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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。 xEBiBsk d  
插入排序: y=y=W5#;77  
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package org.rut.util.algorithm.support; {~DYf*RZ  
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import org.rut.util.algorithm.SortUtil; k 8^!5n  
/** nOxCni~ T  
* @author treeroot a' "4:(L  
* @since 2006-2-2 j&(2ze:=*$  
* @version 1.0 :5X1Tr= A  
*/  8U!;  
public class InsertSort implements SortUtil.Sort{ Hl"rGA>  
55xv+|k  
/* (non-Javadoc) 4`@]jm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 82F q}N <  
*/ K @3 yS8F  
public void sort(int[] data) { 1aKYxjYM  
int temp; ]@OGp:Hz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n*-t =DF  
} T^h;T{H2  
} bX#IE[Yp}  
} O/\L0\T  
TQm x$  
} y3T- ^  
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冒泡排序: )e.Y"5My  
v)@EK6Nty  
package org.rut.util.algorithm.support; *OU>s;"$  
Xv 3u}nPMq  
import org.rut.util.algorithm.SortUtil; IuDg-M[  
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/** -o\$.Q3  
* @author treeroot %zE_Q  
* @since 2006-2-2 lcgT9 m#  
* @version 1.0 96;17h$  
*/ xQ4D| &  
public class BubbleSort implements SortUtil.Sort{ g|*2O}<  
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/* (non-Javadoc) iMRb` \KH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K 1>.%m  
*/ %]%.{W\j3  
public void sort(int[] data) { q+XL,E  
int temp; v{Cts3?Br  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }$u]aX<  
if(data[j] SortUtil.swap(data,j,j-1); .#R\t 7m%  
} Z!Sv/ 5xx  
} ]T\K-;i  
} $2E n^  
} KZO!  
~Nf0 1,F  
} dq%N,1.F  
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选择排序: C 5QPt  
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package org.rut.util.algorithm.support; N#{d_v^H?d  
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import org.rut.util.algorithm.SortUtil; >nmby|XtW  
E",s]  
/** BMU}NZA  
* @author treeroot <{m!.9g9  
* @since 2006-2-2 3/8o)9f.  
* @version 1.0 DQW^;Ls  
*/ 6Uq@v8mh  
public class SelectionSort implements SortUtil.Sort { quc?]rb  
vPEL'mw/3#  
/* [0CoQ5:d?&  
* (non-Javadoc) 1 GUF,A+_O  
* r$=MBeT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _F xq  
*/ DG8]FhD^b  
public void sort(int[] data) { Et@= <g  
int temp; \{J gjd  
for (int i = 0; i < data.length; i++) { %? +A.0]E  
int lowIndex = i; Z"Z&X0O j  
for (int j = data.length - 1; j > i; j--) { Nj||^k  
if (data[j] < data[lowIndex]) { LFy5tX#  
lowIndex = j; I1U{t  
} 5sC{5LJzC  
} q /EK ]B  
SortUtil.swap(data,i,lowIndex); k:PO"<-U  
} '5wa"/ ?w  
} uRG0} >]|U  
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} =-jkp  
| Q:$G!/  
Shell排序: qgrRH'  
I_.(&hMn  
package org.rut.util.algorithm.support; # 'G/&&<  
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import org.rut.util.algorithm.SortUtil; P, !si#  
%lz\w{  
/** r=4'6!  
* @author treeroot t/WauY2JUC  
* @since 2006-2-2  Y2vzK;  
* @version 1.0 qC?J`   
*/ ]O',Ei^  
public class ShellSort implements SortUtil.Sort{ QU16X  
XyJ*>;q  
/* (non-Javadoc) leyhiL<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  CJg &  
*/ HZCEr6}(  
public void sort(int[] data) { dgpo4'c}  
for(int i=data.length/2;i>2;i/=2){ owZj Q  
for(int j=0;j insertSort(data,j,i); *#e%3N05_  
} vn3<LQ]  
} '#xxjhF^  
insertSort(data,0,1); Rct|"k_"Ys  
} +o(t5O[G  
Je2o('MA  
/** 0z/tceW'F  
* @param data W?~G_4  
* @param j 2NAGXWE  
* @param i zkn K2e,$  
*/ AuUT 'E@E  
private void insertSort(int[] data, int start, int inc) { w_pEup\`  
int temp; m9ts&b+TE  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F6h3M~uR  
} K+Q81<X~  
} f!ehq\K1k  
} 3  8pw  
m9Gyjr'L  
} 2H;&E1:  
7&XU]I  
快速排序: %!%3jo0t  
+oBf\!{cW  
package org.rut.util.algorithm.support; r4dG83qg  
WGKN>nV  
import org.rut.util.algorithm.SortUtil; ][S<M24]Q  
LgRx\*[C*  
/** "5%G [MB  
* @author treeroot ^ $Q',  
* @since 2006-2-2 <F+S}!q  
* @version 1.0 mfFC@~|g  
*/ #9}KC 9f  
public class QuickSort implements SortUtil.Sort{ QD]Vfj4+  
mu)?SGpyE  
/* (non-Javadoc) 4Ub_;EI>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *$/7;CLq  
*/ yw"FI!M  
public void sort(int[] data) { >WE3$Q>bi  
quickSort(data,0,data.length-1); y/mxdP w  
} G%S=K2 v  
private void quickSort(int[] data,int i,int j){ +e<P7}ZQ  
int pivotIndex=(i+j)/2; Fzh%#z0  
file://swap 9vCn^G%B  
SortUtil.swap(data,pivotIndex,j); {=IK(H  
>`n0{:.1za  
int k=partition(data,i-1,j,data[j]); ##Z:/SU  
SortUtil.swap(data,k,j); R"e~0WO  
if((k-i)>1) quickSort(data,i,k-1); SEXeK2v  
if((j-k)>1) quickSort(data,k+1,j); a1 M-F3  
yk!,{Q?<$  
} !vfjo[v  
/** ySP1WK  
* @param data uljd)kLy4O  
* @param i Gv>,Ad ka  
* @param j Sd' uXX@  
* @return dm,7OQ  
*/ ,$Qa]UN5Q  
private int partition(int[] data, int l, int r,int pivot) { QX ishHk&  
do{ v3Tr6[9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f3lFpS  
SortUtil.swap(data,l,r); . l RW  
} ] M "{=z  
while(l SortUtil.swap(data,l,r); ?'CIt5n+\{  
return l; pA"x4\s   
} |4YDvDEJi  
:N\*;>  
} !cE>L~cza  
kLR4?tX!  
改进后的快速排序: m46Q%hwV  
.a:"B\B`  
package org.rut.util.algorithm.support; \E9Z H3;  
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import org.rut.util.algorithm.SortUtil; 6(sqS~D  
yU\&\fD>j  
/** \v9IbU*js  
* @author treeroot .oH0yNFX  
* @since 2006-2-2 u@}((V  
* @version 1.0 T=:O(R1*0  
*/ \:8~na+(  
public class ImprovedQuickSort implements SortUtil.Sort { /tc*jXB  
!~04^(  
private static int MAX_STACK_SIZE=4096; p&B98c  
private static int THRESHOLD=10; &zlwV"W  
/* (non-Javadoc) UA>~xJp=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6/hY[a!  
*/ i&-g 0  
public void sort(int[] data) { n*CH,fih:  
int[] stack=new int[MAX_STACK_SIZE]; ylLQKdcL  
8/U=~*` _  
int top=-1; 'I($IM  
int pivot; Q7&Yy25   
int pivotIndex,l,r; uaNJTob  
%'"#X?jk1  
stack[++top]=0; +Q If7=  
stack[++top]=data.length-1; zAC   
9'o!9_j  
while(top>0){ cE/7B'cR  
int j=stack[top--]; m'KY;C  
int i=stack[top--]; y1,L0v$=}  
Z8(1QU,~2  
pivotIndex=(i+j)/2; .UakO,"z  
pivot=data[pivotIndex]; rhMsZ={M  
x6* {@J&5*  
SortUtil.swap(data,pivotIndex,j); kCL)F\v"iT  
T_\HU*\  
file://partition Ljq/f& c  
l=i-1; $@FD01h.t3  
r=j; m/| >4~  
do{ ]NNLr;p  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); pM@|P,w {  
SortUtil.swap(data,l,r); |]RV[S3v  
} Y]{<IF:  
while(l SortUtil.swap(data,l,r); v{i'o4  
SortUtil.swap(data,l,j); !(*mcYA*W  
x|_%R v  
if((l-i)>THRESHOLD){ zPe4WE|  
stack[++top]=i; /[VafR!  
stack[++top]=l-1; (BVLlOo?J  
} >{~W"  
if((j-l)>THRESHOLD){ =<_xUh.  
stack[++top]=l+1; Ra'0 ^4t  
stack[++top]=j; K0@2>nR  
} @(JcM=  
iH#~eg  
} VFT G3,kI  
file://new InsertSort().sort(data); Vpt)?];P  
insertSort(data); s!~M,zsQN  
} <P3r+ 1|R  
/** 3uwu}aw  
* @param data 1Z'cL~9  
*/ 9hHQWv7TgK  
private void insertSort(int[] data) { FviLlly6  
int temp; -TU7GCb=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Nb>|9nu O  
} r[vMiVb  
} X, <&#l  
} W=j/2c/  
wp-5B= #:{  
} )pjd*+V  
S5@/;T  
归并排序: 9qIUBHe  
SDcxro|8i  
package org.rut.util.algorithm.support; ZwAX+0  
yHurt>8b[  
import org.rut.util.algorithm.SortUtil; K7F uMB  
},2-\-1  
/** =   
* @author treeroot O_ nk8  
* @since 2006-2-2 a_^3:}i~D  
* @version 1.0 mn{8"@Z  
*/ f~jx2?W  
public class MergeSort implements SortUtil.Sort{ l$z[Vh^UU<  
jC*(ZF1B  
/* (non-Javadoc) ,ZJI]Q=!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) COOazXtW  
*/ )F0 _V 4  
public void sort(int[] data) { 'X_iiR8n@p  
int[] temp=new int[data.length];  @zEEX9U  
mergeSort(data,temp,0,data.length-1); Y$--Hp4   
} z_*]joL  
JS642T  
private void mergeSort(int[] data,int[] temp,int l,int r){ e!l!T@ pf  
int mid=(l+r)/2; n>Y3hY  
if(l==r) return ; RsIEY5Q  
mergeSort(data,temp,l,mid); 2xZg, \  
mergeSort(data,temp,mid+1,r); q =b.!AZy  
for(int i=l;i<=r;i++){ /_rQ>PgSZW  
temp=data; (s %T1 8  
} i92{N$*x  
int i1=l; &jl'1mZ  
int i2=mid+1; :@wO' o  
for(int cur=l;cur<=r;cur++){ iH9g5G`O  
if(i1==mid+1) $ N5VoK  
data[cur]=temp[i2++];  V-}d-Y  
else if(i2>r) :M`|*~V~$  
data[cur]=temp[i1++]; Xl#vVyO  
else if(temp[i1] data[cur]=temp[i1++]; 1(gb-u0  
else Y:FV+ SI  
data[cur]=temp[i2++]; t^Aios~F  
} Fla[YWS  
}  / >Wh  
N;F1Z-9  
} -3qB,KT  
X9/V;!  
改进后的归并排序: Mw?nIIu(@  
-fj;9('YJ  
package org.rut.util.algorithm.support; CJJ 1aM  
@ ~ N:F~  
import org.rut.util.algorithm.SortUtil; 4(R O1VWsb  
a)(j68c  
/** //JF$o=)D  
* @author treeroot %aaOws  
* @since 2006-2-2 @I]uK[qd  
* @version 1.0 ]"dZE2!  
*/ Vvm6T@b M8  
public class ImprovedMergeSort implements SortUtil.Sort { b*nyt F  
_R1UEE3M  
private static final int THRESHOLD = 10; t+q LQY}=  
J@"Pv~R  
/* "@gJ[BL#  
* (non-Javadoc) dg4"4\c*P  
* hAOXOj1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V(L~t=k$  
*/ k!xi (l<C  
public void sort(int[] data) { zek\AQN  
int[] temp=new int[data.length]; ,4NvD2Y  
mergeSort(data,temp,0,data.length-1); OZbwquF@  
}  elWN-~  
x1/Usupi  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4.,e3  
int i, j, k; 37ll8  
int mid = (l + r) / 2; 1UJ(._0hR  
if (l == r) vPi\ v U{  
return; ( ]AErz+  
if ((mid - l) >= THRESHOLD) T?) U|  
mergeSort(data, temp, l, mid); ~r]ZD)  
else )3.udx  
insertSort(data, l, mid - l + 1); 6O"Vy  
if ((r - mid) > THRESHOLD) 'M_8U0k  
mergeSort(data, temp, mid + 1, r); `tVBV :4\  
else 7V4 iPx  
insertSort(data, mid + 1, r - mid); a,d\< mx  
Ki^m&P   
for (i = l; i <= mid; i++) { wC{ =o`v  
temp = data; ~"gOq"y 5p  
} 7Hf6$2Wh  
for (j = 1; j <= r - mid; j++) { Sj+ gf~~  
temp[r - j + 1] = data[j + mid]; m,K\e  
} RL~\/#  
int a = temp[l]; #Jy+:|jJ  
int b = temp[r]; /_*:  
for (i = l, j = r, k = l; k <= r; k++) { q .tVNKy%  
if (a < b) { w6Dysg:  
data[k] = temp[i++]; /Or76kE  
a = temp; y@~.b^?_u  
} else { `y;&M8.  
data[k] = temp[j--]; z:+Xs!S  
b = temp[j]; ,T|iA/c  
} oFoG+H"&7\  
} ~NpnRIt  
} Y;e@ `.(  
4-E9a_  
/** a gBKp!  
* @param data )Si`>o3T-.  
* @param l 2a5yJeaIv*  
* @param i *W(b=u  
*/ -3wg9uZ &  
private void insertSort(int[] data, int start, int len) { SQvicZAN)`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y3 LWh}~E  
} 4J!1$   
} :lgIu .  
} 5G(y  
} K.o?g?&<  
? @h  
堆排序: .NCQiQ  
++R-_oQ  
package org.rut.util.algorithm.support; hYi-F.Qtq  
QdUl-(  
import org.rut.util.algorithm.SortUtil; d^ipf*aLC  
A |NX"  
/** OTN"XKa$  
* @author treeroot QdO$,i'  
* @since 2006-2-2 Z'S>i*Ts  
* @version 1.0 XiKv2vwA  
*/ {EW}Wd  
public class HeapSort implements SortUtil.Sort{ }mu8fm'  
dam.D.o"  
/* (non-Javadoc) 6XFO@c}d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /PPk p9H{  
*/ 1?7QS\`)fB  
public void sort(int[] data) { B^h]6Z/O  
MaxHeap h=new MaxHeap(); eFsku8$<  
h.init(data); _[0Ugfz (  
for(int i=0;i h.remove(); 9nM {x?  
System.arraycopy(h.queue,1,data,0,data.length); "D3JdyO_S  
} S _ nTp)  
[0/?(i|  
private static class MaxHeap{ ; wW6x  
MAJvjgd ..  
void init(int[] data){ h2=zvD;  
this.queue=new int[data.length+1]; Qksw+ZjY#{  
for(int i=0;i queue[++size]=data; ;1(OC-2>d  
fixUp(size); DgClN:Hw  
} HeSnj-mtr}  
} 7T4rx53  
d[TcA2nF  
private int size=0; ,LcMNPr  
SB$~Btr  
private int[] queue; *aG0p&n}  
EnwiE  
public int get() { 8Yb/ c*  
return queue[1]; ~\ie/}zYj  
} %}'sFu m`  
F4bF&% R  
public void remove() { <=A&y5o  
SortUtil.swap(queue,1,size--); _QXo4z!a8  
fixDown(1); eRVu/TY  
} pKr3(5~  
file://fixdown JXPn <  
private void fixDown(int k) { @ o;m!CYB  
int j; >x!N@G  
while ((j = k << 1) <= size) { ffE%{B?  
if (j < size %26amp;%26amp; queue[j] j++; 61jDI^:  
if (queue[k]>queue[j]) file://不用交换 6|_ S|N  
break; V#3VRh  
SortUtil.swap(queue,j,k); ;`F0 %0d  
k = j; R L)'m  
} ) }?dYk  
} qIb(uF@l"  
private void fixUp(int k) { laFkOQI  
while (k > 1) { ?#FA a,  
int j = k >> 1; ^e&,<+qY  
if (queue[j]>queue[k]) s-8>AW ep  
break; >vP^l {SD  
SortUtil.swap(queue,j,k); jj.]R+.G  
k = j; ceZt%3=5  
} 3`, m=1[)  
} k{@z87+&  
Ch7eUTq A@  
} AiO,zjM=  
f kP WGd  
} ~_S`zzcZy4  
[FC%_R&&  
SortUtil: YI\^hP#  
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package org.rut.util.algorithm; &TK%igL  
1 ViDS  
import org.rut.util.algorithm.support.BubbleSort; YVs{\1|'  
import org.rut.util.algorithm.support.HeapSort;  1XHGW=n  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8, B9y D  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8Oc*<^{#  
import org.rut.util.algorithm.support.InsertSort; F$+_Z~yt3;  
import org.rut.util.algorithm.support.MergeSort; =?FA9wm  
import org.rut.util.algorithm.support.QuickSort; JBU qZ  
import org.rut.util.algorithm.support.SelectionSort; @|d|orMC  
import org.rut.util.algorithm.support.ShellSort; x6$P(eN  
r)7A# 3wId  
/** WX?|iw I~  
* @author treeroot qa%g'sB-b  
* @since 2006-2-2 CdEJ/G:  
* @version 1.0 %mxG;w$  
*/ $}HSU>,%  
public class SortUtil { W?6RUyMC$T  
public final static int INSERT = 1; +x4o#N  
public final static int BUBBLE = 2; $6Ty~.RP5H  
public final static int SELECTION = 3; 7L]fCw p[  
public final static int SHELL = 4; wz:wR+  
public final static int QUICK = 5; [9>1e  
public final static int IMPROVED_QUICK = 6; -MOf[f^  
public final static int MERGE = 7; ~Q6ufTGhpM  
public final static int IMPROVED_MERGE = 8; C w$y  
public final static int HEAP = 9; +VU,U`W  
+,PBhB  
public static void sort(int[] data) { .WtaU  
sort(data, IMPROVED_QUICK); &}P62&  
} !{ )H  
private static String[] name={ bfrBHW#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D.\p7 NJ  
}; -M/ny-; `}  
P+Hs6Q  
private static Sort[] impl=new Sort[]{ v,2{Vr  
new InsertSort(), E%40u.0  
new BubbleSort(), {v2Q7ZO-  
new SelectionSort(), sRYFu%  
new ShellSort(), =o5hD,>e  
new QuickSort(), Sc*p7o: A  
new ImprovedQuickSort(), 4Ly!:GH3T  
new MergeSort(), -bE{yT)7  
new ImprovedMergeSort(), &JP-M=\n  
new HeapSort() LiN{^g^fx  
}; ]huqZI  
/Wzic+v<>  
public static String toString(int algorithm){ K_}vmB\2l  
return name[algorithm-1]; ,AM6E63  
} ;=_KLG <  
ZA:YoiaC#  
public static void sort(int[] data, int algorithm) { VT-&"Jn  
impl[algorithm-1].sort(data); 'rz*mR8  
} P'FI'2cN7  
H!vvdp?Z  
public static interface Sort { BWQ (>Z"  
public void sort(int[] data); #V~r@,  
} bup;4~g  
D^f;dT;-  
public static void swap(int[] data, int i, int j) { LM<OYRB(  
int temp = data; !d"J,.)  
data = data[j]; L$Ss]Ar=  
data[j] = temp; E8)C_[QJ`  
} M22 ^.,Z  
} 7@C :4c@0  
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