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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。 yl>V '  
插入排序: X#bK.WN$  
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package org.rut.util.algorithm.support; F ka^0  
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import org.rut.util.algorithm.SortUtil; *?2aIz"  
/** 00?_10x)  
* @author treeroot \i*QKV<  
* @since 2006-2-2 ,eI2#6w|C  
* @version 1.0 rjFIK`_w  
*/ S~~G0GiW  
public class InsertSort implements SortUtil.Sort{ ,G q?  
e5g# a}  
/* (non-Javadoc) EpX.{B@B_[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ju jhK'\  
*/ 4=G)j+RCH  
public void sort(int[] data) { $ ]ew<j  
int temp; y@#JzfY?Hr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %j.B/U$  
} ^V1.Y  
} \iBEyr]  
} K@JGGgrE`!  
B_gzpS]  
} kqebU!0-  
lUL6L 4m  
冒泡排序: ?5N7,|K)  
Hwz.5hV"  
package org.rut.util.algorithm.support; eHQS\n  
:>:F6Db"U  
import org.rut.util.algorithm.SortUtil; FZt a  
d@$]/=%  
/** p;y\%i_  
* @author treeroot Y#VtZTcT  
* @since 2006-2-2 CAbeb+O  
* @version 1.0 9J*M~gKbz  
*/ .T2P%Jn.  
public class BubbleSort implements SortUtil.Sort{ pR3@loFQ`o  
>@Nn_d  
/* (non-Javadoc) UJ/=RBfkJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wWVLwp4-  
*/ %nRz~3X|+v  
public void sort(int[] data) { 9JDdOjqo  
int temp; ]4uY<9VL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y<]A 5cm  
if(data[j] SortUtil.swap(data,j,j-1); w$aiVOjgT  
} X6T*?t3!9[  
} ^$N}[1   
} U,tl)(!@Q-  
} bAUruTn  
O`;e^PhN  
} L@|xpq  
#OQT@uF!  
选择排序: fEWXC|"  
KW&vX%i(.  
package org.rut.util.algorithm.support; Z[, A>tJ  
?;bsg 9  
import org.rut.util.algorithm.SortUtil; JO3x#1~;_  
qg`8f?  
/** SHAC(3o /e  
* @author treeroot Rk8oshS+2  
* @since 2006-2-2 QY^v*+lr\  
* @version 1.0 S [$Os7  
*/ 3pk=c-x  
public class SelectionSort implements SortUtil.Sort { `W*b?e| H1  
Knjg`f  
/* u ? }T)B  
* (non-Javadoc) hhM?I$t:  
* R7 WGc[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "PK`Ca@`v  
*/ |z+K]R8_  
public void sort(int[] data) { <`f~Z|/-_(  
int temp; oEuV&m|yX  
for (int i = 0; i < data.length; i++) { ~jpdDV&u\  
int lowIndex = i; j><8V Qx  
for (int j = data.length - 1; j > i; j--) { b9%G"?~Zz  
if (data[j] < data[lowIndex]) { Rxf.@E  
lowIndex = j; DNyU]+\L[l  
} >Oz~j>jL  
} ?BEO(;'  
SortUtil.swap(data,i,lowIndex); xoYaL  
} U WU PY  
} >.76<fni  
s|O4 >LsG  
} <5xlP:Cx  
O-N@HZC  
Shell排序: PCcI(b>?l  
Lj,!0 25  
package org.rut.util.algorithm.support; ?xT ^9  
C)RJjaOr  
import org.rut.util.algorithm.SortUtil;  ds#om2)  
ol7^T  
/** TwT@_~ IM  
* @author treeroot ImG7E w  
* @since 2006-2-2 jgyXb5GY  
* @version 1.0 B.oD9 <9  
*/ y.6Yl**l  
public class ShellSort implements SortUtil.Sort{ rHMr8,J;  
%8]~+ #]p  
/* (non-Javadoc) S#|dmg;p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }u `~lw(Z  
*/ YM`I&!n  
public void sort(int[] data) { Ltrw)H}  
for(int i=data.length/2;i>2;i/=2){ s~)I1G  
for(int j=0;j insertSort(data,j,i); <`P7^ 'z!  
} R/|2s  
} sq;nUA=  
insertSort(data,0,1); 4r- CF#o  
} .1@8rVp7  
TEEt]R-y  
/** {*NM~yQ  
* @param data Z< 4Du  
* @param j +W}dO#  
* @param i dSkx*#FEE  
*/ -nL!#R{e  
private void insertSort(int[] data, int start, int inc) { X[;-SXq  
int temp; d+iV19#i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S4!}7NOh  
} #sJL"GB  
} D3 .$Vl,.  
} G1?m}{D)  
7+c}D>/`:  
} EjjW%"C,  
pLtAusx  
快速排序: hVLV Mqd  
E8Y(C_:s  
package org.rut.util.algorithm.support; |j w{7\+  
v9K=\ j  
import org.rut.util.algorithm.SortUtil; f$I$A(0P  
}u&,;]  
/** 8oxYgj&~X  
* @author treeroot <3WaFi u  
* @since 2006-2-2 rT/4w#_3  
* @version 1.0 U3rpmml  
*/ RGC DC*\  
public class QuickSort implements SortUtil.Sort{ 3zsjL=ta  
032PR;]  
/* (non-Javadoc) A` )A=L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _uQxrB"9  
*/ qQ^ bUpk0  
public void sort(int[] data) { tFrNnbmlQ  
quickSort(data,0,data.length-1); \O G`+"|L  
} _WB*ArR  
private void quickSort(int[] data,int i,int j){ CWx_9b zk  
int pivotIndex=(i+j)/2; dxk~  
file://swap 1_MaaA;ow"  
SortUtil.swap(data,pivotIndex,j); DMpNm F>  
FXO{i:Zo  
int k=partition(data,i-1,j,data[j]); ^sb+|b  
SortUtil.swap(data,k,j); wNtPh&  
if((k-i)>1) quickSort(data,i,k-1); $-l\&V++F  
if((j-k)>1) quickSort(data,k+1,j); &l;wb.%ijW  
_2p D  
} 'M=c-{f~  
/** skzTw66W.  
* @param data M?I^Od'8  
* @param i 1_RN*M +#  
* @param j ~z&Ho  
* @return D]B;5f  
*/ |*te69RX  
private int partition(int[] data, int l, int r,int pivot) { <52)  
do{ -l i71.M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A"pV 7 y  
SortUtil.swap(data,l,r); LPK[^  
} @mRda %qR  
while(l SortUtil.swap(data,l,r); NU |vtD  
return l; [D= KI&@&O  
} N3SB-E+  
F2WMts  
} i8 fUzg)  
-5.~POO  
改进后的快速排序: wpS $ -  
Ou,Eu05jt'  
package org.rut.util.algorithm.support; &8'QD~  
y>iote~  
import org.rut.util.algorithm.SortUtil; ^,,lo<d_L  
C#@>osC  
/** P%_PG%O2p  
* @author treeroot -gR }^D   
* @since 2006-2-2 e,I{+ ^P  
* @version 1.0 >X0c:p Pu  
*/ j`LvS  
public class ImprovedQuickSort implements SortUtil.Sort { V(6GM+  
\rPT7\ZA  
private static int MAX_STACK_SIZE=4096; _^Yav.A=  
private static int THRESHOLD=10; y - Ge"mY  
/* (non-Javadoc) e(~Y!:Q#O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \h UE, ^  
*/ ; w+<yW}EL  
public void sort(int[] data) { HP G*o  
int[] stack=new int[MAX_STACK_SIZE]; g)UYpi?p-}  
3X]\p}]z  
int top=-1; 1EcXvT=  
int pivot; n1+,Pe*)  
int pivotIndex,l,r; [>xGynU0  
M%@ =BT  
stack[++top]=0; O}cg1Q8p  
stack[++top]=data.length-1; y jQpdO  
RQt\_x7P  
while(top>0){ &.`/ln  
int j=stack[top--]; y+K21(z.  
int i=stack[top--];  EWn\ ]f|  
<h<4R Rj  
pivotIndex=(i+j)/2; l! 9G  
pivot=data[pivotIndex]; ]xf|xs  
,.PW qfb  
SortUtil.swap(data,pivotIndex,j); _?J:Z*z?  
oMer+=vH  
file://partition x"xtILrI  
l=i-1; #M5[TN!  
r=j; Tt*n.HA  
do{ o:C],G_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); DX)T}V&mP  
SortUtil.swap(data,l,r); mIUpAOC`"Z  
} &] euL:C  
while(l SortUtil.swap(data,l,r); \5=fC9*G  
SortUtil.swap(data,l,j); -4!i(^w[m/  
q[T='!Z\  
if((l-i)>THRESHOLD){ B}A7Usm  
stack[++top]=i; Bvy(vc=UDW  
stack[++top]=l-1; dab[x@#r>  
} ({l!'>?  
if((j-l)>THRESHOLD){ {<}kqn83sT  
stack[++top]=l+1; Ow7}&\;^-  
stack[++top]=j; UB&)U\hn  
} kTe0"  
;.wWw" )  
} ~e@pL*s  
file://new InsertSort().sort(data); +w'{I`QIL0  
insertSort(data); {Kh u'c  
} i][af  
/** n gC|BLT%h  
* @param data q9`!T4,  
*/ *q/oS8vavd  
private void insertSort(int[] data) { 5Zdxn>  
int temp; -+#g.1UL/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7<?~A6  
} tzFgPeo$;  
} ;q6FdS  
} B\z4o\am%  
#H1ng<QV  
} E%E3h1Ua  
8LouCv(>  
归并排序: 5 LZ+~!2+  
oztfr<cUH  
package org.rut.util.algorithm.support; std4Nyp  
sG~5O\,E  
import org.rut.util.algorithm.SortUtil; WF{rrU:  
Gj}P6V _  
/** _'lrI23I  
* @author treeroot Tfba3+V  
* @since 2006-2-2 _a3,Zuv  
* @version 1.0 ;2=H7dq  
*/ zXHCP.Rmg  
public class MergeSort implements SortUtil.Sort{ d;kdw  
E?/Bf@a28=  
/* (non-Javadoc) E'J| p7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I 8 \Ka=w  
*/ a ykNH>#Po  
public void sort(int[] data) { Zg@NMT  
int[] temp=new int[data.length]; M6+_Mi.  
mergeSort(data,temp,0,data.length-1); TLk=H Gw  
} u\-f\Z7  
B3V=;zn3  
private void mergeSort(int[] data,int[] temp,int l,int r){ tE: m& ;I  
int mid=(l+r)/2; f9Hm2wV  
if(l==r) return ; @pKQ}?  
mergeSort(data,temp,l,mid); XNU[\I  
mergeSort(data,temp,mid+1,r); O)tZ`X;  
for(int i=l;i<=r;i++){ p^U:O&U(  
temp=data; 2@ <x%T  
} 8R6!SB  
int i1=l; M8,W|eTM  
int i2=mid+1; -H%806NAX7  
for(int cur=l;cur<=r;cur++){ u K`T1*_  
if(i1==mid+1) aiKZ$KLC  
data[cur]=temp[i2++]; |W/_S^C  
else if(i2>r) 0O,l rF0'  
data[cur]=temp[i1++]; 4ZK8Y[]Lv  
else if(temp[i1] data[cur]=temp[i1++]; wM;9plYlw0  
else 5$e|@/(0  
data[cur]=temp[i2++]; ]tVU$9D   
} <E(#;F^y  
} W:7oGZ>4  
Vc! ;O9dP  
} /Wh} ;YTv^  
}D7q)_g=  
改进后的归并排序: w6fVZY4  
!6pOY*> j  
package org.rut.util.algorithm.support; FX FTf2*T  
}wh)I]]U  
import org.rut.util.algorithm.SortUtil; 62&(+'$n  
}/yhwijg  
/** 1r?<1vh:z  
* @author treeroot |8$x  
* @since 2006-2-2 (=H%VXQH  
* @version 1.0 ?dukK3u  
*/ O6^>L0'  
public class ImprovedMergeSort implements SortUtil.Sort { l!plw,PYC  
&sp7YkaW  
private static final int THRESHOLD = 10; P8Bv3  
X;7gh>Q'4  
/* &cSTem 0  
* (non-Javadoc) 4dXuy>Km  
* @LS*WJ< w-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wb] ha1$  
*/ lEBt<  
public void sort(int[] data) { ,OX(z=i_  
int[] temp=new int[data.length];  #cqia0.H  
mergeSort(data,temp,0,data.length-1); ;~$_A4;  
} Hb KJ&^  
S;[*5g6a&x  
private void mergeSort(int[] data, int[] temp, int l, int r) { %&+j(?9  
int i, j, k; Y. ]FVq  
int mid = (l + r) / 2; 4+od N.  
if (l == r) G SXe=?  
return; /RuGh8qzP  
if ((mid - l) >= THRESHOLD)  iK$)Iy0  
mergeSort(data, temp, l, mid); 'b#`8k~>  
else !e?GS"L~  
insertSort(data, l, mid - l + 1); O!}TZfC  
if ((r - mid) > THRESHOLD) (bxSN@hp2  
mergeSort(data, temp, mid + 1, r); L\Uf+d:&}G  
else !F*7Mif_E  
insertSort(data, mid + 1, r - mid); O+Fu zCWj  
7u!i)<pn  
for (i = l; i <= mid; i++) { ){|Bh3XV  
temp = data; *.0}3  
} 1MH[-=[Q  
for (j = 1; j <= r - mid; j++) { .v36xXK(  
temp[r - j + 1] = data[j + mid]; >;eWgQ6V  
} aU,Zjm7fp  
int a = temp[l]; (c ?OcwTH  
int b = temp[r]; \f6SA{vR|  
for (i = l, j = r, k = l; k <= r; k++) { %vvA'WG  
if (a < b) { I @TR|  
data[k] = temp[i++]; c rPEr  
a = temp; .eAN`-t;  
} else { QAigbSn]  
data[k] = temp[j--]; G[1:<Vg8  
b = temp[j]; sr+* q6W  
} Q# w`ZQX3  
} \WG6\Zg0A  
} |*5Kfxq  
?(el6J}  
/** hPa:>e  
* @param data ^uIP   
* @param l tCAh?nR  
* @param i 6 eqxwj{S[  
*/ f"zXiUV  
private void insertSort(int[] data, int start, int len) { &v7$*n27  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cXiNO ke&  
} _5(lp} s  
} sK8=PZ \  
} n=#AH;42  
} 7F OG^  
oa(R,{_*q  
堆排序: nqNL[w6{  
^s/HbCA  
package org.rut.util.algorithm.support; !%{/eQFT4  
B#Cb`b"  
import org.rut.util.algorithm.SortUtil; o(GXv3L  
K,{P b?  
/** 'M>QA"*48E  
* @author treeroot LeDty_  
* @since 2006-2-2 ezn%*X y,  
* @version 1.0 ]z EatY  
*/ 1*\JqCR  
public class HeapSort implements SortUtil.Sort{ XdX1GH*C  
fvn`$  
/* (non-Javadoc) n,hl6[OL7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8yEN)RqI  
*/ m~c z  
public void sort(int[] data) { qRkY-0vBP  
MaxHeap h=new MaxHeap(); 'NyIy:  
h.init(data); x%Ph``XI  
for(int i=0;i h.remove(); 7\>P@s  
System.arraycopy(h.queue,1,data,0,data.length); b^[Ab:`}[V  
} ~.99H  
qPeaSv]W  
private static class MaxHeap{ u;f${Wn'3  
22aS <@}  
void init(int[] data){ 84v7g`lrR  
this.queue=new int[data.length+1]; .{[+d3+,  
for(int i=0;i queue[++size]=data; $VOSd<87  
fixUp(size); HriY-=ji>a  
} 7e[3Pu_/X  
} *->2$uWP  
bBwQ1,c$  
private int size=0; '4-J0S<<_  
`|maf=SnY5  
private int[] queue; {;uOc{~+  
5}S~8  
public int get() { nBw4YDR!  
return queue[1]; {~J'J$hn8  
} DX>Yf}  
4D+S\S0bk  
public void remove() { d:C|laZHn  
SortUtil.swap(queue,1,size--); 1t&LNIc|^  
fixDown(1); a6\0XVU  
} ~6YTm6o  
file://fixdown cu{c:z~  
private void fixDown(int k) { m'{gO9V  
int j; /Kcp9Qx  
while ((j = k << 1) <= size) { e ]-fb{oVH  
if (j < size %26amp;%26amp; queue[j] j++; |q0F*\z3  
if (queue[k]>queue[j]) file://不用交换 &QHZ]2%U  
break; gR7in!8  
SortUtil.swap(queue,j,k); D%[yAr;r  
k = j; mX8k4$z  
} ^n Gj 7b  
} Hw"Lo Vh  
private void fixUp(int k) { r<< ]41  
while (k > 1) { M_ *KA  
int j = k >> 1; S7i,oP7  
if (queue[j]>queue[k]) 8EbJ5wu/%S  
break; ?|4Y(0N  
SortUtil.swap(queue,j,k); 'cp1I&>  
k = j; CK[w0VCT  
} ,#n$YT7  
} #aHPB#  
EWz,K] _'  
} 1eod;^AP9  
XT2:XWI8  
} &+0WZ#VI  
Tvp~~Dk  
SortUtil: }6S~"<Ym  
2bIP.M2Fs  
package org.rut.util.algorithm; bhk:Szqz  
d\eTyN'rA  
import org.rut.util.algorithm.support.BubbleSort; t UOqF  
import org.rut.util.algorithm.support.HeapSort; LtrE;+%2oz  
import org.rut.util.algorithm.support.ImprovedMergeSort; !*I0}I ~  
import org.rut.util.algorithm.support.ImprovedQuickSort; )gNS%t c*K  
import org.rut.util.algorithm.support.InsertSort; h"#[{$(  
import org.rut.util.algorithm.support.MergeSort; d WKjVf  
import org.rut.util.algorithm.support.QuickSort; wE*o1.  
import org.rut.util.algorithm.support.SelectionSort; 9NXL8QmC8  
import org.rut.util.algorithm.support.ShellSort; 2TQyQ%  
:8( "n1^  
/** `^d[$IbDW  
* @author treeroot hCpX# rg?  
* @since 2006-2-2 \S5YS2,P  
* @version 1.0 AFMIp^F  
*/ dd?ZQ:n  
public class SortUtil { ^9_4#Ep(  
public final static int INSERT = 1; tJ 3Hg8;  
public final static int BUBBLE = 2; 3lh^maQ]  
public final static int SELECTION = 3; M\m6|P  
public final static int SHELL = 4; ,a6Oi=+>/U  
public final static int QUICK = 5; ][D/=-  
public final static int IMPROVED_QUICK = 6; 8PRKSJ[@K  
public final static int MERGE = 7; (~k{aO  
public final static int IMPROVED_MERGE = 8; VbU*&{j  
public final static int HEAP = 9; Nbyc,a[o  
xZ=6  
public static void sort(int[] data) { 0,{tBo  
sort(data, IMPROVED_QUICK); "pA24Ze  
} yb/v?q?Fk  
private static String[] name={ @Z+(J:Grm5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vx7wW<e%D  
}; F/ si =%  
pw, <0UhV  
private static Sort[] impl=new Sort[]{ :Vnus @#r  
new InsertSort(), T[(4z@d`5  
new BubbleSort(), a_V.mu6h6p  
new SelectionSort(), S\jIs[Dz  
new ShellSort(), f.e4 C,  
new QuickSort(), }LA7ku  
new ImprovedQuickSort(), V#Pz `D  
new MergeSort(), (_ TKDx_  
new ImprovedMergeSort(), RCC~#bb  
new HeapSort() bnZ`Wc*5b  
}; Au"7w=G`f  
C@F3iwTtp  
public static String toString(int algorithm){ GZx?vSoHh  
return name[algorithm-1]; h\<;N*Xi  
} LX%UkfA9  
6'a1]K  
public static void sort(int[] data, int algorithm) { (?ofL|Cg(  
impl[algorithm-1].sort(data); e$Npo<u  
} O!3`^_.  
>|W\8dTQ  
public static interface Sort { dN)@/R^E;  
public void sort(int[] data); :c/](M  
} du5|/  
u27*-X 5  
public static void swap(int[] data, int i, int j) { z~0f[As.  
int temp = data; <c!I\y  
data = data[j]; u^X,ASkQ  
data[j] = temp; a? <Ar#)j  
} e b*w$|y6"  
} yv+DM`0  
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