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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。 JnC$}amr  
插入排序: |I; tBqN{u  
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package org.rut.util.algorithm.support; j41)X'MgJ  
M4%u~Z:4h+  
import org.rut.util.algorithm.SortUtil; uc0 1{t0,  
/** bfjC:"!H  
* @author treeroot 0F"W~OQ6  
* @since 2006-2-2 ~&zrDj~FI  
* @version 1.0 MCPVql`+`q  
*/ }]dK26pX  
public class InsertSort implements SortUtil.Sort{ &E{CQ#k  
8$!&D&v  
/* (non-Javadoc) Qqp_(5S|>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4*j6~  
*/ |@84l  
public void sort(int[] data) { l|, Hj  
int temp; NNKI+!vg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z&f@)j  
} O9+Dd%_KS#  
} h8nJt>h  
} *w H.]$  
I:~KF/q  
} goE \C  
vb o| q[z  
冒泡排序: 3YKJN4  
xj6@85^  
package org.rut.util.algorithm.support; >GbCRN~  
3q$[r_   
import org.rut.util.algorithm.SortUtil; &.m.ruab  
fGeDygV^`  
/** y4@zi"G  
* @author treeroot E{LLxGAEZ  
* @since 2006-2-2 oFO)28Btv  
* @version 1.0 r JvtE}x1  
*/ OouIV3  
public class BubbleSort implements SortUtil.Sort{ u[{j;l(  
ce3UB~Q  
/* (non-Javadoc) fwkklg^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =:w]EpH"  
*/ `u<\ 4&W  
public void sort(int[] data) { G_vcuCHm  
int temp; _1c0pQ^}3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?S*Cvr+=4  
if(data[j] SortUtil.swap(data,j,j-1); #[ H4`hZ  
} &oz^dlw  
} Nldy76|g  
} u<g0oEs)  
} r<%ua6@  
H^VNw1.   
} S7B7'[ru  
>/]` f8^  
选择排序: Io(*_3V)B  
2`|gnVw  
package org.rut.util.algorithm.support; H%nA"-  
D]?eRO9'  
import org.rut.util.algorithm.SortUtil; f3>L/9[[<P  
y ;\m1o2  
/** 1BjMVMH  
* @author treeroot tj' xjX  
* @since 2006-2-2 VRb+-T7"  
* @version 1.0 v)f;dq^z-  
*/ Jbv[Ql#  
public class SelectionSort implements SortUtil.Sort { R&-Vm3mc3  
 &x":  
/* ?Z0NHy;5  
* (non-Javadoc) \80W?9qj  
* r_x|2 A oO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~E8L,h~  
*/ #J Ay  
public void sort(int[] data) { wHT]&fZ  
int temp; {4 y#+[  
for (int i = 0; i < data.length; i++) {  ?W3l  
int lowIndex = i; mTj ?W$+r  
for (int j = data.length - 1; j > i; j--) { H@'f=Y*D  
if (data[j] < data[lowIndex]) {  &Hi;>  
lowIndex = j; %W(/W9B$/F  
} -MK9IO]i  
} f?qp*  
SortUtil.swap(data,i,lowIndex); {^T_m)|n  
} j;MQ_?"iN  
} L0Ycf|[s,  
+W%3VV$  
} % tE#%;Z  
4:I'zR5  
Shell排序: oSl@EI  
?mA%`*=q  
package org.rut.util.algorithm.support; nI es}n:  
TwI'}J|w  
import org.rut.util.algorithm.SortUtil; W"v"mjYud  
 z@8W  
/** /$U< S"  
* @author treeroot W=S<DtG2  
* @since 2006-2-2 *U mWcFoF  
* @version 1.0 zR!p-7_w  
*/ jU9\BYUg  
public class ShellSort implements SortUtil.Sort{ )Jaq5OMA/  
iLbf:DXK(  
/* (non-Javadoc) n/6qc3\5i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |>~pA}  
*/ 4G_At  
public void sort(int[] data) { 3FgTM(  
for(int i=data.length/2;i>2;i/=2){ CX}==0od  
for(int j=0;j insertSort(data,j,i); $<s;YhM:u)  
} J Q% D6b  
} 7C>5XyyJ  
insertSort(data,0,1); L)z`  
} 1EemVZdY  
+B&,$ceyaJ  
/** '* eeup  
* @param data b6?&h:{k  
* @param j (MGYX_rD  
* @param i EY^+ N>  
*/ 1=Z, #r  
private void insertSort(int[] data, int start, int inc) { rizWaw5E!8  
int temp; 0,]m.)ws  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f.G"[p  
} Js'j}w  
} tJvs ?eZ)  
} _'0C70  
O>3f*Cc  
} pGdFeEkB/  
"qdEu KI  
快速排序: %F}i2!\<L  
l<)k`lrMX4  
package org.rut.util.algorithm.support; od-yVE&  
2r"J"C  
import org.rut.util.algorithm.SortUtil; P^57a?[`  
' 4.T1i,  
/** f 0r?cZ  
* @author treeroot AF\gB2^  
* @since 2006-2-2 w(oi6kg  
* @version 1.0 })y B2Q0  
*/ gLK_b;:  
public class QuickSort implements SortUtil.Sort{ ?J,K[.z  
oe*CZ  
/* (non-Javadoc) P[%nD cB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) REGk2t.L  
*/ -R-yr.$j*  
public void sort(int[] data) { \~> .NH-  
quickSort(data,0,data.length-1); _J X>#h  
} `{1~]?-&  
private void quickSort(int[] data,int i,int j){ @q"HZO[  
int pivotIndex=(i+j)/2; y#{v\h Cz  
file://swap _KJ!C!  
SortUtil.swap(data,pivotIndex,j); n+57# pS7  
NHQi_U  
int k=partition(data,i-1,j,data[j]); rK[;wD<  
SortUtil.swap(data,k,j); t Uk)S  
if((k-i)>1) quickSort(data,i,k-1); b!JrdJO,DP  
if((j-k)>1) quickSort(data,k+1,j); 'Bwv-J  
;R([w4[~  
} 3_ ZlZ_Tq  
/** [tk6Kx8a  
* @param data M.9w_bW]#D  
* @param i cBtQ2,<6  
* @param j uI\6":/u  
* @return WXQ+`OH7  
*/ %+iAL<S  
private int partition(int[] data, int l, int r,int pivot) { \YPv pUg  
do{ _P9*78  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <!q_C5>XJ  
SortUtil.swap(data,l,r); oV'G67W  
} I+/fX0-Lib  
while(l SortUtil.swap(data,l,r); :E.T2na  
return l; fb8)jd'~}O  
} !;Vqs/E  
X?.tj Z,  
} w/e?K4   
x c|1?AFj  
改进后的快速排序: E5yn,-GyE0  
J^-a@' `+  
package org.rut.util.algorithm.support; 8`z  
DJb9] ,=a  
import org.rut.util.algorithm.SortUtil; # TZ`   
o]DYS,v  
/** 30W.ks5(  
* @author treeroot WOQ>]Z  
* @since 2006-2-2 E?FUr?-[  
* @version 1.0 *)L~1;7j>  
*/ SQJ +C%   
public class ImprovedQuickSort implements SortUtil.Sort { Mq='|0,  
(SMk !b]}  
private static int MAX_STACK_SIZE=4096; srhI%Zj  
private static int THRESHOLD=10; dVSQG947i:  
/* (non-Javadoc) Pq, iR J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~?:>=x  
*/ V8rS~'{\  
public void sort(int[] data) { "(mF5BE-E  
int[] stack=new int[MAX_STACK_SIZE]; p,BoiYdi  
"?^#+@LV  
int top=-1; M<r]a{Yv  
int pivot; Gkm {b[  
int pivotIndex,l,r; W~FU!C?]  
*|ef#-|D  
stack[++top]=0; 1&RB=7.h  
stack[++top]=data.length-1;  Vqr]Ui  
P4:Zy;$v!  
while(top>0){ 0),fY(D2T  
int j=stack[top--]; DWS#q|j`"  
int i=stack[top--]; YjiMUi\V  
2U3e!V  
pivotIndex=(i+j)/2; eV"s5X[$  
pivot=data[pivotIndex]; (}rBnD  
HWFL u  
SortUtil.swap(data,pivotIndex,j); s Fx0  
9)>+r6t  
file://partition ECk3Da  
l=i-1; ]xGpN ]u  
r=j;  niyI$OC  
do{ Za]~[F  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vX_;Y#uD  
SortUtil.swap(data,l,r); ?R_fg  
} UrO& K]Z  
while(l SortUtil.swap(data,l,r); S`Z[MNY  
SortUtil.swap(data,l,j); NA$%Up  
ipE|)Ns  
if((l-i)>THRESHOLD){ [?bq4u`  
stack[++top]=i; U6.hH%\}@  
stack[++top]=l-1; v'm-A d+4t  
} yxi&80$  
if((j-l)>THRESHOLD){ @Z5,j)  
stack[++top]=l+1; xXfv({  
stack[++top]=j; k2(k0HFR  
} h.wffk,  
'e_e*.z3  
} 4X!4S6JfB  
file://new InsertSort().sort(data); tt|P-p-  
insertSort(data); -qBdcbi|x)  
} -s0\4  
/** > Edsanx  
* @param data 86>@.:d  
*/ sN K^.0  
private void insertSort(int[] data) { CF:L#r  
int temp; S f6%A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z<%dWz  
} "ruYMSpU  
} 3 2"f'{  
} T[<554  
raZkH8  
} _5S||TuNS  
[930=rF*  
归并排序: wYLodMaYH  
l[u17,]S  
package org.rut.util.algorithm.support; 8@b`a]lgrd  
putRc??o;  
import org.rut.util.algorithm.SortUtil; !MVf(y$  
x.$cP  
/** ttls.~DG  
* @author treeroot wp83E,  
* @since 2006-2-2 Bw~jqDZ}|  
* @version 1.0 L9oLdWa(C  
*/ %`~+^{Wp  
public class MergeSort implements SortUtil.Sort{ x4h.WDT$  
9{e/ V)  
/* (non-Javadoc) >cpv4Pgm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $@l=FV_;  
*/ yo8mfH_,  
public void sort(int[] data) { s>W :vV@  
int[] temp=new int[data.length]; *U}-Y*  
mergeSort(data,temp,0,data.length-1); eSHsE 3}h  
} {|<yZ,,p  
7rYBFSp  
private void mergeSort(int[] data,int[] temp,int l,int r){ =oM#]M'G+(  
int mid=(l+r)/2; ^nK7&]rK  
if(l==r) return ; maa$kg8U*!  
mergeSort(data,temp,l,mid); KoA+Vv9  
mergeSort(data,temp,mid+1,r); 7w]3D  
for(int i=l;i<=r;i++){ N|%r5%  
temp=data; =k,?+h~  
} l`uMtv/Wp  
int i1=l; + )z5ai0m  
int i2=mid+1; X|&H2y|*7  
for(int cur=l;cur<=r;cur++){ YWJ$Pp  
if(i1==mid+1) q<Qjc  
data[cur]=temp[i2++]; irvd>^&jDC  
else if(i2>r) \ueCbfV!Z4  
data[cur]=temp[i1++]; Jd?qvE>Pp  
else if(temp[i1] data[cur]=temp[i1++]; 59p'U/|  
else IG7,-3  
data[cur]=temp[i2++]; vxug>2  
} =qbN?a/?2  
} VFMn"bYOB  
'p78^4'PL  
} )Gk?x$pY@  
vexF|'!}0#  
改进后的归并排序: EZzR"W/  
f*A B Im  
package org.rut.util.algorithm.support; mU  
3ZI:EZ5  
import org.rut.util.algorithm.SortUtil; cNN0-<#c  
fUfd5W1"  
/** aOd|;Z  
* @author treeroot KJv%t_4'F  
* @since 2006-2-2 !@wUAR Q  
* @version 1.0 {$5g29  
*/ w{u,YM(Q  
public class ImprovedMergeSort implements SortUtil.Sort { f$9|qfW'$  
+>%51#2.Q  
private static final int THRESHOLD = 10; J}+N\V~  
V;^N:I\js  
/* ?3qp?ea  
* (non-Javadoc) >56fa6=3@  
* WW+ F9~S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XR 3 dG:  
*/ >I<}:=   
public void sort(int[] data) { I3b*sx$  
int[] temp=new int[data.length]; uMpuS1  
mergeSort(data,temp,0,data.length-1); US=K}B=g  
} K :kb&W  
~kj96w4eAR  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?m+];SJk  
int i, j, k; wjZ Q.T!  
int mid = (l + r) / 2; Gy;Fe=  
if (l == r) zGNW5S9G  
return; mlLqQ<  
if ((mid - l) >= THRESHOLD) 'n1$Y%t  
mergeSort(data, temp, l, mid); .{ZJywE<  
else J7C?Z  
insertSort(data, l, mid - l + 1); HG< z,gE 2  
if ((r - mid) > THRESHOLD) -T i<H9OV  
mergeSort(data, temp, mid + 1, r); C9!FnvH  
else `p1B58deC  
insertSort(data, mid + 1, r - mid); k Jw Pd;%  
tN_=&|{WE4  
for (i = l; i <= mid; i++) { tIV{uVM[|D  
temp = data; =tY%`e  
} lkly2|wA  
for (j = 1; j <= r - mid; j++) { BlZB8KI~  
temp[r - j + 1] = data[j + mid]; ~c] q:pU2  
} r[T(R9k  
int a = temp[l]; _Pa@%/  
int b = temp[r]; \jV2":[% c  
for (i = l, j = r, k = l; k <= r; k++) { a(*"r:/lD  
if (a < b) { )f8;ze  
data[k] = temp[i++]; &j ; 91wEn  
a = temp; 7E#h(bt j  
} else { ^i2>Ax&T  
data[k] = temp[j--]; EVBOubV  
b = temp[j]; :-<30LS $  
} n qx0#_K-E  
} 63_#*6Pv28  
} Ayv:Pv@  
V6_5v+n  
/** );y ZyWDV  
* @param data nd,\<}uP9  
* @param l Y<kz+d,C  
* @param i W(Md0*   
*/ :8`$BbV  
private void insertSort(int[] data, int start, int len) { B u%%O8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t#8QyN  
} ZMr[:,Jp  
} EkRx/  
} PC+Soh*  
} ?Q+*[YEJ5  
KKb7dZbt<  
堆排序: zY@0R`{@p  
nk_X_y  
package org.rut.util.algorithm.support; GA` bWl  
r..f$FF)\  
import org.rut.util.algorithm.SortUtil; 9o6[4Q}  
GUD]sXSj  
/** D| <_96_m  
* @author treeroot ZR%$f-  
* @since 2006-2-2 /ueOc<[8"  
* @version 1.0 (UhJ Pco"  
*/ @8w5Oudvx  
public class HeapSort implements SortUtil.Sort{ vJct)i  
v@ qDR|?^  
/* (non-Javadoc) =8TBkxG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;I80<SZ  
*/ J>G'H)  
public void sort(int[] data) { EAm31v C  
MaxHeap h=new MaxHeap(); &OE-+z  
h.init(data); P*>?/I`G  
for(int i=0;i h.remove(); fVa z'R  
System.arraycopy(h.queue,1,data,0,data.length); k h*WpX  
} /*BK6hc  
%Ie,J5g5  
private static class MaxHeap{ ]q4LN o  
ZREy I(_  
void init(int[] data){ {Y=k`t,  
this.queue=new int[data.length+1]; AZ^>osr  
for(int i=0;i queue[++size]=data; qmGHuQVe  
fixUp(size); AS:k&t  
}  f<$*,P  
} ( xzruI5P  
/.rj\,  
private int size=0; ,3eN&  
}.U(Gxu$  
private int[] queue; OC-d5P  
wu11)HFL|z  
public int get() { uOKD#   
return queue[1]; [Mc Hl1a  
} H^`J(J+  
])bgUH  
public void remove() { #Tag"b`  
SortUtil.swap(queue,1,size--); f\=,_AQ  
fixDown(1); ZAeJTCCk  
} ]9'F<T= $_  
file://fixdown v0(}"0  
private void fixDown(int k) { VKu_ l  
int j; RhT:]  
while ((j = k << 1) <= size) { =h=-&DSA  
if (j < size %26amp;%26amp; queue[j] j++; `1Md1e:J  
if (queue[k]>queue[j]) file://不用交换 sh0x<_  
break; :RZ'_5P[If  
SortUtil.swap(queue,j,k); "\rO}(gC;`  
k = j; {M=B5-  
} B-L@ 0gH  
} Q>;Aq!mr=  
private void fixUp(int k) { W>Pcj EI  
while (k > 1) { 4T"L#o1  
int j = k >> 1; r8N)]Hs ZH  
if (queue[j]>queue[k]) Yt:%)&50}-  
break;  r3OtQ  
SortUtil.swap(queue,j,k); `*yOc6i]  
k = j; _Gb 7n5p  
} ,1!Y!,xy  
} W np[8IEU  
X|g5tnsj`  
} qC& xuu|  
4DP<)KX  
} |a /cw"  
%iYro8g!,  
SortUtil: +!`$(  
Ln+ k_  
package org.rut.util.algorithm; *!Gb_!98  
;[g~h |{6  
import org.rut.util.algorithm.support.BubbleSort; A,4} $-7  
import org.rut.util.algorithm.support.HeapSort; =z<sx2#*  
import org.rut.util.algorithm.support.ImprovedMergeSort; `'mRGz7t  
import org.rut.util.algorithm.support.ImprovedQuickSort; XgKYL<k?S  
import org.rut.util.algorithm.support.InsertSort; DIvxut  
import org.rut.util.algorithm.support.MergeSort; ?v F8 y;Jh  
import org.rut.util.algorithm.support.QuickSort; (r'NB  
import org.rut.util.algorithm.support.SelectionSort; )PkGT~3I  
import org.rut.util.algorithm.support.ShellSort; )[&j&AI  
Dk")/ ib  
/** j E5=e</  
* @author treeroot nSZp,?^  
* @since 2006-2-2 Kuk@x.~0m  
* @version 1.0 yTe25l{QaF  
*/ fHI@' '0  
public class SortUtil { =M4wP3V/  
public final static int INSERT = 1; K&dc< 4DC  
public final static int BUBBLE = 2; ,y/m5-D!  
public final static int SELECTION = 3; &@2`_%QtA  
public final static int SHELL = 4; @Y(7n/*  
public final static int QUICK = 5; ]^a{?2 ei  
public final static int IMPROVED_QUICK = 6; KO}TCa  
public final static int MERGE = 7; *l0i}"T^_  
public final static int IMPROVED_MERGE = 8; GIR12%-EO  
public final static int HEAP = 9; 1.~^QH\p?3  
.>y3`,0h  
public static void sort(int[] data) { +_f813$C  
sort(data, IMPROVED_QUICK);  Bv%dy[I  
} 5$$]ZMof  
private static String[] name={ A9[D.W9>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cj[%.M5iBA  
}; H66~!J0;a  
?ia O6HD  
private static Sort[] impl=new Sort[]{ N a.e1A&?j  
new InsertSort(), uIJ zz4  
new BubbleSort(), aKRnj!4z  
new SelectionSort(), Pb@$RAU6 3  
new ShellSort(), ;D[I/U  
new QuickSort(), (t,|FkVLV  
new ImprovedQuickSort(), $uK[[k~=S  
new MergeSort(), E`iE]O  
new ImprovedMergeSort(), lx82:_  
new HeapSort() y] $- :^  
}; ,qdZ6bv,]|  
H a`V"X{}  
public static String toString(int algorithm){ XR#?gx.}  
return name[algorithm-1]; ty9(mtH+  
} aprgThoD  
@XKVdtG  
public static void sort(int[] data, int algorithm) { 3);W gh6  
impl[algorithm-1].sort(data); 'w\Gd7E  
} f_QZ ql  
+gb"} cN  
public static interface Sort { {?IUf~<  
public void sort(int[] data); 5*$z4O:Aa  
} ZQ#AEVI,  
E `%*lGu_  
public static void swap(int[] data, int i, int j) { "fd'~e$S#  
int temp = data; 6b4]dvl_  
data = data[j]; j2%#xZ{33  
data[j] = temp; ]jP 0Z#  
} v #Q(g/^  
} B :1r;8{j  
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