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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。 Ab2Q \+,  
插入排序: uR$i48}  
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package org.rut.util.algorithm.support; :5b0np!  
]A^4}CK^<  
import org.rut.util.algorithm.SortUtil; j/KO|iNL2  
/** 6@V~0DG  
* @author treeroot [ c~kF+8  
* @since 2006-2-2  U>a\j2I  
* @version 1.0 3TS_-l  
*/ 36vgX=}  
public class InsertSort implements SortUtil.Sort{ UE.4q Y_7  
]JXKZV8$0  
/* (non-Javadoc) #+k*1 Jg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QI_4*  
*/ Z"y=sDO{  
public void sort(int[] data) { ?6"{!s{v  
int temp; t~hTp K*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k XrlSaIc  
} Lja7   
} [0y$! f4  
} E\U`2{^.  
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} ,|h)bg7.  
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冒泡排序: U*)m' ,  
oD.r `]k  
package org.rut.util.algorithm.support; `$TRleSi  
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import org.rut.util.algorithm.SortUtil; -7{ $ Vj  
Ub amB+QT  
/** u0Nm.--;_3  
* @author treeroot Wl- <HR!n  
* @since 2006-2-2 !EIjN  
* @version 1.0 1P(&J  
*/ U;q];e:,=}  
public class BubbleSort implements SortUtil.Sort{ ~xLJe`"JUx  
%$5H!!~o  
/* (non-Javadoc) r] Lc9dL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Z'w)!h  
*/ sN6N >{  
public void sort(int[] data) { {{yZ@>o6  
int temp; eq4C+&O&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Wwujh2g"0|  
if(data[j] SortUtil.swap(data,j,j-1); >znRyQ~bM  
} -E4XIn  
} Sa1 l=^  
} iyta;dw9  
} >>{FzR  
%9oYw9 H!  
} O1'm@ q)  
2lVHZ\G  
选择排序: "Wo,'8{v  
JW.=T)  
package org.rut.util.algorithm.support; 9f+>ix,ek*  
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import org.rut.util.algorithm.SortUtil; \ZU1J b1c  
umi5Wb<  
/** s?R2B)a  
* @author treeroot u8GMUN  
* @since 2006-2-2 kOo~%kcQ'  
* @version 1.0 `;l.MZL!  
*/ .iX# A<E}  
public class SelectionSort implements SortUtil.Sort { ?>"Yr,b?  
#~O b)q|  
/* 0tg8~H3yy  
* (non-Javadoc) kn"(mJe$  
* xg_D f,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6 GP p>X  
*/  Q6'x\  
public void sort(int[] data) { rgmF:C  
int temp; c(;a=n(E#  
for (int i = 0; i < data.length; i++) { 3jB$2:#  
int lowIndex = i; v[e:qi&fG  
for (int j = data.length - 1; j > i; j--) { Z_1U9 +,  
if (data[j] < data[lowIndex]) { 3"n\8#X{  
lowIndex = j; ,L bBpi=TJ  
} +l3=3  
} 0sca4G0{  
SortUtil.swap(data,i,lowIndex); Bw%Qbs0Q  
} +5VLw  
} QTX8 L  
w@JKl5  
} 8{`?= &%6  
1$qh`<\  
Shell排序: ,1OyN]f3  
c:Wze*vI ;  
package org.rut.util.algorithm.support; om?-WJI  
|sRipWh  
import org.rut.util.algorithm.SortUtil; Mi'8 ~J  
26T"XW'_  
/** ] e. JNo  
* @author treeroot ^uv<6  
* @since 2006-2-2 mKo C.J  
* @version 1.0 [ i#zP  
*/ >SPh2[f  
public class ShellSort implements SortUtil.Sort{ oF(Lji?m  
;qHOOT  
/* (non-Javadoc) `W/sP\3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Zrlp.M4  
*/ =] *.ZH#h  
public void sort(int[] data) { mU}F!J#6  
for(int i=data.length/2;i>2;i/=2){ pvmC$n^zc  
for(int j=0;j insertSort(data,j,i); F1L:,.e`  
} a:QDBS2Llv  
} Uf}\p~;  
insertSort(data,0,1); C4TE-OM8  
} s(X;Eha  
P(F+f `T  
/** |$5[(6T|  
* @param data #9K-7je;j  
* @param j ME'|saP  
* @param i _6 ay-u  
*/ RV@*c4KvO+  
private void insertSort(int[] data, int start, int inc) { lz1 wO5%h  
int temp; M1KqY:9E  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -D6exTxh"  
} vWGwVH/K  
} r@ZJ{4\Q  
} u\eEh*<7q  
e=O,B8)_  
} */|BpakD<  
yj^+ G  
快速排序: $56,$K`H  
xyI}y(CN1  
package org.rut.util.algorithm.support; /7gOSwY  
q$=#A7H>3)  
import org.rut.util.algorithm.SortUtil; ?lP':'P  
E*+{t~  
/** XQw>EZdj_N  
* @author treeroot L|p Z$HB  
* @since 2006-2-2 Ol!ntNhXm  
* @version 1.0 _%QhOY5tv"  
*/ nqLA}u4IM  
public class QuickSort implements SortUtil.Sort{ }iuWAFZbGS  
j_Yp>=+[  
/* (non-Javadoc) I_RsYw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qgfi\/$6  
*/ o"*AtGR+"  
public void sort(int[] data) { 812$`5l  
quickSort(data,0,data.length-1); ~?(N  
} D-c`FG'  
private void quickSort(int[] data,int i,int j){ ~ 0M'7q'  
int pivotIndex=(i+j)/2; P-9<YN  
file://swap %$b:X5$Z  
SortUtil.swap(data,pivotIndex,j); z*-2.}&U<  
A{A\RSZ0  
int k=partition(data,i-1,j,data[j]); ?!+MM&c-n  
SortUtil.swap(data,k,j); P'_H/r/#  
if((k-i)>1) quickSort(data,i,k-1); 0\eIQp  
if((j-k)>1) quickSort(data,k+1,j); wp&=$Aa)'  
I1X-s  
} EKO[!,  
/** AB4(+S*LA  
* @param data :8OZ#D_Hl  
* @param i M]J ^N#  
* @param j O&Y*pOg  
* @return Ftr5k^!  
*/ ')$+G152  
private int partition(int[] data, int l, int r,int pivot) { 4q k9NK2 U  
do{ 9g mW&{6q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !_Wi!Vr_  
SortUtil.swap(data,l,r); 6ZP"p<xX  
} \ZkA>oO".  
while(l SortUtil.swap(data,l,r); ;XBI{CW  
return l; p9x(D/YP0  
} 1]p ZrBh"E  
:>C2gS@  
} 0.@&_XTPl  
NGbG4-w-  
改进后的快速排序: H5Io{B%=  
e7sp =I ,  
package org.rut.util.algorithm.support; <P=twT;P  
qHrc9fB  
import org.rut.util.algorithm.SortUtil; ;'cN<x)% |  
VcXq?f>\  
/** Jt}Bpg!J  
* @author treeroot 32`{7a3!=  
* @since 2006-2-2 V)[@98T_4?  
* @version 1.0 j3{D^|0bP  
*/ yjF1}SQ  
public class ImprovedQuickSort implements SortUtil.Sort { 7Mg=b%IYs  
$adbCY \  
private static int MAX_STACK_SIZE=4096; 6V7B;tB  
private static int THRESHOLD=10; )!P)U(*v  
/* (non-Javadoc) : qd`zG3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JPoN&BTCj  
*/ 5?]hd*8   
public void sort(int[] data) { T9Nb`sbV]  
int[] stack=new int[MAX_STACK_SIZE]; _I:/ZF5  
A\HxDIU  
int top=-1; `ojoOB^L  
int pivot; mj W8 Q\D  
int pivotIndex,l,r; aWR}R>E  
YTUZoW2  
stack[++top]=0; H}hiT/+$  
stack[++top]=data.length-1; =4FXBPoQK  
;wz^gdh;  
while(top>0){ Utnr5^].2O  
int j=stack[top--]; ww], y@da  
int i=stack[top--]; JzQ)jdvp  
+%ee8|\  
pivotIndex=(i+j)/2; @`q:IIgW  
pivot=data[pivotIndex]; h4 T5+~rw  
Bu#VMk chJ  
SortUtil.swap(data,pivotIndex,j); wAf\|{Vn  
YQj2  
file://partition @$[?z9ck"  
l=i-1; Brf5dT49  
r=j; PoG-Rqe  
do{ 6WXRP;!Q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CxwoBuG=?  
SortUtil.swap(data,l,r); H9YW  
} Y^$X*U/q%U  
while(l SortUtil.swap(data,l,r); Y 0d<~*  
SortUtil.swap(data,l,j); t gI{`jS%  
~?d Nd  
if((l-i)>THRESHOLD){ #h` V>;  
stack[++top]=i; wl#@lOv-P  
stack[++top]=l-1; 0jy2H2  
} >0ow7Uw;  
if((j-l)>THRESHOLD){ VY |_d k  
stack[++top]=l+1; t*Sa@$p  
stack[++top]=j; I ?gSG*m  
} 1g8_Xe4  
nn@-W]  
} "_-Po^u=r  
file://new InsertSort().sort(data); L^@'q6*}  
insertSort(data); oX30VfT  
} J}v}~Cv  
/** \LR~r%(rM  
* @param data 4T|b Cs?e  
*/ kmP]SO?tx  
private void insertSort(int[] data) { `6~Aoe  
int temp; "s0)rqf<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2$+bJJM  
} WW4vn|0v  
} +ElfZ4  
} hT`J1nNt  
K|zZS%?$  
} 6jE |  
47+&L   
归并排序: JtYP E?  
9g'LkP  
package org.rut.util.algorithm.support; ?XrQ53  
;oW6 NJ  
import org.rut.util.algorithm.SortUtil; {< )1q ;  
>3_jWFq  
/** "p_J8  
* @author treeroot $rv8K j+  
* @since 2006-2-2 \^L`7cBL  
* @version 1.0 8 OY3A  
*/ ]zE;Tw.S  
public class MergeSort implements SortUtil.Sort{ [^Os kJ4  
b=yx7v"r  
/* (non-Javadoc) l{I6&^!KS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ($au:'kU  
*/ x$5) ^ud?  
public void sort(int[] data) { Rdvk ml@@  
int[] temp=new int[data.length]; vQosPS_2L  
mergeSort(data,temp,0,data.length-1); \?[v{WP)  
} LClNxm2X  
cv998*|X:  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ktb\ bw  
int mid=(l+r)/2; >`Y.+4 mE  
if(l==r) return ; ^Cu\VV  
mergeSort(data,temp,l,mid); Aw$x;3y  
mergeSort(data,temp,mid+1,r); zi|+HM  
for(int i=l;i<=r;i++){ F U_jGwD  
temp=data; `q}I"iS  
} [#-b8Cu  
int i1=l; @L<*9sLWh  
int i2=mid+1; 7Ri46Tkt  
for(int cur=l;cur<=r;cur++){ Xe6w|  
if(i1==mid+1) ~ {E'@MU  
data[cur]=temp[i2++]; wvO|UP H\  
else if(i2>r) ML w7}[  
data[cur]=temp[i1++]; 0 HGM4[)=  
else if(temp[i1] data[cur]=temp[i1++]; R.jIl@p   
else sF!($k;!  
data[cur]=temp[i2++]; fd +hA  
} UK595n;P  
} _ "?.!  
%<k2#6K  
} Gw>^[dmt!  
FQu8 vwV6>  
改进后的归并排序: )Xk0VDNp$/  
7C,&*Ax,9  
package org.rut.util.algorithm.support; O@u?h9?cf>  
]op}y0  
import org.rut.util.algorithm.SortUtil; 7mI:| G  
t[ubn+  
/** QS%%^+E2  
* @author treeroot nygbt<;?  
* @since 2006-2-2 K&vF0*gN3  
* @version 1.0 R<\F:9  
*/ RN$1bxY  
public class ImprovedMergeSort implements SortUtil.Sort { /1"(cQ%?  
{G U&a  
private static final int THRESHOLD = 10; |jI#"LbF  
3LAIl913  
/* o< |cA5f\  
* (non-Javadoc) I8wXuIN_  
* {@eJtF+2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1C< uz29  
*/ u[@l~gwL  
public void sort(int[] data) { Eo{"9j\  
int[] temp=new int[data.length]; 3.|S  
mergeSort(data,temp,0,data.length-1); F~T]u2qt  
} }Mstjm  
|v \_@09=  
private void mergeSort(int[] data, int[] temp, int l, int r) { AJh w  
int i, j, k; 1n=lqn/  
int mid = (l + r) / 2; &~8oQC-eF  
if (l == r) N >FKy'.gk  
return; !TAlB kj  
if ((mid - l) >= THRESHOLD) 'Q|M'5'  
mergeSort(data, temp, l, mid); =d".|k  
else 0"kbrv2y  
insertSort(data, l, mid - l + 1); XRcqhv  
if ((r - mid) > THRESHOLD) {_7 i8c<s=  
mergeSort(data, temp, mid + 1, r); gRCdY8GH  
else 6g|*`x{  
insertSort(data, mid + 1, r - mid); d ^^bke$~  
GGNvu )"  
for (i = l; i <= mid; i++) { BzkooJ  
temp = data;  3L< wQ(  
} DnC{YK  
for (j = 1; j <= r - mid; j++) { E)TN,@%  
temp[r - j + 1] = data[j + mid]; 6VS4y-N  
} wP6 Fl L  
int a = temp[l]; QN #U)wn:  
int b = temp[r]; J3e96t~u  
for (i = l, j = r, k = l; k <= r; k++) { N*"p|yhd]  
if (a < b) { s %qF/70'  
data[k] = temp[i++]; tX5"UQA  
a = temp; S]bmS6#  
} else { -K q5i  
data[k] = temp[j--]; \#f <!R4  
b = temp[j]; UYk/v]ZA  
} K?[q% W]%  
} xDG2ws=@D  
} + fC=UAZ  
igIRSN}h  
/** 3Ndq>  
* @param data 5>CEl2mSl  
* @param l zDw5]*R  
* @param i 24E}<N,g  
*/ /JFUU[W  
private void insertSort(int[] data, int start, int len) { + ,%&e  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :Pvzl1  
} gYNjzew'  
} 1$D_6U:H0  
} +b.g$CRr  
} T^Y([23  
[h^2Y&Au5  
堆排序: M^O2\G#B  
*C5R}9O5  
package org.rut.util.algorithm.support; nH`Q#ZFz]?  
{t0) q  
import org.rut.util.algorithm.SortUtil; =7w\ 7-.m  
9Xj7~,  
/** ZX>AE3wk  
* @author treeroot [NaN>BZ?  
* @since 2006-2-2 !qv ea,vw  
* @version 1.0 (MR_^t  
*/ zfc'=ODX  
public class HeapSort implements SortUtil.Sort{ SW*"\X;  
:ctu5{"UJ  
/* (non-Javadoc) _oHNkKQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [#l*_0  
*/ MXw hxk#E  
public void sort(int[] data) { b6Wqr/  
MaxHeap h=new MaxHeap(); byLft 1  
h.init(data); ;*Ivn@L  
for(int i=0;i h.remove(); oE+R3[D?r  
System.arraycopy(h.queue,1,data,0,data.length); 2^y ^q2(r  
} <}E!w_yi  
pnjXf.g"O  
private static class MaxHeap{ 4(|cG7>9-  
ba[1wFmcL  
void init(int[] data){ qHuZcht  
this.queue=new int[data.length+1]; v-#Q7T  
for(int i=0;i queue[++size]=data; #pb92kA'  
fixUp(size); e4!:c^?  
} }])oM|fgO  
} )\eI;8  
%+j8["VEC  
private int size=0; LW[9  
:[O 8  
private int[] queue; ()5[x.xK@  
X;i~ <Tq  
public int get() { EH256f(&  
return queue[1]; |.F$G<  
} \MbB#  
eM$sv9?  
public void remove() { [Jogt#Fj ]  
SortUtil.swap(queue,1,size--); ?\t#1"d  
fixDown(1); %/|9@er  
} W+PJZn  
file://fixdown HkO7R `  
private void fixDown(int k) { *VFf.aPwYi  
int j; h-G)o[MA  
while ((j = k << 1) <= size) { _CmOd-y  
if (j < size %26amp;%26amp; queue[j] j++; vbb 5f#WZ  
if (queue[k]>queue[j]) file://不用交换 )2bvQy8K  
break; 4x  
SortUtil.swap(queue,j,k); ~R22?g.  
k = j; 1DE1.1  
} ;A]@4*q  
} {@+Ty]e  
private void fixUp(int k) { Yzh"1|O  
while (k > 1) { 0\[Chja  
int j = k >> 1; 2 lj'"nm  
if (queue[j]>queue[k]) MRb-H1+Xf  
break; OR%'K2C6S  
SortUtil.swap(queue,j,k); U%<koD[,  
k = j; Y~L2  
} }s(N6a&(  
} ~\Hc,5G  
EdlTdn@A  
} <kGU,@6PF  
3QG7C{  
} K_RjX>q%N  
+89*)pk   
SortUtil: 1guJG_;z  
`%+Wz0(K  
package org.rut.util.algorithm; g/P+ZXJ  
-(  
import org.rut.util.algorithm.support.BubbleSort; bYEy<7)x  
import org.rut.util.algorithm.support.HeapSort; iV&6nh(  
import org.rut.util.algorithm.support.ImprovedMergeSort; x4E7X_  
import org.rut.util.algorithm.support.ImprovedQuickSort; %Z):>'  
import org.rut.util.algorithm.support.InsertSort; , Wk?I%>  
import org.rut.util.algorithm.support.MergeSort; H."EUcE{  
import org.rut.util.algorithm.support.QuickSort; d-k%{eBV  
import org.rut.util.algorithm.support.SelectionSort; {]:7bV#JP  
import org.rut.util.algorithm.support.ShellSort; U)E(`{p]  
>8k _n  
/** :cF[(i/k4  
* @author treeroot ^Wt*  
* @since 2006-2-2 xT   
* @version 1.0 .(^ ,z&  
*/ f33l$pOp  
public class SortUtil { - `p4-J!Fy  
public final static int INSERT = 1; ] Hztb  
public final static int BUBBLE = 2; L*&p !  
public final static int SELECTION = 3; [n \2  
public final static int SHELL = 4; ]Q>.HH  
public final static int QUICK = 5; m 8aITd8  
public final static int IMPROVED_QUICK = 6; [_1G@S6Ex  
public final static int MERGE = 7; PE5R7)~A  
public final static int IMPROVED_MERGE = 8; +RyjF~  
public final static int HEAP = 9; VXR>]HUF  
<Bw^!.jAF  
public static void sort(int[] data) { X!9 B2w  
sort(data, IMPROVED_QUICK); #,":vr  
} j$?{\iXZ  
private static String[] name={ C -\S/yd  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;#vKi0V7  
}; whi`Z:~  
23Nw!6S  
private static Sort[] impl=new Sort[]{ ;\14b?TUH  
new InsertSort(), LUM@#3&  
new BubbleSort(), ,*7 (%k^`  
new SelectionSort(), :lf+W  
new ShellSort(), Hn5|B 3vN  
new QuickSort(), `f*Q$Ulqx  
new ImprovedQuickSort(), #a'Ex=%rM  
new MergeSort(), v(ZYS']d2  
new ImprovedMergeSort(), tjdaaN#,V  
new HeapSort() L?WFm n  
}; kBD>-5Sn_T  
$5ak_@AC  
public static String toString(int algorithm){ P)Rh=U  
return name[algorithm-1]; j g8fU  
} d@XV:ae  
+n{#V;J  
public static void sort(int[] data, int algorithm) { gcdlT7F)b-  
impl[algorithm-1].sort(data); CGY]r.O*  
} -f%'  
q*_/to  
public static interface Sort { a&c6.#E{y  
public void sort(int[] data); +l9!Fl{MK\  
} \s=t|Wpu2  
C71qPb|$R  
public static void swap(int[] data, int i, int j) { E4|jOz^j4\  
int temp = data; w5Ay)lz  
data = data[j]; BD_Iz A<wK  
data[j] = temp; NQ(1   
} GP?M!C,/}k  
} DU5c=rxW  
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