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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。 ,n+~S^r  
插入排序: !F*CEcB  
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package org.rut.util.algorithm.support; RjCEo4b-.H  
I!-5 #bxD  
import org.rut.util.algorithm.SortUtil; < {dV=  
/** })@LvYK  
* @author treeroot o.H(&ex|  
* @since 2006-2-2 f)K1j{TZ  
* @version 1.0 o5eFLJ6  
*/ ('.r_F  
public class InsertSort implements SortUtil.Sort{ !;^TW$ G  
4 U`5=BI  
/* (non-Javadoc) VjVL/SO/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nt'u;0  
*/ A `n:q;my  
public void sort(int[] data) { u0& dDZ  
int temp; +'!vm6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bfjtNF*^  
} ?rn#S8nNx<  
} ?]L:j  
} ^d2bl,1  
9fL48f$  
} (GdL(H#IL  
$w$4RQk3n  
冒泡排序: f#9\&-h e0  
jFBnP,WQ  
package org.rut.util.algorithm.support; Eo }mSd  
aGz <Yip  
import org.rut.util.algorithm.SortUtil; Ll L8Q  
yXx}'=&!0  
/** i`1QR@11  
* @author treeroot Vi~F Q  
* @since 2006-2-2 L>mv\D;o.  
* @version 1.0 ,4wZ/r> d  
*/ w<]Wg^dyQ  
public class BubbleSort implements SortUtil.Sort{ E}$K&<J'-  
$iA`_H`W  
/* (non-Javadoc) 0#mu[O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T?+xx^wYk  
*/ Rz!E=1Y$  
public void sort(int[] data) { rtz%(4aS  
int temp; y8KJoVP iM  
for(int i=0;i for(int j=data.length-1;j>i;j--){ uz1t uX_  
if(data[j] SortUtil.swap(data,j,j-1); Pxj ?W'|  
} ;ml;{<jI  
} gn? ~y`  
} B%L0g.D"  
} oh5fNx  
;!k1LfN  
}  @GYM4T  
GJA3  
选择排序: .s_wP  
a"{tqNc  
package org.rut.util.algorithm.support; Ve&(izIh  
K@6tI~un  
import org.rut.util.algorithm.SortUtil; 7K`A2  
rBP!RSl1  
/** @Zs}8YhC  
* @author treeroot TZq']Z)#  
* @since 2006-2-2 pbivddi2  
* @version 1.0 @>J4K#"  
*/ /0 ,#c2aq  
public class SelectionSort implements SortUtil.Sort { N"b>]Ab] ;  
#{ M$%l>  
/* 5w`v 3o  
* (non-Javadoc) ()vxTTa  
* 8KD7t&H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JQ%`]=n(/  
*/ Z8Fbx+~"  
public void sort(int[] data) { Q^8C*ekfg!  
int temp; :JqH.Sqk  
for (int i = 0; i < data.length; i++) { Ku_`F2Q  
int lowIndex = i; xv9Z~JwH  
for (int j = data.length - 1; j > i; j--) { EpeTfD  
if (data[j] < data[lowIndex]) { =%|S$J  
lowIndex = j; X LPO_ tD  
} VuFH >8n  
} 5>7ECe*  
SortUtil.swap(data,i,lowIndex); @3{'!#/  
} `7Ni bZX0  
} &|H?J,>  
A%u-6"  
} -ny[Lh^b  
&@A(8(%  
Shell排序: VZJs@qx:Z  
?G1-X~Z8  
package org.rut.util.algorithm.support; @q2Yka  
Ud:v3"1  
import org.rut.util.algorithm.SortUtil; rZ1${/6  
L!DP*XDp  
/** uU6+cDp  
* @author treeroot R1X9  
* @since 2006-2-2 M=e]v9  
* @version 1.0 b3x!tuQn  
*/ cI'&gT5  
public class ShellSort implements SortUtil.Sort{ :=^JHE{  
_odP:  
/* (non-Javadoc) bQb> S<PT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Os$Uui37\  
*/ 3IZ^!J  
public void sort(int[] data) { Z6X?M&-Lz  
for(int i=data.length/2;i>2;i/=2){ "Sc_E}q |e  
for(int j=0;j insertSort(data,j,i); v'S}&zmF]  
} (J][(=s;a  
} MV H^["AeR  
insertSort(data,0,1); v$w!hYsQ  
} fC2e}WR   
\QstcsEt  
/** rcPP-+XW  
* @param data GrW+P[j9  
* @param j GNqw]@'Yf  
* @param i N0sf V  
*/ sbrU;X_S  
private void insertSort(int[] data, int start, int inc) { iQZgs@  
int temp; o';sHa'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b"t!nfgo  
} gpe^G64c`  
} ngcXS2S_  
} ea=@r Ng  
A /,7%bB1  
} A}FEM[2  
pV(b>O  
快速排序: _0 USe  
x1]^].#Eo  
package org.rut.util.algorithm.support; Lf&p2p?~c  
3lqR(Hh3  
import org.rut.util.algorithm.SortUtil; v-3In\T=^  
T/V8&'^i  
/** E#`=xg  
* @author treeroot 07DpvhDQ  
* @since 2006-2-2 @|6n.'f+  
* @version 1.0 [bIdhG  
*/ >;dMumX  
public class QuickSort implements SortUtil.Sort{ j08}5Eo  
KcglpKV`  
/* (non-Javadoc) GN /]^{D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u{,e8. Z  
*/ W^i ct,t  
public void sort(int[] data) { PGsXB"k<8  
quickSort(data,0,data.length-1); Y'&A~/Adf  
} 'xm_oGWE  
private void quickSort(int[] data,int i,int j){ :[ m;#b  
int pivotIndex=(i+j)/2; iv2did4  
file://swap V]tuc s  
SortUtil.swap(data,pivotIndex,j); $(H%|Oyn  
ZMy0iQ@  
int k=partition(data,i-1,j,data[j]); bX:Y5o49  
SortUtil.swap(data,k,j); B\wH`5/KW  
if((k-i)>1) quickSort(data,i,k-1); ?1K|.lr  
if((j-k)>1) quickSort(data,k+1,j); 1hw1AJ}(F  
K4YpE}]u  
} INOw0E[  
/** %|}obiV)  
* @param data w,cfSF;=tC  
* @param i d&4]?8}=.  
* @param j Ci0:-IS  
* @return cJd~UQ<k  
*/ X}Bo[YoY$  
private int partition(int[] data, int l, int r,int pivot) { .p  NWd  
do{ oA%8k51>~K  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l&S2.sC  
SortUtil.swap(data,l,r); [x ?38  
} ,4zwd@&O  
while(l SortUtil.swap(data,l,r); 2`tdH|Z`  
return l; sy=M#WGS  
} Mo\LFxx>4{  
_]a8lr+_-  
} fNNkc[YTZI  
4HQP,  
改进后的快速排序: (xf_  
kRo dC(f @  
package org.rut.util.algorithm.support; "K n JUXpl  
o4,fwPkB  
import org.rut.util.algorithm.SortUtil;  17AJT  
4nQk*:p(X  
/** :Fz;nG-G  
* @author treeroot x%ju(B>  
* @since 2006-2-2 e6f:@ O?  
* @version 1.0 PXqLK3AE  
*/ 2`hc0 IE  
public class ImprovedQuickSort implements SortUtil.Sort { ++n"` ]o,  
-Zx hh  
private static int MAX_STACK_SIZE=4096; sVtx h]  
private static int THRESHOLD=10; Oa~|a7`o  
/* (non-Javadoc) 4A6D>ChB'E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .|[ZEXq  
*/ v-M3/*  
public void sort(int[] data) { NSH20$A<  
int[] stack=new int[MAX_STACK_SIZE]; }6ObQa43   
W`_pjld  
int top=-1; }1E'a>^|  
int pivot; $Y.Z>I;  
int pivotIndex,l,r; hT4 u;3xE  
d MQ]=  
stack[++top]=0; AoB~ZWq  
stack[++top]=data.length-1; ],CJSA!5F  
sk !92mQ  
while(top>0){ vFz%#zk>  
int j=stack[top--]; RU&,z3LEb  
int i=stack[top--]; gM_z`H 5[!  
~wG.'d]  
pivotIndex=(i+j)/2; kx,9n)  
pivot=data[pivotIndex]; V ;Kzh$^rk  
}% (e`[?1  
SortUtil.swap(data,pivotIndex,j); \pI)tnu6'U  
'PPVM@)fU  
file://partition ^9*FYV  
l=i-1; `L p3snS  
r=j; YT7,=k_  
do{ KWtLrZ(j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Hik8u!#P  
SortUtil.swap(data,l,r); ^Q!qJav  
} `k y>M-  
while(l SortUtil.swap(data,l,r); -L e:%q2  
SortUtil.swap(data,l,j); W+k`^A|@  
=f'MiU!p6  
if((l-i)>THRESHOLD){ 8B ZTHlUB  
stack[++top]=i; |Y' xtOMX  
stack[++top]=l-1; ;#c|ZnX  
} mXZOkx{  
if((j-l)>THRESHOLD){ bg.f';C  
stack[++top]=l+1; 7oY}=281  
stack[++top]=j; n{vp&  
} =Gsn4>~%n  
Z}bUvr XP  
} tln*Baq  
file://new InsertSort().sort(data); VYw vT0  
insertSort(data); BM bT:)%  
} "=)i'x"0"  
/** 2yqm$i9C  
* @param data zrfE'C8O  
*/ 0Yz &aH  
private void insertSort(int[] data) { uv*OiB"  
int temp; & sbA:xZBA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y[7*^9J  
} v~-z["=}!  
} GRpS^%8i@  
} l:NEK`>i  
KQsS)ju  
} U" eP>HHp  
vUa~PN+Iy  
归并排序: `_{'qqRhe  
vn;_|NeSf  
package org.rut.util.algorithm.support; b 62 o  
#"|Y"#@k  
import org.rut.util.algorithm.SortUtil; TbyQ'MbUv  
]p3hq1u3&  
/** xR5jy|2JJ  
* @author treeroot v8! 1"FYL  
* @since 2006-2-2 ?_9cFo59:  
* @version 1.0 @W3fKF9*R  
*/ M ,.++W\  
public class MergeSort implements SortUtil.Sort{ yO Cv-zm  
d!) &@k  
/* (non-Javadoc) )fSQTbB;0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .v [8ie  
*/ v ?@Ys+V  
public void sort(int[] data) { Nt42v  
int[] temp=new int[data.length]; 6L@g]f|Y@  
mergeSort(data,temp,0,data.length-1); & i|x2; v  
} ,X6.p  
,ZjbbBZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ k!E`Xeob  
int mid=(l+r)/2; JBQ,rX_Hw  
if(l==r) return ; 4&/u1u 0  
mergeSort(data,temp,l,mid); KfJF9!U*?  
mergeSort(data,temp,mid+1,r); 7V?]Qif~  
for(int i=l;i<=r;i++){ -)@DH;[tb  
temp=data; *=}$@O S  
} MO)N0{.b  
int i1=l; -Zfzl`r  
int i2=mid+1; DV +DJcF  
for(int cur=l;cur<=r;cur++){ vvw6 GB,M  
if(i1==mid+1) h$|K vS  
data[cur]=temp[i2++]; gsuf d{{  
else if(i2>r) ~]?Q'ER  
data[cur]=temp[i1++]; M=n!tVlCV  
else if(temp[i1] data[cur]=temp[i1++]; X tZ0z?  
else Md'd=Y_0  
data[cur]=temp[i2++]; P7d" E  
} m *8[I  
} l){l*~5zl2  
" M8 j?  
} 1g{`1[.QO  
;hNn F&l  
改进后的归并排序: %YefTk8cr,  
=3lUr<Ze  
package org.rut.util.algorithm.support; nU%rSASu  
P:t|'t  
import org.rut.util.algorithm.SortUtil; 4%2QF F @  
hu[=9#''$  
/** wG2lCv`d  
* @author treeroot Y>Q9?>}Q  
* @since 2006-2-2 ]OZZPo  
* @version 1.0 HH+NNSRO  
*/ #B:J7&@fn  
public class ImprovedMergeSort implements SortUtil.Sort { F6Zl#eL  
T=: &W3  
private static final int THRESHOLD = 10; ya{vR* '~  
LlL\7?_;  
/* g*\u8fpRq  
* (non-Javadoc) p #'BV'0bl  
* ]"q[hF*PM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Avd$&::  
*/ )ruC_)  
public void sort(int[] data) { N:[m,U9a  
int[] temp=new int[data.length];  ^"K  
mergeSort(data,temp,0,data.length-1); u*{hXR-"  
} Y'Sxehx  
A{\7HV5  
private void mergeSort(int[] data, int[] temp, int l, int r) { , %mTKOs  
int i, j, k; "R+ x  
int mid = (l + r) / 2; -N^}1^gA  
if (l == r) ]ms#*IZ  
return; i;*c|ma1>  
if ((mid - l) >= THRESHOLD) |M  `B  
mergeSort(data, temp, l, mid); n' 73DApW  
else !(F+~,  
insertSort(data, l, mid - l + 1); &D[dDUdHs  
if ((r - mid) > THRESHOLD) !V$nU8p|  
mergeSort(data, temp, mid + 1, r); vTQQ d@  
else SG |!wH^  
insertSort(data, mid + 1, r - mid); ~ygiKsD6b  
9z\q_ 0&i  
for (i = l; i <= mid; i++) { *pw:oTO  
temp = data; 7'7bIaJk  
} mLPQ5`_  
for (j = 1; j <= r - mid; j++) { tz j]c  
temp[r - j + 1] = data[j + mid]; 71 hv~Nk/x  
} 9 }|Bs=q  
int a = temp[l]; ~^$ONmI5  
int b = temp[r]; MA.1t  
for (i = l, j = r, k = l; k <= r; k++) { F0o7XUt  
if (a < b) { LTS3[=AB  
data[k] = temp[i++]; !sEI|47{  
a = temp; bPC {4l  
} else { B RG1/f d  
data[k] = temp[j--]; P9:7_Vc  
b = temp[j]; I?J$";A  
} wWY6DQQB  
} D(Zux8l  
} :RzcK>Gub=  
J*U,kyYF  
/** "'94E,W  
* @param data (3 8.s:-  
* @param l SEr\ u#  
* @param i kWjCSC>jA  
*/ Ko\m8\3?fK  
private void insertSort(int[] data, int start, int len) { [X#bDO<t  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $n(?oyf  
} J;+tQ8,AP  
} (03m%\  
} 8UwL%"?YB  
} 9Vxsv*OR,  
"}*P9-%  
堆排序: =y,_FFoS  
3*CF!Y%  
package org.rut.util.algorithm.support; #E5Sc\,  
aN ). G1  
import org.rut.util.algorithm.SortUtil; W!4GL>9m}A  
']u w,b  
/** j8M}*1  
* @author treeroot Os*,@N3t  
* @since 2006-2-2 W>wIcUP<<  
* @version 1.0 }=^YLu=  
*/ ?%{bMqYJD{  
public class HeapSort implements SortUtil.Sort{ *1ekw#'  
mdypZ1f_  
/* (non-Javadoc) x/~V ZO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,'= Y  
*/ {}D8Y_=9\  
public void sort(int[] data) { NVS U)#  
MaxHeap h=new MaxHeap(); (jPN+yQ  
h.init(data); "@ Zy+zLU  
for(int i=0;i h.remove(); 0jrcXN~  
System.arraycopy(h.queue,1,data,0,data.length); +VdYT6{p  
} 1e'-rm F  
ym2\o_^(  
private static class MaxHeap{ $T^O38$  
Fr,>|  
void init(int[] data){ 2xni! *T+  
this.queue=new int[data.length+1]; `;(/W h  
for(int i=0;i queue[++size]=data; Um9!<G=;  
fixUp(size); y{? 6U>_  
} uCNQ.Nbf C  
} r@e_cD] M  
xaoaZ3Ko  
private int size=0; \hc}xy 0  
BpDf4)|  
private int[] queue; 67}y/C]<  
?)",}X L6  
public int get() { jzI\Q{[m'  
return queue[1]; NqkRR$O  
} JXftQOn  
_t:rWC"X  
public void remove() { QP7EPaW  
SortUtil.swap(queue,1,size--); H6/@loO!Xy  
fixDown(1); (vz)GrH>  
} UrH^T;#  
file://fixdown Z&s+*& TM  
private void fixDown(int k) {  n1y#gC  
int j; NX@TWBn%  
while ((j = k << 1) <= size) { I = qd\  
if (j < size %26amp;%26amp; queue[j] j++; n4>  
if (queue[k]>queue[j]) file://不用交换 _S,2j_R9  
break; \r324Bw>2  
SortUtil.swap(queue,j,k); 8$v17 3  
k = j; 3y r{B Xn  
} I?4J69'  
} q_OIzZ@  
private void fixUp(int k) { me1ac\  
while (k > 1) { ? RB~%^c!  
int j = k >> 1; #ZCgpg$wM  
if (queue[j]>queue[k]) #MHn J  
break; #bsRL8@  
SortUtil.swap(queue,j,k); Q7"KgqpQ3  
k = j; >]T(}S~  
} oxPOfI1%]  
} 1 YMaUyL 1  
X[j4V<4O  
} '[qG ,^f  
]'~'V2Ey  
} ^zs CF0  
?F AsV&y  
SortUtil: H",yVD  
^yy\CtG  
package org.rut.util.algorithm; W$:;MY>0f  
P%' bSx1  
import org.rut.util.algorithm.support.BubbleSort; ^w8H=UkP!+  
import org.rut.util.algorithm.support.HeapSort; eJ'2 CM6  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,EcmMI^A  
import org.rut.util.algorithm.support.ImprovedQuickSort; [ueT]%  
import org.rut.util.algorithm.support.InsertSort; r.-NfK4  
import org.rut.util.algorithm.support.MergeSort; $'L(}gNv5  
import org.rut.util.algorithm.support.QuickSort; 3c@Cb`w@  
import org.rut.util.algorithm.support.SelectionSort; }`5%2iG  
import org.rut.util.algorithm.support.ShellSort; X]C-y,r[M  
Y&Pi`E9=  
/** 9S=9m[#y'  
* @author treeroot ^5=}Y>EJO  
* @since 2006-2-2 hrU.QF8  
* @version 1.0 $o/ ?R]h  
*/ pA(@gisg  
public class SortUtil { n$5,B*  
public final static int INSERT = 1; +Y)rv6}m  
public final static int BUBBLE = 2; g@MTKqs  
public final static int SELECTION = 3; u6t.$a!5  
public final static int SHELL = 4; >I]t |RT])  
public final static int QUICK = 5; ThJLaNS  
public final static int IMPROVED_QUICK = 6; Nf-IDK  
public final static int MERGE = 7; )w;XicT  
public final static int IMPROVED_MERGE = 8; ^B?{X|U37  
public final static int HEAP = 9; cQ*:U@  
j\@s pbE@  
public static void sort(int[] data) { l:j9lBS  
sort(data, IMPROVED_QUICK); 7S2Bm]fP  
} "F"G(ba^  
private static String[] name={  PovPO  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `hM ]5;0  
}; h!yF   
dfc-#I p?  
private static Sort[] impl=new Sort[]{ +r4US or  
new InsertSort(), ;#` Z(A}  
new BubbleSort(), f+fF5Z\  
new SelectionSort(), 1swh7  
new ShellSort(), %J~8a_vO  
new QuickSort(), Yfxc$ub  
new ImprovedQuickSort(), J>!p^|S{  
new MergeSort(), `j_R ?mY  
new ImprovedMergeSort(), [A*vl9=  
new HeapSort() YCw^u  
}; L!mQP  
*7BY$q  
public static String toString(int algorithm){ +;FF0_   
return name[algorithm-1]; 3~s0ux[  
} <mrLld#_:C  
+vDT^|2SF  
public static void sort(int[] data, int algorithm) { )ckx&e  
impl[algorithm-1].sort(data); ^row=5]E  
} W%0-SR  
3w!oJB  
public static interface Sort { a ^4(7  
public void sort(int[] data); wnt^WW=a[  
} ;bP7|  
-}4H'%Z(i  
public static void swap(int[] data, int i, int j) { f=} u;^  
int temp = data; 0S/&^  
data = data[j]; *Vv ;NA/  
data[j] = temp; )bPNL$O  
} R;I}#b cJ  
} Qbt fKn95  
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