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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。 e2Kpx8kWj  
插入排序: "6*Kgf2G  
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package org.rut.util.algorithm.support; utm+\/  
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import org.rut.util.algorithm.SortUtil; (fk, 80  
/** 2 Zjb/  
* @author treeroot ,T21z}r  
* @since 2006-2-2 !ovZ>,1  
* @version 1.0 !EmR(x  
*/ \dxW44sM  
public class InsertSort implements SortUtil.Sort{ ]RrP !|^  
_G}CD|Kx  
/* (non-Javadoc) 5(MZ%-~l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Q?|gfJH  
*/ M\.T 0M_  
public void sort(int[] data) { [nPzh Xs  
int temp; h7W%}6Cqkw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f'i8Mm4IL  
} =Q=&Ucf_  
} g`5`KU|  
} Uc4 L|:  
Dxa)7dA|  
} p`l[cVQ<  
\,cKt_{ u  
冒泡排序: '__3[D  
M;TfD  
package org.rut.util.algorithm.support; divZJc  
!K^Z5A_;  
import org.rut.util.algorithm.SortUtil; s*~jvL  
:Z]+Z_9p  
/** )zLS,/pk^  
* @author treeroot f w>Gx9  
* @since 2006-2-2 + x ;ML  
* @version 1.0 5N3!!FFE  
*/ i>if93mpj  
public class BubbleSort implements SortUtil.Sort{ I.\f0I'.  
8,H5G`  
/* (non-Javadoc) t ]I(98pY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6_ &6'Vq  
*/ ^q N1~v=hS  
public void sort(int[] data) { pv?17(w(\  
int temp; [sY1|eX   
for(int i=0;i for(int j=data.length-1;j>i;j--){ a^}P_hg}-  
if(data[j] SortUtil.swap(data,j,j-1); J0*]6oD!  
} A*;^F]~'  
} g;Sg 2  
} )6R#k8'ERr  
} ^(m6g&$(  
=|JIY  
} ]{6yS9_tuI  
vyx\N{  
选择排序: Lv5 ==w}  
; # ?0#):-  
package org.rut.util.algorithm.support; ESf7b `tS  
$E_vCB _  
import org.rut.util.algorithm.SortUtil; kcz#8K]~  
JQh s=Xg  
/** Jx ;"a\KD  
* @author treeroot {LJ6't 8y:  
* @since 2006-2-2 H{A| ~V)  
* @version 1.0 Rd1ku=  
*/ hy&Hl  
public class SelectionSort implements SortUtil.Sort { z9kX`M+  
pA,EUh| H  
/* uj1E* 98m  
* (non-Javadoc) k| cI!   
* 2=,Sz1`t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yjFQk,A  
*/ 2:5gMt  
public void sort(int[] data) { \/4%[Q2QDm  
int temp; S{)n0/_  
for (int i = 0; i < data.length; i++) { [11-`v0  
int lowIndex = i; A%w]~ chC9  
for (int j = data.length - 1; j > i; j--) { q {+poV X  
if (data[j] < data[lowIndex]) { Yg,WdVI&@  
lowIndex = j; V?J,ab$X#  
} 1o8"==n%  
} >/`c mNmb  
SortUtil.swap(data,i,lowIndex); bq&S?! =s  
} N[bf.5T  
} <w2NJ ~M^  
6.7 Kp  
} |{LaZXU&  
XM@i|AK M0  
Shell排序: 898wZ{9  
9-iB?a7{.  
package org.rut.util.algorithm.support; E!~2\qKT  
`8.32@rUB.  
import org.rut.util.algorithm.SortUtil; 42LXL*-4  
utl=O  
/** GGL4<P7  
* @author treeroot wfTv<WG,.E  
* @since 2006-2-2 hYv 6-5_  
* @version 1.0 ec[[OIO  
*/ v*fc5"3eO  
public class ShellSort implements SortUtil.Sort{ ~_j%nJ &2  
c%Cae3;  
/* (non-Javadoc) zUtf&Ih  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7>@/*S{X  
*/ t\bxd`,  
public void sort(int[] data) { m;+1;B  
for(int i=data.length/2;i>2;i/=2){ 9}0Jc(B/x  
for(int j=0;j insertSort(data,j,i); "/Q(UV<d  
} mS&\m#s<  
} yxUVM`.~  
insertSort(data,0,1); q[+: t   
} <H@!Xw;  
E1ob+h:`d  
/** _ N f[HP  
* @param data O8N0]Mz  
* @param j -xgmc-LGo  
* @param i e27CbA{_w  
*/ 3v>,c>b([  
private void insertSort(int[] data, int start, int inc) { *]{I\rX  
int temp; 78J .~v/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `"mK\M  
} L=w Fo^N  
} 54cgX)E[x  
} sH,)e'0  
x  Bw.M{  
} V+~{a:8[pq  
iwjl--)@K  
快速排序: m9w ; a  
I%C:d#p  
package org.rut.util.algorithm.support; I"<. h'  
]sP9!hup  
import org.rut.util.algorithm.SortUtil; [#6Esy8|  
F8;4Oj  
/** EjE`S_i=  
* @author treeroot XTaWd0Y  
* @since 2006-2-2 !;C(pnE  
* @version 1.0 R{A/ +7!  
*/ ,vw`YKg  
public class QuickSort implements SortUtil.Sort{ gL"Q.ybA  
Eq;frnw>q  
/* (non-Javadoc) "(&`muIc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bK%tQeT  
*/ |/\1nWD  
public void sort(int[] data) { M]TVaN$v#  
quickSort(data,0,data.length-1); 9+Bq00-Z$  
} = d.W'q|  
private void quickSort(int[] data,int i,int j){ 3Il/3\  
int pivotIndex=(i+j)/2; <G?85*Nv_  
file://swap HwMsP$`q  
SortUtil.swap(data,pivotIndex,j); }4]x"DfIg  
>,vW  
int k=partition(data,i-1,j,data[j]); ?'m5)Z{  
SortUtil.swap(data,k,j); ^l9 *h  
if((k-i)>1) quickSort(data,i,k-1); jV&W[xKa  
if((j-k)>1) quickSort(data,k+1,j); E?D{/ k,zZ  
-"9)c^KVx  
} 0M2+?aKif  
/** B_jI!i{N%o  
* @param data vbh#[,lh  
* @param i Dohe(\C@  
* @param j [7w_.(f#  
* @return &YP>" <  
*/ k\Tm?^L)  
private int partition(int[] data, int l, int r,int pivot) { [z@RgDX v  
do{ .h^Ld,Chj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,8 ?*U]}  
SortUtil.swap(data,l,r); &?sjeC_  
} usf(U>  
while(l SortUtil.swap(data,l,r); =C1Qo#QQ%  
return l; ([o:_5/8I  
} Y,}43a0A  
J uKaRR~  
} D|3QLG  
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改进后的快速排序: @5GP;3T  
4tNgK[6M  
package org.rut.util.algorithm.support; cty#@?"e  
g]JI}O*5  
import org.rut.util.algorithm.SortUtil; 4<Y[L'UaA@  
B#n}y  
/** #wuE30d  
* @author treeroot `&7? +s  
* @since 2006-2-2 ]r5Xp#q2  
* @version 1.0 wk/U"@lq  
*/ Q[tz)99~  
public class ImprovedQuickSort implements SortUtil.Sort { :u93yH6~8  
0LuY"(LR  
private static int MAX_STACK_SIZE=4096; &`W,'qD$  
private static int THRESHOLD=10; V t;&2v  
/* (non-Javadoc) >m{-&1Tx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \9Zfu4WR  
*/ 7O :Gi*MA  
public void sort(int[] data) { Z9bPj8d  
int[] stack=new int[MAX_STACK_SIZE]; S]@iS[|?  
.sMi"gg  
int top=-1; ,{t!->K  
int pivot; 4HmRsOl  
int pivotIndex,l,r; 3_-m>J**  
W7> _nK+g?  
stack[++top]=0;  :Xr3 3  
stack[++top]=data.length-1; 74wa  
,kuOaaV7K  
while(top>0){ (XWs4R.mkb  
int j=stack[top--]; dU n#'<g5  
int i=stack[top--]; <-7Ha_#  
;yrcH+I$_  
pivotIndex=(i+j)/2;  ]^%3Y  
pivot=data[pivotIndex]; h8;"B   
X~!?t }  
SortUtil.swap(data,pivotIndex,j); G&Sg .<hn  
!\v3bOi&  
file://partition =5F49  
l=i-1; c~;.m<yrf  
r=j; P~>nlm82]  
do{ EJY:C9W  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @Q5^Q'!  
SortUtil.swap(data,l,r); y+h=x4t  
} |9M y>8k(  
while(l SortUtil.swap(data,l,r); Q"uu&JC  
SortUtil.swap(data,l,j); aW5~z^I  
izA3INT  
if((l-i)>THRESHOLD){ {+}Lc$O#C  
stack[++top]=i; UQr+\ u  
stack[++top]=l-1; I !~Omr@P  
} roQIP%h!  
if((j-l)>THRESHOLD){ a)b@en;v  
stack[++top]=l+1; <{j9|mt  
stack[++top]=j; L1K_|X  
} > xw+2<  
]B[Qdn  
} /2I("x]  
file://new InsertSort().sort(data); $R4\jIew V  
insertSort(data); ,pepr9Yd  
} 4f5$^uN$qA  
/** t trp| (  
* @param data hG)lVo!L4j  
*/ O[5ti=W  
private void insertSort(int[] data) { @^@-A\7[KO  
int temp; p%'((!a2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #kEdf0  
} PX'%)5:q;i  
} #UIg<:  
} ['<rfK  
7#QH4$@1P  
} un=)k;oh  
o,I642R~  
归并排序: L}+!<Ug  
-B!pg7>'##  
package org.rut.util.algorithm.support; rKxk?}  
," v%  
import org.rut.util.algorithm.SortUtil; |n/id(R+  
1??RX}8[L+  
/** cj)~7 WF  
* @author treeroot eS|p3jk;  
* @since 2006-2-2 ( d.i np(  
* @version 1.0 M"V@>E\L  
*/ >LSA?dy!?  
public class MergeSort implements SortUtil.Sort{ L2%P  
DTY=k  
/* (non-Javadoc) oY: "nE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;MD{p1w  
*/ g(Nf.hko  
public void sort(int[] data) { ^4:= b  
int[] temp=new int[data.length]; TvR2lP  
mergeSort(data,temp,0,data.length-1); WMg^W(  
} gS ]'^Sr  
dewu@  
private void mergeSort(int[] data,int[] temp,int l,int r){  $?YkgK  
int mid=(l+r)/2; oR }  
if(l==r) return ;  + h&V;  
mergeSort(data,temp,l,mid); fA^O  
mergeSort(data,temp,mid+1,r); ub%q<sE*  
for(int i=l;i<=r;i++){ `JCC-\9T_  
temp=data; _ev^5`>p/  
} :|g{ gi  
int i1=l; Z8W<RiR  
int i2=mid+1; )_ uK(UNZ5  
for(int cur=l;cur<=r;cur++){ ~jaGf  
if(i1==mid+1) E {MSi"  
data[cur]=temp[i2++]; \<%a`IA!*  
else if(i2>r) [+GG Wo  
data[cur]=temp[i1++]; f&|SGD*  
else if(temp[i1] data[cur]=temp[i1++]; 5P4 >xv[  
else CT : ac64  
data[cur]=temp[i2++]; zc"eSy< w$  
} LY MfoXp  
} +}n]A^&I\E  
i F Ab"VA  
} \BDNF< _  
K+Qg=vGY  
改进后的归并排序: qJ !xhf1  
T&%>/7I>  
package org.rut.util.algorithm.support; -T>`PJpJuL  
Z.<B>MD8^  
import org.rut.util.algorithm.SortUtil; MX34qJ9k  
H>B:jJf  
/** sXUM,h8$!+  
* @author treeroot  2r[,w]  
* @since 2006-2-2 UkUdpZ.[il  
* @version 1.0 C`ok{SNtUy  
*/ Hd:ZE::Q'#  
public class ImprovedMergeSort implements SortUtil.Sort { "6ZatRUd  
.d2s4q\  
private static final int THRESHOLD = 10; +W}f0@#)<  
l\eq/yg_  
/* f%af.cR*  
* (non-Javadoc) rRMC< .=  
* vDemY"wz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YG%Zw  
*/ 0y(d|;':  
public void sort(int[] data) { qxq ~9\My  
int[] temp=new int[data.length]; `]Xb w^Y'x  
mergeSort(data,temp,0,data.length-1); q7;)&_'  
} ~ rRIWfhb  
6Z3v]X  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6 ^p 6v   
int i, j, k; L6FUC6x"  
int mid = (l + r) / 2; r8qee$^M  
if (l == r) 607#d):Y  
return; 6^ ~& sA  
if ((mid - l) >= THRESHOLD) 0-@waK  
mergeSort(data, temp, l, mid); Z^sO`C  
else jE{z4en  
insertSort(data, l, mid - l + 1); q>Y_I<;'g  
if ((r - mid) > THRESHOLD) ?#W>^Za=  
mergeSort(data, temp, mid + 1, r); kn! J`"b  
else T+\BX$w/4e  
insertSort(data, mid + 1, r - mid); PW}Yts7p  
g\ke,r6  
for (i = l; i <= mid; i++) { ]fR 3f  
temp = data; V!oyC$eV  
} `jJb) z3D  
for (j = 1; j <= r - mid; j++) { :Qf^@TS}O  
temp[r - j + 1] = data[j + mid]; 6D$xG"c  
} l|DOsI'r  
int a = temp[l]; cu Nwv(P  
int b = temp[r]; "k+QDQ3=  
for (i = l, j = r, k = l; k <= r; k++) { P)T:6K  
if (a < b) { L Nj|t)Ov  
data[k] = temp[i++]; bBZvL  
a = temp; JL <}9K  
} else { CxO) d7c  
data[k] = temp[j--]; X%;,r 2g  
b = temp[j]; .AKx8=f  
} 3M^ /   
} <4Ak$ E %"  
} ?)9 6YX'  
Dj[D|%9a  
/** M+Dkn3bx  
* @param data Ouj5NL  
* @param l ;$86.2S>B  
* @param i 9AS,-5;XQ  
*/ k|w6&k3  
private void insertSort(int[] data, int start, int len) { j@9A!5<CCk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }!2|*Y  
} L,R9jMx?_  
} LG;xZQx'  
} p{.EFa>H  
} FC(m)S2  
RVD=CX  
堆排序: rt"\\sOlMB  
fz:F*zT1  
package org.rut.util.algorithm.support; P afmHXx  
'Y[\[]3[8  
import org.rut.util.algorithm.SortUtil; -2f0CAh~  
m0 `wmM  
/** k%hif8y  
* @author treeroot /H\ZCIu/7  
* @since 2006-2-2 o'W &gkb9  
* @version 1.0 $?0<rvGJ  
*/ 1y 6H2  
public class HeapSort implements SortUtil.Sort{ ~,ac{%8x  
7^S&g.A  
/* (non-Javadoc) D|OX]3~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SMnbI .0  
*/ w2 CgEJ %  
public void sort(int[] data) { U,)+wZJ  
MaxHeap h=new MaxHeap(); N!hp^V<7  
h.init(data); t0?\5q  
for(int i=0;i h.remove(); .NZ_dz$c  
System.arraycopy(h.queue,1,data,0,data.length); W(EU*~<UC  
} <>p\9rVp*^  
R D)dw  
private static class MaxHeap{ ^5xY&1j  
P[^!Uq[0n7  
void init(int[] data){ V<+d o|@F  
this.queue=new int[data.length+1]; ([s2F%S`@  
for(int i=0;i queue[++size]=data; >&p_G0-  
fixUp(size); #t9&X8:U  
} IA''-+9  
} $vicxE~-E  
0^zu T  
private int size=0; VYvHpsI  
*S*;rLH9c  
private int[] queue; <` HLG2  
g(|p/%H  
public int get() { )0!hw|0|  
return queue[1]; _bFX(~37z?  
} S__+S7]Nr  
XYf;72*  
public void remove() { ?f:FmgQk  
SortUtil.swap(queue,1,size--); _^Rf*G!  
fixDown(1); vfmKYiLp  
} )4"G1R`3  
file://fixdown D{\hPv  
private void fixDown(int k) { ASPfzW2  
int j; v;irk<5  
while ((j = k << 1) <= size) { P 3);R>j  
if (j < size %26amp;%26amp; queue[j] j++; km.xy_v  
if (queue[k]>queue[j]) file://不用交换 v"\Q/5p  
break; o)srE5  
SortUtil.swap(queue,j,k); D L<r2h  
k = j; Z-Zox-I1}-  
} ,253'53W)  
} JoIffI?{(D  
private void fixUp(int k) { *=)%T(^  
while (k > 1) { kC6J@t)  
int j = k >> 1; BPtU]Bv-  
if (queue[j]>queue[k]) Ig*!0(v5$  
break; x>7}>Y*(  
SortUtil.swap(queue,j,k); HtPasFrJ  
k = j; 6imDA]5N&  
} ]#KZ W)M  
} Ez+.tbEA,  
XoL9:s(m~  
} ;}WdxWw4  
`TBau:ElI  
} LQ373 j-  
~O&3OL:L  
SortUtil: Cz8=G;\  
AI/xOd!a  
package org.rut.util.algorithm; Q(>89*b&  
XF'K dz>p  
import org.rut.util.algorithm.support.BubbleSort; ig)rK<@*[  
import org.rut.util.algorithm.support.HeapSort; -"#;U`.oh7  
import org.rut.util.algorithm.support.ImprovedMergeSort; _.yBX\tf[  
import org.rut.util.algorithm.support.ImprovedQuickSort; =X]$J@j  
import org.rut.util.algorithm.support.InsertSort; >@` D@_v  
import org.rut.util.algorithm.support.MergeSort; ]t(;bD hT  
import org.rut.util.algorithm.support.QuickSort; `pOiv&>  
import org.rut.util.algorithm.support.SelectionSort; =;`+^  
import org.rut.util.algorithm.support.ShellSort; c5nl!0XX  
eBlVb*nmq  
/** ldO6W7 G|h  
* @author treeroot vrLI`3n]  
* @since 2006-2-2 1s"6  
* @version 1.0 WfL5. &  
*/ u#ag|b/C:  
public class SortUtil { d*4fl.  
public final static int INSERT = 1; q!t_qX7u  
public final static int BUBBLE = 2; ?1JS*LQ$  
public final static int SELECTION = 3; ^dM,K p  
public final static int SHELL = 4; zkA"2dh  
public final static int QUICK = 5; ;n?H/(6X8>  
public final static int IMPROVED_QUICK = 6; |Rf4^vN  
public final static int MERGE = 7; $&OoxC  
public final static int IMPROVED_MERGE = 8; 2 <y!3OeN  
public final static int HEAP = 9; ]KBzuz%  
(ylpH`  
public static void sort(int[] data) { )u7y.o  
sort(data, IMPROVED_QUICK); OjcxD5"v9  
} =I-SQI8  
private static String[] name={ _ )b:F=4j  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" q$Gf9&ZO  
}; MR}GxI  
NnRR"'  
private static Sort[] impl=new Sort[]{ )`, Bt  
new InsertSort(), ou0(C `  
new BubbleSort(), +vY8HQ|v  
new SelectionSort(), ]X ,f  
new ShellSort(), gf$5pp-  
new QuickSort(), KU|dw^Yk  
new ImprovedQuickSort(), sL[&y'+  
new MergeSort(), /J")S?. [u  
new ImprovedMergeSort(), WPPz/c|j  
new HeapSort() MdV-;uf  
}; :7 Ro9z8  
N<}{oIsZ+  
public static String toString(int algorithm){ Y_ b;1RN  
return name[algorithm-1]; no~hYy W2  
} 5|._K(M  
f5.rzrU  
public static void sort(int[] data, int algorithm) { 60ccQ7=  
impl[algorithm-1].sort(data); #T &z`  
} qv>?xKSm  
wxYB-Wh<  
public static interface Sort { 6nRXRO  
public void sort(int[] data); j-e/nZR@  
} |j3mI\ANF  
aY&He~  
public static void swap(int[] data, int i, int j) { @8a1a3_F  
int temp = data; |1iCt1~U  
data = data[j]; v!{mpF  
data[j] = temp; ?fr -5&,  
} @Fv"j9j-3G  
} {x$jGiag+8  
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3+5=?,请输入中文答案:八 正确答案:八