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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。 Yr31GJ}K  
插入排序: pj )I4C)  
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package org.rut.util.algorithm.support; ld?M,Qd  
@KpzxcEoO  
import org.rut.util.algorithm.SortUtil; ;4_n:XUgo;  
/** C}>&#)IH  
* @author treeroot S; c=6@"  
* @since 2006-2-2 .U3p~M+  
* @version 1.0 k@Tt,.];  
*/ 'IP!)DS  
public class InsertSort implements SortUtil.Sort{ q38; w~H  
S3<v?tqLr  
/* (non-Javadoc) Mm;)O'XDE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qa~[fORO[  
*/ !+6l.`2WI  
public void sort(int[] data) { 4TKi)0 #7  
int temp; <D^x6{}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <(MFEIt  
} J53;w:O  
} k Mo)4 Xp  
} {2x5 V#6  
E)P1`X  
} UE4#j \  
zaZ}:N/w(z  
冒泡排序: US|vYd}u+  
3KKe4{oG  
package org.rut.util.algorithm.support; JK(&E{80  
 {5udol5?  
import org.rut.util.algorithm.SortUtil; ~roHnJ>  
z!+<m<  
/** MUrY>FYgx  
* @author treeroot IMZKlU3  
* @since 2006-2-2 .{ -yveE  
* @version 1.0 v,+@ U6i  
*/ IT(c'}  
public class BubbleSort implements SortUtil.Sort{ =;H'~  
o zYI/b^  
/* (non-Javadoc) ]SL&x:/-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VO Qt{v{1|  
*/ q,DX{:  
public void sort(int[] data) { (UZ*36@PJx  
int temp; :RsPGj6   
for(int i=0;i for(int j=data.length-1;j>i;j--){ AG7}$O.  
if(data[j] SortUtil.swap(data,j,j-1); {nefS\#{  
} FW DuH`-5  
} PHvjsA%"   
} lF( !(>YZ  
} L{f>;[FR  
_6!/}Fm  
} {1aAm+  
yU"G|Ex  
选择排序: lrhAO"/1  
j>xVy]v=|  
package org.rut.util.algorithm.support; jtv Q<4  
%g&,]=W\N  
import org.rut.util.algorithm.SortUtil; A#X.c=  
$>=Nb~t!/  
/** es[5B* 5  
* @author treeroot zD^f%p ["#  
* @since 2006-2-2 o%%x'uC  
* @version 1.0 49oW 'j  
*/ OLNn3 J  
public class SelectionSort implements SortUtil.Sort { /K) b0QX  
GB?#1|,  
/* ^-GX&ODa  
* (non-Javadoc) x{>Y$t]  
* @>2rz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xm|4\H&Bg  
*/ df6&Nu;4L  
public void sort(int[] data) { M/a/H=J  
int temp; =t$mbI   
for (int i = 0; i < data.length; i++) { 4Qel;  
int lowIndex = i; d._gH#&v  
for (int j = data.length - 1; j > i; j--) { !X%!7wsc  
if (data[j] < data[lowIndex]) { +?Jk@lE<  
lowIndex = j; 9c{%m4  
} sNfb %r  
} qTHg[sME  
SortUtil.swap(data,i,lowIndex); ZBR^[OXO  
} CS5jJi"pD3  
} {Okik}Oh  
yp{F 8V 8  
} s.;KVy,=Bu  
7G[ GHc>  
Shell排序: ZqbM%(=z(`  
N~}v:rK>g  
package org.rut.util.algorithm.support; #/t>}lc  
$^=jPk]+  
import org.rut.util.algorithm.SortUtil; :+ 9Ft>  
y- <PsP-I  
/** aI{@]hCo  
* @author treeroot CDW(qq-zD  
* @since 2006-2-2 IEoR7:  
* @version 1.0 |g\.5IM#W  
*/ 7 Mki?EG  
public class ShellSort implements SortUtil.Sort{ |:=b9kv  
\e:FmG  
/* (non-Javadoc) k[ffs}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t6bWSz0  
*/ Fm$n@R bX  
public void sort(int[] data) { =*:[(Py1  
for(int i=data.length/2;i>2;i/=2){ *T>#zR{  
for(int j=0;j insertSort(data,j,i); FJjF*2 .  
} bpF@}#fT  
} DtF![0w/  
insertSort(data,0,1); <S8I"8{Mb  
} &Qq/Xi,bZ  
;sL6#Go?V  
/** GrLM${G  
* @param data 8 g# Y  
* @param j cB|Cy{%  
* @param i 7<R6T9g  
*/ S0.- >"L  
private void insertSort(int[] data, int start, int inc) { a(x.{}uG,  
int temp; cu479VzPx:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \}u7T[R=`  
} M=\d_O#;Z  
} 3)C6OF>7  
} lk*0c {_L  
'#McY'.D T  
} !X\sQNp  
DV7<n&P  
快速排序: <nOuyGIZ  
AF*ni~  
package org.rut.util.algorithm.support; PtRj9TT  
 EbBv}9g  
import org.rut.util.algorithm.SortUtil; :\1rQT  
}j5R@I6P  
/** Io,/ +#|  
* @author treeroot mJGO)u&  
* @since 2006-2-2 +Dq|l}  
* @version 1.0 D y`W5_xSz  
*/ e-%7F]e  
public class QuickSort implements SortUtil.Sort{ )T.pjl  
q19k<BqR  
/* (non-Javadoc) jlRl2 #"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v|4STR  
*/ ~zE 1'  
public void sort(int[] data) { DJ1XN pm  
quickSort(data,0,data.length-1); Ks49$w<  
} DGa#d_I  
private void quickSort(int[] data,int i,int j){ @b ::6n/u  
int pivotIndex=(i+j)/2; "%.|n|  
file://swap c ,h.`~{  
SortUtil.swap(data,pivotIndex,j); bK_0NrXP  
QoW ( tM  
int k=partition(data,i-1,j,data[j]); *tTP8ZCQ[  
SortUtil.swap(data,k,j); g( ]b\rj  
if((k-i)>1) quickSort(data,i,k-1); $n=W2WJ6f  
if((j-k)>1) quickSort(data,k+1,j); EFa{O`_@U  
;_?zB NW  
} S 0R8'Y  
/** ;H7EB`  
* @param data di]$dl|Wi  
* @param i N<L$gw+)$D  
* @param j L<f-Ed9|  
* @return CbTf"pl  
*/ sow bg<D  
private int partition(int[] data, int l, int r,int pivot) { \S=XIf  
do{ pTa'.m  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =,&u_>Dp  
SortUtil.swap(data,l,r); q=P f^Xp  
} fap|SMGt  
while(l SortUtil.swap(data,l,r); th.M.jas  
return l; ~u_K& X  
} g)=V#Bglv  
$Qn& jI38  
} 5S&aI{;9<  
7j@^+rkr3f  
改进后的快速排序: M,b<B_$  
v;)BVv  
package org.rut.util.algorithm.support; +G5'kYzJ  
:@:g*w2K  
import org.rut.util.algorithm.SortUtil; H/cs_i  
UlK/x"JDv  
/** R19'| TJ  
* @author treeroot G[|3^O>P  
* @since 2006-2-2 +<)tql*  
* @version 1.0 !&@2  
*/ 1k!D0f3qb  
public class ImprovedQuickSort implements SortUtil.Sort { ,3G$`  
mcvDxjk,h  
private static int MAX_STACK_SIZE=4096; -0A@38, }  
private static int THRESHOLD=10; LTg?5GwD\j  
/* (non-Javadoc) <2n'}&F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QH& %mr.S  
*/ 4qqF v?O[r  
public void sort(int[] data) { qv.[k<~a>  
int[] stack=new int[MAX_STACK_SIZE]; S/a/1 n$ U  
G!AICcP^  
int top=-1; Zn?8\  
int pivot; F?!FD>L{`  
int pivotIndex,l,r; uEBQoP2  
-sP9E|/:'3  
stack[++top]=0; CoKiQUW  
stack[++top]=data.length-1; CKJAZ2  
g+:$X- r  
while(top>0){ ?(]a*~rx  
int j=stack[top--]; t$aVe"uM  
int i=stack[top--]; D5=C^`$2  
j6`6+W=S(  
pivotIndex=(i+j)/2; ! &Z*yH  
pivot=data[pivotIndex]; QxKAXq@)i  
AzZi{Q ?  
SortUtil.swap(data,pivotIndex,j); X>2? `8M  
ggMUdlU  
file://partition /#29Y^Z)=  
l=i-1; ]OUD5T  
r=j; wbBE@RU>!  
do{ c qv .dC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); VIetcs  
SortUtil.swap(data,l,r); : g&>D#{  
} C:Vv!u  
while(l SortUtil.swap(data,l,r); &Y{F? c^  
SortUtil.swap(data,l,j);  /; +oz  
e!6eZ)l  
if((l-i)>THRESHOLD){ ;.\g-`jb  
stack[++top]=i; DQcWq'yY^  
stack[++top]=l-1; Tu==49  
} n>n"{!  
if((j-l)>THRESHOLD){ V_jiOT!  
stack[++top]=l+1; L+Eu d  
stack[++top]=j; *jGPGnSo  
} }lH;[+u3  
[ ynuj3G V  
} Ohc^d"[7  
file://new InsertSort().sort(data); |%-YuD  
insertSort(data); "8FSA`>=  
} 3zbXAR*  
/** UB a-  
* @param data I`3d;l;d  
*/ iFSJ4 W(  
private void insertSort(int[] data) { %Sc=_%6  
int temp; [~t yDLC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TFYw  
} c+H)ed>  
} <W?WUF  
} (,shiK[5f  
<M=';h^w2  
} ?x'w~;9R/  
FQ1arUOFW,  
归并排序: {|Bd?U;  
_Cj(fFL  
package org.rut.util.algorithm.support; p x0Sy|  
!KAsvF,j  
import org.rut.util.algorithm.SortUtil; 7pz\ScSe  
w?*j dwh,'  
/** i]dz}=j'  
* @author treeroot eJW[ ]!  
* @since 2006-2-2 3hLqAj  
* @version 1.0 4Mi~1iZj  
*/ &lUNy L  
public class MergeSort implements SortUtil.Sort{ dt<~sOT3s  
Rh[Ibm56  
/* (non-Javadoc) W\%q} q2?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G@B*E%$9  
*/ h^Qh9G0dn  
public void sort(int[] data) { YQ+^  
int[] temp=new int[data.length]; B2Qp}  
mergeSort(data,temp,0,data.length-1); 6W$rY] h!  
} VE*j*U j  
:,47rN,qa  
private void mergeSort(int[] data,int[] temp,int l,int r){ gd_ ^  
int mid=(l+r)/2; Jl_~_Z  
if(l==r) return ; R2CQXhiJ  
mergeSort(data,temp,l,mid); `/0u{[  
mergeSort(data,temp,mid+1,r); z(rK^RT  
for(int i=l;i<=r;i++){ zWb -pF|  
temp=data; z,avQR&  
} X% X$Y6  
int i1=l; l0:5q?g  
int i2=mid+1; =},{8fZ4  
for(int cur=l;cur<=r;cur++){ F;-90w  
if(i1==mid+1) e62y  
data[cur]=temp[i2++]; R3Ee%0QK  
else if(i2>r) HS7_MGU  
data[cur]=temp[i1++]; 4~Dax)  
else if(temp[i1] data[cur]=temp[i1++]; -p]>Be+^x  
else jWSb5#Pw  
data[cur]=temp[i2++]; Qm; BUG]  
} Ok*Z  
} 2kVp_=c  
t$5jx  
} eG4>d^`c  
06jMj26!  
改进后的归并排序: .&PzkqWZ  
5j`v`[B;  
package org.rut.util.algorithm.support; aHC%19UN  
EX+,:l\^  
import org.rut.util.algorithm.SortUtil; R^6Zafp  
G5;V.#"Z[  
/** m!:.>y  
* @author treeroot ;NP[_2|-,  
* @since 2006-2-2 `s%QeAde  
* @version 1.0 (A uPZ  
*/ {+Sq<J_`M  
public class ImprovedMergeSort implements SortUtil.Sort {  NpR6  
nj  
private static final int THRESHOLD = 10; -X8eabb  
A0>x9XSkJ  
/* N+J>7_k   
* (non-Javadoc) \K}aQKB/j  
* :u-.T.zZl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )2V@p~k?  
*/ LABNj{=D!  
public void sort(int[] data) { ?+\E3}:  
int[] temp=new int[data.length]; r[!(?%>j  
mergeSort(data,temp,0,data.length-1); :<%vE!$  
} n_9x"m$  
:Eo8v$W\RB  
private void mergeSort(int[] data, int[] temp, int l, int r) { 8gI\zgS  
int i, j, k; Ji A'BEJN  
int mid = (l + r) / 2; Q;wB{vr$  
if (l == r) KuXkI;63J>  
return; CKd3w8;  
if ((mid - l) >= THRESHOLD) Dft%ip2  
mergeSort(data, temp, l, mid); !M^\f N1  
else c3W BALdh  
insertSort(data, l, mid - l + 1); "lrA%~3%[P  
if ((r - mid) > THRESHOLD) ]7vf#1i<  
mergeSort(data, temp, mid + 1, r); uLK(F B  
else R&Ci/  
insertSort(data, mid + 1, r - mid); 1.0J2nZpt  
v|&s4x?D  
for (i = l; i <= mid; i++) { J3IRP/*z  
temp = data; .CS v|:'1  
} t 7^D-l  
for (j = 1; j <= r - mid; j++) { ~6HDW  
temp[r - j + 1] = data[j + mid]; -l[jEJS}  
} kFLT!k  
int a = temp[l]; @n@g)`  
int b = temp[r]; y\z > /q  
for (i = l, j = r, k = l; k <= r; k++) { ERC<Dd0  
if (a < b) { lD3)TAW@o  
data[k] = temp[i++]; Ay%:@j(E  
a = temp; <T4(H[9B  
} else { QptOQ3!  
data[k] = temp[j--]; 1R^4C8*B  
b = temp[j]; M=[th  
} '=#5(O%pp  
} jb3.W  
} uP6-cs  
2-s7cXs  
/** GoD ?KC  
* @param data H&K3"Ulw  
* @param l W_m!@T"@H  
* @param i ev"M;"y  
*/ t'aSF{%  
private void insertSort(int[] data, int start, int len) { qiU5{}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?K<Z kYw?  
} @h(!<Ux_  
} )S Q('vwg  
} qHJ'1~?q  
} g}r^Xzd;  
?l 9=$'  
堆排序: 4=s9A  
$iHoOYx]<  
package org.rut.util.algorithm.support; @'gl~J7  
n^Vxi;F  
import org.rut.util.algorithm.SortUtil; L=m:/qQL  
_.=`>%,  
/** bg1un@%!l  
* @author treeroot }$:#+ (17  
* @since 2006-2-2 ;dOs0/UM&  
* @version 1.0 ns26$bU  
*/ k9&@(G[K3  
public class HeapSort implements SortUtil.Sort{ [Auc*@  
6ZOAmH fs  
/* (non-Javadoc) eJ:Yj ~X`<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H/`G  
*/ bP03G =`6w  
public void sort(int[] data) { `Hd9\;NJ  
MaxHeap h=new MaxHeap(); doH2R @  
h.init(data); B.6`cM^  
for(int i=0;i h.remove(); H!. ZH(asY  
System.arraycopy(h.queue,1,data,0,data.length); jN{Zw*  
} Qg>0G%cXU  
!EM#m@kZ{  
private static class MaxHeap{ KGQC't  
oXbI5XY)wb  
void init(int[] data){ C Oa.xyp  
this.queue=new int[data.length+1]; OM{Dq|  
for(int i=0;i queue[++size]=data; 0 {,h.:  
fixUp(size); bKByU{t  
} 6e/7'TYwT  
} wibwyzo  
/.2qWQH  
private int size=0; /W0E(8:C)  
\ =Nm5:  
private int[] queue; K9*IA@xL  
y<v|X2  
public int get() { 6+)x7g1PL  
return queue[1]; eK *W =c#@  
} jiq2x\\!  
-)6;0  
public void remove() { hMWo\qM  
SortUtil.swap(queue,1,size--); -~} tq]  
fixDown(1); dEG ]riO  
} `{<JC{yc?  
file://fixdown 2md.S$V$,  
private void fixDown(int k) { iU XM( ]  
int j; 'QnW9EHLF  
while ((j = k << 1) <= size) { %}ixgs7*c0  
if (j < size %26amp;%26amp; queue[j] j++; N2% :h;tf  
if (queue[k]>queue[j]) file://不用交换 4@mso+tk  
break; <uC<GDO  
SortUtil.swap(queue,j,k); 'xk1o,;  
k = j; _6L H"o 3  
} #?Wo <]i  
} $Ba`VGP>)3  
private void fixUp(int k) { cPJ7E  
while (k > 1) { d{3I.$ThH  
int j = k >> 1; 99EX8  
if (queue[j]>queue[k]) l<Lz{)OR  
break; }|,EU!nDi  
SortUtil.swap(queue,j,k); ^^eV4Y5`+  
k = j; t%:G|n Sz  
} 4Lw'v:(  
} | 4 `.#4  
38"cbHE3  
} m3B \)2B  
TRo4I{L6S  
} ze ?CoDx2  
5/k)\`  
SortUtil: h>.9RX &  
;NBT 4  
package org.rut.util.algorithm; F46O!xb%  
Y6+k9$h  
import org.rut.util.algorithm.support.BubbleSort; o3fR3P%$  
import org.rut.util.algorithm.support.HeapSort; Okk hP  
import org.rut.util.algorithm.support.ImprovedMergeSort; `k!UjO72  
import org.rut.util.algorithm.support.ImprovedQuickSort; lR, G;  
import org.rut.util.algorithm.support.InsertSort; -;f+; M  
import org.rut.util.algorithm.support.MergeSort; 6S)$3Is  
import org.rut.util.algorithm.support.QuickSort; coSTZ&0  
import org.rut.util.algorithm.support.SelectionSort; Y5Ft96o))x  
import org.rut.util.algorithm.support.ShellSort; aK!xRnY  
sBbL~ce50?  
/** [O [FCn  
* @author treeroot cK/PQsMP  
* @since 2006-2-2 3b,=  
* @version 1.0 +A&EKk%$ |  
*/ Dxz5NW4  
public class SortUtil { e W9)@nVJ  
public final static int INSERT = 1; 0@:Y>qVa  
public final static int BUBBLE = 2; Y7*'QKz2  
public final static int SELECTION = 3; xcsFODx~  
public final static int SHELL = 4; tnA_!$Y a  
public final static int QUICK = 5; 1k*n1t):  
public final static int IMPROVED_QUICK = 6; DS.39NY  
public final static int MERGE = 7; -`,~9y;tx  
public final static int IMPROVED_MERGE = 8; (R,NV3m?w  
public final static int HEAP = 9; _,11EeW@  
|dW2dQ  
public static void sort(int[] data) { @"jmI&hYn  
sort(data, IMPROVED_QUICK); dCW0^k  
} k\Yu5)  
private static String[] name={ 6JUav."`~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zojuH8  
}; z<FV1niE  
_-g-'Hr+N  
private static Sort[] impl=new Sort[]{ .LWOM8)  
new InsertSort(), |TC3*Y  
new BubbleSort(), 0G~%UYB-  
new SelectionSort(), g%@]z8L  
new ShellSort(), G~Sy&XJuq  
new QuickSort(), ;a#}fX  
new ImprovedQuickSort(), %ZJ),9+  
new MergeSort(), o'9OPoof:.  
new ImprovedMergeSort(), e);bF>.~  
new HeapSort() B]&Lh~Im  
}; -='8_B/75  
xc:`}4  
public static String toString(int algorithm){ CnM+HN30o  
return name[algorithm-1]; 5<'n  
} ~}hba3&b;#  
Q1P,=T@  
public static void sort(int[] data, int algorithm) { }rFsU\]:q  
impl[algorithm-1].sort(data); ~YR <SV\{  
} @5<]W+jk4  
k~'?"'  
public static interface Sort { }I` ku.@5  
public void sort(int[] data); ; 'b!7sMO~  
} 3fbD"gL  
9Bbm7Gd  
public static void swap(int[] data, int i, int j) { gxBl1  
int temp = data; w>/pQ6=OFR  
data = data[j]; GU;TK'Yy?  
data[j] = temp; QZ:]8MHl]  
} M]%!n3Fb  
} m!FM+kge  
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