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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。 % %2~%FVb  
插入排序: d{C8}U  
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package org.rut.util.algorithm.support; mj9]M?]  
X<1ymb3  
import org.rut.util.algorithm.SortUtil; [FWB  
/** L;KLmxy#  
* @author treeroot g|!=@9[dv  
* @since 2006-2-2 icK U)  
* @version 1.0 -r0oO~KT  
*/ T(~^X-k  
public class InsertSort implements SortUtil.Sort{ BTE&7/i 21  
dsb z\w3:  
/* (non-Javadoc) A {')  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , -Lv3  
*/ |:SXN4';?  
public void sort(int[] data) { mFIIqkUAL  
int temp; Uf$IH!5;Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z_z '3d.r7  
} a1weTn*  
} Yc(lY N  
} QkO4Td<  
#P1 ;*m  
} Aca ?C  
|C t Q  
冒泡排序: ):Ekf2  
`k08M)  
package org.rut.util.algorithm.support; TR{dNO!q  
MpJx>0j/J  
import org.rut.util.algorithm.SortUtil; r1$x}I#Zv  
? 5hwz  
/** "n<u(m8E  
* @author treeroot x1:1Jj:  
* @since 2006-2-2 m(WVxVB  
* @version 1.0 Y XxWu8  
*/ \<y#$:4r<8  
public class BubbleSort implements SortUtil.Sort{ z &[[4[  
.:, 9Tf  
/* (non-Javadoc) I]ol[ X0S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s|"4!{It  
*/ nON "+c*  
public void sort(int[] data) { v/wR) 9  
int temp; ra\|c>[%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ aII:Pzh]B  
if(data[j] SortUtil.swap(data,j,j-1); _LZ 442  
} Je` w/Hl/U  
} iWn7vv/t  
} It^_?oiK  
} /3~}= b  
sZU Ao&  
} [dXRord  
VU|Cct&)  
选择排序: jTY{MY Jh  
e?-LB  
package org.rut.util.algorithm.support; ]PXpzruy  
2{#=Ygb0  
import org.rut.util.algorithm.SortUtil; 7jF2m'(  
.ZH5^Sv$vp  
/** c1_?Z  
* @author treeroot {*4Z9.2c*  
* @since 2006-2-2 TUVqQ\oF:  
* @version 1.0 _n< @Jk~  
*/ 9}Zi_xK&|e  
public class SelectionSort implements SortUtil.Sort { k8"[)lDc.  
v y F(k3W  
/* UIw6~a3E  
* (non-Javadoc) cGjkx3l*  
* 7kidPAhY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W-ECmw(  
*/ Bk~M^AK@~  
public void sort(int[] data) { 22m'+3I~Y  
int temp; 2E3x=  
for (int i = 0; i < data.length; i++) { y]f| U-f:~  
int lowIndex = i; px_%5^zRQ  
for (int j = data.length - 1; j > i; j--) { BRMR> ~k(  
if (data[j] < data[lowIndex]) { *r]#jY4qx  
lowIndex = j; q0 8  
} $d7{q3K&1  
} S8Yh>j8-  
SortUtil.swap(data,i,lowIndex); HnfTj5J@  
} aw/5#(1R  
} n 6|\  
&rxR"^x\  
} aMjCqu05  
/d-7n|#E  
Shell排序: ZpY"P6  
rk(0w|zR+  
package org.rut.util.algorithm.support; SYTzJK@vZJ  
DnPV Tp(>  
import org.rut.util.algorithm.SortUtil; _Msaub!N  
\Tj(]  
/** bga2{<VF  
* @author treeroot E^. =^bR  
* @since 2006-2-2 PK* $  
* @version 1.0 b%,`;hy{  
*/ sWnU*Q  
public class ShellSort implements SortUtil.Sort{ n-_-;TYH  
^KMZB  
/* (non-Javadoc) [t`QV2um  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _/!IjB:(70  
*/  3^zO G2  
public void sort(int[] data) { Fc<+N0M{  
for(int i=data.length/2;i>2;i/=2){ hY Nb9^  
for(int j=0;j insertSort(data,j,i); BK]q^.7+:  
} Gwkp(9d  
} vd<" G}  
insertSort(data,0,1); xTL"%'|  
} SLc'1{  
WChJ <[]W  
/** D*j\gI  
* @param data `p%&c%*A  
* @param j #yVY! +A  
* @param i izi=`;=D^  
*/ `W8dayZt  
private void insertSort(int[] data, int start, int inc) { qcfLA~y  
int temp; _ #+~#U%5n  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); up7]Yy;o=  
} jM3{A;U2  
} I(Yyg,1Z  
} bmO[9 )G  
~dK)U*Q  
} qzqv-{.h  
DFt1{qS8@u  
快速排序: y(8AxsROp  
mko<J0|4  
package org.rut.util.algorithm.support; gI^*O@Q4{b  
# -Ts]4v  
import org.rut.util.algorithm.SortUtil; UpS`KgF"v  
.r?-O{2t  
/** 7=8e|$K_  
* @author treeroot ZWSYh>"  
* @since 2006-2-2 I%whM~M1+  
* @version 1.0 Ij}RlYQz  
*/  P-QZ=dm  
public class QuickSort implements SortUtil.Sort{ Vj"B#  
v }ZQC8wL  
/* (non-Javadoc) `:A`%Fg8<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F XOA1VEg  
*/ l7P~_X_)"  
public void sort(int[] data) { i4N '[ P}  
quickSort(data,0,data.length-1); |L4K#  
} :- ydsR/  
private void quickSort(int[] data,int i,int j){ ;Z"6ve4  
int pivotIndex=(i+j)/2; ;p#)z/zZ  
file://swap MI@id  
SortUtil.swap(data,pivotIndex,j); T)]5k3{  
/nRi19a%xU  
int k=partition(data,i-1,j,data[j]); l M5Xw  
SortUtil.swap(data,k,j); =?3D:k7z  
if((k-i)>1) quickSort(data,i,k-1); Nd*zSsVlq  
if((j-k)>1) quickSort(data,k+1,j); M:qeqn+  
,xrXby|R"  
} ?y7x#_Exc  
/** `2?9eXC  
* @param data y!Q&;xO+!  
* @param i kQ~*iY  
* @param j .3&zP  
* @return IXugnvyV  
*/ #|34(ML  
private int partition(int[] data, int l, int r,int pivot) { ;z>)&F  
do{ 0zaE?dA]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (<pc4#B@*  
SortUtil.swap(data,l,r); =$IjN v(?  
} l =ZhHON  
while(l SortUtil.swap(data,l,r); &gZ5dTj>  
return l; tm(.a ?p  
} O s@ d&wm  
!t6:uC7H  
} ZUb6d*B  
\&J7>vu^y  
改进后的快速排序: hd.^ZD7  
]z,W1Zs?  
package org.rut.util.algorithm.support; iU\WV  
%J?;@ G)r  
import org.rut.util.algorithm.SortUtil; 1_!*R]aq  
rm NqS+t  
/** !h{qO&ZH=  
* @author treeroot `6b!W0$ -  
* @since 2006-2-2 }r6SV%]:  
* @version 1.0 G_g~-[O  
*/ i!<,8e=  
public class ImprovedQuickSort implements SortUtil.Sort { DQd~!21\|  
HKCMKHR  
private static int MAX_STACK_SIZE=4096; #z)@T  
private static int THRESHOLD=10; ]%3o"|  
/* (non-Javadoc) g6k@E,cI_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `ej  
*/ 2;NIUMAMM  
public void sort(int[] data) { Q uy5H  
int[] stack=new int[MAX_STACK_SIZE]; |Z<NM#1  
`(?E-~#'  
int top=-1; !12W(4S5  
int pivot; 52BlFBNV  
int pivotIndex,l,r; UjwA06  
}| _uqvin  
stack[++top]=0; %< JjftNQ  
stack[++top]=data.length-1; 4,T!zT6&  
74rz~ZM 5  
while(top>0){ ;$ =`BI)  
int j=stack[top--]; Jeyy Z=  
int i=stack[top--]; ig] * Z  
`AeId/A4n  
pivotIndex=(i+j)/2; 0x'>}5`5  
pivot=data[pivotIndex]; ?ZDXT2b~~  
q-3%.<LL  
SortUtil.swap(data,pivotIndex,j); Funep[rA  
3HC aZ?Ry'  
file://partition v&%GK5j7O  
l=i-1; %lAJ]$m  
r=j; Zg%U4m:  
do{ iVzv/Lqm1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~oh=QakW  
SortUtil.swap(data,l,r); Z +@"  
} r>sk@[4h  
while(l SortUtil.swap(data,l,r); s!``OyI/Z  
SortUtil.swap(data,l,j); b&B<'Wb  
J (Yfup  
if((l-i)>THRESHOLD){ .G#S*L  
stack[++top]=i; iV[g.sP-  
stack[++top]=l-1; KD*,u{v;  
} 2GA6@-u\  
if((j-l)>THRESHOLD){ 8'_>A5L/C  
stack[++top]=l+1; >Qz#;HI  
stack[++top]=j; $ckX H,l_  
} 1g5%Gr/0$5  
5V4Ze;K  
} _`|Hk2O  
file://new InsertSort().sort(data); |AW[4Yn>  
insertSort(data); gX5I`mm  
} kehv85  
/** kN >%y&cK  
* @param data c%r?tKG6  
*/ )V%xbDdS  
private void insertSort(int[] data) { J5}-5sV^  
int temp; C] qY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2f16 /0J@  
} ~T9%%W[  
} hV])\t=yf  
} 6]rIYc[,  
\T'uFy9&a  
} Tk9u+;=6$  
2cr~/,YY  
归并排序:  8Br*  
 ;?1H&  
package org.rut.util.algorithm.support; 2Otd  
YA O, rh  
import org.rut.util.algorithm.SortUtil; Wo2TU!  
I.A7H'j  
/** 3'8B rK  
* @author treeroot A9ia[2[  
* @since 2006-2-2 wGD".CS0  
* @version 1.0 E!&A[TlX\  
*/ T>e!DOW;  
public class MergeSort implements SortUtil.Sort{ =0TnH<`  
`Lb^!6`)  
/* (non-Javadoc) \:]Clvc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VG^*?62  
*/ r5> FU>7'  
public void sort(int[] data) { &WE|9  
int[] temp=new int[data.length]; vF0#]  
mergeSort(data,temp,0,data.length-1); d76k1-m\o  
} 4=td}%  
CTQF+Oe8O  
private void mergeSort(int[] data,int[] temp,int l,int r){ b26#0;i  
int mid=(l+r)/2; G1z[v3T  
if(l==r) return ; $Mm=5 K%  
mergeSort(data,temp,l,mid); (wU<Kpt?J  
mergeSort(data,temp,mid+1,r); B> *zQb2:  
for(int i=l;i<=r;i++){ O%;H#3kn&s  
temp=data; %eB0 )'  
} F0W4B  
int i1=l; #\[h.4i  
int i2=mid+1; a,tzt ]>  
for(int cur=l;cur<=r;cur++){ 7T9m@  
if(i1==mid+1) >Lx,<sE  
data[cur]=temp[i2++]; q  9lz  
else if(i2>r) ]l7) F-v  
data[cur]=temp[i1++]; qZACX.Hw  
else if(temp[i1] data[cur]=temp[i1++]; =<R")D]4z  
else %yX?4T;b  
data[cur]=temp[i2++]; 2jV.\C k  
} losm<  
} 56t9h/y  
6z=h0,Y}  
} c[J(H,mt/  
>=BH$4Ce  
改进后的归并排序: 2K4Jkyi  
?TA%P6Lw  
package org.rut.util.algorithm.support; :kz*.1  
kIhP 73M  
import org.rut.util.algorithm.SortUtil; A5cx!h  
NFw7g&1;Kp  
/** cih@: =Qy  
* @author treeroot v7&oHOk!  
* @since 2006-2-2 ["Mq  
* @version 1.0 xDU>y  
*/ ;[TC`DuNj0  
public class ImprovedMergeSort implements SortUtil.Sort { "<ua G?:  
iq2)oC_  
private static final int THRESHOLD = 10; ^F2 OTz4n  
@TF^6)4f  
/* Uyf<:8U\  
* (non-Javadoc) !D6   
* <"F\&M`G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @zo}#.g  
*/ DKw%z8ft|  
public void sort(int[] data) { qniP`P4E  
int[] temp=new int[data.length]; IZ+kw.6e  
mergeSort(data,temp,0,data.length-1); Tlc3l}B*Z  
} l?Vm/YXb  
Agt6G\ n  
private void mergeSort(int[] data, int[] temp, int l, int r) { n+ 1!/H=d  
int i, j, k; Y|JC+ Ee  
int mid = (l + r) / 2; A/V"&H[  
if (l == r) /{@^h#4M1  
return; U$jw8I'.  
if ((mid - l) >= THRESHOLD) w/_n$hX  
mergeSort(data, temp, l, mid); VQ wr8jXye  
else Cq\1t  
insertSort(data, l, mid - l + 1); +Tz Z   
if ((r - mid) > THRESHOLD) hbl%<ItI49  
mergeSort(data, temp, mid + 1, r); (1pI#H"f9  
else 9D@ $Y54  
insertSort(data, mid + 1, r - mid); YuufgPE*H  
i4;`dCT|A  
for (i = l; i <= mid; i++) { 7{F(NJUO1  
temp = data; ${I$@qq83  
} x?s5vxAKf  
for (j = 1; j <= r - mid; j++) { ]gHxvT\E  
temp[r - j + 1] = data[j + mid]; s+#|j;V<  
} .G-F5`2I  
int a = temp[l]; PL vz1}ts  
int b = temp[r]; &q~**^;'  
for (i = l, j = r, k = l; k <= r; k++) { }#0MJ6L  
if (a < b) { 4HX qRFUD  
data[k] = temp[i++]; |]=. ^  
a = temp; i T* !3  
} else { [4qCW{x._  
data[k] = temp[j--]; Xc)V;1  
b = temp[j]; %f??O|O3  
} h M{&if  
} ~{69&T}9  
} vn oI.;H,  
"p]Fq,  
/** +!_?f'kv`  
* @param data F:$Dz?F0v  
* @param l 'zYKG5A  
* @param i "V/|RC  
*/ w\(LG_n|  
private void insertSort(int[] data, int start, int len) { V[E7 mhqy  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6 0C;J!D  
} n =SY66  
} jC_7cAsl  
} _`RzPIS^  
} %Xm3m0nsv{  
)HZUCi/F]  
堆排序: \=n0@1Q=>  
/JP]5M)   
package org.rut.util.algorithm.support; f1eY2UtWQ  
WY=RJe2  
import org.rut.util.algorithm.SortUtil; _PTo !aJL  
{8L)Fw  
/** 31BN ?q  
* @author treeroot 00DWXGt20o  
* @since 2006-2-2 $#Mew:J  
* @version 1.0 "v.]s;g  
*/ xL.T}f~y2>  
public class HeapSort implements SortUtil.Sort{ {sn:Lj0  
Znl&.,c)  
/* (non-Javadoc) X`,4pSQ;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1\v$8pP+  
*/ _-NS-E  
public void sort(int[] data) { 6 yIl)5/=  
MaxHeap h=new MaxHeap(); R<r"jOd]  
h.init(data); L,@O OBD  
for(int i=0;i h.remove(); c k~gB  
System.arraycopy(h.queue,1,data,0,data.length); ?(8z O"  
} 8 I'1~d%$  
_ F0qq j  
private static class MaxHeap{ Dq T)%a  
d<*4)MRN  
void init(int[] data){ qF9rY)ifm  
this.queue=new int[data.length+1]; 3F%Q q7v  
for(int i=0;i queue[++size]=data; j s(E-d/  
fixUp(size); Bjg 21bw^  
} 9&'I?D&8  
} , N :'Z  
apW0(&\  
private int size=0; 6r"PtHr  
rWN#QL()*  
private int[] queue; 3YY<2<  
H>AzxhX[n  
public int get() { kvU0$1  
return queue[1]; dhW;|  
} ~;ink   
1'|6IR1'  
public void remove() { )g4oUZDF  
SortUtil.swap(queue,1,size--); 3t(8uG<rL  
fixDown(1); * *?mZtF  
} /Vpd*obMB  
file://fixdown Z_%}pe39B  
private void fixDown(int k) { DSwF }  
int j; ?FRR";  
while ((j = k << 1) <= size) { Y^dVNC3vd  
if (j < size %26amp;%26amp; queue[j] j++; T7;)HFGeW  
if (queue[k]>queue[j]) file://不用交换  m8rz i:  
break; 0F'75  
SortUtil.swap(queue,j,k); CK e  
k = j; {GF>HHQb  
} ^qpa[6D6x  
} mB(*)PwZ  
private void fixUp(int k) { 0XlX7Sk+  
while (k > 1) { i '!M<>7  
int j = k >> 1; .?SClTqg  
if (queue[j]>queue[k]) 0w >DU^+  
break; D#%J||  
SortUtil.swap(queue,j,k); QN(f8t(  
k = j; dRZor gar  
} XEqg%f  
} >qA5   
i_GE9A=h  
} 1{ #Xa=  
!2x"'o  
} |-7<?aw"  
GS{:7%=j  
SortUtil: 6RZ[X[R[}  
x7e  
package org.rut.util.algorithm; D} 0>x~  
^ v3+w"2  
import org.rut.util.algorithm.support.BubbleSort; Y51XpcXQ  
import org.rut.util.algorithm.support.HeapSort; V>P\yr?  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y6A]dk  
import org.rut.util.algorithm.support.ImprovedQuickSort; /x_C  
import org.rut.util.algorithm.support.InsertSort; @];#4O  
import org.rut.util.algorithm.support.MergeSort; Fm}O,=  
import org.rut.util.algorithm.support.QuickSort; 81a&99k#  
import org.rut.util.algorithm.support.SelectionSort; 4~a0   
import org.rut.util.algorithm.support.ShellSort; o,) p*glO  
*9^CgLF  
/** Cu({%Gy+  
* @author treeroot ^JtGT  
* @since 2006-2-2 hBsjO3n  
* @version 1.0 whNRUOK:  
*/ 4\(;}M-R{  
public class SortUtil { Y,D\_il_  
public final static int INSERT = 1; {s8''+Q#(-  
public final static int BUBBLE = 2; 'D(Hqdr;:  
public final static int SELECTION = 3; T GMHo{ ]  
public final static int SHELL = 4; 89l_%To  
public final static int QUICK = 5; ,WOF)   
public final static int IMPROVED_QUICK = 6; 9[N' HpQ3  
public final static int MERGE = 7; 0jv9N6IM  
public final static int IMPROVED_MERGE = 8; z>j%-3_1  
public final static int HEAP = 9; KHr8\qLH  
_| 8"&*T^  
public static void sort(int[] data) { *Oz5I  
sort(data, IMPROVED_QUICK); h Zlajky  
} (p} N9n$  
private static String[] name={ ]CC= \ <  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;_j\E(^%  
}; }VR&*UJE  
M _U$I7  
private static Sort[] impl=new Sort[]{ BHj]w*Ov  
new InsertSort(), dab>@z4  
new BubbleSort(), },a|WL3^  
new SelectionSort(), 3|:uIoR{  
new ShellSort(), ](_(1  
new QuickSort(), |ry;'[*  
new ImprovedQuickSort(), U7crbj;c)d  
new MergeSort(), qw87B!D  
new ImprovedMergeSort(), 8zj09T[  
new HeapSort() 4v2(YJ%u  
}; (kp}mSw  
>\DXA)nc  
public static String toString(int algorithm){ EZP2Bb5g  
return name[algorithm-1]; 0nie>  
} D3.sR\Hxf  
d c&Qi_W  
public static void sort(int[] data, int algorithm) { BpP\C!:^  
impl[algorithm-1].sort(data); n]Dq  
} L&3=5Bf9  
^ioTd  
public static interface Sort { uFdSD  
public void sort(int[] data); iI&SI#; _  
} =As'vt 0  
5!nZvv  
public static void swap(int[] data, int i, int j) { @oRYQ|.R  
int temp = data; ObM5vrEk|  
data = data[j]; }Pb!u9_  
data[j] = temp; UjKHGsDi4  
} D'nV &m  
} &I(|aZx?J  
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