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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。 {)E)&lL  
插入排序: Ns?8N":  
~b.C[s  
package org.rut.util.algorithm.support; {q=(x]C  
Wn61;kV_)  
import org.rut.util.algorithm.SortUtil; MeD}S@H  
/** ?P<8Zw  
* @author treeroot 8UH c,np  
* @since 2006-2-2 FsZW,  
* @version 1.0 #G'Y 2l  
*/ _J'V5]=4  
public class InsertSort implements SortUtil.Sort{ :~K c"Pg  
} 0su[gy[  
/* (non-Javadoc) IYeX\)Gv&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H/qv%!/o  
*/ Ne{2fV>8Ay  
public void sort(int[] data) { C%hMh/Li;  
int temp; :A+nmz!z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HYd&.*41rE  
} 6Fp}U  
} 1C,=1bY  
} 05]y*I  
F:p'%#3rU/  
} B=E<</i  
`zD]*i(  
冒泡排序: $ yd "bJK  
74Fv9  
package org.rut.util.algorithm.support; 8SV.giG;  
S;pKL,d>r  
import org.rut.util.algorithm.SortUtil; 5u(,g1s}UZ  
<1r#hFUUL  
/** ;+d2qbGd  
* @author treeroot #$vQT}  
* @since 2006-2-2 f{s}[p~  
* @version 1.0 O$<m(~[S  
*/ K9{]v=#I  
public class BubbleSort implements SortUtil.Sort{ fk*$}f  
>_R,^iH"  
/* (non-Javadoc) ^T(v4'7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,;RAPT4  
*/ :Q~Rb<']{x  
public void sort(int[] data) { }vp pn=[Y  
int temp; \6]Uj+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9$]I3k  
if(data[j] SortUtil.swap(data,j,j-1); ccUI\!TD{/  
} Y9YE:s  
} T7F)'Mx<  
} ??X3teO{  
} <4l;I*:2&  
[SnnOqWw  
} 0rnne L  
28/At  
选择排序: s&>U-7fx"  
2[^p6s[  
package org.rut.util.algorithm.support; : `Nh}Ka0  
Zo=w8Hr  
import org.rut.util.algorithm.SortUtil; O,$ ?Pj6  
bl/tl_.p00  
/** y(^hlX6gQ  
* @author treeroot rn$LZE %  
* @since 2006-2-2 -0pAj}_2}  
* @version 1.0 MST\_s%[  
*/ %Z:07|57I[  
public class SelectionSort implements SortUtil.Sort { S,Y\ox-  
,CGq_>Z  
/* \J]qd4tF  
* (non-Javadoc) /w5~ O:  
* EbG`q!C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P4h^_*d  
*/ AeQIsrAHE  
public void sort(int[] data) { A>0wqT  
int temp; $w:7$:k  
for (int i = 0; i < data.length; i++) { &:]ej6 V'[  
int lowIndex = i; =Gl6~lJ{_  
for (int j = data.length - 1; j > i; j--) { UKfC!YR2J8  
if (data[j] < data[lowIndex]) { dV~d60jOF  
lowIndex = j; y{Fq'w!ap  
} d9@Pze">e  
} <1^\,cI2  
SortUtil.swap(data,i,lowIndex); ;+86q"&n  
} :6N'%LKK  
} h'QEwW  
B#zu< z  
} EZ  N38T  
Qp]-:b  
Shell排序: -W6r.E$mC  
E%+aqA)f  
package org.rut.util.algorithm.support; oU\Q|mN(  
_^Ds[VAgA  
import org.rut.util.algorithm.SortUtil; (] Zyk, [  
{ \r1A  
/** 0=WZ 8|R  
* @author treeroot =1:dKo8  
* @since 2006-2-2 I;=HXL  
* @version 1.0 .aA 8'/  
*/ ~7kIe+V  
public class ShellSort implements SortUtil.Sort{ vt(A?$j|A  
,JL Y oE+  
/* (non-Javadoc) E#5$O2b#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tf:4}6P1  
*/ X+R?>xq{=h  
public void sort(int[] data) { k+D32]b@  
for(int i=data.length/2;i>2;i/=2){ "s?!1v(v  
for(int j=0;j insertSort(data,j,i); r.JY88"  
} $y2"Q,n+  
} G $P|F6  
insertSort(data,0,1); "OdR"M(G\  
} /:<.Cn>-  
h 2Kx  
/** ~qjnV  
* @param data 5O7 x4bY  
* @param j y4^w8'%MC  
* @param i ]j^V5y"  
*/ 2 c%*u {=:  
private void insertSort(int[] data, int start, int inc) { $@VQ{S  
int temp; BGe&c,feIc  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )`4g,W  
} ZRD@8'1p  
} {j0c)SETN  
} CH`_4UAX%  
; aI`4;  
} $L@os2  
vWGjc2_  
快速排序: j/C.='?%  
=m+'orJ1  
package org.rut.util.algorithm.support; iJ7?6)\  
2O*(F>>dT  
import org.rut.util.algorithm.SortUtil; FHoY=fCI  
T#>1$0yv  
/** 7GyJmzEE  
* @author treeroot )|d]0/<  
* @since 2006-2-2 c~bTK" u  
* @version 1.0 %wc=Mf  
*/ ;X9nYH  
public class QuickSort implements SortUtil.Sort{ ]jkaOj  
,j'>}'wG)  
/* (non-Javadoc) dHAI4Yf4U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \nX5 $[  
*/ K~U5jp c  
public void sort(int[] data) { I_h8)W  
quickSort(data,0,data.length-1);  GD]yP..  
} @~Uu]1  
private void quickSort(int[] data,int i,int j){ qMHI-h_A  
int pivotIndex=(i+j)/2; X AnN<  
file://swap #RyX}t X,  
SortUtil.swap(data,pivotIndex,j); jRhOo% p  
cyQ&w>'  
int k=partition(data,i-1,j,data[j]); e 1 yvvi  
SortUtil.swap(data,k,j); (F wWyt  
if((k-i)>1) quickSort(data,i,k-1); NrNxI'M G  
if((j-k)>1) quickSort(data,k+1,j); ++Z,U  
(,i&pgVZ  
} aYmC LLj  
/** Ki8]+W37  
* @param data +V N&kCx)  
* @param i 4ox[,  
* @param j &B;M.sz~C4  
* @return *k(|r>  
*/ YhZmyYamE  
private int partition(int[] data, int l, int r,int pivot) { \["'%8[:gR  
do{ @N?u{|R:d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1R e5)Y:i  
SortUtil.swap(data,l,r); [VsTyqV a  
}  4dd]Ju  
while(l SortUtil.swap(data,l,r); t:SME'~.P  
return l; "< c,I=A  
}  UE-+P  
i8kyYMPP  
} aj$#8l |zu  
nO{m2&r+  
改进后的快速排序: wcd1.$ n  
$v6`5;#u  
package org.rut.util.algorithm.support; X=W.{?  
U)3*7D  
import org.rut.util.algorithm.SortUtil;  /uyZ[=5  
V1 H3}  
/** 5d4/}o}%"  
* @author treeroot &* Aems{-  
* @since 2006-2-2 :'F7^N3;H  
* @version 1.0 Q#Vg5H4  
*/ V"r2 t9A  
public class ImprovedQuickSort implements SortUtil.Sort { ZbZCW:8>k  
zS6oz=  
private static int MAX_STACK_SIZE=4096;  ^O9_dP:  
private static int THRESHOLD=10; Kb/w+J S  
/* (non-Javadoc) 8vuA`T!~G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j~ 'a %P  
*/ JxV 0y  
public void sort(int[] data) { m7F"kD  
int[] stack=new int[MAX_STACK_SIZE]; ,f]GOH  
Y >83G`*}b  
int top=-1; Zdm7As]  
int pivot; lV*dQwa?i  
int pivotIndex,l,r; }3Mnq?.-  
P`HDQ/^O  
stack[++top]=0; 1dl@2CVS  
stack[++top]=data.length-1; ;ye5HlH}.  
[s"e?Qee  
while(top>0){ _@gd9Fi7J  
int j=stack[top--]; |_Tp:][mf  
int i=stack[top--]; 9CxFj)#5F  
X }W4dpU,  
pivotIndex=(i+j)/2; DUAI  
pivot=data[pivotIndex]; _!} L\E~  
gZ^'hW-{  
SortUtil.swap(data,pivotIndex,j); p;Lp-9H\33  
p1blPBlp  
file://partition |@+/R .l  
l=i-1; V=?qU&r<+  
r=j; k v>rv37u  
do{ xe!([^l&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ei Yj`P  
SortUtil.swap(data,l,r); T- |36Os4  
} n;F/}:c_a  
while(l SortUtil.swap(data,l,r); ;Sqn w  
SortUtil.swap(data,l,j); KH~o0 W  
'Y%@fZf x  
if((l-i)>THRESHOLD){ 4dgo*9  
stack[++top]=i; aYBc)LCd  
stack[++top]=l-1; T|L_ +(M{  
} 9r efv  
if((j-l)>THRESHOLD){ DMcH, _(  
stack[++top]=l+1; k-zkb2  
stack[++top]=j; ],3#[n[ m  
} C;EC4n+s  
ma%PVz`I;9  
} W{v{sQg  
file://new InsertSort().sort(data); cu~\&3 R  
insertSort(data); lQ]8PR t8  
} K!\$MBI  
/** \%! t2=J!  
* @param data }=fVO<R v  
*/ hYI0S7{G  
private void insertSort(int[] data) { 1e'Ez4*  
int temp; jk\04k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :Nt_LsH  
} \mIm}+!H  
} L6ifT`;T  
} ~:ldGfb|  
a*g7uaoP  
} T0Kjnzs  
?e. Ge0&  
归并排序: O #  
43HZ)3!me  
package org.rut.util.algorithm.support; &l0-0 T>  
yG ,oSp|  
import org.rut.util.algorithm.SortUtil; &-h z&/A,  
>B~vE2^tQ~  
/**  !=f$ [1  
* @author treeroot ylo/]pVs  
* @since 2006-2-2 1\{_bUZ&  
* @version 1.0 Bw`7ND}&  
*/ eM1=r:jgE  
public class MergeSort implements SortUtil.Sort{ &{5v[:$  
R=ipK63  
/* (non-Javadoc) 4L`<xX;:{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v[*&@aW0n  
*/ }nO[;2Na  
public void sort(int[] data) { 2l YA% n  
int[] temp=new int[data.length]; }R\9y bv  
mergeSort(data,temp,0,data.length-1); L4x08 e  
} 3SMb#ce*o  
' thEZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ {$ (X,E  
int mid=(l+r)/2; n-5@<y^  
if(l==r) return ; rZt7C(FM$7  
mergeSort(data,temp,l,mid); \(.])I>)eh  
mergeSort(data,temp,mid+1,r); @8jc|X<A  
for(int i=l;i<=r;i++){ 2=[deQs  
temp=data; D#pZN,'  
} 5e|2b] f$  
int i1=l; u[>hs \3k  
int i2=mid+1; ]-D&/88``  
for(int cur=l;cur<=r;cur++){ 5YW.s   
if(i1==mid+1) YO3$I!(  
data[cur]=temp[i2++]; P\3$Y-id  
else if(i2>r) [Dv6z t>  
data[cur]=temp[i1++]; %{sL/H_  
else if(temp[i1] data[cur]=temp[i1++]; jr=>L:  
else (oiF05n h  
data[cur]=temp[i2++]; _Cd_i[K[  
} Tam\,j  
} ,]\:]Y&?  
CQ( _$  
} 3!OO_  
MUeS8:q-N  
改进后的归并排序:  -l ?J  
=D"H0w <zw  
package org.rut.util.algorithm.support; 6 pQbh*  
2o\GU  
import org.rut.util.algorithm.SortUtil; ENEnHu^  
pEn3:.l<  
/** .0eHP  
* @author treeroot cfg_xrW0^  
* @since 2006-2-2 w{HDCPuS  
* @version 1.0 NETji:d  
*/ (K}Md~  
public class ImprovedMergeSort implements SortUtil.Sort { qOi3`6LCV  
4wa8Vw`  
private static final int THRESHOLD = 10; bktw?{h  
tK$x=9M  
/* DKzP)!B "  
* (non-Javadoc) 51Nh"JTy  
*  Du*O|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F9Bj$`#)  
*/ pH'1be{K  
public void sort(int[] data) { G.}Ex!8R7_  
int[] temp=new int[data.length]; _s&sA2r<  
mergeSort(data,temp,0,data.length-1); c[DC  
} ju@5D h  
GkutS.2G#  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2Y+8!4^L a  
int i, j, k; N)0I+>, ^  
int mid = (l + r) / 2; yU"'h[^  
if (l == r) pR VL}^Rk  
return; HxgH*IMs  
if ((mid - l) >= THRESHOLD) Q.dHg7+D  
mergeSort(data, temp, l, mid); n* 7mP   
else ?pLKUAh  
insertSort(data, l, mid - l + 1); P!Mz5QZ+  
if ((r - mid) > THRESHOLD) A)X 'We  
mergeSort(data, temp, mid + 1, r); "E><:_,\  
else t\p_QWnF  
insertSort(data, mid + 1, r - mid); !{L6 4qI  
S(5aJ[7Zm  
for (i = l; i <= mid; i++) { F%v?,`_&I  
temp = data; OFtAT@ =O  
} e+ZC<Bdh  
for (j = 1; j <= r - mid; j++) { 6-'Y*  
temp[r - j + 1] = data[j + mid]; XP$1CWI  
} -i}@o1o\  
int a = temp[l]; *Y2d!9F}Sa  
int b = temp[r]; :e&P's=  
for (i = l, j = r, k = l; k <= r; k++) { wF`9}9q  
if (a < b) { abvA*|  
data[k] = temp[i++]; ),K!| 7#h  
a = temp; ~TGk`cAM>  
} else { 6 s+ Z  
data[k] = temp[j--]; dB^')-wA  
b = temp[j]; -ty_<m]  
} cE*Gd^  
} m>@$T x  
} CDz-IQi  
n-cz xq%n  
/** Xu1tN9:oE  
* @param data h.\9a3B:r  
* @param l f"0{e9O]2  
* @param i o~Im5j],*  
*/ oXR%A7  
private void insertSort(int[] data, int start, int len) { )eFq0+6*)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); a*8^M\>m4  
} 9tnW:Nw~  
} D;V FM P  
} =a_B'^`L  
} 'WUevPmt  
8#Q=CTjF  
堆排序: 4YVxRZ1[3  
XG5mfKMt+  
package org.rut.util.algorithm.support; XZaei\rUn)  
C?FUc cI  
import org.rut.util.algorithm.SortUtil; #eqy!QdePf  
8bB'[gJ]{  
/** J% B(4`  
* @author treeroot 7[l "=  
* @since 2006-2-2 Dl3Df u8  
* @version 1.0 ~6nq$(#  
*/ ]i=\5FH e  
public class HeapSort implements SortUtil.Sort{ kpkN GQ2  
az(u=}  
/* (non-Javadoc) <%(nF+rQA"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F:8cd^d~u  
*/ &}1PH% 6  
public void sort(int[] data) { Xm7Nr#  
MaxHeap h=new MaxHeap(); HDyus5g  
h.init(data); ;b[% L&  
for(int i=0;i h.remove(); ~CQYF,[Th  
System.arraycopy(h.queue,1,data,0,data.length); }5RCks;)*  
} ,R j{^-k  
o3hsPzOQx  
private static class MaxHeap{ B6gSt3w.  
+G3&{#D ?  
void init(int[] data){ 1RtbQ{2F;  
this.queue=new int[data.length+1]; * Yr)>;^  
for(int i=0;i queue[++size]=data; g`jO  
fixUp(size); ,$,6%"'"  
} 29?{QJb  
} /x6,"M[97  
,H3~mq]  
private int size=0; xj/ +Z!,9  
nQc]f*  
private int[] queue; m~fA=#l l  
7P`|wNq  
public int get() { qbjLTE=  
return queue[1]; zR'lQ<u  
} /5@V $c8  
:QnN7&j|(w  
public void remove() { ?~e 8:/@  
SortUtil.swap(queue,1,size--); o;XzJ#P  
fixDown(1); JDi|]JY  
} kzhncku  
file://fixdown JkazB1h  
private void fixDown(int k) { i6)$pARp  
int j; .`84Y  
while ((j = k << 1) <= size) { Z-RgN  
if (j < size %26amp;%26amp; queue[j] j++; aClXg-  
if (queue[k]>queue[j]) file://不用交换 ic:_v?k  
break; We#u-#k_O  
SortUtil.swap(queue,j,k); [N}:Di,S  
k = j; ) 5r*2I  
} uL^Qtmm>M  
} igp[cFN  
private void fixUp(int k) { SU.T0>w  
while (k > 1) { Si#b"ls'  
int j = k >> 1; p/B&R@%  
if (queue[j]>queue[k]) 5!r?U  
break; !M&L<0b:7e  
SortUtil.swap(queue,j,k); cn$E?&-  
k = j; /O1r=lv3Z  
} AF4:v<EN  
} (^'TT>2B  
RLN>*X  
} m$xL#omD  
-MV</  
} ST3aiyG  
gG0P &9xz  
SortUtil: 7z'l}*FRD  
K.?~@5%  
package org.rut.util.algorithm; ve2GRTO^aC  
LlP_`fA  
import org.rut.util.algorithm.support.BubbleSort; s+>VqyHgf  
import org.rut.util.algorithm.support.HeapSort; U+t|wK  
import org.rut.util.algorithm.support.ImprovedMergeSort; Gxu&o%x [  
import org.rut.util.algorithm.support.ImprovedQuickSort; dUOvv/,FZT  
import org.rut.util.algorithm.support.InsertSort; kAbRXID  
import org.rut.util.algorithm.support.MergeSort; jN:!V t  
import org.rut.util.algorithm.support.QuickSort; Ycypd\q/  
import org.rut.util.algorithm.support.SelectionSort; O1pBr=+j+{  
import org.rut.util.algorithm.support.ShellSort; 2]n"7Z8(v8  
$v?+X20  
/** 0 !yvcviw  
* @author treeroot XJ~_FiB  
* @since 2006-2-2 `y; s1nL  
* @version 1.0 tuuc9H4B  
*/ E.]sX_X?  
public class SortUtil { 7pDov@K<{  
public final static int INSERT = 1; h V@C|*A  
public final static int BUBBLE = 2; 3Xgf=yG:M  
public final static int SELECTION = 3; \TS t  
public final static int SHELL = 4; +!IIt {u  
public final static int QUICK = 5; ">]v'h(s  
public final static int IMPROVED_QUICK = 6; [Q &{#%M  
public final static int MERGE = 7; N"MuAUB:K  
public final static int IMPROVED_MERGE = 8; 4:-h\%  
public final static int HEAP = 9; [H-,zY  
1\:puC\)  
public static void sort(int[] data) { R{.5Z/Vp6E  
sort(data, IMPROVED_QUICK); R9Wh/@J]  
} e0%?;w-TL  
private static String[] name={ _Z'j%/-4@D  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" } )O ^xF ~  
}; f>i6f@  
(SV(L~ T_  
private static Sort[] impl=new Sort[]{ /Fej)WQp  
new InsertSort(), @EH:4~  
new BubbleSort(), @^oOXc,r$  
new SelectionSort(), ^~Nz8PCY  
new ShellSort(), ^D8 YF  
new QuickSort(), u1a5Vtel  
new ImprovedQuickSort(), rMIr&T  
new MergeSort(), ,@ A1eX}  
new ImprovedMergeSort(), sXp>4MomV  
new HeapSort() #95.KkF  
}; ri&B%AAc  
2bBTd@m4  
public static String toString(int algorithm){ L@Fw;G|%'  
return name[algorithm-1]; Cdl#LVqs  
} ; mF-y,E  
dxbP'2~  
public static void sort(int[] data, int algorithm) { YXxaD@  
impl[algorithm-1].sort(data); _7>$'V{  
} f^il|Obzl  
hko0 ?z  
public static interface Sort { az@{O4  
public void sort(int[] data); 0qXd?z$  
} J >Zd0Dn  
/v"u4Ipj  
public static void swap(int[] data, int i, int j) { u9rlNmf$  
int temp = data; _hyboQi  
data = data[j]; {s!DRc]ln  
data[j] = temp; I=X-e#HM?  
} Wf/Gt\?  
} n5 dFp%k  
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10+5=?,请输入中文答案:十五