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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。 Nay&cOz  
插入排序: dHO8 bYBH  
qC:QY6g$N  
package org.rut.util.algorithm.support; jBLLx{  
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import org.rut.util.algorithm.SortUtil; 5u=$m^@{  
/** /_{B_2i/>  
* @author treeroot yNDplm|9*  
* @since 2006-2-2 [#mRlL0yk  
* @version 1.0 (JI[y"2  
*/  J]4pPDm  
public class InsertSort implements SortUtil.Sort{ <%b a 3<sg  
Z#znA4;)  
/* (non-Javadoc) T6^ H%;G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "f N=Y$G  
*/ qS?uMms7w  
public void sort(int[] data) { dK d"2+fH  
int temp; kPvR ,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J<h! H  
} /c|X:F!;X#  
} RTQtXv6mD  
} -F~"W@9r  
4uy:sCmu  
} 9ymx;  
!HCuae3_  
冒泡排序: =tQ^t4_  
0/TP`3$X#"  
package org.rut.util.algorithm.support; D4IP$pAD  
1G`zwfmh~  
import org.rut.util.algorithm.SortUtil; }[mLtv%&  
b2Oj 1dP1  
/** Zp qb0ro  
* @author treeroot HF;$Wf+=J  
* @since 2006-2-2 MfG8=H2#|  
* @version 1.0 PW QRy  
*/ MiN|u  
public class BubbleSort implements SortUtil.Sort{ C.N#y`g  
LCMZw6p  
/* (non-Javadoc) @|6#]&v`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $az9Fmta  
*/ +"GBuNh  
public void sort(int[] data) { bx._,G  
int temp; '4e, e|r  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Boj#r ,x  
if(data[j] SortUtil.swap(data,j,j-1); >hv8zHOO:  
} * &O4b3R  
} <s wfYT!N  
} kK%@cIXS3  
} CAbR+ y  
q5#6PYIq  
} tFvXVfml  
6^NL>|?  
选择排序: 8k9Yoht  
o>75s#= b=  
package org.rut.util.algorithm.support; Y{7)$'At  
mPJ@hr%3  
import org.rut.util.algorithm.SortUtil; s0\}Q=s[  
=Ohro '   
/** T o$D [-  
* @author treeroot B1 Y   
* @since 2006-2-2 0u?Vn N<  
* @version 1.0 )z!#8s  
*/ b"pN;v  
public class SelectionSort implements SortUtil.Sort { /C6$B)w_*{  
3 4:Y_*  
/* !t!'  
* (non-Javadoc) L#MgoBXr  
* 9+"ISXS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `;)op3A'  
*/ GV8`.3DBOF  
public void sort(int[] data) { =<[M$"S7d6  
int temp; r8,'LZIz  
for (int i = 0; i < data.length; i++) { XDyFe'1I  
int lowIndex = i; Oh; V%G  
for (int j = data.length - 1; j > i; j--) { TH>7XK<90M  
if (data[j] < data[lowIndex]) { u3C0!{v  
lowIndex = j; /WMJ#IE  
} Ti>2N  
} -GODM128 ^  
SortUtil.swap(data,i,lowIndex); ]FEsN6  
} [vn"r^P  
} WXFC e@  
3eN(Sw@p  
} 4Ul*`/d  
~tZy-1  
Shell排序: t*wV<b  
Q`!<2i;  
package org.rut.util.algorithm.support; zb. ^p X  
1 &-%<o  
import org.rut.util.algorithm.SortUtil; %@^9(xTE  
Pf#DBW*  
/** q'KXn0IY#  
* @author treeroot ,% *Jm  
* @since 2006-2-2 I/_,24[  
* @version 1.0 F0KNkL>&g  
*/ (V<pz2\  
public class ShellSort implements SortUtil.Sort{ &I7T ?  
'<1Q;3Ho  
/* (non-Javadoc) 6F; |x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GsiT!OP]y  
*/ U.c~l,5%"  
public void sort(int[] data) { 6ANA oWg*  
for(int i=data.length/2;i>2;i/=2){ A \-r%&.  
for(int j=0;j insertSort(data,j,i); 9)J)r \  
} bo[[<j!"I  
} 8V@\$4@b!#  
insertSort(data,0,1); C] M{  
} plgiQr #  
7VW/v4n  
/** IPk"{T3  
* @param data \4Z"s[8}  
* @param j EfqC_,J*3  
* @param i 4\y>pXML-U  
*/ DAQozhP8  
private void insertSort(int[] data, int start, int inc) { [E;~Y_l  
int temp; ;Swj`'7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Voo_ ?  
} N{?Qkkgx  
} ,U=7#Cf!  
} 1?{w~cF}  
O#`y;%  
} jBU!xCO  
%B(E;t63W  
快速排序: Ns6C xE9  
\9k{h08s  
package org.rut.util.algorithm.support; T1M>N  
B&?xq)%*#  
import org.rut.util.algorithm.SortUtil; G\#dMCk?  
<5npVm  
/** N:UA+  
* @author treeroot ^3ysY24Q  
* @since 2006-2-2 Kgb<uXk  
* @version 1.0 C8$/z>tQ  
*/ Q+Ya\1$6A  
public class QuickSort implements SortUtil.Sort{ /JmWiBQIn  
0RP{_1k  
/* (non-Javadoc) {}tv(8]^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m_b_)/  
*/ [Y8ot-6  
public void sort(int[] data) { G&#l3bkQ  
quickSort(data,0,data.length-1); |3=tF"h  
} :s#&nY  
private void quickSort(int[] data,int i,int j){ YQaL)t$0  
int pivotIndex=(i+j)/2; %kL]-Z  
file://swap 9` G}GU]@}  
SortUtil.swap(data,pivotIndex,j); w C-x'  
T^H`$;\  
int k=partition(data,i-1,j,data[j]); z6'l" D'h  
SortUtil.swap(data,k,j); :PP!v!vk  
if((k-i)>1) quickSort(data,i,k-1); %i@Jw  
if((j-k)>1) quickSort(data,k+1,j); ~i=5NUE  
X@Yl<9|i  
} lQ|i Ws  
/** \<x{U3q5  
* @param data {%QWv%|  
* @param i .2/W.z2  
* @param j <v$yXA  
* @return :2-!bLo}&  
*/ ,e+S7 YX  
private int partition(int[] data, int l, int r,int pivot) { ^A$p)`KR  
do{ J4jL%5t  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); s` o _ER  
SortUtil.swap(data,l,r); 7jYW3  
} -}P/<cu:  
while(l SortUtil.swap(data,l,r); &u0on) E  
return l; s3oQ( wC %  
} #RP7?yGM,  
y5N,~@$r  
} { u1\M  
MJG)fFl] O  
改进后的快速排序: nj7\vIR7  
jT:kk  
package org.rut.util.algorithm.support; ]`\~(*;[W9  
WxS$yUu  
import org.rut.util.algorithm.SortUtil; N>',[4pJ|  
 6adXE  
/** rM)-$dZ  
* @author treeroot 2IFEl-IB[  
* @since 2006-2-2 =R0#WMf$@  
* @version 1.0 b_-?ZmV^r  
*/ p"o_0 {8  
public class ImprovedQuickSort implements SortUtil.Sort { #i| AE`  
o '!WW  
private static int MAX_STACK_SIZE=4096; 5+Hw @CY3  
private static int THRESHOLD=10; c8M'/{4rH  
/* (non-Javadoc) TbR!u:J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (kZ2D  
*/ R% )7z)~  
public void sort(int[] data) { R2dCp|6A  
int[] stack=new int[MAX_STACK_SIZE]; -+&sPrQ  
Xv?'*2J  
int top=-1; |Whkq/Zg  
int pivot; !T1)tGrH  
int pivotIndex,l,r; !z?;L_Lb  
A9ru]|?  
stack[++top]=0; %<;PEQQ|C  
stack[++top]=data.length-1; THz=_L6  
IW- BY =C  
while(top>0){ 1n EW'F  
int j=stack[top--]; ~\[\S!"  
int i=stack[top--]; ;p/$9b.0:  
$qfNEAmDf\  
pivotIndex=(i+j)/2;  H+Se  
pivot=data[pivotIndex]; jHBP:c  
xJF}6yPm@  
SortUtil.swap(data,pivotIndex,j); 'Y:ZWac,  
wQ~F%rQ$  
file://partition :DR}lOi`  
l=i-1; k+y>xI,  
r=j; ^Mi&2AvS  
do{ E~eSHJ(oR7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nfA#d-  
SortUtil.swap(data,l,r); LLW xzu!<  
} -%>.Z1uj  
while(l SortUtil.swap(data,l,r); ql%]t~HR0  
SortUtil.swap(data,l,j); 'A#F< x  
/|aD,JVN"  
if((l-i)>THRESHOLD){ %$}* y   
stack[++top]=i; ljw>[wNv  
stack[++top]=l-1; GB` G(a  
} av4g/7=  
if((j-l)>THRESHOLD){ ip2BvN&  
stack[++top]=l+1; |-.r9;-b  
stack[++top]=j; E:S (v  
} kc}&\y  
S$1dXXT  
} 2j*o[kAE  
file://new InsertSort().sort(data); !; COFR  
insertSort(data); z.]  
} V] 0~BV  
/** O`Ge|4  
* @param data KImazS^  
*/ zua=E2  
private void insertSort(int[] data) { jY ~7-  
int temp; sboX<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %TA@-tK=  
} `=VN\W^&  
} m{ C  
} Y+ea  
FvV:$V|  
} rT{+ h}vO  
;-@v1I;  
归并排序: q8P$Md-=b1  
=#sr4T  
package org.rut.util.algorithm.support; Uh8c!CA8:\  
"[p-Iy1  
import org.rut.util.algorithm.SortUtil; \1cJ?/$_Of  
?(P3ZTk?.  
/** :igURr  
* @author treeroot V j"B/@  
* @since 2006-2-2 ;PF!=8dW  
* @version 1.0 KI~M.2pk  
*/ pv){R;f  
public class MergeSort implements SortUtil.Sort{ ;&MI M`&$  
WwYy[3U  
/* (non-Javadoc) 9#ZR0t.cY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ph|\%P`>%  
*/ PcQqdU^!  
public void sort(int[] data) { nK;c@!~pS  
int[] temp=new int[data.length]; X!ad~bt  
mergeSort(data,temp,0,data.length-1); 92)e/t iP  
} @?\[M9yK  
=}7[ypQM`]  
private void mergeSort(int[] data,int[] temp,int l,int r){ @h";gN  
int mid=(l+r)/2; Zm~oV?6  
if(l==r) return ; ?5MOp  
mergeSort(data,temp,l,mid); IW-lC{hK  
mergeSort(data,temp,mid+1,r); (_'Efpg|  
for(int i=l;i<=r;i++){ si.w1  
temp=data; yttIA/  
} tf_<w?~  
int i1=l; J'no{3Kt z  
int i2=mid+1; d-sK{ZC"y  
for(int cur=l;cur<=r;cur++){ |Wzdu2T  
if(i1==mid+1) XlHt(d0h  
data[cur]=temp[i2++]; %^ z## 7^  
else if(i2>r) n#lZRwhq  
data[cur]=temp[i1++]; ^-GzWT  
else if(temp[i1] data[cur]=temp[i1++]; M5>cYVG  
else t?<pyw $  
data[cur]=temp[i2++]; 7"0l>0 \  
} sGs_w:Hn  
} Y}Gf%Xi,  
YdNmnB %J  
} |Xv]s61  
$m)[> C  
改进后的归并排序: TDo!yQ  
oUG!=.1}K5  
package org.rut.util.algorithm.support; K:\db'``  
(np60mX<  
import org.rut.util.algorithm.SortUtil; 9j~|m  
eQQ*ZNG  
/** }4A $j{\  
* @author treeroot L5-Kw+t  
* @since 2006-2-2 d2XS w>  
* @version 1.0 ,U^V]jC  
*/ 2J5RZg9jL  
public class ImprovedMergeSort implements SortUtil.Sort { B8sc;Z.  
B%Vz -t  
private static final int THRESHOLD = 10; Tz{f 5c&  
{,`)  
/* [c_o.`S_\  
* (non-Javadoc) oe*Y(T\G  
* 27q=~R}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Gh5 ^$w?j  
*/ aS,M=uqqK  
public void sort(int[] data) { >GV = %  
int[] temp=new int[data.length]; G34fxhh  
mergeSort(data,temp,0,data.length-1); krI@N}OU  
} o@!Uds0  
AV%t<fDG#  
private void mergeSort(int[] data, int[] temp, int l, int r) { /$NZj" #  
int i, j, k; o+j~~P  
int mid = (l + r) / 2; <+\ w.!  
if (l == r) M!j: 2dT"  
return; _cw~N p  
if ((mid - l) >= THRESHOLD) /3mt=1/~{B  
mergeSort(data, temp, l, mid); aH!2zC\:T  
else g=5vnY  
insertSort(data, l, mid - l + 1); XV|u!'Ey  
if ((r - mid) > THRESHOLD) _2N7E#m"S  
mergeSort(data, temp, mid + 1, r); "Smek#l  
else dnW#"  
insertSort(data, mid + 1, r - mid); g4-UBDtYt  
K[~fpQGbV1  
for (i = l; i <= mid; i++) { mv;;0xH  
temp = data; -{ M(1vV(=  
} N& 683z  
for (j = 1; j <= r - mid; j++) { 5U!yc7eBI/  
temp[r - j + 1] = data[j + mid]; n?=d)[]  
} B{ptP4As-  
int a = temp[l]; VwKo)zH  
int b = temp[r]; rM y(NAo_  
for (i = l, j = r, k = l; k <= r; k++) { zs<2Ozv  
if (a < b) { ?7]UbtW[  
data[k] = temp[i++]; / 8 0Q  
a = temp; 2Sg^SZFH+o  
} else { ,/uVq G  
data[k] = temp[j--]; 0 P]+/  
b = temp[j]; >q !:*  
} ZP}NFh%,u  
} "f5neW  
} }mx>3G{d  
,VdNP  
/** 9J $"Qt5;6  
* @param data Q6lC:cB<  
* @param l aHR&6zj4  
* @param i rOyKugHe  
*/ T}55ZpS C&  
private void insertSort(int[] data, int start, int len) { Z;qgB7-M  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]8;2Oh   
} Z| f~   
} '1r<g\ l  
} +IkL=/';#  
} )] C"r_  
io1hUZ  
堆排序: #i1z&b#@  
Q`{2 yU:r  
package org.rut.util.algorithm.support; c ?(X(FQ  
2iV/?.<Z&  
import org.rut.util.algorithm.SortUtil; b\9MM  
o NqIrYH'  
/** ]?3-;D.eG  
* @author treeroot J'H}e F`  
* @since 2006-2-2 n&N>$c,T27  
* @version 1.0 !x@3U^${  
*/ V[RsSZx =  
public class HeapSort implements SortUtil.Sort{ OoqA`%  
u>y/<9]q8  
/* (non-Javadoc) 1>IA9]D7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z3mo2e  
*/ S+* g  
public void sort(int[] data) { ZK p9k6  
MaxHeap h=new MaxHeap(); T5gL  
h.init(data); EjDr   
for(int i=0;i h.remove(); qQ T ^d  
System.arraycopy(h.queue,1,data,0,data.length); E# UAC2Q  
} x3L0;:Fx8P  
.2v)x  
private static class MaxHeap{ VTIRkC wl@  
IL&;2%  
void init(int[] data){ oT}-i [=}  
this.queue=new int[data.length+1]; wk[4Qsk<  
for(int i=0;i queue[++size]=data; hqwDlapTt  
fixUp(size); ?Fp2W+M j  
} ?Zv>4+Y'  
} ["7]EW\!:  
>)6d~  
private int size=0; id:6O+\  
iR39lOr  
private int[] queue; \>N"{T  
L2}p<?f  
public int get() { n{8v^x  
return queue[1]; z\zqmW6  
} 2[QyH'"^E  
W6Z3UJ-  
public void remove() { ;cD&qheDV  
SortUtil.swap(queue,1,size--); ..a@9#D  
fixDown(1); /4wPMAlb  
} CjT]!D)s  
file://fixdown 3^-yw`  
private void fixDown(int k) { RJa1p YK  
int j; qw35LyL  
while ((j = k << 1) <= size) { tuIQiWHbM  
if (j < size %26amp;%26amp; queue[j] j++; <#>{7" }  
if (queue[k]>queue[j]) file://不用交换 %Xjg/5G-  
break; Jnl#d0) -  
SortUtil.swap(queue,j,k); `Dp_c&9]  
k = j; Zg;%$ kSQ  
} 3"HX':8x  
}  \s^4f#  
private void fixUp(int k) { jk9/EmV*r  
while (k > 1) { cOrFe;8-.  
int j = k >> 1; GX,)~Syw*  
if (queue[j]>queue[k]) v~`'!N8  
break; {O"N2W  
SortUtil.swap(queue,j,k); oF {u  
k = j; -(1GmU5v(  
} D9/PVd&#  
} PGNH<E)  
|:)ARH6l#  
} {T'M4y=)i  
_<m yM2z  
} yDmx)^En  
\l71Q/y6u`  
SortUtil: H*R4AE0  
XZH\HK)K-]  
package org.rut.util.algorithm; k?VH4 yA  
.z}*!   
import org.rut.util.algorithm.support.BubbleSort; Ux b>)36I  
import org.rut.util.algorithm.support.HeapSort; W0;MGBfb  
import org.rut.util.algorithm.support.ImprovedMergeSort; S<Od`I  
import org.rut.util.algorithm.support.ImprovedQuickSort; HBiUp$(mB  
import org.rut.util.algorithm.support.InsertSort; $-p#4^dg  
import org.rut.util.algorithm.support.MergeSort; G/y;o3/[Z  
import org.rut.util.algorithm.support.QuickSort; E;-*LT&{  
import org.rut.util.algorithm.support.SelectionSort; s^zX9IVnp  
import org.rut.util.algorithm.support.ShellSort; 3Xl!Z^W  
+V;@)-   
/** }+dDGFk  
* @author treeroot *9)yN[w  
* @since 2006-2-2 !v68`l15  
* @version 1.0 (y!V0iy]  
*/ L7OFZ|gUz  
public class SortUtil { kS1?%E,)q  
public final static int INSERT = 1; <BX'Owbs!O  
public final static int BUBBLE = 2; ukwO%JAr  
public final static int SELECTION = 3; `w K6B5>  
public final static int SHELL = 4; klxNGxWAX  
public final static int QUICK = 5; MR}h}JEx0  
public final static int IMPROVED_QUICK = 6; cVuT|b^  
public final static int MERGE = 7; 9`Zwa_Tni  
public final static int IMPROVED_MERGE = 8; :>3/*"vx?G  
public final static int HEAP = 9; *EllE+M{n  
r31)Ed$  
public static void sort(int[] data) { 'wd&O03&  
sort(data, IMPROVED_QUICK); ~Hb2-V  
} kmur={IR  
private static String[] name={ aM!%EaT  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )m<CmYr2  
}; =)IV^6~b  
DtglPo_(  
private static Sort[] impl=new Sort[]{ -a`P W  
new InsertSort(), n?}7vz;  
new BubbleSort(), :e!3-#H  
new SelectionSort(),  @s7wKk  
new ShellSort(), !.@F,wZvY  
new QuickSort(), x03@}M1  
new ImprovedQuickSort(), =BroH\  
new MergeSort(), aK5O0`  
new ImprovedMergeSort(), RZbiiMC>  
new HeapSort() *RJiHcII  
}; ~jDf,a2  
5h@5.-}  
public static String toString(int algorithm){ _qvzZ6  
return name[algorithm-1]; Sgq" 3(+%,  
} 91\]Dg  
M&J$9X  
public static void sort(int[] data, int algorithm) { kX "*kD  
impl[algorithm-1].sort(data); ?G<.W[3  
} 49-wFF  
N-YCOSUu  
public static interface Sort { ='Fh^]*5  
public void sort(int[] data); BI:O?!:9)  
} a_U[!`/ w  
q:<vl^<j  
public static void swap(int[] data, int i, int j) { ~=k?ea/>  
int temp = data; q"$C)o  
data = data[j]; xM2UwTpW  
data[j] = temp; +~\1g^h  
} rt C:3fDy  
} O*udVE>  
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