H =Dl  
* @author treeroot OJE<2:K  
* @since 2006-2-2 :PtpIVAosg  
* @version 1.0 Hh @q;0ni  
*/ K%LDOVE8e  
public class HeapSort implements SortUtil.Sort{ H e]1 <tx  
E/cA6*E[.<  
/* (non-Javadoc) 70_T;K6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CCKg,v  
*/ G%)?jg@EA  
public void sort(int[] data) { >Bp%~8f  
MaxHeap h=new MaxHeap(); xO'I*)  
h.init(data); ~45u a  
for(int i=0;i h.remove(); GZT}aMMSJ  
System.arraycopy(h.queue,1,data,0,data.length); }C>Q  
} 1"46O Cu{  
dJ\6m!Mp  
private static class MaxHeap{ A9PXu\%y  
q0WW^jwQ  
void init(int[] data){ )gdv!  
this.queue=new int[data.length+1]; =/=x"q+X  
for(int i=0;i queue[++size]=data; Ab7hW(/  
fixUp(size); / uI/8>p(  
} oR}ir  
} y8: 0VZox  
o;Ijv\Em  
private int size=0; 4W8rb'B!Ay  
|Hn[XRsf  
private int[] queue; q! W ~>c!  
1!8*mk_R{  
public int get() { 20m6-rkI<}  
return queue[1]; P Y +~,T2  
} O<4i)Lx2  
2>Kq)Ii  
public void remove() { 1_:1cF{w  
SortUtil.swap(queue,1,size--); UwtOlV:G{  
fixDown(1); Ku LZg  
} wo2^,Y2z+  
file://fixdown g$VcT\X  
private void fixDown(int k) { cJA0$)JP&  
int j; x( w <U1  
while ((j = k << 1) <= size) { O%9Cq}*  
if (j < size %26amp;%26amp; queue[j] j++; 'R*gSqx~  
if (queue[k]>queue[j]) file://不用交换 /Nq!^=  
break; T(+F6d=1  
SortUtil.swap(queue,j,k); V5rnI\:7  
k = j; ^7q=E@[e  
} !mBsDn(J  
} n ! qm  
private void fixUp(int k) { $N;!. 5lX3  
while (k > 1) { Lhl) pP17  
int j = k >> 1; a#H=dIj  
if (queue[j]>queue[k]) x$CpUy{6  
break; oT 8  
SortUtil.swap(queue,j,k); Td[w<m+p<P  
k = j; 0!=e1_  
} GG"0n{>0  
} o0-e,F>u  
M)Rp+uQ  
} ~m!>e])P?X  
qq-&z6;$  
} g|<)J-`Q  
=khjD[muC  
SortUtil: X2@mQ&n  
\$;\,p p  
package org.rut.util.algorithm; P@9>4}r$  
,<hXNN  
import org.rut.util.algorithm.support.BubbleSort; ulfpop*2  
import org.rut.util.algorithm.support.HeapSort; .u7d  
import org.rut.util.algorithm.support.ImprovedMergeSort; S !c/"~X+  
import org.rut.util.algorithm.support.ImprovedQuickSort; d!8q+FI  
import org.rut.util.algorithm.support.InsertSort; 1ISA^< M  
import org.rut.util.algorithm.support.MergeSort; Qm`f5-d  
import org.rut.util.algorithm.support.QuickSort; uW>AH@Pij  
import org.rut.util.algorithm.support.SelectionSort; 3FPy"[[  
import org.rut.util.algorithm.support.ShellSort; &Wd,l$P<O  
2?t(%uf]  
/** e::5|6x  
* @author treeroot  hPr  
* @since 2006-2-2 iN<5[ztd  
* @version 1.0 6?*iIA$b  
*/ ]p'Qk  
public class SortUtil { N["c*=x  
public final static int INSERT = 1; ZfT%EPoZ:  
public final static int BUBBLE = 2; -Qnnzp$]  
public final static int SELECTION = 3; nWFp$tJ/R  
public final static int SHELL = 4; ^'EEry  
public final static int QUICK = 5; :^%s oEi  
public final static int IMPROVED_QUICK = 6; I-/PzL<W P  
public final static int MERGE = 7; y=h2_jt  
public final static int IMPROVED_MERGE = 8; vCH>Fj"7  
public final static int HEAP = 9; q,nj|9z V  
gEKJrAA  
public static void sort(int[] data) { }/c.>U  
sort(data, IMPROVED_QUICK); P05_\ t  
} ?Tuh22J{Q  
private static String[] name={ bDUGzezP<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s+zb[3}  
}; 7]e]Y>wZap  
6/4OFvL1  
private static Sort[] impl=new Sort[]{ "vLqYc4$  
new InsertSort(), nOQ+oqM<  
new BubbleSort(), mf}?z21vD  
new SelectionSort(), :NbD^h)R  
new ShellSort(), O.rk!&N  
new QuickSort(), v@>hjie  
new ImprovedQuickSort(), P]Gsc  
new MergeSort(), *\VQ%_wg  
new ImprovedMergeSort(), o\|dm. "f  
new HeapSort() Dj!J 4uD  
}; YY7:WQS  
\!cqeg*53  
public static String toString(int algorithm){ 8.-PQ  
return name[algorithm-1]; *<9D]  
} I$f:K]|.m!  
Fi5,y;]R  
public static void sort(int[] data, int algorithm) { $,i:#KT`  
impl[algorithm-1].sort(data); K:'pK1zy  
} FC]? T  
*3"C"4S  
public static interface Sort { 9HTb  
public void sort(int[] data); 00;=6q]TA  
} uU5:,Wy+dg  
&<_sXHg<x  
public static void swap(int[] data, int i, int j) { iZjvO`@[  
int temp = data; ][G<CO`k  
data = data[j]; _"WQi}Mm  
data[j] = temp; `n^jU92  
} Kq{s^G  
} ~S-x-cZ  
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