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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。 KiN8N=z  
插入排序: ay}} v7)GM  
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package org.rut.util.algorithm.support; 9 06b=  
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import org.rut.util.algorithm.SortUtil; y; LL^:rq  
/** s+{)K  
* @author treeroot sTx23RJ9  
* @since 2006-2-2 K&2{k+ w  
* @version 1.0 4\qnCf3  
*/ pSM\(kVKa  
public class InsertSort implements SortUtil.Sort{ XJ &'4h  
[=dK%7v  
/* (non-Javadoc) WEgJ_dB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &jJj6 +P\  
*/ $j? zEz  
public void sort(int[] data) { ~gz_4gzb  
int temp; @VlDi1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (~ 6oA f  
} !g=2U`j^  
} "uR,WY  
} EqW/Wxv7b  
&z!yY^g  
} 49vKb(bz{  
AN-qcp6=o  
冒泡排序: Z_iVOctP  
QDO.&G2  
package org.rut.util.algorithm.support; C"`,?K(U  
bb@@QzR  
import org.rut.util.algorithm.SortUtil; t= =+SHGP  
`cee tr=  
/** D?yiK=:08`  
* @author treeroot Bf {h\>q  
* @since 2006-2-2 /DxaKZ ;b  
* @version 1.0 s,&tD WU  
*/ sFh mp  
public class BubbleSort implements SortUtil.Sort{ ~?l>QP|o  
v<+5B5"1  
/* (non-Javadoc) 8t4o}3>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Nx7jGd:i  
*/ Tf [o'=2  
public void sort(int[] data) { 0)=U:y.  
int temp; K"lZwU\:On  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5Q $6~\  
if(data[j] SortUtil.swap(data,j,j-1); PtR8m=O  
} !% 'dyj  
} vUtA@  
} lOk'stLNa&  
} X@:[.eI~  
E?,O>bCJ5  
} 6|h~pH  
46 p%y  
选择排序: &-l(nr]h]  
;3~+M:{2  
package org.rut.util.algorithm.support; re\pE2&B  
ZdcG6IG+  
import org.rut.util.algorithm.SortUtil; "n,? )  
y2nwDw(xF  
/** Pe-1o#7~W  
* @author treeroot >M~wFs$~  
* @since 2006-2-2 &w4~0J>v!  
* @version 1.0 }q-*Ls~  
*/ =8Bq2.nlR  
public class SelectionSort implements SortUtil.Sort { Sz z:$!t  
<$H-/~Y  
/* X,+M?  
* (non-Javadoc) HN7C+e4U~  
* X:3W9`s )*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2`:NS  
*/ -SF *DZ  
public void sort(int[] data) { ~57.0?IK  
int temp; l)1FCDV  
for (int i = 0; i < data.length; i++) { x^0MEsR  
int lowIndex = i; rV *`0hA1  
for (int j = data.length - 1; j > i; j--) { 9^D5Sl$g  
if (data[j] < data[lowIndex]) { Wzm!:U2R*  
lowIndex = j; ?+^vU5b1u  
} MlbQLtw  
} @fjVCc;  
SortUtil.swap(data,i,lowIndex); 'aLTiF+  
} @nPXu2c?u7  
} eaNMcC1  
d :(&q  
} g#??Mz   
I=vGS  
Shell排序: o8Q+hZB}A  
Zndv!z  
package org.rut.util.algorithm.support; g`NJ `  
Ms * `w5n  
import org.rut.util.algorithm.SortUtil; !:zWhu,  
i'6>_,\(  
/** GxFmw:  
* @author treeroot BAy]&q|.  
* @since 2006-2-2 wO>P< KBU  
* @version 1.0 d z-  
*/ RxeyMNd  
public class ShellSort implements SortUtil.Sort{ -c_}^j  
xzI?'?duC  
/* (non-Javadoc) klUW_d-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _T8o]  
*/ dE ,NG)MH  
public void sort(int[] data) { VZ o,AP~  
for(int i=data.length/2;i>2;i/=2){ U/p|X)  
for(int j=0;j insertSort(data,j,i); ke~S[bL%-  
} W.|r=   
} D(z}c,  
insertSort(data,0,1); 7ThGF  
} L5wrc4  
szZ8-Y  
/** PF6w'T 5  
* @param data 7BNu.5*y  
* @param j MPS{MGVjbJ  
* @param i 3 $~6+i  
*/ C VyYV &U,  
private void insertSort(int[] data, int start, int inc) { n91@{U)QJ3  
int temp; #z. QBG@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); krt8yAkG  
} y?r:`n  
} v c r5  
} /a'cP  
\os iY ^  
} 5:T)hoF@  
MhaoD5*9  
快速排序: c;M&;'#x  
Pl9Ky(Q`V  
package org.rut.util.algorithm.support; "3\C;B6I  
I"_``*/1  
import org.rut.util.algorithm.SortUtil; BS(XEmJn&j  
AhNy+p{  
/** C=y[WsT  
* @author treeroot X~#jx(0_  
* @since 2006-2-2 EId_1F;V^  
* @version 1.0 OS.oknzZZ  
*/ q%rfKHMA50  
public class QuickSort implements SortUtil.Sort{ XH"-sZt  
M8,_E\*  
/* (non-Javadoc) Q*GJREC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >^U$2P  
*/ DqQ+8 w  
public void sort(int[] data) { <}vult^  
quickSort(data,0,data.length-1); #("/ 1N6  
} @An "ClDa  
private void quickSort(int[] data,int i,int j){ O=A(x m#  
int pivotIndex=(i+j)/2; %XU V[L}  
file://swap b+6%Mu}o  
SortUtil.swap(data,pivotIndex,j); `H#G/zOr  
AVR=\ qR  
int k=partition(data,i-1,j,data[j]); FlqE!6[[  
SortUtil.swap(data,k,j); Y*KHr`\C4  
if((k-i)>1) quickSort(data,i,k-1); 3P&K<M#\  
if((j-k)>1) quickSort(data,k+1,j); 8'n xc#&  
Mu~DB:Y9e  
} u#>*"4Q  
/** 5Vj t!%?r  
* @param data jcY:a0[{D  
* @param i YtWO=+rX  
* @param j \i}:Vb(^  
* @return +hW^wqk/.  
*/ j/h>G,>T=  
private int partition(int[] data, int l, int r,int pivot) { z4UJo!{S  
do{ 'u)zQAaw.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kpQXnDm 2  
SortUtil.swap(data,l,r); 7^3a296  
} E7c!KJ2  
while(l SortUtil.swap(data,l,r); SFaG`T=  
return l; i_KAD U&mP  
} 4uSC>  
2rG;j52))a  
} dh; L!  
B0&W wa:  
改进后的快速排序: /Ayo78Pi  
13lJq:bM  
package org.rut.util.algorithm.support; )q>mt/,  
.]IidsgM  
import org.rut.util.algorithm.SortUtil; YR\pt8(z?  
$v#\bqY  
/** VEtdp*ot  
* @author treeroot MD 62ObK!  
* @since 2006-2-2 = ;!$Qw4  
* @version 1.0 u5LrZt]k  
*/ EU0b>2n4  
public class ImprovedQuickSort implements SortUtil.Sort { FkS$x'~2$  
QUSyVp{$  
private static int MAX_STACK_SIZE=4096; lCznH?[  
private static int THRESHOLD=10; ujt0?DM  
/* (non-Javadoc) }CoR$K   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .dM|J'`g  
*/ ^kElb;d  
public void sort(int[] data) { YgFmJ.1  
int[] stack=new int[MAX_STACK_SIZE]; \]a@ NBv  
bV~z}V&  
int top=-1; MeSF,*lP  
int pivot; %xH2jf  
int pivotIndex,l,r; x KZLXQ'e-  
gFx2\QV  
stack[++top]=0; ;YYo^9Lh}  
stack[++top]=data.length-1; '%} k"&t$i  
nJ]oApb/-  
while(top>0){ ( \ \BsK  
int j=stack[top--]; FU~xKNr  
int i=stack[top--]; &.ENcEic  
aSy^( WN8  
pivotIndex=(i+j)/2; .Zzx W  
pivot=data[pivotIndex]; K:osfd  
;]/emw=a  
SortUtil.swap(data,pivotIndex,j); |v[0(  
/&`sB|  
file://partition $XOs(>~"r  
l=i-1; y7?n;3U]CS  
r=j; ioZ{2kK  
do{ X,Q'Xe /  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x'c%w:  
SortUtil.swap(data,l,r); 8^8fUN4<=  
} 2(<2Gnpl  
while(l SortUtil.swap(data,l,r); !pwY@} oL  
SortUtil.swap(data,l,j); l[G&=/R@H  
h:J0d~u  
if((l-i)>THRESHOLD){ h yPVt6Gkj  
stack[++top]=i; t\/i9CBn  
stack[++top]=l-1; f2abee  
} i 1{Lx)  
if((j-l)>THRESHOLD){ =[7[F)I~O  
stack[++top]=l+1; DF>LN%a~  
stack[++top]=j; A5A4*.C  
} LrL ZlJf  
W'B=H1  
} g<@P_^vo  
file://new InsertSort().sort(data); ^5:xSQ@:  
insertSort(data); 2Gw2k8g&  
} @`,~d{ziF  
/** )U?O4| \P  
* @param data D (>,#F  
*/ m7|}PH" 7  
private void insertSort(int[] data) { |v'_Co0ki  
int temp; VN5UJ!$?J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p,)~w1|  
} D;@nrj`.  
} ^E)*i#."4  
} %+=y!  
D>U b)i  
} YEg(QOn3Q  
19r4J(pV  
归并排序: `~0^fSww  
3t*e|Ih&j5  
package org.rut.util.algorithm.support; 1hz:AUH  
H;eGBVi  
import org.rut.util.algorithm.SortUtil; ,k,RXgQ  
e?V7<7$  
/** TVVr<r  
* @author treeroot ^iHwv*ss  
* @since 2006-2-2 t,f)!D$  
* @version 1.0 'UW(0 PXw  
*/ q$<M2  
public class MergeSort implements SortUtil.Sort{ \$iU#Z  
_~{Nco7T  
/* (non-Javadoc) %YH+=b:uW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tJ_6dH8Y  
*/ <hS %I  
public void sort(int[] data) { +bGj(T%+'  
int[] temp=new int[data.length]; R?/!7  
mergeSort(data,temp,0,data.length-1); vZ rE9C }  
} X q"_^  
[b=l'e/  
private void mergeSort(int[] data,int[] temp,int l,int r){ c6;326aD q  
int mid=(l+r)/2; rmzM}T\20  
if(l==r) return ; Ub(8ko:8$  
mergeSort(data,temp,l,mid); nQ$4W  
mergeSort(data,temp,mid+1,r); m,u5S=3A{!  
for(int i=l;i<=r;i++){ ~)ecQ  
temp=data; t=K;/ 1  
} } ^}fx [  
int i1=l; m$bX;F}T  
int i2=mid+1; v}Gpw6   
for(int cur=l;cur<=r;cur++){ 1&Fty'p  
if(i1==mid+1) {1<XOp#b  
data[cur]=temp[i2++]; n0nvp@?7bJ  
else if(i2>r) @jKiE%OP  
data[cur]=temp[i1++]; J#```cB  
else if(temp[i1] data[cur]=temp[i1++]; 5)T=^"IHXi  
else |9 Gng`)  
data[cur]=temp[i2++]; &V$qIvN$  
} kvdiDo  
} o~_wx  
7eM:YqT/#  
} sy ]k  
o9j*Yz  
改进后的归并排序: [\Ks+S  
&yQilyU{V  
package org.rut.util.algorithm.support; o:p6[SGd  
{N \ri{|  
import org.rut.util.algorithm.SortUtil; J0 [^hH  
`YK2hr  
/** j/oM^IY  
* @author treeroot =u*\P!$  
* @since 2006-2-2 .[@TC@W  
* @version 1.0 }k`-n32)|  
*/ *tWZ.I<<  
public class ImprovedMergeSort implements SortUtil.Sort { ~_!lx  
|#&{`3$CG[  
private static final int THRESHOLD = 10; d~G, *  
D.Q9fa&P  
/* !vaS fL*]  
* (non-Javadoc) ]YO &_#  
* ]ZkR~?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <~%e{F:[#  
*/ ,C=Lu9  
public void sort(int[] data) { e(5 :XHe  
int[] temp=new int[data.length]; :jJ;&t^^  
mergeSort(data,temp,0,data.length-1); #[Z1W8e  
} k2"DFXsv  
CJDnHuozc  
private void mergeSort(int[] data, int[] temp, int l, int r) { i42M.M6D$  
int i, j, k; vxey $Ir  
int mid = (l + r) / 2; ^AI5SjOUx  
if (l == r) ZQ%4]=w  
return; oCCTRLb02  
if ((mid - l) >= THRESHOLD) #|ppW fZQ  
mergeSort(data, temp, l, mid); 5$<\  
else (O&R-5m  
insertSort(data, l, mid - l + 1); j,]KidDWm  
if ((r - mid) > THRESHOLD)  1\[En/6  
mergeSort(data, temp, mid + 1, r); K4r"Q*h  
else JGJy_.C  
insertSort(data, mid + 1, r - mid); ?4[IIX-  
k\ 2.\Lwb  
for (i = l; i <= mid; i++) { n^a&@?(+  
temp = data; c}QWa"\2n  
} lBYc(cr  
for (j = 1; j <= r - mid; j++) { feSj3,<!  
temp[r - j + 1] = data[j + mid]; \V1geSoE  
} 4 8}\  
int a = temp[l]; H*gX90{!2  
int b = temp[r]; Z4"SKsJT/>  
for (i = l, j = r, k = l; k <= r; k++) { 65P*Gu?  
if (a < b) { Ib~n}SA  
data[k] = temp[i++]; *VbB'u:  
a = temp; <hJ%]]  
} else { aX)k (*|  
data[k] = temp[j--]; aJ4y%Gy?  
b = temp[j]; SY[7<BUZ  
} ;$VQRXq  
} SZ;Is,VgU4  
} 0LjF$3GpZ  
T3JM8  
/** 3eg)O34  
* @param data b_'VWd:am  
* @param l [110[i^  
* @param i /OX;3" +1  
*/ G1X${x7  
private void insertSort(int[] data, int start, int len) { !"G|y4O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); VbwB<nQl  
} &&Uc%vIN  
} "f1`6cx6  
} [myIcLp^aP  
} >" z$p@7  
:vsF4  
堆排序: "8NhrUX  
~"Q24I  
package org.rut.util.algorithm.support; zL%ruWNG  
MYmH?A  
import org.rut.util.algorithm.SortUtil; (59u<F  
;b-d2R  
/** .8v[ss6:  
* @author treeroot iE}Lw&x  
* @since 2006-2-2 fH> I/%  
* @version 1.0 jNC@b>E?~  
*/ ~8j4IO(  
public class HeapSort implements SortUtil.Sort{ v J_1VW  
=B/Ac0Y  
/* (non-Javadoc) )R- e^Cb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) ]y^RrD  
*/ JM& :dzyIP  
public void sort(int[] data) { CY4ntd4M  
MaxHeap h=new MaxHeap(); $YPU(y  
h.init(data); HQ7  
for(int i=0;i h.remove(); wH<'*>/  
System.arraycopy(h.queue,1,data,0,data.length); 8iIz!l%O  
} -(Z%?]+  
3jJd)C R  
private static class MaxHeap{ ` 465 H  
2JMMNpya  
void init(int[] data){ /_?y]Ly[r  
this.queue=new int[data.length+1]; pSPVY2qKX  
for(int i=0;i queue[++size]=data; (H_YYZ3ZX  
fixUp(size); B=R9K3f  
} 0wA?.~ L  
} b.4H4LV  
{'^!S" 9x  
private int size=0; K,$Ro@!  
<* vWcCS1  
private int[] queue; 3[a&|!Yw  
HTa]T'  
public int get() { fl4z'8P"(  
return queue[1]; ij|+MX  
} ; *@lH%u  
NCKhrDd&  
public void remove() { V t[Kr  
SortUtil.swap(queue,1,size--); $lC*q  
fixDown(1); H;=JqD8`  
} p_Yx"nO7  
file://fixdown `nvm>u~[Hq  
private void fixDown(int k) { &y~~Z [.F,  
int j; &l<~Xd#  
while ((j = k << 1) <= size) { L+]|-L`S  
if (j < size %26amp;%26amp; queue[j] j++; 9P)28\4  
if (queue[k]>queue[j]) file://不用交换 W,53|9b@  
break; Wb;x eG  
SortUtil.swap(queue,j,k); < 9 vS  
k = j; <jk.9$\$A  
} 6%^9`|3  
} 50?5xSEM0_  
private void fixUp(int k) { Pi!3wy  
while (k > 1) { DEFh&n  
int j = k >> 1; /+p]VHP\  
if (queue[j]>queue[k]) m|%L[h1  
break; kvoEnwBe_  
SortUtil.swap(queue,j,k); T l%n|pc  
k = j; FZi'#(y  
} UEb'b,O_9  
} |nu)=Ag  
;Q}pmBkqB  
} #n5D K{e  
-IP3I  
} H+O^el  
GQvJj4LJp  
SortUtil: Wb7z&vj  
\qA^3L~;5  
package org.rut.util.algorithm; G#f(oGn :  
vrr` ^UB2  
import org.rut.util.algorithm.support.BubbleSort; l(fStpP  
import org.rut.util.algorithm.support.HeapSort; ;V:Cf/@@R  
import org.rut.util.algorithm.support.ImprovedMergeSort; N =0R6{'  
import org.rut.util.algorithm.support.ImprovedQuickSort; q_gsYb  
import org.rut.util.algorithm.support.InsertSort; L>PPAI  
import org.rut.util.algorithm.support.MergeSort; 1^HUu"Kt  
import org.rut.util.algorithm.support.QuickSort; Zi4Ektj2  
import org.rut.util.algorithm.support.SelectionSort; wfJ[" q   
import org.rut.util.algorithm.support.ShellSort; z"*$ .  
WokQ X"  
/** QN'v]z  
* @author treeroot ZBf9Upg  
* @since 2006-2-2 *9?T?S|^$F  
* @version 1.0 (F.vVldBy  
*/ ja Ot"iU.B  
public class SortUtil { $(PWN6{\r^  
public final static int INSERT = 1; zB@@Gs>  
public final static int BUBBLE = 2; OpT0V]k^"9  
public final static int SELECTION = 3; j\^ u_D  
public final static int SHELL = 4; 1(ud(8?|  
public final static int QUICK = 5; OBBEsD/bc  
public final static int IMPROVED_QUICK = 6; {R{Io|   
public final static int MERGE = 7; ^;xO-;q  
public final static int IMPROVED_MERGE = 8; (4 6S^*  
public final static int HEAP = 9; |-'.\)7:  
h5>38Kd  
public static void sort(int[] data) { {z j<nu  
sort(data, IMPROVED_QUICK); /EXub U73  
} L3 VyW8Y  
private static String[] name={ HHMv%H]M  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YYiT,Xp<A  
}; P:3%#d~q  
`tjH#W`  
private static Sort[] impl=new Sort[]{ xSal=a;k  
new InsertSort(), :87HXz6]jS  
new BubbleSort(), ,2y " \_  
new SelectionSort(), UB7H`)C}  
new ShellSort(), "v9i;Ba>+  
new QuickSort(), YJ[Jo3M@j0  
new ImprovedQuickSort(), c~=yD:$  
new MergeSort(), 0s%rd>3  
new ImprovedMergeSort(), }F;Nh7?  
new HeapSort() KDmzKOl  
}; K7 N)VG  
i)[8dv  
public static String toString(int algorithm){ G._E9  
return name[algorithm-1]; oP0ZJK&;  
} -?K?P=B;X  
?{bAyh/  
public static void sort(int[] data, int algorithm) { *wY { ~zh  
impl[algorithm-1].sort(data); nOE 1bf^l  
} kpU-//lk+  
:+nECk   
public static interface Sort { z/IZ ;K_e  
public void sort(int[] data); "VfV;)]|w  
} mEM/}]2  
V(LE4P 1  
public static void swap(int[] data, int i, int j) { /cN. -lEo%  
int temp = data; k.d Q;v}  
data = data[j]; Ue8k9%qV  
data[j] = temp; A` iZ"?  
} 0k7kmDW  
} ~=pAy>oV  
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