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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。 +*[lp@zU{  
插入排序: pR2QS  
ev>gh0  
package org.rut.util.algorithm.support; 1R)4[oYN\<  
j+Nun  
import org.rut.util.algorithm.SortUtil; G S-@drZp_  
/** vX})6O  
* @author treeroot L.bR\fE   
* @since 2006-2-2 oDul ?%  
* @version 1.0 Klh7&HzR  
*/ )sG`sET]`f  
public class InsertSort implements SortUtil.Sort{ F+Og8^!  
+DS_'Tmr  
/* (non-Javadoc) 7g3vh%G.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m sS5"Qr  
*/ I&|%Fn  
public void sort(int[] data) { K2<Q9 ,vt  
int temp; aG QC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uW!',"0ER  
} P: &XtpP  
} xqv4gN6  
} siw } }}  
k}y1IW+3  
} \I; lgz2  
_*B]yz6z  
冒泡排序: ?:OL8&0  
TFWV(<  
package org.rut.util.algorithm.support; hdtb.u~  
n= yT%V. l  
import org.rut.util.algorithm.SortUtil; ;1}~(I#Y  
qsXK4`  
/** ^R\0<\'  
* @author treeroot WlU^+ctS  
* @since 2006-2-2 b Mi,z3z  
* @version 1.0 v-2O{^n  
*/ ,g%2-#L%  
public class BubbleSort implements SortUtil.Sort{ {E!ie{~  
8C4DOz|  
/* (non-Javadoc) QbqEe/*$_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FQ>KbZh  
*/ qczGv2%!  
public void sort(int[] data) { 'E+Ty(ED5  
int temp; j?4k{?x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ W!4(EdT*Cq  
if(data[j] SortUtil.swap(data,j,j-1); E[HXbj"  
} TTpK8cC  
} #4_'%~-e  
} Ua]shSjyI  
} =@;uDu:Q  
j K?GB  
} Z8+{ -  
^Fgmwa'  
选择排序: ZWaHG_ U)  
.)|r!X  
package org.rut.util.algorithm.support; W4Nbl  
@ae;&  
import org.rut.util.algorithm.SortUtil; #p}I 84Q  
mR:G,XytxM  
/** ECqcK~h#E  
* @author treeroot g76l@QYIU  
* @since 2006-2-2 J2 {?P cs  
* @version 1.0 A~&Tp  
*/ " jly[M}C  
public class SelectionSort implements SortUtil.Sort { 5$0@f`sj  
H2`aw3  
/* B ?96d'A  
* (non-Javadoc) Alaq![7MDP  
* Se+sgw_"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v.H00}[.  
*/ Wfgs[  
public void sort(int[] data) { }Wjb0V  
int temp; szN`"Yi){  
for (int i = 0; i < data.length; i++) { +xMK.*H]W  
int lowIndex = i; L}lOA,EF  
for (int j = data.length - 1; j > i; j--) { E#X1P #$pW  
if (data[j] < data[lowIndex]) { !mH2IjcL  
lowIndex = j; >Du5B&41  
} /PF X1hSu  
} $EHAHNL?Lx  
SortUtil.swap(data,i,lowIndex); d-nqV5  
} JaP2Q} &B  
} X(kyu,w  
;o }pRC  
} @SeE,<  
j4Ppn  
Shell排序: We% -?l:"  
Q.Uyl:^PxU  
package org.rut.util.algorithm.support; 0\# uxzdhJ  
DZKVZ_q  
import org.rut.util.algorithm.SortUtil; O?|opD  
5fuOl-M0W  
/** DJP)V8]!B  
* @author treeroot ~.7r  
* @since 2006-2-2 Y}%=:Yt  
* @version 1.0 v`evuJ\3  
*/ YqwDvJWX  
public class ShellSort implements SortUtil.Sort{ gE'b.04Y9i  
.w2X24Mmb  
/* (non-Javadoc) _!6~o>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OnFx8r:q@%  
*/ V}(snG,  
public void sort(int[] data) { pH5"g"e1  
for(int i=data.length/2;i>2;i/=2){ vk:@rOpl  
for(int j=0;j insertSort(data,j,i); rCqcl  
} M0g!"0?  
} =o]V!MW  
insertSort(data,0,1); fM,U|  
} /Hb'3,jN  
g-j`Ex%  
/** 7c$;-O  
* @param data v[WbQ5AND  
* @param j )$V}tr!  
* @param i \ a18Hp|%  
*/ Ag QR"Nu6  
private void insertSort(int[] data, int start, int inc) { a.QF`J4"'  
int temp; zbn0)JO  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !^BXai/  
} [Dd?c,5AD  
} 95jJ"4a+  
} kuq3QW<  
o!EPF-:  
} Qa~dd{?  
3lYM(DT  
快速排序: .6S]\dp7~  
NY(c4fzl  
package org.rut.util.algorithm.support; zB`)\  
e{@TR x  
import org.rut.util.algorithm.SortUtil; P [-2^1P"  
5\/h3 i"I  
/** rSDS9Vf(  
* @author treeroot c-8Pc ]+g  
* @since 2006-2-2 gn"_()8cT  
* @version 1.0 S?*pCJ0  
*/ i)=!U>B_0  
public class QuickSort implements SortUtil.Sort{ | W:JI  
fdP[{.$?(  
/* (non-Javadoc) YO o?.[}@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Ziq^o.  
*/ \NwL#bQ~  
public void sort(int[] data) { mle"!*  
quickSort(data,0,data.length-1); [I:D\)$<  
} 2^N 4(  
private void quickSort(int[] data,int i,int j){ d[;=X.fZ2  
int pivotIndex=(i+j)/2; 8$}1|"F  
file://swap AU@K5jwDwQ  
SortUtil.swap(data,pivotIndex,j); zn|~{9>y  
`vWFTv  
int k=partition(data,i-1,j,data[j]); Rg~ ~[6G>  
SortUtil.swap(data,k,j); J2H/z5YRJ4  
if((k-i)>1) quickSort(data,i,k-1); sxcpWSGA^  
if((j-k)>1) quickSort(data,k+1,j); bAv>?Xqa  
$FUWB6M  
} U{n< n8  
/** A7@5lHMF  
* @param data :FOMRrf7.  
* @param i H^P uC (  
* @param j %IGcn48J  
* @return ZZqImB.Cz6  
*/ F<y$Q0Z}  
private int partition(int[] data, int l, int r,int pivot) { s>Xx:h6m  
do{ I8 Ai_^P  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ':6!f  
SortUtil.swap(data,l,r); gHc0n0ZV  
} 5]n5nqz  
while(l SortUtil.swap(data,l,r); c%Ht; sK`*  
return l; JI-q4L|  
} AK%2#}k.  
FaO1?.  
} f6n'g:&.W  
IKSe X  
改进后的快速排序: e -vL!&;2  
-Gjz;/s%XH  
package org.rut.util.algorithm.support; qD:3;85  
bf ]W_I]B  
import org.rut.util.algorithm.SortUtil; $r})j~c  
M;*f(JY$  
/** {2?o:  
* @author treeroot n`<YhV  
* @since 2006-2-2 %|md0  
* @version 1.0 3uA%1 E  
*/ .zf#S0y%(  
public class ImprovedQuickSort implements SortUtil.Sort { aV3:wp]Gn  
!IlsKMZ  
private static int MAX_STACK_SIZE=4096; a!YpSFr  
private static int THRESHOLD=10;  mD`v>L  
/* (non-Javadoc) *ZP$dQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m }I@:s2  
*/ '&4W@lvyz  
public void sort(int[] data) { I\J ^@&JE  
int[] stack=new int[MAX_STACK_SIZE]; _IiTB  
P wL]v.:  
int top=-1; d>@&[C!28  
int pivot; !ckmNE0  
int pivotIndex,l,r; dbF?#s~u  
p<IMWe'tP  
stack[++top]=0; Om`VQ?  
stack[++top]=data.length-1; S(xlN 7=  
+$R4'{9q  
while(top>0){ t.Hte/,k  
int j=stack[top--]; {w*5uI%%e  
int i=stack[top--]; #M$Gj>E%4  
I_66q7U"0  
pivotIndex=(i+j)/2; ?u`+?" 'H  
pivot=data[pivotIndex]; Tvf%'%h1  
"@Ir Bi6  
SortUtil.swap(data,pivotIndex,j); Ng=XH"ce~  
D9 `J||]E  
file://partition OL|_@Fv`A  
l=i-1; B ^>}M  
r=j; .: ~);9kj  
do{ RL0,QC)e#@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GZgu1YR  
SortUtil.swap(data,l,r); tVJ}NI #  
} 9&e=s<6dO  
while(l SortUtil.swap(data,l,r); {,z$*nf  
SortUtil.swap(data,l,j); 3dm lP2  
;`<uo$R  
if((l-i)>THRESHOLD){ ir^%9amh  
stack[++top]=i; Dj!v+<b  
stack[++top]=l-1; CjRI!}S  
} []R`h*#  
if((j-l)>THRESHOLD){ Yg_;Eu0'?  
stack[++top]=l+1; 4E[ 9)n+YV  
stack[++top]=j; P9(]9np,,  
} L|hsGm\  
c\.Hs9T >  
} T;/Y/Fd  
file://new InsertSort().sort(data); YU! SdT$  
insertSort(data); ZZ/F}9!=  
} <n+?7`d,  
/** ?2h)w=dO  
* @param data D=*3Xd  
*/ /~`4a  
private void insertSort(int[] data) { [7d>c  
int temp; 26n+v(re  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2S'{$m)  
} m,U Mb#7Y  
} .|=~x3mPw  
} ;{@ [ek6  
.ET@J`"M  
} $kPC"!X\  
>|h$d:~n  
归并排序: 8BP.VxX  
Ak(_![Q:q\  
package org.rut.util.algorithm.support; .{,PC  
yTj!(C  
import org.rut.util.algorithm.SortUtil; .Y!] {c  
p'PHBb8I  
/** aH6{_eY  
* @author treeroot aKi&2>c5>  
* @since 2006-2-2 9I3vW]0x[  
* @version 1.0 ,S.<qmf  
*/ r)S tp`p  
public class MergeSort implements SortUtil.Sort{ #NU;$ &  
WDznhMo  
/* (non-Javadoc) 9C;Hm>WEpP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'n1-?T)  
*/ QkMK\Up  
public void sort(int[] data) { c@p4,G  
int[] temp=new int[data.length]; ,l}mCY  
mergeSort(data,temp,0,data.length-1); Vgzw['L}  
} >^mNIfdE^=  
!ho~@sc{W  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,+`1/  
int mid=(l+r)/2; IK#W80y  
if(l==r) return ; "`Y.N$M`k  
mergeSort(data,temp,l,mid); ~fL:pVp  
mergeSort(data,temp,mid+1,r); (J!FW(Ma|=  
for(int i=l;i<=r;i++){ Mf [v7\  
temp=data; .9r+LA{  
} ;IklS*p]  
int i1=l; &OpGcbf1  
int i2=mid+1; Ur^~fW1 o  
for(int cur=l;cur<=r;cur++){ cb ICO  
if(i1==mid+1) t^N 92$|  
data[cur]=temp[i2++]; a>w@9   
else if(i2>r) VKzY6  
data[cur]=temp[i1++]; z D&5R/I  
else if(temp[i1] data[cur]=temp[i1++]; !nX}\lw  
else z@WuKRsi  
data[cur]=temp[i2++]; 6$42 -a%b  
} ~nul[>z  
} fb8"hO]s  
6]`XW 0{C  
} `$V7AqX(  
V4c$V]7  
改进后的归并排序: >GRL5Iow  
e+Qq a4  
package org.rut.util.algorithm.support; Z' cQ< f  
cY&SKV#  
import org.rut.util.algorithm.SortUtil; /{|<3CEe  
kVu8/*Q  
/** bwH l}3  
* @author treeroot G8Hj<3`  
* @since 2006-2-2 Q<TD5t9  
* @version 1.0 y]1:IJL2;  
*/ TRB)cJZ?  
public class ImprovedMergeSort implements SortUtil.Sort { d=?Kk4Ag  
KC@F"/h`/  
private static final int THRESHOLD = 10; GtYtB2U  
AGxtmBB;  
/* B.:DW3  
* (non-Javadoc) dy>iIc>  
* `gI`Cq4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Q-Y$ ^\  
*/ *{3&?pxx  
public void sort(int[] data) { !rmXeN]-r  
int[] temp=new int[data.length]; Q@M>DA!d^V  
mergeSort(data,temp,0,data.length-1);  ;'^5$q  
} EN OaC  
TDvUiJm  
private void mergeSort(int[] data, int[] temp, int l, int r) { 41\r7 BS  
int i, j, k; m 6V:x/'=  
int mid = (l + r) / 2; +kh#Jq.  
if (l == r) # X~{p4Lr  
return; Fbvw zZ  
if ((mid - l) >= THRESHOLD) S1_X@[t  
mergeSort(data, temp, l, mid); xR9<I:^&  
else NF/@'QRT  
insertSort(data, l, mid - l + 1); .#py5&`%  
if ((r - mid) > THRESHOLD) YX||\  
mergeSort(data, temp, mid + 1, r); n veHLHvC7  
else .=y-T=}  
insertSort(data, mid + 1, r - mid); e1*<9&S  
o6{[7jI  
for (i = l; i <= mid; i++) { Mi|PhDXMh  
temp = data; >]6 inS9  
} ;.%Ii w&WG  
for (j = 1; j <= r - mid; j++) {  bnll-G|  
temp[r - j + 1] = data[j + mid]; z|';Y!kQ  
} `5VEGSP]  
int a = temp[l]; ~d+.w%Z `  
int b = temp[r]; Gz>M Y4+G  
for (i = l, j = r, k = l; k <= r; k++) { <<xUh|zE  
if (a < b) { B/P E{ /  
data[k] = temp[i++]; 9XU"Ppv  
a = temp; iy{n"#uX  
} else { xwSi}.  
data[k] = temp[j--]; 5C03)Go3Z  
b = temp[j]; w!~%v #  
} | rY.IbL  
} f:/[  
} q7itznQSKc  
sbWen?  
/** Pfy2PpA  
* @param data |AY`OVgcKD  
* @param l C26vH#C  
* @param i NGA8JV/U  
*/ }sbh|#  
private void insertSort(int[] data, int start, int len) { V$D+Joj  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mM6g-)cV  
} =Gka;,n  
} -pWnO9q  
} (e:@7W)L  
} 7=$@bHEF#*  
?*2DR:o>@  
堆排序: v'x)AbbC  
^lF'KW$  
package org.rut.util.algorithm.support; X\?PnD`,  
8M{-RlR  
import org.rut.util.algorithm.SortUtil; [2]Ti_ >D  
IK:F~I  
/** b^SQCX+P  
* @author treeroot E?L^ L3s  
* @since 2006-2-2 ZGstD2 N$  
* @version 1.0 'N-nFc^  
*/ %Tc P[<  
public class HeapSort implements SortUtil.Sort{ rQ_!/J[9  
?{@UB*  
/* (non-Javadoc) zz4TJ('  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z *9Qeu-N:  
*/ H9@24NFb  
public void sort(int[] data) { C'6 yt  
MaxHeap h=new MaxHeap(); X(sN+7DOV  
h.init(data); Ec44JD  
for(int i=0;i h.remove(); (\CT "u-  
System.arraycopy(h.queue,1,data,0,data.length); f)~j'e  
} 9 -Y.8:A`  
 3M5+!H  
private static class MaxHeap{ K>!+5A$6i  
NJ^H"FLS:  
void init(int[] data){ !=C74$TH  
this.queue=new int[data.length+1]; PrA?e{B5m  
for(int i=0;i queue[++size]=data; lT`y=qR|  
fixUp(size); 0E6>P E;  
} S;!l"1[;  
} : h"Bf@3  
{8!\aYI  
private int size=0; 0QWc1L  
~1_v;LhH5+  
private int[] queue; 29W~<E8K-  
Dz<"eyB\  
public int get() { ;y"=3-=vM"  
return queue[1]; q_5hKipd\b  
} hKG)* Q  
=/ b2e\  
public void remove() { -E*VF{IG1  
SortUtil.swap(queue,1,size--); kOu C@~,  
fixDown(1); \`FpBE_e)  
} KdBE[A-1^M  
file://fixdown EWcqMD]4u  
private void fixDown(int k) { x] e &G!|  
int j; Bl\/q83(  
while ((j = k << 1) <= size) { B)q 5m y  
if (j < size %26amp;%26amp; queue[j] j++; 676r0`  
if (queue[k]>queue[j]) file://不用交换 vlygS(Y_7  
break; X9|={ng)g#  
SortUtil.swap(queue,j,k); +,"O#`sy<  
k = j; S:.Vt&+NJ  
} ws^ 7J/8  
} !>n^ ;u  
private void fixUp(int k) { i!|OFU6  
while (k > 1) { 5<Lal^c D  
int j = k >> 1; 2 Nr*  
if (queue[j]>queue[k]) HDV@d^]-  
break; 4#dS.UfI  
SortUtil.swap(queue,j,k); ( 04clU^F  
k = j; _4Ciai2Ql  
} c.<bz  
} l r16*2.  
K!L0|W H%!  
} _LYI#D  
vtm?x,h  
} q6A"+w,N  
:1O49g3R  
SortUtil: t08E 2sI  
u3[A~V|0=  
package org.rut.util.algorithm; )BJ Z{E*  
[EdX6  
import org.rut.util.algorithm.support.BubbleSort; +*'^T)sj/  
import org.rut.util.algorithm.support.HeapSort; \& KfIh8  
import org.rut.util.algorithm.support.ImprovedMergeSort; >[$j(k^  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1@$n )r`  
import org.rut.util.algorithm.support.InsertSort; AW6"1(D  
import org.rut.util.algorithm.support.MergeSort; L}*s_'_e^>  
import org.rut.util.algorithm.support.QuickSort; Cyn_UE  
import org.rut.util.algorithm.support.SelectionSort; `vMrlKq  
import org.rut.util.algorithm.support.ShellSort; _? aI/D  
u{Rgk:bn  
/** AA&5wDMV>  
* @author treeroot NFAjh?#  
* @since 2006-2-2 $,s"c(pv[,  
* @version 1.0 [v,Y-}wQ)  
*/ xE0'eC5n^  
public class SortUtil { l-~ o&n  
public final static int INSERT = 1; #9's^}i  
public final static int BUBBLE = 2; w1N-`S:  
public final static int SELECTION = 3; (8XP7c]5  
public final static int SHELL = 4; rQrh(~\:  
public final static int QUICK = 5; @v:p)|Ne;  
public final static int IMPROVED_QUICK = 6; (E*pM$  
public final static int MERGE = 7; ^U5g7Emf  
public final static int IMPROVED_MERGE = 8; 8c1ma  
public final static int HEAP = 9; Ig.9:v`  
o 9?#;B$  
public static void sort(int[] data) { [f8mh88 r  
sort(data, IMPROVED_QUICK); )C1ihm!7\  
} GIs *;ps7w  
private static String[] name={ gO9\pI 2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <$:Hf@tpMo  
}; *# 7 1aZ  
n0T>sE -9  
private static Sort[] impl=new Sort[]{ D.ajO^[  
new InsertSort(), ?gGmJl  
new BubbleSort(), %]KOxaf_z  
new SelectionSort(), >3,t`Z:  
new ShellSort(), 9 M<3m  
new QuickSort(), fxcCz 5  
new ImprovedQuickSort(), '^6jRI,  
new MergeSort(), i*3*)ly  
new ImprovedMergeSort(), +{7/+Zz  
new HeapSort() W["c3c  
}; IW~q,X+`V  
UpoTXA D}k  
public static String toString(int algorithm){ a6/$}lCq  
return name[algorithm-1]; v"~0 3-SX  
} f:!b0j  
U~nW>WJ+.  
public static void sort(int[] data, int algorithm) { 2Jl$/W 3  
impl[algorithm-1].sort(data); EPn0ZwnS:M  
} Ra~|;( %d  
{~=Z%Cj2Q  
public static interface Sort { BT3X7Cx  
public void sort(int[] data); eGEeWJ}[$  
} M{   
t:N3k ;k  
public static void swap(int[] data, int i, int j) {  FTk`Mq  
int temp = data; & 6-8$  
data = data[j]; :Qd{V3*]  
data[j] = temp; ~d)2>A 2:  
} uJg|  
} [\|p~Qb)s  
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