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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 v?Hz8Q;(  
插入排序: 'J<KL#og  
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package org.rut.util.algorithm.support; Z)7 {e"5d  
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import org.rut.util.algorithm.SortUtil; Ctt{j'-[  
/** %r~TMU2"  
* @author treeroot K#F~$k|1B  
* @since 2006-2-2 zYSXG-k  
* @version 1.0 ]Wv\$JXI  
*/ n2Ycq&O  
public class InsertSort implements SortUtil.Sort{ XX}RbE#4  
n&[U/`o  
/* (non-Javadoc) )n|:9hc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &g@?{5FP  
*/ {v]A`u)  
public void sort(int[] data) { oOe5IczS(  
int temp; >48zRi\N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R4QXX7h!  
} @ZK|k  
} le|e 4f*+  
} i':<Ro  
Z:9"7^+  
} b\VY)=U  
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冒泡排序: yZA }WTGe  
b^5rV5d  
package org.rut.util.algorithm.support; ; >.>vLF  
+~02j1Jx  
import org.rut.util.algorithm.SortUtil; zj`!ZY?fv  
1c+[S]7rY  
/** .#J'+LxFr  
* @author treeroot (? YTQ8QR  
* @since 2006-2-2 hMeE@Q0  
* @version 1.0 QSEf  
*/ @y)-!MHN(8  
public class BubbleSort implements SortUtil.Sort{ cq % =DZ  
hq$:62NYg  
/* (non-Javadoc) e/F=5_Io  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m/%sBw\rx  
*/ =f{V<i~q  
public void sort(int[] data) { SgFyv<6>:  
int temp; XrtB&h|C  
for(int i=0;i for(int j=data.length-1;j>i;j--){ gn#4az3@e>  
if(data[j] SortUtil.swap(data,j,j-1); xAQ=oF +  
} x(5>f9bb  
} nXk<DlTws  
} TQ.d|{B[  
} "M6:)h9jV  
.0cm mpUNq  
} O,]t.1V  
D*DCMMp=0  
选择排序: 4U~[ 8U}g  
]f-< s,@  
package org.rut.util.algorithm.support; 'X"@C;q  
tlQ3 BKp  
import org.rut.util.algorithm.SortUtil; $2 ~RZpS  
u==bLl=$  
/** mz3!HksZ "  
* @author treeroot IdUMoLL?  
* @since 2006-2-2 {1>V~e8t  
* @version 1.0 g(>;Z@Y  
*/ |Ah26<&  
public class SelectionSort implements SortUtil.Sort { q[ ] "`?  
wH3FCfvm  
/* e$45OL  
* (non-Javadoc) |Xlc2?e  
* Nf%jLK~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #&\^{Z  
*/ "$;=8O5O  
public void sort(int[] data) { ~*ZB2  
int temp; DAj@wn3K?  
for (int i = 0; i < data.length; i++) { PBTGN;y  
int lowIndex = i; LL7a 20  
for (int j = data.length - 1; j > i; j--) { /RT3 r  
if (data[j] < data[lowIndex]) { ;l[/<J  
lowIndex = j; 5- 0  
} Pv1C o:  
} <=/v%VXPm  
SortUtil.swap(data,i,lowIndex); x;# OM  
} 4~53%=+  
} 9qc1^Fs~  
KN'l/9.  
} j/5>zS  
KM*sLC#  
Shell排序: ^VR1whCrx  
x#|=.T  
package org.rut.util.algorithm.support; >r2m1}6g"  
!:,d^L!bh  
import org.rut.util.algorithm.SortUtil; U SXz  
SXSH9;j  
/** $h0]  
* @author treeroot 9 %4Pt=v~d  
* @since 2006-2-2 xAMj16ZF  
* @version 1.0 i,NN"  
*/ ;_R;P;<  
public class ShellSort implements SortUtil.Sort{ $NJ]2P9L  
0|nvi=4~e|  
/* (non-Javadoc) B!K{y>|.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I1=YSi;A  
*/ y%Ui)UMnw]  
public void sort(int[] data) { yb1A(~  
for(int i=data.length/2;i>2;i/=2){ 2mP| hp?  
for(int j=0;j insertSort(data,j,i); %L+/GtxK  
} DZ?>9W{  
} 5m&{ f>]T  
insertSort(data,0,1); L`cc2.F  
} 1b+ B  
ICo_O] Ke  
/** 0I* ^VGZ  
* @param data "5Bga jrB  
* @param j &ME[H  
* @param i d~tG#<^`  
*/ .Ej `!  
private void insertSort(int[] data, int start, int inc) { P1]ucu_y,  
int temp; ~O?Gi 4^Yg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RX4O1Z0  
} a"&@G=M@d  
} R!lNm,i  
} ptQr8[FA  
x-:vpv%6y  
} %gSqc }v*  
ndT:,"s  
快速排序: d*khda;Vj  
eft-]c+*0  
package org.rut.util.algorithm.support; Kg=TPNf"$  
Bs =V-0  
import org.rut.util.algorithm.SortUtil; 1*S It5?4  
`sQ\j Nu  
/** 1GN>,Lb: o  
* @author treeroot quN7'5ZC[  
* @since 2006-2-2 N5#qox$D  
* @version 1.0 p<Wb^BE  
*/ PwQW5,,h0  
public class QuickSort implements SortUtil.Sort{ 9*GwW&M%1_  
J?)vsnD.H  
/* (non-Javadoc) H[@uE*W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f)H6 n l7r  
*/ Q~G+YjM3  
public void sort(int[] data) { ^+oi|y  
quickSort(data,0,data.length-1); Z2)f$ c  
} L~x3}o$-o  
private void quickSort(int[] data,int i,int j){ 7'S/hV%  
int pivotIndex=(i+j)/2; vP^]Y.6  
file://swap %E?:9. :NJ  
SortUtil.swap(data,pivotIndex,j); O*d&H;;  
Y;6<AIx>  
int k=partition(data,i-1,j,data[j]); 3H%R`ha  
SortUtil.swap(data,k,j); V.)y7B  
if((k-i)>1) quickSort(data,i,k-1); v]F q}I"  
if((j-k)>1) quickSort(data,k+1,j); 0&=2+=[c  
\#1!qeF  
} '!Ps4ZTn_  
/** 4q/E7n  
* @param data EJjTf:  
* @param i Hj |~*kG  
* @param j g-E!*K  
* @return DBAJkBs  
*/ #i-!:6sLA  
private int partition(int[] data, int l, int r,int pivot) { OHssUt  
do{ N?Mmv|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); uYIw ?fXy  
SortUtil.swap(data,l,r); Ky|Hi3?  
} =x> z|1  
while(l SortUtil.swap(data,l,r); ^%~ztn 51  
return l; B, xrZs  
} bv9\Jp0c  
9<kKno  
} r=n|MT^O  
m}:";>?#  
改进后的快速排序: "M v%M2'c  
'&Q_5\Tn  
package org.rut.util.algorithm.support; &YO5N4X~o  
($E(^p% O  
import org.rut.util.algorithm.SortUtil; >4ebvM 0|  
Yk(OVl T  
/** Tr)a6Cf  
* @author treeroot mvVVPf9  
* @since 2006-2-2 %83PbH  
* @version 1.0 -4,qAnuMx  
*/ BT 98WR"\  
public class ImprovedQuickSort implements SortUtil.Sort { -yg9ug  
6Kh: m-E9  
private static int MAX_STACK_SIZE=4096; h?.6e9Y4  
private static int THRESHOLD=10; \@pl:Os  
/* (non-Javadoc) \4K8*`$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wC!(STu  
*/ Mb\~WUWI  
public void sort(int[] data) { MgHyKn'rL  
int[] stack=new int[MAX_STACK_SIZE]; }n 6BI}n  
o80pmy7@  
int top=-1;  1k2Ck  
int pivot; r NU,(htS  
int pivotIndex,l,r; A&$!s)8z  
PHfGl  
stack[++top]=0; $msT,$NJ  
stack[++top]=data.length-1; cIl^5eE^Pq  
!aa^kcEjnL  
while(top>0){ H\8i9RI  
int j=stack[top--]; @WhcY*R2  
int i=stack[top--]; 8f,jC+(  
uAzV a!)  
pivotIndex=(i+j)/2; @ )<uQ S  
pivot=data[pivotIndex]; +/\.%S/  
Se"\PxBR  
SortUtil.swap(data,pivotIndex,j); yu#Jw  
*2 MUG h  
file://partition F!pUfF,&  
l=i-1; t=XiSj\n  
r=j; SnQ$  
do{ F`Q,pBl1p6  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X?>S24I"9  
SortUtil.swap(data,l,r); ]a _;*Xq8d  
} KT?vs5jg$&  
while(l SortUtil.swap(data,l,r); 4$IPz7  
SortUtil.swap(data,l,j); e{=7,DRH<  
deHBY4@  
if((l-i)>THRESHOLD){ l,6="5t  
stack[++top]=i; &\0LR?Nh  
stack[++top]=l-1; J4`08,  
} (~}l?k  
if((j-l)>THRESHOLD){ 5U1@wfKE3>  
stack[++top]=l+1; bI]1!bi]i  
stack[++top]=j; V_+3@C  
} 2$\1v*:  
ucoBeNsHx  
} fD,#z&  
file://new InsertSort().sort(data); {y<_S]0  
insertSort(data); EVb'x Zr  
} lJ7k4ua\  
/** d:A+s>`$M  
* @param data Jb ;el*,K  
*/ Ij=hmTl{P  
private void insertSort(int[] data) { tp5]n`3rD  
int temp; "<!|am(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); } k5pfz  
} -(:BkA  
} /x$jd )C  
} Xj !0jF33  
.>}we ~O  
} $#t&W&  
vtL)  
归并排序: F+hsIsQ  
!*CL>}-,  
package org.rut.util.algorithm.support; uidE/7  
Q8\Ks|u]  
import org.rut.util.algorithm.SortUtil; o &Nr5S  
It]CoAo+  
/** o^7NZ]m  
* @author treeroot Lo;T\C N  
* @since 2006-2-2 J3q}DDnEo  
* @version 1.0 Qz<v. _  
*/ N4HnW0  
public class MergeSort implements SortUtil.Sort{ B623B HwS  
Dhef|E<  
/* (non-Javadoc) `^_.E:f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "h:xdaIE/p  
*/ t5 5k#`Z  
public void sort(int[] data) { {BKI8vy  
int[] temp=new int[data.length]; 0 'L+9T5  
mergeSort(data,temp,0,data.length-1); !sR`]0  
} [8)Zhw$  
M%$zor  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^-=,q.[7  
int mid=(l+r)/2; lHP[WO  
if(l==r) return ;  Rl 6E  
mergeSort(data,temp,l,mid); =&}dP%3LC)  
mergeSort(data,temp,mid+1,r); C:P,q6  
for(int i=l;i<=r;i++){ YpNTq_S1,  
temp=data; e%UFY-2  
} I^lb;3uR  
int i1=l; RJd55+h  
int i2=mid+1; $vc:u6I[  
for(int cur=l;cur<=r;cur++){ eb:uh!  
if(i1==mid+1) 8G{} r  
data[cur]=temp[i2++]; w/Q'T&>b/  
else if(i2>r) L*L3;y|  
data[cur]=temp[i1++]; r!#a.  
else if(temp[i1] data[cur]=temp[i1++]; ~BZA_w"`1  
else ]2Lwd@  
data[cur]=temp[i2++]; ~Jq<FVK  
} Iy`Zh@"~  
} e'7!aysj  
nP_s+k  
} Y{2\==~  
PW.W.<CL  
改进后的归并排序: [g<6i.<I  
bh_i*DJ]  
package org.rut.util.algorithm.support; o1kLT@VCl  
"3}Bv X  
import org.rut.util.algorithm.SortUtil; 3:);vh!  
=DF7l<&km  
/** N5oao'7|A  
* @author treeroot = u73AM}  
* @since 2006-2-2 >F@7}Y(  
* @version 1.0 Ym0Xl(Se  
*/ 9Y*6AaKE6  
public class ImprovedMergeSort implements SortUtil.Sort { i}M&1E  
WFLT[j!1  
private static final int THRESHOLD = 10; G?8,&jP~T  
t5e%"}>7H  
/* )zen"](cze  
* (non-Javadoc) 5H?`a7q N  
* xB 4A"|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O2A Z|[*I  
*/ 1LcQ*d  
public void sort(int[] data) { #CVD:p  
int[] temp=new int[data.length]; Q{mls  
mergeSort(data,temp,0,data.length-1); 3Jk;+<  
} >#c]rk:  
xae}8E   
private void mergeSort(int[] data, int[] temp, int l, int r) { 7uxy<#Ar  
int i, j, k; {f)",#  
int mid = (l + r) / 2; `<+D<x)(3  
if (l == r) G4AX8@;U  
return; 7c<2oTN'  
if ((mid - l) >= THRESHOLD) ILTd*f  
mergeSort(data, temp, l, mid); YceiP,!4?v  
else >l 'QX(  
insertSort(data, l, mid - l + 1); r"J1C  
if ((r - mid) > THRESHOLD) 8|V6RgA%  
mergeSort(data, temp, mid + 1, r); +B c/@.Q'  
else !^G+@~U  
insertSort(data, mid + 1, r - mid); S 8h/AW6l  
fm:/}7s  
for (i = l; i <= mid; i++) { 3vmLftZE}  
temp = data; ~D<o}ItRF  
} [-1Nn}  
for (j = 1; j <= r - mid; j++) { [*8w v^  
temp[r - j + 1] = data[j + mid]; ZXHG2@E)  
} MdZ7Yep  
int a = temp[l]; ;STO!^9~  
int b = temp[r]; =4+UX*&i?.  
for (i = l, j = r, k = l; k <= r; k++) { b 3D:w{l  
if (a < b) { 7f[nNng  
data[k] = temp[i++]; az0( 54M  
a = temp; yBht4"\Al  
} else { t3v*P6  
data[k] = temp[j--]; NzNAhlXj3  
b = temp[j]; LDr!d1A  
} D@5&xd_@4  
} ANn {*h  
} `H ^Nc\P#  
U-X  
/** Af ^6  
* @param data dg/7?gV  
* @param l mkrvWZjZX  
* @param i ~$!eB/6ty  
*/ ZEUd?"gaR  
private void insertSort(int[] data, int start, int len) { `k _5Pz\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !z58,hv  
} mcS/-DaN?  
} c{rX7+bN  
} 8Tv;,a  
} ldanM>5  
1\kOjF)l  
堆排序: uSM4:!8  
Q gDjc '  
package org.rut.util.algorithm.support; y%}Po)X]f  
a5L#c=  
import org.rut.util.algorithm.SortUtil; o9q%=/@,  
dGP*bMCT  
/** X\X  
* @author treeroot 8y~ Jn~t  
* @since 2006-2-2 !+9H=u  
* @version 1.0 4#;rv$ {  
*/ @Eqc&v!O  
public class HeapSort implements SortUtil.Sort{ n?!.r c  
`k^ i#Nc>  
/* (non-Javadoc) V*U"OJ%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NT= ?@uxD  
*/ e%(zjCA  
public void sort(int[] data) { $-M1<?5  
MaxHeap h=new MaxHeap(); V:QfI  
h.init(data); n_.2B$JD  
for(int i=0;i h.remove(); DY~~pi~  
System.arraycopy(h.queue,1,data,0,data.length); }@SZ!-t%rD  
} V1xpJ  
x #BUIi  
private static class MaxHeap{ (@uQ>dR:  
 ItC*[  
void init(int[] data){ iWGgt]RJ  
this.queue=new int[data.length+1]; u?Iop/b  
for(int i=0;i queue[++size]=data; (gl CTF9v  
fixUp(size); .<rL2`C[c  
} vb{&T<  
} \dbpC Z  
\EUc17  
private int size=0; A6q,"BS^d  
#s(B,`?N  
private int[] queue; Fl(+c0|kT  
E)#3*Wlu$  
public int get() { [^1;8Tbk  
return queue[1]; }I; =IYrN  
} @>(l}5U5  
PrDvRWM  
public void remove() { &p=|z2 J  
SortUtil.swap(queue,1,size--); _GI [SzD  
fixDown(1); HPVT$EJ  
} - Kj$A@~x  
file://fixdown XH1so1h  
private void fixDown(int k) { Gv?3}8Wp  
int j; k,X` }AJ6  
while ((j = k << 1) <= size) { 1 (P >TH  
if (j < size %26amp;%26amp; queue[j] j++; GB^Ch YOb  
if (queue[k]>queue[j]) file://不用交换 9i,QCA  
break; Ij@YOt  
SortUtil.swap(queue,j,k); +%UXI$v  
k = j; /D 2v 1  
} k{y@&QNj  
} 5W 5\  *L  
private void fixUp(int k) { SZ1+h TY7d  
while (k > 1) { lJ R",_  
int j = k >> 1; YU M%3  
if (queue[j]>queue[k]) !_l W#feR  
break; x8b w#  
SortUtil.swap(queue,j,k); .~ZNlI {K  
k = j; #E{OOcM  
} kp xd+w  
} }4A+J"M4y  
PO<4rT+B  
} S[X bb=n  
W O|2x0K  
} @"'1"$  
jP@H$$-=wH  
SortUtil: ,t*#o&+  
cX E42MM  
package org.rut.util.algorithm; 'WxcA)z0cQ  
2+sNt6B2  
import org.rut.util.algorithm.support.BubbleSort; uDQ d48>  
import org.rut.util.algorithm.support.HeapSort; wEQV"I  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3~a!h3.f  
import org.rut.util.algorithm.support.ImprovedQuickSort; sJw3o7@pg  
import org.rut.util.algorithm.support.InsertSort; }y x'U 3  
import org.rut.util.algorithm.support.MergeSort; k3}ymhUf  
import org.rut.util.algorithm.support.QuickSort; xwTN\7f>  
import org.rut.util.algorithm.support.SelectionSort; A4Q8^^byY  
import org.rut.util.algorithm.support.ShellSort; `| L+a~~  
o_b j@X  
/** oizD:|  
* @author treeroot psgXJe$  
* @since 2006-2-2 0Evmq3,9  
* @version 1.0 na(@`(j[  
*/ T&w3IKb|}  
public class SortUtil { ,DXNq`24  
public final static int INSERT = 1; Rkw)IdB  
public final static int BUBBLE = 2; ~ NK w}6  
public final static int SELECTION = 3; -9.S?N'T>;  
public final static int SHELL = 4; 8`U5/!6fu  
public final static int QUICK = 5; &r/a\t,8n  
public final static int IMPROVED_QUICK = 6; #-f7hg*  
public final static int MERGE = 7; z )a8 ^]`  
public final static int IMPROVED_MERGE = 8; )+u|qT3%  
public final static int HEAP = 9; kJZBQ<^  
%kKe"$)0  
public static void sort(int[] data) { Y3mATw 3Wh  
sort(data, IMPROVED_QUICK); m%qah>11  
} CJ {?9z@$.  
private static String[] name={ x6.an_W6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" eH(8T  
}; 2%rAf8=  
z X2BJ  
private static Sort[] impl=new Sort[]{ [ 3]!*Cd  
new InsertSort(), \2L%%M  
new BubbleSort(), g(;t,Vy,I  
new SelectionSort(), x5c pv  
new ShellSort(), HulN84  
new QuickSort(), k8GcHqNHx  
new ImprovedQuickSort(), S^c5  
new MergeSort(), f:KKOLm  
new ImprovedMergeSort(), _$9<N5F.,o  
new HeapSort() =L#tSa=M"  
}; cr27q6_  
@Vr?)_ 0  
public static String toString(int algorithm){ |GA4fFE=  
return name[algorithm-1]; zX"@QB3E  
} 38>8{Ma  
]mn(lK  
public static void sort(int[] data, int algorithm) { I'`Q_5s5  
impl[algorithm-1].sort(data); G!ty@ Fx  
} ;E,%\<  
6*A S4l  
public static interface Sort { sG%Q?&-  
public void sort(int[] data); Qx>S>f  
} V/.Y]dN5  
#W @6@Mv  
public static void swap(int[] data, int i, int j) { B;SYO>.W  
int temp = data; >/.-N  
data = data[j]; j I_TN5  
data[j] = temp; JcvWE $  
} $Dxz21|P7  
} 2~<?E`+  
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