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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。 !W^b:qjJ  
插入排序: {95z\UE}  
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package org.rut.util.algorithm.support; ;OE=;\  
Z$8 X1(o  
import org.rut.util.algorithm.SortUtil; 3A~53W$M  
/** n'dxa<F2|  
* @author treeroot Pk9 4O  
* @since 2006-2-2 3IrmDT  
* @version 1.0 ^t|CD|,K_O  
*/ *2$I, ~(P  
public class InsertSort implements SortUtil.Sort{ <($'jlZ  
Ym)8L.  
/* (non-Javadoc) evbqBb21b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4bT21J37  
*/ [c{/0*  
public void sort(int[] data) { FIB 9W@oao  
int temp; iMrNp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R4?OFhN9  
} ws{2 0  
} L(a){<c  
} K#O8P+n5[  
0K0[mC}ZwM  
} <> jut  
f*+eu @  
冒泡排序: h{dR)#)GF<  
QasUgZ  
package org.rut.util.algorithm.support; N*k`'T  
z[7j`J|Kk  
import org.rut.util.algorithm.SortUtil; Z#n!=k TTm  
}~Am{Er <l  
/** hXvg<Rf  
* @author treeroot ?5%0zMC  
* @since 2006-2-2 oZ)\Ya=  
* @version 1.0 JWu^7}@~=  
*/ ^>g7Kg"0  
public class BubbleSort implements SortUtil.Sort{ |{KZ<  
r%*UU4xvB  
/* (non-Javadoc) z}Qt6na]-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i[gq8%  
*/ fvW7a8k3  
public void sort(int[] data) { gtcU'4~  
int temp; WVP^C71  
for(int i=0;i for(int j=data.length-1;j>i;j--){ gC}r$ZB(  
if(data[j] SortUtil.swap(data,j,j-1); M]S&vE{D  
} JN9 W:X.  
} -Qs4 s  
} RJ#xq#l  
} \= M*x  
M_o<6C  
} $oefG}h2  
9~6FWBt  
选择排序: sknta 0^=2  
L*A9a  
package org.rut.util.algorithm.support; 1^bI9 /  
\]uo^@$bm  
import org.rut.util.algorithm.SortUtil; $)L=MEdx  
W!$aK)]4u  
/** tMWDKatb  
* @author treeroot !'4HUB>+  
* @since 2006-2-2 ?m)3n0Uh  
* @version 1.0 R7/"ye:7J  
*/ 6LGy0dWpG  
public class SelectionSort implements SortUtil.Sort { n4albG4  
@KM !g,f  
/* {b|:q>Be8  
* (non-Javadoc) MEOVw[hO  
* [")3c)OH|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <X7x  
*/ 6cCC+*V{  
public void sort(int[] data) { YTiXU Oj  
int temp; _uvRC+~R  
for (int i = 0; i < data.length; i++) { [LwmzmV+F  
int lowIndex = i; DEGEr-  
for (int j = data.length - 1; j > i; j--) { ,S|v>i, @  
if (data[j] < data[lowIndex]) { |Rh%wJ  
lowIndex = j; ] ~;x$Z)  
} `@8QQB  
} e 1W9Z $m  
SortUtil.swap(data,i,lowIndex); F_m[EB  
} g~5$X{  
} 93z oJiLRf  
&E@8 z&  
} ]fN\LY6p  
l;4},N  
Shell排序: PD @]2lY(  
,W"[q~  
package org.rut.util.algorithm.support; 67/&AiS?  
<&n\)R4C1  
import org.rut.util.algorithm.SortUtil; ,a N8`M  
gNon*\a,-B  
/** _Y7uM6HL\  
* @author treeroot p[E}:kak_-  
* @since 2006-2-2 -Y#YwBy;M  
* @version 1.0 [4V{~`sF  
*/ [25[c><:w"  
public class ShellSort implements SortUtil.Sort{ }L.xt88  
HPGMR4=ANS  
/* (non-Javadoc) o% ZtE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7J ~usF>A  
*/ :iWW2fY  
public void sort(int[] data) { PgNg1  
for(int i=data.length/2;i>2;i/=2){ &E0d{ 2  
for(int j=0;j insertSort(data,j,i); mnK SO  
} b?6-lYE>L  
} z1LN|+\}  
insertSort(data,0,1); `lAe2l^  
} xPFNH`O&  
OH2Xxr[bQ  
/** 2s(c#$JVS  
* @param data ]8)nIT^EP  
* @param j 5PY,}1`  
* @param i 0n5{Wr$  
*/ jB+K)NXHL  
private void insertSort(int[] data, int start, int inc) { !Cq2<[K#  
int temp; +RXKI{0Km  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uJQ#l\t  
} <:[ P&Y  
} u:~2:3B  
} >w,o|  
idWYpU>gC  
} ZT*RD2,  
DnbT<oEL  
快速排序: [If%+mHdU  
-;5WMX 6  
package org.rut.util.algorithm.support; /U |@sw4  
cG)i:  
import org.rut.util.algorithm.SortUtil; fq-zgqF<  
K-%x] Fp=  
/** 3lw KV  
* @author treeroot (;RmfE'PX  
* @since 2006-2-2 \-X Qo  
* @version 1.0 )%8 ;C]G;  
*/ c{YBCWA  
public class QuickSort implements SortUtil.Sort{ aRPpDSR?l  
2Zf} t  
/* (non-Javadoc) G}!dm0s$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Z74e>V%  
*/  4x.1J  
public void sort(int[] data) { }m!L2iK4qk  
quickSort(data,0,data.length-1); 3v~804kWB  
} &e2|]C4  
private void quickSort(int[] data,int i,int j){ +n]z'pijb  
int pivotIndex=(i+j)/2; nE_g^  
file://swap Ce: 2Tw  
SortUtil.swap(data,pivotIndex,j); U^ bF}4m  
A 9 I5  
int k=partition(data,i-1,j,data[j]); @'go?E)f  
SortUtil.swap(data,k,j); 99GzhX_  
if((k-i)>1) quickSort(data,i,k-1); zcF`Z {&+  
if((j-k)>1) quickSort(data,k+1,j); 6[r-8_  
(o+(YV^  
} Q-scL>IkCb  
/** |?zFm mh  
* @param data tOQ2947zk  
* @param i 2~yYwX  
* @param j R#D>m8&}3  
* @return `:=af[n   
*/ )Sz2D[@n  
private int partition(int[] data, int l, int r,int pivot) { rCOH*m&  
do{ 0)@7$Xhf  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >A'Q9Tia;  
SortUtil.swap(data,l,r); azEN_oUV  
} {51<EvyE*  
while(l SortUtil.swap(data,l,r); O[9>^y\,  
return l; |=R@nn   
} cV=0)'&<`_  
O+8]y4%5  
} dvPK5+0W?  
2n/cq K   
改进后的快速排序: @xKfqKoqg  
]+C;C  
package org.rut.util.algorithm.support; XTzz/.T;Z  
/z'fFl^6O  
import org.rut.util.algorithm.SortUtil; *@2+$fgz  
,hMd xZJd  
/** 9j[lr${A  
* @author treeroot a]JQZo1$  
* @since 2006-2-2 nSMw5  
* @version 1.0 hUL5V1-j  
*/ ]3u$%v c  
public class ImprovedQuickSort implements SortUtil.Sort { [(*ObvEF  
L[Z SgRTu  
private static int MAX_STACK_SIZE=4096; <=1nr@L  
private static int THRESHOLD=10; H1!u1k1nl  
/* (non-Javadoc) ;nzzt~aCC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PWavq?SR  
*/ s{QS2G$5  
public void sort(int[] data) { w;e42.\  
int[] stack=new int[MAX_STACK_SIZE]; e}F1ZJz  
vvWje:H  
int top=-1; x{GKz#  
int pivot; Kx8>  
int pivotIndex,l,r; P4h^_*d  
%jS#DVxBR  
stack[++top]=0; S,I|8 YE  
stack[++top]=data.length-1; $w:7$:k  
&:]ej6 V'[  
while(top>0){ =Gl6~lJ{_  
int j=stack[top--]; G<dWh.|`=  
int i=stack[top--]; \{g;|Z 1  
}&E'ox<S  
pivotIndex=(i+j)/2; ]]R!MnU:$  
pivot=data[pivotIndex]; @<^_ _."  
(x+C =1,  
SortUtil.swap(data,pivotIndex,j); h;s~I/e(  
aPELAU-  
file://partition ceKR?%8s  
l=i-1; ~~8?|@V  
r=j; p3e_:5k  
do{ .}xF2'~E/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E%+aqA)f  
SortUtil.swap(data,l,r); oU\Q|mN(  
} _^Ds[VAgA  
while(l SortUtil.swap(data,l,r); (] Zyk, [  
SortUtil.swap(data,l,j); do-mkvk  
0=WZ 8|R  
if((l-i)>THRESHOLD){ Q!%C:b  
stack[++top]=i; I;=HXL  
stack[++top]=l-1; 8!{;yz  
} 5.]eF$x2  
if((j-l)>THRESHOLD){ D&)w =qIu  
stack[++top]=l+1; |i/Iv  
stack[++top]=j; P&6hk6#  
} Q&JnF`*  
E0SP  
} @c >a  
file://new InsertSort().sort(data); o?9k{  
insertSort(data); lZ\Si  
} *8WcRx  
/** 1cA4-,YO>  
* @param data vk^/[eha  
*/ (Lp$EC&%6  
private void insertSort(int[] data) { ;z>?- j  
int temp; Z`W @Od$f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oo+nqc`,O  
} eD#R4  
} %-A#7\  
} W-72&\7  
BAJEn6f?  
} r+#!]wNPe  
y*f 5_  
归并排序: c:$W5j('Z  
`S&$y4|Vs  
package org.rut.util.algorithm.support; \[!k`6#t7  
<`rl[C{  
import org.rut.util.algorithm.SortUtil; r )pg9}+  
xs'vd:l.Pp  
/** N:_U2[V^d  
* @author treeroot !yfQ^a_ O  
* @since 2006-2-2 c)7i%RF'  
* @version 1.0 >$%rsc}^  
*/ Os9;;^k  
public class MergeSort implements SortUtil.Sort{ &*w)/W  
7yp}*b{s  
/* (non-Javadoc) e>GX]tK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QcXqMx  
*/ ,hggmzA~  
public void sort(int[] data) { Sz"rp9x+  
int[] temp=new int[data.length]; f0<'IgN  
mergeSort(data,temp,0,data.length-1); h_SDW %($  
} D:r+3w:l]  
4a]$4LQV  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~EV7E F  
int mid=(l+r)/2; xe=/T# %  
if(l==r) return ; Lwy9QZL  
mergeSort(data,temp,l,mid); '`+GC9VG  
mergeSort(data,temp,mid+1,r); xUKn  
for(int i=l;i<=r;i++){ IM^K]$q$47  
temp=data; A3;}C+K  
} !_ng_,J  
int i1=l; YNRorE   
int i2=mid+1; <8'-azpJ6<  
for(int cur=l;cur<=r;cur++){ t+2!"Jr  
if(i1==mid+1) Vk#wJ-  
data[cur]=temp[i2++]; byyzXRO;  
else if(i2>r) 2G(RQ\Ro*  
data[cur]=temp[i1++]; $_u9Y!  
else if(temp[i1] data[cur]=temp[i1++]; 7*a']W{aJ  
else 9"#,X36  
data[cur]=temp[i2++]; +O2z&a;q  
} figCeJ!W4  
} I Ceb2R  
b/yXE)3 X  
} (B0tgg^jj,  
AJ:(NV1=  
改进后的归并排序: 1pM"j!  
RTEzcJ>  
package org.rut.util.algorithm.support; NJe^5>4`  
}H>}v/  
import org.rut.util.algorithm.SortUtil; h VQj$TA  
\?|FB~.Ry  
/** sXpA^pT"T  
* @author treeroot 65~X!90k  
* @since 2006-2-2 $v6`5;#u  
* @version 1.0 X=W.{?  
*/ #cZ<[K q6  
public class ImprovedMergeSort implements SortUtil.Sort { [5iBXOmpS=  
;mi+[`E  
private static final int THRESHOLD = 10; 2brxV'tk  
|#)S`Ua1  
/* 1U/ dc.x5  
* (non-Javadoc) %]iDhXLr  
* g aq"+@fH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c(R=f +  
*/ k4AF .U`I  
public void sort(int[] data) { (PM!{u=  
int[] temp=new int[data.length];  MoFAQe  
mergeSort(data,temp,0,data.length-1); -/7[\S  
} XITh_S4fs=  
'on8r*  
private void mergeSort(int[] data, int[] temp, int l, int r) { "SV#e4C.  
int i, j, k; zFq8xw  
int mid = (l + r) / 2; Hl3%+f  
if (l == r) =MsQ=:ZV  
return; pSzO )j  
if ((mid - l) >= THRESHOLD) z|^+uL  
mergeSort(data, temp, l, mid); E76#xsyhF  
else Cd"cU~HAB  
insertSort(data, l, mid - l + 1); 6^'BhHP  
if ((r - mid) > THRESHOLD) &azy1.i~  
mergeSort(data, temp, mid + 1, r); _@gd9Fi7J  
else B F,8[|%#  
insertSort(data, mid + 1, r - mid); BSMM3jXb  
uxjx~+qFd  
for (i = l; i <= mid; i++) { @C?.)#  
temp = data; A\1X-Mm  
} Z#1 'STg  
for (j = 1; j <= r - mid; j++) { iz0GL&<  
temp[r - j + 1] = data[j + mid]; S=N3qBH6  
} ?|`Ba-  
int a = temp[l]; n'42CE  
int b = temp[r]; J'=iEI  
for (i = l, j = r, k = l; k <= r; k++) { hA6D*8oXD  
if (a < b) { $r'PYGn  
data[k] = temp[i++]; <uYeev%  
a = temp; kw gsf5[  
} else { 0?{Y6:d+  
data[k] = temp[j--]; C=sEgtEI  
b = temp[j]; k,kr7'Q  
} EJz?GM  
} T|L_ +(M{  
} -fA1_ ?7S  
DMcH, _(  
/** k-zkb2  
* @param data q9^6A90  
* @param l C;EC4n+s  
* @param i $ncJc  
*/ ptlcG9d-  
private void insertSort(int[] data, int start, int len) { \D<w:\P  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); a  St  
} :|V`QM  
} T[<deQ  
} PE\.JU  
} ,ezC}V0M  
RM(MCle}  
堆排序: j mH=W)  
U =G}@Y  
package org.rut.util.algorithm.support; ?C6DK{S(  
^F e %1Lnt  
import org.rut.util.algorithm.SortUtil; v RR(b!Lq  
e0nr dM[i  
/** )^)j=xs  
* @author treeroot 6 #vc"5@M  
* @since 2006-2-2 !go$J]T  
* @version 1.0 + bU*"5"  
*/ {+SshT>J  
public class HeapSort implements SortUtil.Sort{ b;K]; o-/f  
keMfK ]9  
/* (non-Javadoc) yt@;yd:OEk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L#}HeOEi[  
*/ \@K KX  
public void sort(int[] data) { Jj :Bi&C  
MaxHeap h=new MaxHeap(); JR_s-&GaM  
h.init(data); \{RMj"w:  
for(int i=0;i h.remove(); >cV^f6fH  
System.arraycopy(h.queue,1,data,0,data.length); ] C&AU[U*  
} !VXs yH3r5  
}nO[;2Na  
private static class MaxHeap{ M#?^uu'  
p3L0'rY|+  
void init(int[] data){ J,&B   
this.queue=new int[data.length+1]; ^G*zFqa+`  
for(int i=0;i queue[++size]=data; 9td[^EB#(h  
fixUp(size); \GFFPCi4 D  
} j/Dc';,d.(  
} 5J1q]^  
M;$LB@h  
private int size=0; TA"4yri=7x  
kR1dk4I4  
private int[] queue; XoZw8cY  
,o{|W9  
public int get() { 1yg5d9  
return queue[1]; l[cBDNlrC;  
} N;6@f*3_i  
/ad]pdF  
public void remove() { hHoc>S6^M  
SortUtil.swap(queue,1,size--); +,H6)'#Z  
fixDown(1); OfAh? ^R  
} wBbJ \  
file://fixdown rF*L@HI  
private void fixDown(int k) { D |lm,  
int j; |rhCQ"H  
while ((j = k << 1) <= size) { )= :gO`"D  
if (j < size %26amp;%26amp; queue[j] j++; 8!!iwmH{  
if (queue[k]>queue[j]) file://不用交换 M.(shIu!+  
break; ]\8{z"  
SortUtil.swap(queue,j,k); j&qJK,~  
k = j; `Qg#`  
} r{Stsha(  
} `n{yls7.  
private void fixUp(int k) { G=Qslrtg  
while (k > 1) { i]L4kh5  
int j = k >> 1; G9_M~N%a  
if (queue[j]>queue[k]) &E{i#r)'T  
break; TX%W-J _  
SortUtil.swap(queue,j,k); >@T(^=Q  
k = j; uQYBq)p|  
} [|NgrU_.  
} HfN:oww  
"\:ZH[j  
} Y unY'xY  
?#cX_  
} rP=!!fC1;  
#SR"Q`P  
SortUtil: '~Z#h  P  
$:aKb#l)  
package org.rut.util.algorithm; dl%KD8  
R[/]iK+!&  
import org.rut.util.algorithm.support.BubbleSort; <r1N6(n  
import org.rut.util.algorithm.support.HeapSort; Z\)emps  
import org.rut.util.algorithm.support.ImprovedMergeSort; !:7aXT*D$  
import org.rut.util.algorithm.support.ImprovedQuickSort; EA/+~ux  
import org.rut.util.algorithm.support.InsertSort; 'h:[[D%H`  
import org.rut.util.algorithm.support.MergeSort; 4 <&8`Q  
import org.rut.util.algorithm.support.QuickSort; 6$l6>A  
import org.rut.util.algorithm.support.SelectionSort; 2Q/#.lNL  
import org.rut.util.algorithm.support.ShellSort; qDPpGI-Y2e  
Ijs"KAW ?  
/** G3.MS7 J  
* @author treeroot +TR#  
* @since 2006-2-2 yQ3*~d~U|L  
* @version 1.0 pR VL}^Rk  
*/ >UQ`@GdafR  
public class SortUtil { KioD/  
public final static int INSERT = 1; ZYBK'&J4m  
public final static int BUBBLE = 2; ?pLKUAh  
public final static int SELECTION = 3; P!Mz5QZ+  
public final static int SHELL = 4; A)X 'We  
public final static int QUICK = 5; "E><:_,\  
public final static int IMPROVED_QUICK = 6; t\p_QWnF  
public final static int MERGE = 7; ua'dm6",:  
public final static int IMPROVED_MERGE = 8; ?_NhR   
public final static int HEAP = 9; 6J\Yi)v<  
>;ucwLi  
public static void sort(int[] data) { TN=MZ{L  
sort(data, IMPROVED_QUICK); sT^^#$ub  
} OSvv\3=  
private static String[] name={ wJ| wAS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B_B~Y8=3`  
}; xP1`FSO8=  
#&hu-gMV  
private static Sort[] impl=new Sort[]{ ;zbF~5e  
new InsertSort(), i n^Rf` "  
new BubbleSort(), gXR1nnK  
new SelectionSort(), -ty_<m]  
new ShellSort(), cE*Gd^  
new QuickSort(), 54A ndyeA  
new ImprovedQuickSort(), "I|[m%\  
new MergeSort(), I&} Md73  
new ImprovedMergeSort(), !u} }V  
new HeapSort() 4~G++|NQ  
}; X5@rPGc  
CpAdE m{  
public static String toString(int algorithm){ U73{Uv  
return name[algorithm-1]; {FavF 9O  
} Tk'YpL#U  
"ct_EPr`  
public static void sort(int[] data, int algorithm) { ?\7 " A  
impl[algorithm-1].sort(data); Jk.Ec )w  
} Cu%|}xq  
[y>;  
public static interface Sort { tcg sXB/t  
public void sort(int[] data); }b#KV?xgW  
} 4YVxRZ1[3  
XG5mfKMt+  
public static void swap(int[] data, int i, int j) { XZaei\rUn)  
int temp = data; C?FUc cI  
data = data[j]; #eqy!QdePf  
data[j] = temp; k^pf)*p  
} J% B(4`  
} 7[l "=  
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