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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。 q^dI!93n|  
插入排序: <H E'5b  
OY`G_=6!N  
package org.rut.util.algorithm.support; 8'#%7+ "=!  
R{6.O+j`  
import org.rut.util.algorithm.SortUtil; Tj*zlb4  
/** .'7o,)pJ<  
* @author treeroot dmrM %a}W-  
* @since 2006-2-2 #ZGWU_l}  
* @version 1.0 TiF$',WMv  
*/ }kXF*cVg  
public class InsertSort implements SortUtil.Sort{ wEzLfZ Oz/  
f+$/gz  
/* (non-Javadoc) M6|Q~8$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c6dL S  
*/ 9}2I'7]  
public void sort(int[] data) { .6OE8w 1  
int temp; o~^hsm[44J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D@4hQC\  
} A"z')   
} T?7 ZF+yo6  
} OjeM#s#N!  
JYKA@sZHe  
} [>?B`1;@  
|TEf? <"c  
冒泡排序: \kWceu}H,  
)Hlr 09t=]  
package org.rut.util.algorithm.support; iAWPE`u4  
rMf& HX  
import org.rut.util.algorithm.SortUtil; 4U>  
`t ZvIy*  
/** :fpYraBM  
* @author treeroot /k}v m3  
* @since 2006-2-2 %t%+;(M9  
* @version 1.0 b9w9M&?fT  
*/ D 7H$!(F>  
public class BubbleSort implements SortUtil.Sort{ Ty#L%k}-t  
g4j?E{M?  
/* (non-Javadoc) -@L*i|A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d:=5y)  
*/ WRFzb0;01  
public void sort(int[] data) { Sjj &n S  
int temp; yZA }WTGe  
for(int i=0;i for(int j=data.length-1;j>i;j--){ U4O F{  
if(data[j] SortUtil.swap(data,j,j-1); A*~zdZ p  
} &gcKv1a\  
} i6(y Bn  
}  +<AX 0(  
} `;4zIBJ  
jcOxtDTSW  
} .#J'+LxFr  
,T jd  
选择排序: !>;p^^e  
w]F(o  
package org.rut.util.algorithm.support; $xlI"-(  
OZLU>LU  
import org.rut.util.algorithm.SortUtil; 1|n,s-  
SukRJvi  
/** RNp3lXf O  
* @author treeroot #th^\pV  
* @since 2006-2-2 $0sU h]7y  
* @version 1.0 8TC%]SvYim  
*/ FrB}2  
public class SelectionSort implements SortUtil.Sort { nP4jOq*H  
pz@_%IUS  
/*  g5X+iV  
* (non-Javadoc) O\B_=KWDO  
* ;wgm 'jr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "DfvoQP  
*/ gn#4az3@e>  
public void sort(int[] data) { ;&^S-+  
int temp; ix$?/GlL  
for (int i = 0; i < data.length; i++) { # TC x8]F  
int lowIndex = i; do7 [Nj  
for (int j = data.length - 1; j > i; j--) { &D>e>]E|P  
if (data[j] < data[lowIndex]) { |z Gwt Z  
lowIndex = j; 70a7}C\/o  
} "+r8izB  
} 7oh6G  
SortUtil.swap(data,i,lowIndex); lySeq^y?Q  
} b 9F=}.4  
} .z7F58  
>j_,3{eJ  
} TR5"K{WDx  
:_i1)4[!  
Shell排序: GmPNzHDb  
+KrV!Taf  
package org.rut.util.algorithm.support; rM<c;iQ  
S;a{wYF6v  
import org.rut.util.algorithm.SortUtil; \O^b|0zc  
D%Hz'G0|  
/** -?&wD["y  
* @author treeroot UP 75}h9  
* @since 2006-2-2 73rr"> 9#0  
* @version 1.0 S3`zB?7,  
*/ ke2'?,f  
public class ShellSort implements SortUtil.Sort{ {1>V~e8t  
?o"wyF A*  
/* (non-Javadoc) Bk?3lwCT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 89U<9j   
*/ P+wV.pF|  
public void sort(int[] data) { Wb68")$  
for(int i=data.length/2;i>2;i/=2){ }.$oZo9J  
for(int j=0;j insertSort(data,j,i); }rxFX  
} o2@8w[r  
} O (<Wn-  
insertSort(data,0,1); _}EGk4E  
} IE+$ET> t  
Gyk>5Q}}  
/** IO/2iSbW  
* @param data ABSA le  
* @param j 88$G14aXEk  
* @param i 1K"``EvNB  
*/ 's8NO Xlj  
private void insertSort(int[] data, int start, int inc) { H"tS33  
int temp; 5qGRz"\p~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W> s@fN9  
} KtA0 8?B  
} w6'o<=  
} PBTGN;y  
h$_Wh(  
} &-470Z%/  
!r,ZyJU  
快速排序: Jb#*QJ=  
"O<JVC{m  
package org.rut.util.algorithm.support; 7,d^?.~S  
$C##S@  
import org.rut.util.algorithm.SortUtil; A5Qzj]{ba  
dur}3oS0p  
/** TSt-#c4B  
* @author treeroot &$.Vi&{.  
* @since 2006-2-2 Hz`rw\\Xq  
* @version 1.0 B)Hs>Mh|W  
*/ ! %S9H2Lv  
public class QuickSort implements SortUtil.Sort{ E%:!* 9  
ZsirX~W<  
/* (non-Javadoc) j/5>zS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,]w -!I  
*/ 5][Rvu0  
public void sort(int[] data) { xC9^x7%3O  
quickSort(data,0,data.length-1); Pwt4e-  
} x#|=.T  
private void quickSort(int[] data,int i,int j){ gEcVQPD@  
int pivotIndex=(i+j)/2; (9CB&LZ(+E  
file://swap '""qMRCm  
SortUtil.swap(data,pivotIndex,j); pv~XZ(J.1  
U SXz  
int k=partition(data,i-1,j,data[j]); {:$0j|zL1  
SortUtil.swap(data,k,j); ..X efNbl  
if((k-i)>1) quickSort(data,i,k-1); /tikLJ  
if((j-k)>1) quickSort(data,k+1,j); |xG|HJm,  
a.v$+}+.[,  
} YQG[8I  
/** X4>c(1e  
* @param data s<cg&`u,<M  
* @param i su<_?'uH  
* @param j VZ &>zF  
* @return LDN'o1$qo  
*/ sZ{Kl\1@  
private int partition(int[] data, int l, int r,int pivot) { 0NK]u~T<  
do{ [R)?93  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z%Ywjfn'  
SortUtil.swap(data,l,r); pv+FPB  
} s1<_=sfnT  
while(l SortUtil.swap(data,l,r); y%Ui)UMnw]  
return l; s03 DL  
} f&bY=$iff  
[Qa0uM#SU  
} Jvw~b\  
wh l)^D  
改进后的快速排序: ;Z:z'';Lm  
^2[0cne  
package org.rut.util.algorithm.support; U5jY/e_  
O$J'BnPpw  
import org.rut.util.algorithm.SortUtil; lY[>}L*H8  
Ih!UL:Ckh  
/** [&k[k)  
* @author treeroot 7 a !b}  
* @since 2006-2-2 l"p%]\tZ  
* @version 1.0 &STgj|t_  
*/ O?L _9L*  
public class ImprovedQuickSort implements SortUtil.Sort { ' jR83A*  
d~tG#<^`  
private static int MAX_STACK_SIZE=4096; k[R/RhHQ,  
private static int THRESHOLD=10; z kYl IUD  
/* (non-Javadoc) i >Hh_q;'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O?p.kf{b  
*/ i)Vqvb0Q  
public void sort(int[] data) { R!lNm,i  
int[] stack=new int[MAX_STACK_SIZE]; B9KY$^J  
5F+5J)h  
int top=-1; )I9AF,K  
int pivot; Y=sRVypJ  
int pivotIndex,l,r; Mii-Q`.:  
VV)PSodb  
stack[++top]=0; I! {AWfp0  
stack[++top]=data.length-1; Vj_(55WQ  
g3 6oEz~|  
while(top>0){ 8Y3c,p/gS>  
int j=stack[top--];  T/p}Us  
int i=stack[top--]; Wznz  
C(b"0>  
pivotIndex=(i+j)/2; g2^7PtJg  
pivot=data[pivotIndex]; 8N4W}YBs  
1*S It5?4  
SortUtil.swap(data,pivotIndex,j); LTG#nM0  
St-:+=V_  
file://partition .%+'Ts#ie  
l=i-1; <.CO{L\e  
r=j; FVMR9~&+  
do{ 8)ZWR3)+W  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -20o%t  
SortUtil.swap(data,l,r); p<Wb^BE  
} xY(+[T!OF  
while(l SortUtil.swap(data,l,r); ^LaI{UDw%h  
SortUtil.swap(data,l,j); iaQ[}'6!$  
J?)vsnD.H  
if((l-i)>THRESHOLD){ oD4NQR  
stack[++top]=i; [@U8&W  
stack[++top]=l-1; >};,Byv!%  
} ~` @dI  
if((j-l)>THRESHOLD){ Gg|'T}0X  
stack[++top]=l+1; VQU[5C  
stack[++top]=j; C6,GgDH`  
} p18-yt; 1  
eW"i'\`0  
} {/uBZ(   
file://new InsertSort().sort(data);  ^ 'FC.  
insertSort(data); ~fI&F|  
} O*d&H;;  
/** ~QFD ^SoK  
* @param data H/Cv?GJF  
*/ JaKR#Y$+~  
private void insertSort(int[] data) { G]E$U]=9r:  
int temp; V.)y7B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2hEB?ZAQZ  
} (9*s:)zD-  
} .3?'+KZ,  
} +L;[-]E8  
\#1!qeF  
} Dx$74~2e  
z}.!q{Q  
归并排序: `)\_  
z@>z.d4  
package org.rut.util.algorithm.support; EJjTf:  
;38W41d{  
import org.rut.util.algorithm.SortUtil; 7Ro7/PT (  
UBOCd[  
/** Fx4C]S  
* @author treeroot pP68jL  
* @since 2006-2-2 VH4P|w[YF  
* @version 1.0 %}%D8-d}G  
*/ T?!^-PD9*  
public class MergeSort implements SortUtil.Sort{ ehtiu!Vk  
'G>Ejh@t  
/* (non-Javadoc) x5v^@_: jr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2_vE  
*/ (9';zw   
public void sort(int[] data) { LeO ))  
int[] temp=new int[data.length]; 96]lI3 c  
mergeSort(data,temp,0,data.length-1); WLiY:X(+|  
} r/HKxXT  
s#`%c({U|  
private void mergeSort(int[] data,int[] temp,int l,int r){ jz't!wj  
int mid=(l+r)/2; t!c8 c^HR  
if(l==r) return ; J9)wt ?%j  
mergeSort(data,temp,l,mid); ]/p0j$Tq$  
mergeSort(data,temp,mid+1,r); M$1+,[^f  
for(int i=l;i<=r;i++){ m}:";>?#  
temp=data; 2n?\tOm(V  
} &~pj)\_  
int i1=l; IE$x2==)  
int i2=mid+1; to[EA6J8l  
for(int cur=l;cur<=r;cur++){ jPP aL]  
if(i1==mid+1) MVjc.^  
data[cur]=temp[i2++]; Vm'ReH  
else if(i2>r) >r{3t{  
data[cur]=temp[i1++]; M$FXDyr  
else if(temp[i1] data[cur]=temp[i1++]; %83PbH  
else }zRYT_:  
data[cur]=temp[i2++]; H|0B*i@81  
} Y((z9-`  
} lk \|EG  
UL; d H  
} KZ ?<&x  
6Kh: m-E9  
改进后的归并排序: 0MMY{@n  
?XsL4HI x  
package org.rut.util.algorithm.support; Z{chAg\  
si=/=h  
import org.rut.util.algorithm.SortUtil; \4K8*`$  
b6bmvHD  
/** `>?\MWyu  
* @author treeroot .}ohnnJB0  
* @since 2006-2-2 3Aaj+=]W  
* @version 1.0 N TXT0:  
*/ WaWT 5|A  
public class ImprovedMergeSort implements SortUtil.Sort { { YJ.BWr  
zN].W\("\  
private static final int THRESHOLD = 10; 6]T02;b>/,  
EM vV  
/* LAw X9q`  
* (non-Javadoc) BRQ9kK20  
* PHfGl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aC]~   
*/ ?P<&8eY  
public void sort(int[] data) { rMe` HM@  
int[] temp=new int[data.length]; (S5'iks x  
mergeSort(data,temp,0,data.length-1); }w8h^(+B  
} q*DR~Ov  
~W5 fJd0  
private void mergeSort(int[] data, int[] temp, int l, int r) { IAnY+= ^  
int i, j, k; U~Ni2|}\C9  
int mid = (l + r) / 2; gD=s~DgN)  
if (l == r) bT[Q:#GL  
return; @ )<uQ S  
if ((mid - l) >= THRESHOLD) %E1~I\n:F  
mergeSort(data, temp, l, mid); z9h`sY~  
else 'QeqWn  
insertSort(data, l, mid - l + 1); 5y=X?hF~)  
if ((r - mid) > THRESHOLD) yu#Jw  
mergeSort(data, temp, mid + 1, r); .Yha(5(  
else feNr!/  
insertSort(data, mid + 1, r - mid); 6 Y&OG>_\  
'  AeU  
for (i = l; i <= mid; i++) { n9bX[+#d  
temp = data; ji A$6dZU  
} 3WPMS/  
for (j = 1; j <= r - mid; j++) { VxjHB?)  
temp[r - j + 1] = data[j + mid]; b ";#qVv C  
} 8C,?Ai<ro  
int a = temp[l]; "kP.Kx!  
int b = temp[r]; L2{tof  
for (i = l, j = r, k = l; k <= r; k++) { GgA =EdJn  
if (a < b) { (4M#(I~cE  
data[k] = temp[i++]; JB+pd_>5  
a = temp; e{=7,DRH<  
} else { T:; e73  
data[k] = temp[j--]; J'@ I!Jc  
b = temp[j]; <+_OgF1G  
} B'yN &3  
} gQ?>%t]  
} r+m8#uR  
q n=6>wP  
/** VrF]X#\)  
* @param data  `Yoafa  
* @param l bnD>/z]E  
* @param i bI]1!bi]i  
*/ YLPiK  
private void insertSort(int[] data, int start, int len) { H@G7oK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O;H/15j:sK  
} T]CvfvO5  
} @|-ydm0  
} ^o,@9GT s  
} QREIr |q'  
pNQd\nY|0  
堆排序: mXhr: e  
E8%O+x}  
package org.rut.util.algorithm.support; _$cQAH0 E  
Z]9 )1&  
import org.rut.util.algorithm.SortUtil; Ij=hmTl{P  
Cc!n`%qc  
/** +BzKO >  
* @author treeroot IH>+P]+3"3  
* @since 2006-2-2 !vImmhI!I  
* @version 1.0 D#(A?oN  
*/ mT!~;] RrF  
public class HeapSort implements SortUtil.Sort{ F>^k<E?,C  
w?Q@"^IL  
/* (non-Javadoc) IDLA-Vxo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s)]|zu0"Ku  
*/ vja^ O  
public void sort(int[] data) { CZ]+B8Pl(x  
MaxHeap h=new MaxHeap(); /3Se*"u  
h.init(data); xg3G  
for(int i=0;i h.remove(); $#t&W&  
System.arraycopy(h.queue,1,data,0,data.length); z2"2Xqy<U  
} R?l>Vr  
$Q47>/CUc^  
private static class MaxHeap{ /8Vh G|Wb  
!*CL>}-,  
void init(int[] data){ 0CTI=<;  
this.queue=new int[data.length+1]; DCw ldkdJN  
for(int i=0;i queue[++size]=data; VaX>tUW  
fixUp(size); c?IIaj !  
} c!kbHZ<Z  
} i~K~Czmok+  
X_%78$N-a`  
private int size=0; ;K:.*sAa  
Ui?t@.  
private int[] queue; 'BUdySng  
oxGOn('  
public int get() { -Ep-v4}  
return queue[1]; ?5/Sa  
} 4<lZ;M"  
1%1-j  
public void remove() { 3FNj~=N  
SortUtil.swap(queue,1,size--); OsC1('4@  
fixDown(1); 4[Oy3.-c  
} `0 .5aa  
file://fixdown [bGdg  
private void fixDown(int k) { Q^mJ_~  
int j; hTg%T#m  
while ((j = k << 1) <= size) { >@rp]xx  
if (j < size %26amp;%26amp; queue[j] j++; 56TUh_  
if (queue[k]>queue[j]) file://不用交换 J+z0,N[  
break; qPzgGbmD9  
SortUtil.swap(queue,j,k); mg#+%v  
k = j; 2RM0ca _F  
} :SYg)|s  
} gVZ~OcB!W  
private void fixUp(int k) { NEJ Nu_Z  
while (k > 1) { ^-=,q.[7  
int j = k >> 1; RQe#X6'h  
if (queue[j]>queue[k]) vLkZC  
break; a<vCAFQ  
SortUtil.swap(queue,j,k); -.z~u/uL  
k = j; V$:v~*Y9  
} DoImWNLo  
} L#NPt4Sz+  
YpNTq_S1,  
} IClnh1=  
ri\r%x  
} {},G xrQm  
E-! `6  
SortUtil: 6oJ~Jdn'  
ZEApE+m  
package org.rut.util.algorithm; ?[VS0IBS  
eb:uh!  
import org.rut.util.algorithm.support.BubbleSort; -y$|EOi?  
import org.rut.util.algorithm.support.HeapSort; tWc!!Hf2j  
import org.rut.util.algorithm.support.ImprovedMergeSort; nq_sbli  
import org.rut.util.algorithm.support.ImprovedQuickSort; L {\B9b2  
import org.rut.util.algorithm.support.InsertSort; $=H\#e)]Ug  
import org.rut.util.algorithm.support.MergeSort; (<3'LhFII  
import org.rut.util.algorithm.support.QuickSort; iL5+Uf)E3  
import org.rut.util.algorithm.support.SelectionSort; m3,]j\  
import org.rut.util.algorithm.support.ShellSort; r[~K m5  
vT[%*)`  
/** D+"5R5J",  
* @author treeroot c()F%e:n  
* @since 2006-2-2 gv<9XYByt  
* @version 1.0 4}?Yp e-  
*/ A u(Ngq  
public class SortUtil { !xa,[$w(^  
public final static int INSERT = 1; <L5[#V_  
public final static int BUBBLE = 2; w3yI;P  
public final static int SELECTION = 3; [g<6i.<I  
public final static int SHELL = 4; 0~^opNR  
public final static int QUICK = 5; [nflQW6  
public final static int IMPROVED_QUICK = 6; =zI eZ7  
public final static int MERGE = 7; nDaQ1  
public final static int IMPROVED_MERGE = 8; "3}Bv X  
public final static int HEAP = 9; bCE[oi6hb  
!&19%C4  
public static void sort(int[] data) { ?b2%\p`"  
sort(data, IMPROVED_QUICK); K4l,YR;r  
} t;E-9`N  
private static String[] name={ Af*^u|#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u^V`Ucd"R  
}; vp-)$f&  
Pk*EnA)  
private static Sort[] impl=new Sort[]{ 7G2TTa  
new InsertSort(), l} h<2  
new BubbleSort(), YMJjO0  
new SelectionSort(), i mJ{wF  
new ShellSort(), mDj:w#q  
new QuickSort(), dr:)+R  
new ImprovedQuickSort(), V&NOp  
new MergeSort(), ^$yr-p%-  
new ImprovedMergeSort(), [l'~>  
new HeapSort() PsLuyGR.<  
}; =;c? 6{<1  
SRj|XCd  
public static String toString(int algorithm){ | F: ?  
return name[algorithm-1]; ]36R_Dp  
} TQbhK^]  
rX fQ_  
public static void sort(int[] data, int algorithm) { ywCE2N<-V?  
impl[algorithm-1].sort(data); %:((S]vAi  
} qb "H&)aHw  
SOeL@!_  
public static interface Sort { "K~+T\^|k  
public void sort(int[] data); iVnrv`k,  
}  ZY keW  
f@>27&'WV  
public static void swap(int[] data, int i, int j) { 8[}MXMRdb  
int temp = data; GD.mB[f*  
data = data[j]; nvpdu)q<  
data[j] = temp; 0nA17^W  
} hC5ivJ  
} GQ)hZt0  
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