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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。 <2P7utdZ  
插入排序: 2go>  
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package org.rut.util.algorithm.support; <5Mrp"C[i  
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import org.rut.util.algorithm.SortUtil; Dr"/3xm  
/** mPVE?jnR^0  
* @author treeroot ?|t/mo|K?  
* @since 2006-2-2 w&lZ42(mF  
* @version 1.0 5su.+4z\  
*/ f(u&XuZ  
public class InsertSort implements SortUtil.Sort{ ]RFdLV?  
g<[rH%\6fg  
/* (non-Javadoc) dA#{Cn;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F1A1@{8bN  
*/ `% E9xcD%  
public void sort(int[] data) { ~r`Wr`]_z  
int temp; )XVh&'(r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B[xR-6phW  
} Xi~9&ed#$i  
} PX3  
} h}=M^SL  
&P n]  
} Z|`fHO3j  
=%h~/,  
冒泡排序: nN ~GP"}  
[a8+(  
package org.rut.util.algorithm.support; ^&:'NR  
O2H/rFx4  
import org.rut.util.algorithm.SortUtil; c)1=U_61  
wR7aQg  
/** c d%hW  
* @author treeroot p~bkf>  
* @since 2006-2-2 3B,QJ&  
* @version 1.0 o?!uX|Fy  
*/ 0MpS4tW0=  
public class BubbleSort implements SortUtil.Sort{ ~+m,im8}  
9)Yw :  
/* (non-Javadoc) ]A!.9Ko}u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hmGdjw t$  
*/ <7g Ml  
public void sort(int[] data) { [(c L/_  
int temp; ,z66bnjO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `Ei"_W  
if(data[j] SortUtil.swap(data,j,j-1); m,NMTyJoz  
} M j~${vj  
} `45d"B I  
} [$2qna2VP  
} t&"5dM\  
RWahsJTu  
} B/Ba5z"r$  
HtzMDGV<  
选择排序: qWB%),`j>  
q 22/_nSC  
package org.rut.util.algorithm.support; %}F"*.  
zPQ$\$7xB  
import org.rut.util.algorithm.SortUtil; om7`w ]  
 6`"ZsO  
/** 4!2SS  
* @author treeroot *o|p)lH  
* @since 2006-2-2 %UmbDGDWI  
* @version 1.0 lCE2SKj  
*/ 2k3 z'RLG  
public class SelectionSort implements SortUtil.Sort { FR'b`Xv:  
_5h0@^m7y  
/* p#M!S2&z  
* (non-Javadoc) 3o7xN=N  
* B&nw#saz.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AijUs*n 2  
*/ :bw6k  
public void sort(int[] data) { 3"B+xbe=  
int temp; 4sd-zl$Of  
for (int i = 0; i < data.length; i++) { U$$3'n  
int lowIndex = i; 8D T@h8tA  
for (int j = data.length - 1; j > i; j--) { ?zE<  
if (data[j] < data[lowIndex]) { 4[H,3}p9H  
lowIndex = j; jf7pl8gv  
} Y\>\[*.v  
} !47A$sQ  
SortUtil.swap(data,i,lowIndex); 'WzUu MCx  
} Q=XA"R  
} $9m5bQcV  
htg'tA^CtS  
} G4"lZM  
0nT%Slbih  
Shell排序: TA9dkYlE/  
YUS?]~XC7x  
package org.rut.util.algorithm.support; 165WO}(;/  
2HVCXegq  
import org.rut.util.algorithm.SortUtil; |lHFo{8"  
Wbs^(iUU}  
/** 9!S^^;PN&  
* @author treeroot Deog4Ol"/  
* @since 2006-2-2 d5q4'6o,  
* @version 1.0 ;;6\q!7`  
*/ 5 {fwlA  
public class ShellSort implements SortUtil.Sort{ Qf~| S9,  
;y ,NC2Xj  
/* (non-Javadoc) ujNt(7Cz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,{TQ ~LP  
*/ ,@,LD  u  
public void sort(int[] data) { /W``LK>;?  
for(int i=data.length/2;i>2;i/=2){ }*OD M6  
for(int j=0;j insertSort(data,j,i); Z c<]^QR  
} z}mvX .j7  
} ?P YNE  
insertSort(data,0,1); V!}L<cN  
} yx 7loy$[  
;HT0w_,  
/** >T(M0Tkt  
* @param data !~tnt i6  
* @param j $;ch82UiX  
* @param i 4&H+hN{3  
*/ kEx8+2s=M  
private void insertSort(int[] data, int start, int inc) { H7J`]nr6  
int temp; $TFTIk*uU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lWIv(%/@  
} @#1cx  
} I@+lFG   
} ,$o-C&nC  
_4~k3%w\`l  
} (J/>Gy)d  
NywB 3  
快速排序: j5'.P~  
2;O  c^  
package org.rut.util.algorithm.support; T?Z OHH8  
%pd5w~VP  
import org.rut.util.algorithm.SortUtil; _RgxKp/d  
`$f\ %  
/** %d ZM9I0  
* @author treeroot YlG; A\]k  
* @since 2006-2-2 E#8J+7  
* @version 1.0 .!!79 6hS  
*/ q^u6f?B  
public class QuickSort implements SortUtil.Sort{ z{@= _5;  
A"`L~|&  
/* (non-Javadoc) M3)v-"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R<_mK33hd  
*/ h#vL5At  
public void sort(int[] data) { 3s#|Y,{?6R  
quickSort(data,0,data.length-1); !Q[;5Lqt  
} W&WB@)ie  
private void quickSort(int[] data,int i,int j){ KPD@b=F  
int pivotIndex=(i+j)/2; X"laZd947>  
file://swap }#YIl@E  
SortUtil.swap(data,pivotIndex,j); %+/f'6kR  
xAFek;GY?  
int k=partition(data,i-1,j,data[j]); fYv ;TV>73  
SortUtil.swap(data,k,j); 5 1v r^  
if((k-i)>1) quickSort(data,i,k-1); !2/l9SUi  
if((j-k)>1) quickSort(data,k+1,j); 1w(<0Be  
=lYvj  
} UU*0dSWr  
/** tbL1g{Dz,  
* @param data X9p+a,  
* @param i LqMe'z  
* @param j 7 _X&5ni  
* @return #tCIuQ,  
*/ e OO!jrT:  
private int partition(int[] data, int l, int r,int pivot) { C+}CU}  
do{ zUvB0\{q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i%#th'C!P  
SortUtil.swap(data,l,r); 5R$=^gE  
} :Fw *r|  
while(l SortUtil.swap(data,l,r); ,P;8 }yQ  
return l; %?U"[F1  
} =]8f"wAh*  
fp`U?S6  
} c-? Ygr  
1x^W'n,HtK  
改进后的快速排序: 7 3H@kf  
dO Y lI`4  
package org.rut.util.algorithm.support; E!r4AjaC  
ddGkk@CA  
import org.rut.util.algorithm.SortUtil; O8!!UA8V  
8JQ<LrIt9  
/** }M;sz  
* @author treeroot X`8Y[Vb3}  
* @since 2006-2-2 pT|./ Fe  
* @version 1.0 H&"_}  
*/ (or =f`  
public class ImprovedQuickSort implements SortUtil.Sort { [YL sEo=  
(, ;MC/l  
private static int MAX_STACK_SIZE=4096; \"<GL;  
private static int THRESHOLD=10; yQ72v'  
/* (non-Javadoc) D'U\]'.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wWp?HDl"M  
*/ |DdW<IT`0  
public void sort(int[] data) { bcGn8  
int[] stack=new int[MAX_STACK_SIZE]; Y/QK+UMW*  
Br_3qJNVP  
int top=-1; 2b{@]Fp  
int pivot; q>Dr)x)  
int pivotIndex,l,r; TXY  
WV9[DFU  
stack[++top]=0; t!+%g) @  
stack[++top]=data.length-1; [ni-UNTv  
@ y&h4^)z  
while(top>0){ [346w <  
int j=stack[top--]; Th I  
int i=stack[top--]; $D0)j(v  
_R>s5|_  
pivotIndex=(i+j)/2; ?STI8AdO  
pivot=data[pivotIndex]; *,Aa9wa{  
fSgGQ D4  
SortUtil.swap(data,pivotIndex,j); d#M?lS>  
gu~-}  
file://partition /i7>&ND.r  
l=i-1; EX[l0]fj  
r=j; 2/a04qA#  
do{ 7~Xu71^3s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C5W-B8>  
SortUtil.swap(data,l,r); OV0cr  
} dNS9<8JX  
while(l SortUtil.swap(data,l,r); OP\^c  
SortUtil.swap(data,l,j); jb6ZAT<8  
j$JV(fz  
if((l-i)>THRESHOLD){ \Ho#[k=y*/  
stack[++top]=i; <3J=;.\6  
stack[++top]=l-1; AmrJ_YP/t~  
} 3oNt]2w/'  
if((j-l)>THRESHOLD){ bN<O<x1j  
stack[++top]=l+1; ,sy / r V  
stack[++top]=j; \f<thd*bC  
} *axza~d  
=#PudF.\  
} a*e|>pDO  
file://new InsertSort().sort(data);  t}* qs  
insertSort(data); QvyUd%e'5A  
} {BwN4r46  
/** :;#c:RKi:  
* @param data ' ]H#0.  
*/ +LU).  
private void insertSort(int[] data) { 1dXO3hot  
int temp;  T!O3(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cmC&s'/8`D  
} TO;]9`~;Mu  
} s^x , S  
} *jqPKK/  
jAK`96+D~b  
} \)s 3]/"7  
RM / s :  
归并排序: xf3/<x!B  
jDkc~Wwa  
package org.rut.util.algorithm.support; vzgudxG'z  
3k|~tVM  
import org.rut.util.algorithm.SortUtil; PhaQ3%  
LVz%$Cq,0  
/** }9fV[zO  
* @author treeroot !15@M|,OL  
* @since 2006-2-2 !IrKou)/_  
* @version 1.0 M4$4D?  
*/ Kk"B501  
public class MergeSort implements SortUtil.Sort{ iJ~iJ'vf  
|cBF-KNZ  
/* (non-Javadoc) ;/]c^y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u9[w~U#  
*/ pRyS8'  
public void sort(int[] data) { #v]aT  ]}  
int[] temp=new int[data.length]; Ts?>"@  
mergeSort(data,temp,0,data.length-1); 5w-G]b  
} I.n{ "=$B@  
S4AB tKG  
private void mergeSort(int[] data,int[] temp,int l,int r){ ZYp-dlEXq  
int mid=(l+r)/2; IBsO  
if(l==r) return ;   ]q\=  
mergeSort(data,temp,l,mid); '$&(+>)z `  
mergeSort(data,temp,mid+1,r); h;h,dx  
for(int i=l;i<=r;i++){ iH -x  
temp=data; P#'DGW&W0  
} x[,wJzp\6  
int i1=l; )SZ,J-H08w  
int i2=mid+1; 5=;I|l,  
for(int cur=l;cur<=r;cur++){ `J;/=tf09  
if(i1==mid+1) Zm'::+ tl  
data[cur]=temp[i2++]; wBaFC\CW  
else if(i2>r) 4~J1pcBno%  
data[cur]=temp[i1++]; 4pHPf<6  
else if(temp[i1] data[cur]=temp[i1++]; JT+lWhy  
else =u1w\>(2Y  
data[cur]=temp[i2++]; ,)\5O0 D6  
} 1x5CsmS  
} L.~]qs|G/K  
7D1`^,?  
} X0J]6|du.  
mJ#B<I'  
改进后的归并排序: n"VE!`B  
4)S?Y"Bs  
package org.rut.util.algorithm.support; x>/@Z6Wxz  
nJ`a1L{N  
import org.rut.util.algorithm.SortUtil; Yka yT0!  
< EE+ S#z  
/** 4%.2 =  
* @author treeroot lb XkZ,  
* @since 2006-2-2 Z.#glmw^=R  
* @version 1.0 G"R>aw  
*/ `x^,k% :4  
public class ImprovedMergeSort implements SortUtil.Sort { 6xQe!d3>s3  
fP4IOlHkE  
private static final int THRESHOLD = 10; a5g{.:NfO  
$@!&ML  
/* ?^A:~"~  
* (non-Javadoc) ,lGwW8$R  
* ?;kc%Rz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =kkA  
*/ 0BZOr-i  
public void sort(int[] data) { ~5?n&pF  
int[] temp=new int[data.length]; D&lXi~Z%.  
mergeSort(data,temp,0,data.length-1); -D':7!@  
} 9fLP&v  
BY2txLLB  
private void mergeSort(int[] data, int[] temp, int l, int r) { a[9OtZX<  
int i, j, k; uS10P7N}  
int mid = (l + r) / 2; 9>Z#o<*_/  
if (l == r) ])";Z  
return; K%#C+`Ij  
if ((mid - l) >= THRESHOLD) =-& iF  
mergeSort(data, temp, l, mid); &:{yf=  
else CAObC%  
insertSort(data, l, mid - l + 1); {Ao^3vB  
if ((r - mid) > THRESHOLD) "f$A0RL  
mergeSort(data, temp, mid + 1, r); OnPLz"-  
else ue2nfp  
insertSort(data, mid + 1, r - mid); u,k8i:JY  
2\W<EWJ@  
for (i = l; i <= mid; i++) { -5*;J&.  
temp = data; ^x#RUv  
} KTREOOu .t  
for (j = 1; j <= r - mid; j++) { N.cRZm%  
temp[r - j + 1] = data[j + mid]; WK5bt2x  
} EjCs  
int a = temp[l]; ~_\2\6%1^n  
int b = temp[r]; @Bwl)G!|  
for (i = l, j = r, k = l; k <= r; k++) { !a&F:Fbm  
if (a < b) { {.)~4.LhQM  
data[k] = temp[i++]; T1TZ+ \  
a = temp; .-*nD8b  
} else { G#M]\)f%  
data[k] = temp[j--]; VL1z$<vVXt  
b = temp[j]; g5'bUYsa  
} yc}t(*A5  
} AR2+W^aM3  
} ?Qp_4<(5  
im\Ws./  
/** s'w 0pZqj  
* @param data 7oSuLo=  
* @param l ?2/M W27w  
* @param i gVWLY;c 3}  
*/ QVhBHAw  
private void insertSort(int[] data, int start, int len) { c>k6i?u:X7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pAL-P l9z  
} `-\JjMSQ1  
} \Vq;j 1  
} `215Llzk;  
} he6) L6T  
Ct33S+y  
堆排序: j;vaNg|vQ  
+u.L6GcB  
package org.rut.util.algorithm.support; f%l#g]]  
: s3Vl  
import org.rut.util.algorithm.SortUtil; XV!EjD~q  
0`=?ig_  
/** $5 [RR  
* @author treeroot 6lFsN2  
* @since 2006-2-2 K6Ua~N^  
* @version 1.0 >,1LBM|0u  
*/ Y5 pNKL  
public class HeapSort implements SortUtil.Sort{ {1c eF  
(]dZ+"O{  
/* (non-Javadoc) <H#K`|Ag  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j3F=P  
*/ k}gs;|_  
public void sort(int[] data) { E':Z_ ^4  
MaxHeap h=new MaxHeap(); zK;t041e  
h.init(data); $*ZHk0 7x  
for(int i=0;i h.remove(); Re>e|$.T  
System.arraycopy(h.queue,1,data,0,data.length); }_TdXY #w\  
} 8h 2?Q  
[b'fz  
private static class MaxHeap{ ak&v/%N  
IA!Kp g W  
void init(int[] data){ 6Z=H>w  
this.queue=new int[data.length+1]; lvffQ_t  
for(int i=0;i queue[++size]=data; <GEn9;\  
fixUp(size); BW[K/l~"$:  
} K.Ir+SB  
} &Gl&m@-j  
_FgeE`X  
private int size=0; &GAx*.L  
aKZD4;  
private int[] queue; Aed"J5[a  
{F[Xe_=#"  
public int get() { %m`QnRX?D  
return queue[1]; ij^!TY[0  
} QkAwG[4  
64@s|m*  
public void remove() { r8$TT\?~  
SortUtil.swap(queue,1,size--); :gC2zv  
fixDown(1); 5#PhaVc  
} tp&iOP6O  
file://fixdown 4dAhJjhgD  
private void fixDown(int k) { }+1oD{  
int j; x.Y,]wis  
while ((j = k << 1) <= size) { NST6pu\,U  
if (j < size %26amp;%26amp; queue[j] j++; ~Otf "<  
if (queue[k]>queue[j]) file://不用交换 T~E83Jw  
break; sjGZ ,?%  
SortUtil.swap(queue,j,k); 7\ lb+^$  
k = j; cCs:z   
} 6h%(0=^  
} CTYkjeej  
private void fixUp(int k) { Wi<Fkzj  
while (k > 1) { NM]/OKs'H  
int j = k >> 1; @So"(^  
if (queue[j]>queue[k]) ~sD'pS  
break; /j As`"U  
SortUtil.swap(queue,j,k); T~Cd=s(T"  
k = j; 1<UQJw45  
} o6oYJ`PY  
} NGu]|p  
mLSAi2Y  
} +l\Dp  
T rW3@@}j  
} R >TtAm0N  
mUxD.;P  
SortUtil: HN+z7Q8hH  
U@WT;:.T  
package org.rut.util.algorithm; i^(<E0vS  
OJaU,vQ#  
import org.rut.util.algorithm.support.BubbleSort; (XQG"G%U6W  
import org.rut.util.algorithm.support.HeapSort; Qd&j~cG@  
import org.rut.util.algorithm.support.ImprovedMergeSort; so*7LM?ib>  
import org.rut.util.algorithm.support.ImprovedQuickSort; '(}BfDP  
import org.rut.util.algorithm.support.InsertSort; VTU-'q  
import org.rut.util.algorithm.support.MergeSort; Rx.0P6s  
import org.rut.util.algorithm.support.QuickSort; nYHk~<a  
import org.rut.util.algorithm.support.SelectionSort; =v8q  
import org.rut.util.algorithm.support.ShellSort; t!tBN  
;uy/Vc5,Y  
/** -|5&3HVz  
* @author treeroot <G={V fr  
* @since 2006-2-2  ar yr  
* @version 1.0 ak zb<aT  
*/ pFh2@O  
public class SortUtil { `/O_6PQ}  
public final static int INSERT = 1; =z+zg^wsT  
public final static int BUBBLE = 2; 'Tn$lh  
public final static int SELECTION = 3; be_t;p`3  
public final static int SHELL = 4; !VW#hc \A5  
public final static int QUICK = 5; ?`xId;}J#7  
public final static int IMPROVED_QUICK = 6; Ty m!7H2  
public final static int MERGE = 7; : SNp"|  
public final static int IMPROVED_MERGE = 8; w[iQndu  
public final static int HEAP = 9; WG,{:|!E  
IaB A2  
public static void sort(int[] data) { #X+)  
sort(data, IMPROVED_QUICK); 6m9Z5:xG  
} /D12N'VaE  
private static String[] name={ fg2}~ 02n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s$Mj4_p3l  
}; YAO0>T<F  
97lwPjq  
private static Sort[] impl=new Sort[]{ Kf*+Ilq%L  
new InsertSort(), <_5z^@N3$  
new BubbleSort(), ?AEpg.9R-  
new SelectionSort(), R[b?kT-%  
new ShellSort(), <m!\Ma  
new QuickSort(), @m6E*2Gg  
new ImprovedQuickSort(), _<8n]0lX3  
new MergeSort(), \*7Tj-#  
new ImprovedMergeSort(), `k+k&t  
new HeapSort() lH[N*9G(  
}; e>[QF+e)y  
QL3%L8  
public static String toString(int algorithm){ #/aWG  x_  
return name[algorithm-1]; ^J327  
} ^U52 *6  
F=cO=5Iz  
public static void sort(int[] data, int algorithm) { g#e"BBm=A  
impl[algorithm-1].sort(data); B}vI<?c  
} q8U]Hyp(`  
Gh j[nsoC~  
public static interface Sort { /2c?+04+  
public void sort(int[] data); ^;'3(m=  
} n`6vM4rM)  
_\[Zr.y  
public static void swap(int[] data, int i, int j) { 3Cpix,Dc  
int temp = data; /<@oUv  
data = data[j]; ?D#Vha  
data[j] = temp; G2mv6xK'  
} a 3H S!/  
} "|hmiMdGB  
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