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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。 Y@`uBB[  
插入排序: )-26(aNGT  
F?|Efpzow?  
package org.rut.util.algorithm.support; *m}8L%<HT  
H; NV?CD  
import org.rut.util.algorithm.SortUtil; FDQ=$w}' >  
/** U\p`YZ  
* @author treeroot a$ "nNmD?  
* @since 2006-2-2 0k5-S~_\  
* @version 1.0 @^<odmM  
*/ \y5lYb,*c_  
public class InsertSort implements SortUtil.Sort{ !1G KpL  
W!wof- 1  
/* (non-Javadoc) $G-<kC}8:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KGYbPty}  
*/ 4LKpEl.=  
public void sort(int[] data) { :Ln)j%&  
int temp; T@tsM|pI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (T_-`N|  
} hO]F\0+  
} 3uocAmY  
} z.Ic?Wz7  
lN#j%0MaUo  
} 1EXT^2!D  
>jX "  
冒泡排序: 68XJ`/d  
c|k_[8L  
package org.rut.util.algorithm.support; Cgx:6TRS  
k1<^Ept  
import org.rut.util.algorithm.SortUtil; `Pvi+:6\Y  
|Dn Zk3M,  
/** ZC N}iQu4  
* @author treeroot ]~aj  
* @since 2006-2-2 1ysfpX{=  
* @version 1.0 5c` ;~  
*/ AH#mL  
public class BubbleSort implements SortUtil.Sort{ -N*[f9EJB  
$6a9<&LP_  
/* (non-Javadoc) Gr\ ]6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y"H`+UV  
*/ 1z PS#K/3  
public void sort(int[] data) { 8>9Mh!t}(I  
int temp; w.q`E@ T*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ hzsQK _;S  
if(data[j] SortUtil.swap(data,j,j-1); 2y - QH  
} &VGV0K3 Dp  
} uu.X>agg  
} bzFac5n)Q  
} _y~6b{T  
L5bq\  
} eUcb e33  
h mRmU{(Y  
选择排序: pi?/]}:  
p^pd7)sBr  
package org.rut.util.algorithm.support; ga;nM#/  
Uj7YTB  
import org.rut.util.algorithm.SortUtil; k|/VNV( =0  
/oT~CB..  
/** E7L>5z  
* @author treeroot \>6*U r  
* @since 2006-2-2 p AOKy  
* @version 1.0 YB"gLv?  
*/ TcaW'&(K  
public class SelectionSort implements SortUtil.Sort { 6Qkjr</  
,`bW (V  
/* pG#tMec  
* (non-Javadoc) _ LHbP=B  
* ku5|cF*%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~6f/jCluR%  
*/ G'\[dwD,u  
public void sort(int[] data) { 1m~|e.g_'`  
int temp; Mt4  
for (int i = 0; i < data.length; i++) { 3Y)&[aj  
int lowIndex = i; }_nBegv  
for (int j = data.length - 1; j > i; j--) { mD9Iao%4~  
if (data[j] < data[lowIndex]) { |Q /LC0?  
lowIndex = j; .b,\.0N  
} JKZVd`fF  
} $VmV>NZ  
SortUtil.swap(data,i,lowIndex); e3ZRL91c  
} F_qApyU,7  
} 3N_KNW  
';3>rv_  
} M2Nh3ijr  
f SkC>mWv  
Shell排序: PEI$1,z  
{N2GRF~c-y  
package org.rut.util.algorithm.support; @@D/&}#F  
*|y'%y  
import org.rut.util.algorithm.SortUtil; ww{k_'RRJ  
FEk9a^Xyx  
/** Xex7Lr&  
* @author treeroot ^aB;Oo  
* @since 2006-2-2 g$uiwqNA%  
* @version 1.0 wO,qFY  
*/ +ywz@0nx  
public class ShellSort implements SortUtil.Sort{ mfj{_fR3  
%$&eC  
/* (non-Javadoc) ?ES{t4"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >V^8<^?G  
*/ >Lcu  
public void sort(int[] data) { ? X8`+`nh  
for(int i=data.length/2;i>2;i/=2){ a?y ucA  
for(int j=0;j insertSort(data,j,i); x<l 5wh  
} WfO EI1  
} `:iMGq ZN  
insertSort(data,0,1); (csk   
} sccLP_#Z  
gveGBi  
/** |B (,53  
* @param data 791v>h    
* @param j Q,.dIPla  
* @param i @wXYza0|d  
*/ =#2%[kGq  
private void insertSort(int[] data, int start, int inc) { NN7KwVg  
int temp; - k0a((?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~~{lIO)&  
} |KJGM1]G  
} ()|e xWW  
} aUMiRm-   
570ja7C:  
} 1Lf -  
iX?j"=!  
快速排序: .Yk}iHcW.  
4M"'B A<  
package org.rut.util.algorithm.support; Ue9d0#9  
SVa^:\"$[  
import org.rut.util.algorithm.SortUtil; glch06  
bD v& ;Z  
/** Ge)G.>c  
* @author treeroot (1=@.srAzK  
* @since 2006-2-2 |Gq3pL<jkC  
* @version 1.0 {%wrx'<  
*/ #`@)lU+/  
public class QuickSort implements SortUtil.Sort{ 0Y0z7A:  
@u+LF]MY  
/* (non-Javadoc) m<n+1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s3Bo'hGxG  
*/ `V/kM0A5  
public void sort(int[] data) { x<t ?Yc9  
quickSort(data,0,data.length-1); 7 :\J2$P  
} pp|$y\ZzB  
private void quickSort(int[] data,int i,int j){ 6U).vg<  
int pivotIndex=(i+j)/2; T7qp ({v?Q  
file://swap &kf \[|y  
SortUtil.swap(data,pivotIndex,j); R Q 8"vF#  
x6aVNH=  
int k=partition(data,i-1,j,data[j]); :2 \NG}  
SortUtil.swap(data,k,j); G$)q% b;Lz  
if((k-i)>1) quickSort(data,i,k-1); HE*^!2f  
if((j-k)>1) quickSort(data,k+1,j); bv7)[,i  
V~Guw[RA  
} g1XpERsSEV  
/** JSFNn]z2P  
* @param data *[>{ 9V  
* @param i ~&,S xQT  
* @param j sfVzVS[  
* @return `_&vvJPn@!  
*/ 1&h\\&ic  
private int partition(int[] data, int l, int r,int pivot) { nVpDjUpN  
do{ wI7.M Gt  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )[99SM   
SortUtil.swap(data,l,r); Z2;~{$&M+  
} FS7D  
while(l SortUtil.swap(data,l,r); ZHRMW'Ne  
return l; 3Q&@l49q  
} Bz{"K  
/?>W\bP<  
} An]Vx<PD  
-Nr*na^H9#  
改进后的快速排序:  <}^p5|  
)1R[~]y  
package org.rut.util.algorithm.support; D!,'}G #  
5-4  
import org.rut.util.algorithm.SortUtil; v%#@.D!)  
)"Ujx`]4r  
/** f !7fz~&Sh  
* @author treeroot ,jnaa(n  
* @since 2006-2-2 V%*91t_  
* @version 1.0 r{* Qsaw  
*/ bz1`f>%l  
public class ImprovedQuickSort implements SortUtil.Sort { 'Q* .[aJt  
lNe5{'OrO  
private static int MAX_STACK_SIZE=4096; "Z';nmv'N  
private static int THRESHOLD=10; f. h3:_r  
/* (non-Javadoc) IM,d6lN6s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >z3l@  
*/ nr>Yj?la  
public void sort(int[] data) { AO-~dV  
int[] stack=new int[MAX_STACK_SIZE]; \"I418T K  
'0Q/oU  
int top=-1; sC f)#6mI  
int pivot; ow+_g R-  
int pivotIndex,l,r; &G-dxET]  
$;";i:H`  
stack[++top]=0; >y!R}`&0^t  
stack[++top]=data.length-1; 'K23oQwDB  
k/U rz*O  
while(top>0){ xxgdp. (  
int j=stack[top--]; N5MWMN[6aP  
int i=stack[top--]; 5rtE/ {A  
PTQN.[bBh  
pivotIndex=(i+j)/2; \+ Ese-la  
pivot=data[pivotIndex]; |]HA@7B  
+Lr`-</VF  
SortUtil.swap(data,pivotIndex,j); Eg4&D4TG p  
nh+h3"-d  
file://partition Ix@nRc'  
l=i-1; Dz$dJF1 8  
r=j; "-HWw?rx/  
do{ jlyuu  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4y)6!p  
SortUtil.swap(data,l,r); 1Fsa}UK  
} H.Z<T{y;  
while(l SortUtil.swap(data,l,r);  l:a#B  
SortUtil.swap(data,l,j); !h^_2IX  
bvl!^xO]  
if((l-i)>THRESHOLD){ )|]*"yf:E  
stack[++top]=i; f]Zj"Tt-  
stack[++top]=l-1; %xX b5aY  
} *aYuuRx  
if((j-l)>THRESHOLD){ 6 ZXRb  
stack[++top]=l+1; #/t+h#jG  
stack[++top]=j; {XXnMO4uR;  
} bdBLfWe  
;e2D}  
} I,/E.cRV<  
file://new InsertSort().sort(data); y :QnK0  
insertSort(data); LCSJIt  
} uesIkJ^Q[  
/** R2Q1Rk#  
* @param data =QwT)KRB%  
*/ dA#'HMh@  
private void insertSort(int[] data) { Rx@0EPV  
int temp; FZ FPzH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7 $dibTER  
} qnU`Q{  
} !Ks<%; rb  
} 2p*!up(  
ACEVd! q  
} b6""q9S!  
tt&{f <*  
归并排序: <`BDN  
]~pM;6Pu0  
package org.rut.util.algorithm.support; 5IRUG)Icr  
/W{^hVkvC  
import org.rut.util.algorithm.SortUtil; w,1*dn  
94lz?-j  
/** ~'Korxa  
* @author treeroot US<l4  
* @since 2006-2-2 r+a0.  
* @version 1.0 AgOti]`aR  
*/ C)cuy7<  
public class MergeSort implements SortUtil.Sort{ %YG[?"P'  
_]< Tv3]RK  
/* (non-Javadoc) 1,n\Osd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] `;Fc8$  
*/ +^$E)Ol  
public void sort(int[] data) { S<I9`k G  
int[] temp=new int[data.length]; z|<?=c2P  
mergeSort(data,temp,0,data.length-1); ^_=bssaOd  
} b:x~Jz#%2  
=|V#~p*  
private void mergeSort(int[] data,int[] temp,int l,int r){ Om8Sgy?  
int mid=(l+r)/2; 3[R[ `l]v?  
if(l==r) return ; Ibv`/8xh  
mergeSort(data,temp,l,mid); p3IhK>  
mergeSort(data,temp,mid+1,r); )|&FBz;  
for(int i=l;i<=r;i++){ ;YrmT9Jx6  
temp=data; fKkS_c 2  
} 9$ixjkIg  
int i1=l; c`UizZ  
int i2=mid+1; =_$Hn>vO  
for(int cur=l;cur<=r;cur++){ 4SIS #m  
if(i1==mid+1) ^aqBL  
data[cur]=temp[i2++]; O}z-g&e.U  
else if(i2>r) AZ. j>+0xx  
data[cur]=temp[i1++]; F{eI[A  
else if(temp[i1] data[cur]=temp[i1++]; VP }To  
else A ? [Wfq|  
data[cur]=temp[i2++]; C)&BtiUN/  
} fHgvh&FU  
} CeUC[cUQU  
!dwa. lZ&X  
} WFfn:WSWU  
:!wt/Y  
改进后的归并排序: l(Uwci  
r rs0|=  
package org.rut.util.algorithm.support; pvdCiYo1r  
50Ov>(f@7  
import org.rut.util.algorithm.SortUtil; /!pJ"@  
\[]4rXZN0  
/** CH0Nkf  
* @author treeroot j HEt   
* @since 2006-2-2 m :2A[H+  
* @version 1.0 q]Af I(  
*/ D1wONss  
public class ImprovedMergeSort implements SortUtil.Sort { {Ok]$0L  
-=2V4WU~  
private static final int THRESHOLD = 10; $g }aH(vf  
V17!~  
/* Eu[/* t+l  
* (non-Javadoc) 4 udW 6U  
*  qy/t<2'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wfsd$kN6{  
*/ be HEAQ  
public void sort(int[] data) { d_Z?i#r0l  
int[] temp=new int[data.length]; rs0Wy  
mergeSort(data,temp,0,data.length-1); lB   
} ,-SWrp`f  
a-NicjV#  
private void mergeSort(int[] data, int[] temp, int l, int r) { V=H:`n3k  
int i, j, k; Bm +Ca:p%  
int mid = (l + r) / 2; +?6@%mW'  
if (l == r) Bk/&H-NI  
return; Fzy5k?R  
if ((mid - l) >= THRESHOLD) q!YAA\'31  
mergeSort(data, temp, l, mid); Fm[3Btn  
else ]3L/8]:  
insertSort(data, l, mid - l + 1); M AL;XcRR  
if ((r - mid) > THRESHOLD) `ix&j8E22w  
mergeSort(data, temp, mid + 1, r); n]jw!;  
else z2 mjm  
insertSort(data, mid + 1, r - mid); `r&]Ydu:  
vywpX^KPv  
for (i = l; i <= mid; i++) { 9<5S!?JL  
temp = data; pL2{zW`FDh  
} nPUD6<bF  
for (j = 1; j <= r - mid; j++) { #cqI0ny?G  
temp[r - j + 1] = data[j + mid]; I M G^L  
} NJg )S2]7  
int a = temp[l]; 4-oaq'//BT  
int b = temp[r]; mTLJajE/  
for (i = l, j = r, k = l; k <= r; k++) { ]$I}r= Em  
if (a < b) { /z: mi  
data[k] = temp[i++]; =G`g-E2  
a = temp; 8"o@$;C  
} else { W@D./Th  
data[k] = temp[j--]; _P*QX  
b = temp[j]; wv ^n#  
} ~,.;2K73  
} #g<6ISuf  
} tN z(s)  
Sv!JA#Ag  
/** ==EB\>g|  
* @param data 4u#TKr.  
* @param l H^M>(kT#&  
* @param i @I#uv|=N  
*/ P+DIo7VTX  
private void insertSort(int[] data, int start, int len) { dj{~!}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0!M'z  
} >+):eB L  
} T@a|*.V  
} z#2n+hwE  
}  |^"0bu"  
S:1g(f*85  
堆排序: ,( NN)Oj  
h=B= J  
package org.rut.util.algorithm.support; >~_)2_j  
- B?c F9  
import org.rut.util.algorithm.SortUtil; aP#/%  
Q"H/RMo-  
/** I:("f+ H  
* @author treeroot z, n[}Q#u  
* @since 2006-2-2 hw=~ %f;  
* @version 1.0 tTWEhHQ`  
*/ 'UM *7  
public class HeapSort implements SortUtil.Sort{ d{Owz&PL  
A# Y:VavQ?  
/* (non-Javadoc) Os KtxtLO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [pInF Qh6  
*/ &0xM 2J  
public void sort(int[] data) { dg_w$#  
MaxHeap h=new MaxHeap(); 9*r^1PRc  
h.init(data); cZ#%tT#  
for(int i=0;i h.remove(); F6aC'<#/  
System.arraycopy(h.queue,1,data,0,data.length); KtGbpcS$f  
} !;0K=~(Y^  
l2I%$|)d  
private static class MaxHeap{ 1xInU_SPf  
#/{3qPN?@  
void init(int[] data){ BvUiH<-D  
this.queue=new int[data.length+1]; Y=5P=wE  
for(int i=0;i queue[++size]=data; 3 FV -&Y  
fixUp(size); F~eY'~&H}  
} -+0kay%  
} $m A2 AI  
RGrQ>'RL  
private int size=0; <>728;/C  
6&il>  
private int[] queue; na"!"C s3  
T"<)B^8f  
public int get() { 7Gy:T47T\@  
return queue[1]; 'u~0rMe4})  
} J_?v=dW`  
:Qh rh(i  
public void remove() { b'Km-'MtH  
SortUtil.swap(queue,1,size--); "p7nngn~  
fixDown(1); y G3aF(  
} B{*{9!(l9  
file://fixdown Gr#3GvL  
private void fixDown(int k) { u@CQ+pnf:(  
int j; gd*2*o$g(  
while ((j = k << 1) <= size) { :2K@{~8r  
if (j < size %26amp;%26amp; queue[j] j++; " m13HS  
if (queue[k]>queue[j]) file://不用交换 keFH CC  
break; 2t PfIg  
SortUtil.swap(queue,j,k); h9/fD5  
k = j; "%p7ft  
} T^(> 8/O  
} L#zD4L  
private void fixUp(int k) { P-3f51Q  
while (k > 1) { =1@LMIi5x  
int j = k >> 1; EC 1|$Co  
if (queue[j]>queue[k]) 6|~^P!&  
break; 9\c]I0)3p  
SortUtil.swap(queue,j,k); -Jw4z# /-  
k = j; ,[)l>!0\H  
} ~?FhQd\Q  
} gn&Zt}@[  
)BvMFwQG  
} Hf\sF(, (  
kguZAO6  
} +@~WKa  
aU^6FI  
SortUtil: |<5F08]v  
6uT*Fg-G  
package org.rut.util.algorithm; *mbzK*  
8QZI(Xe9r  
import org.rut.util.algorithm.support.BubbleSort; }YVF fi~  
import org.rut.util.algorithm.support.HeapSort; S0Q LM)  
import org.rut.util.algorithm.support.ImprovedMergeSort; ml<tH2Qx3C  
import org.rut.util.algorithm.support.ImprovedQuickSort; .Z  67  
import org.rut.util.algorithm.support.InsertSort; y^ |u'XK  
import org.rut.util.algorithm.support.MergeSort; ],k~t5+  
import org.rut.util.algorithm.support.QuickSort; 7eAV2.  
import org.rut.util.algorithm.support.SelectionSort; 9@yF7  
import org.rut.util.algorithm.support.ShellSort; sRA2O/yKCE  
U3Z=X TB  
/** t ^[fu,  
* @author treeroot m|F1_Ggz  
* @since 2006-2-2 ^6z"@+;*  
* @version 1.0 =$fz</S=J  
*/ KmTFJ,iM  
public class SortUtil {  ,w3-*z  
public final static int INSERT = 1; qz{9ND| )  
public final static int BUBBLE = 2; M/dgW` c  
public final static int SELECTION = 3; @uldD"MJ<]  
public final static int SHELL = 4; [ 'lu;1-,  
public final static int QUICK = 5; vg1J N"S[  
public final static int IMPROVED_QUICK = 6; r PK.Q)g  
public final static int MERGE = 7; !*Eu(abD  
public final static int IMPROVED_MERGE = 8; \yC/OLXq  
public final static int HEAP = 9; 7J!s"|VS  
W(R~K -  
public static void sort(int[] data) { &29jg_'W  
sort(data, IMPROVED_QUICK); | @$I<  
} ao"2kqa)r  
private static String[] name={ 6Eu(C]nC(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" PXkpttIE]M  
}; h]s~w  
PPr Pj^%z=  
private static Sort[] impl=new Sort[]{ UZ2_FP  
new InsertSort(), YLGE{bS  
new BubbleSort(), kuD$]A Q`&  
new SelectionSort(), ,1#? 0q  
new ShellSort(), LwK]fFtu  
new QuickSort(), @,TIw[p  
new ImprovedQuickSort(), jD6HCIjd'  
new MergeSort(), ]i$y;]f  
new ImprovedMergeSort(), :sJ7Wok6~  
new HeapSort() YE~IO5   
}; 2cH RiRT  
gTXpaB<  
public static String toString(int algorithm){ A5TSbW']+5  
return name[algorithm-1]; abQ.N  
} {tUe(  
t]@>kAA>2L  
public static void sort(int[] data, int algorithm) { j<*7p:L7_>  
impl[algorithm-1].sort(data); }7[]d7  
} dAx ? ,  
]690ey$E:j  
public static interface Sort { ( .cA'f?h  
public void sort(int[] data); r|u[36NmA  
} zR?R,k)m  
jRU: un4  
public static void swap(int[] data, int i, int j) { 6dR+qJa6i  
int temp = data; >5Yn`Fc5  
data = data[j]; $t):r@L  
data[j] = temp; Y~g{9 <!  
} XNWtX-[ ^@  
} eTvWkpK+  
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