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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。 ym'!f|9AA  
插入排序: %$67*pY'JH  
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package org.rut.util.algorithm.support; '~zi~Q7M  
q2*1Gn9!j  
import org.rut.util.algorithm.SortUtil; $J#Z`%B^y  
/**  vPAL,  
* @author treeroot hP$5>G(3  
* @since 2006-2-2 5 hW#BB  
* @version 1.0 jOm7:+H  
*/ e'.CIspN  
public class InsertSort implements SortUtil.Sort{ C]Q}HI#G  
ubM  N  
/* (non-Javadoc) f( <O~D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W#\{[o  
*/ 9V>C %I  
public void sort(int[] data) { v1=N?8Hz1  
int temp; Cng_*\=O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FSYs1Li_C  
} |\W~+}'g~  
} b(t8TR#-  
} H\$uRA oo*  
-FW^fGS+  
} u-*z#e_L0  
`x;m@\R  
冒泡排序: S2>$S^[U  
HQMug  
package org.rut.util.algorithm.support; /z:1nq  
k}!'@  
import org.rut.util.algorithm.SortUtil; xXSfYW  
nX8ulGGs  
/** <,Mf[R2N>  
* @author treeroot L.8`5<ITw  
* @since 2006-2-2 uw(Ml=  
* @version 1.0 PW\me7iCz  
*/ ,s/laZ)V  
public class BubbleSort implements SortUtil.Sort{ FcyF E~>2  
8~3I^I_v  
/* (non-Javadoc) `cPZsL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oWEzzMRz  
*/ MHJRBn{}  
public void sort(int[] data) { 03"FK"2S  
int temp; V!NRBXg  
for(int i=0;i for(int j=data.length-1;j>i;j--){ rp|A88Q/!  
if(data[j] SortUtil.swap(data,j,j-1); G!lF5;Ad`  
} a*uG^~ ).  
} >ByqM{?  
} JF=T_SH^U  
} z<gII~%  
TeFi[1  
} \"w+4}  
wj5,_d)  
选择排序: PbFbi hg  
Q 7\j:.  
package org.rut.util.algorithm.support; POf xN.  
t#w,G  
import org.rut.util.algorithm.SortUtil; g!OcWy)7  
KNR7Igw?}  
/** bz.sWBugR  
* @author treeroot Y^y:N$3$\  
* @since 2006-2-2 )Br#R:#  
* @version 1.0 |(CgX6 l3  
*/ U2CC#,b!(  
public class SelectionSort implements SortUtil.Sort { 8fktk?|  
q/ (h{cq  
/* x+b.9f4xJ  
* (non-Javadoc) ~y"OyOi&  
* VCwC$ts  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yv0y8Vz@  
*/ ?Ezy0>j  
public void sort(int[] data) { wN^^_  
int temp; &.qLE  
for (int i = 0; i < data.length; i++) { P)LOAe1'  
int lowIndex = i; oTrit_@3  
for (int j = data.length - 1; j > i; j--) { mP's4  
if (data[j] < data[lowIndex]) { BqUwvB4  
lowIndex = j; #^(Yw|/K  
} sE ^YOT<  
} ^# 4e_&4  
SortUtil.swap(data,i,lowIndex); ^f9@ =I  
} /:"^,i\t  
} ]c bXI  
g:@4/+TSt  
} F>GPi!O  
[f}`reRlZ  
Shell排序: .{|SKhXk  
*\cU}qjk  
package org.rut.util.algorithm.support; 1 1(GCu  
Cq'{ %  
import org.rut.util.algorithm.SortUtil; HTMg{_r(%  
7P]i|Q{  
/** bZ^'_OOn  
* @author treeroot Rt5pl,Nf  
* @since 2006-2-2 v6Wz:|G/u  
* @version 1.0 'K01"`#  
*/ lJ,\^\q  
public class ShellSort implements SortUtil.Sort{ 8kvA^r`  
>V4r '9I  
/* (non-Javadoc) e)m6xiZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :))&"GY  
*/ 1Zi` \N4T  
public void sort(int[] data) { ]9c{qm}y  
for(int i=data.length/2;i>2;i/=2){ Mpco8b-b  
for(int j=0;j insertSort(data,j,i); G~ LQM  
} KZa6*,, s  
} (!qfd Qq#  
insertSort(data,0,1); C6h[L  
} %LD(S*>7  
mn*}U R  
/** PZO.$'L|7  
* @param data @(+\*]?^&  
* @param j \DWKG~r-%  
* @param i sx]{N  
*/ Qvel#*-4  
private void insertSort(int[] data, int start, int inc) { J3e'?3w[  
int temp; kD7'BP/#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .}T-R?  
} W; os4'h$  
} VJl0UM3{J  
} 0C\cM92o  
s,AJR [  
} salDGsW^  
jbUg?4k!  
快速排序: (bpRX$is  
`^ a:1^  
package org.rut.util.algorithm.support; 0AF,} &$  
:Nwv &+  
import org.rut.util.algorithm.SortUtil; ` N R,8F  
Q7{{r&|t&  
/** +$#XV@@~  
* @author treeroot aof'shS8  
* @since 2006-2-2 jeJspch+#  
* @version 1.0 c;!| =  
*/ h9!4\{V;h  
public class QuickSort implements SortUtil.Sort{ [9j,5d&m  
PgHmOs  
/* (non-Javadoc) Qr7|;l3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,4 q^(  
*/ _wX(OB  
public void sort(int[] data) { 3<N2ehi?  
quickSort(data,0,data.length-1); {v|ib112;  
} )X:Sfk  
private void quickSort(int[] data,int i,int j){ og~a*my3  
int pivotIndex=(i+j)/2; 3x 7fa^umR  
file://swap 5wha _Yet  
SortUtil.swap(data,pivotIndex,j); o iC@ /  
!&3"($-U3G  
int k=partition(data,i-1,j,data[j]); fY?:SPR+  
SortUtil.swap(data,k,j); EyA(W;r.  
if((k-i)>1) quickSort(data,i,k-1); qR_Np5nHF  
if((j-k)>1) quickSort(data,k+1,j); Fy!s$!\C0  
9_.pLLx  
} @F*z/E}e  
/** <|]i3_Z  
* @param data U2tgBF?)A  
* @param i r`.Bj0  
* @param j Cbl>eKw  
* @return p GF;,h>  
*/ g{uiY|  
private int partition(int[] data, int l, int r,int pivot) { )EQI>1_  
do{ m-+>h:1b|9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); FP7N^HVBG=  
SortUtil.swap(data,l,r); #<U@SMv  
} 9ZR"Lo>3e+  
while(l SortUtil.swap(data,l,r); _qpIdQBo  
return l; >{-rl@^H:  
} fe"w--v  
>Z<ZT  
} 7GG`9!l]D  
b'` XFB#V  
改进后的快速排序: B1s&2{L6K  
{7MY*&P$,  
package org.rut.util.algorithm.support; mG\9Qkom|  
/~7M @`1  
import org.rut.util.algorithm.SortUtil; mG@[~w+  
+2}Ar<elP  
/** R>1oF]w  
* @author treeroot `ZO5-E  
* @since 2006-2-2 i,% N#  
* @version 1.0 Pgq(yPC  
*/ vpOGyvI  
public class ImprovedQuickSort implements SortUtil.Sort { ^k{/Yl  
4:733Q3oK  
private static int MAX_STACK_SIZE=4096; m=/HUt3(&0  
private static int THRESHOLD=10; p_e x  
/* (non-Javadoc) (n_.bSI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $uUyp8F  
*/ }H saJ=1U  
public void sort(int[] data) { RBg2iG$ 8|  
int[] stack=new int[MAX_STACK_SIZE]; 4 >H0a  
U3v~R4  
int top=-1; =CS$c?  
int pivot; *f{4 _ts  
int pivotIndex,l,r; ,KF>@3f  
V$;`#J$\b  
stack[++top]=0; e6qIC*C!  
stack[++top]=data.length-1; rg#/kd<?[V  
r2PN[cLu|  
while(top>0){ (2"4PU8  
int j=stack[top--]; -*Qg^1]i+  
int i=stack[top--]; B<h4ZK%  
(!0_s48f  
pivotIndex=(i+j)/2; *UJB *r  
pivot=data[pivotIndex]; _ Qek|>  
,I+O;B:0  
SortUtil.swap(data,pivotIndex,j);  G;A  
]W%rhppC  
file://partition qoZAZ&|HI  
l=i-1; S;2UcSsQl  
r=j; D+oV( Pw,  
do{ {ehYE^%N  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x^Qij!mB%  
SortUtil.swap(data,l,r); t\!5$P  
} RZSEcRlN  
while(l SortUtil.swap(data,l,r); iEy2z+/"^  
SortUtil.swap(data,l,j); cIkA ~F  
UYQ@ub  
if((l-i)>THRESHOLD){ N"Y%* BkH  
stack[++top]=i; f(K1 ,L:&7  
stack[++top]=l-1; glKPjL*  
} }g%&}`%'  
if((j-l)>THRESHOLD){ 8^^ehaxy  
stack[++top]=l+1; P9Eh, j0_  
stack[++top]=j; h"}F3E  
} RC8-6s& ln  
sk~7"v{Y.  
} i12G\Ye  
file://new InsertSort().sort(data); j.+,c#hFo  
insertSort(data); IBNb!mPu%  
}  #.Ly  
/** 4"{g{8  
* @param data //Xz  
*/ 20`XklV  
private void insertSort(int[] data) { L]BTX]  
int temp; 73tjDO7d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d)XT> &  
} 7ruWmy;j  
} >Yv#t.!  
} Qt^6w}&  
e U-A_5  
} /8hjs{(;  
b+Vlq7Bc  
归并排序: !4t%\N6Ib  
oW(8bd)  
package org.rut.util.algorithm.support; [`KQ \4u  
 wJvk  
import org.rut.util.algorithm.SortUtil; G`;mSq6i  
F%{z E ANm  
/** ~Sd,Tu%:  
* @author treeroot 5VfpeA `  
* @since 2006-2-2 y4!fu<[i  
* @version 1.0 'Nx"_jQ  
*/ $D f1t  
public class MergeSort implements SortUtil.Sort{ +s [_ 4  
uHDUuK:Ur  
/* (non-Javadoc) m^)\P?M5|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fKuaom9  
*/ ypfjF@OT  
public void sort(int[] data) { }2Im?Q  
int[] temp=new int[data.length]; 8-K4*(-dL  
mergeSort(data,temp,0,data.length-1); {z'Gg  
} R9+f^o` W  
Ag1nxV1M$  
private void mergeSort(int[] data,int[] temp,int l,int r){ W^3'9nYU  
int mid=(l+r)/2; W$Aypy  
if(l==r) return ; F{}:e QD  
mergeSort(data,temp,l,mid); 5pRVA  
mergeSort(data,temp,mid+1,r); ;hFB]/.v  
for(int i=l;i<=r;i++){ ~$Z_#,|i?  
temp=data; o i~,}E_  
} "DJ%Yo  
int i1=l; r&L1jT.  
int i2=mid+1; Vr&v:8:wb  
for(int cur=l;cur<=r;cur++){ pcm1IwR`  
if(i1==mid+1) tfe'].uT  
data[cur]=temp[i2++]; Z@Qf0 c  
else if(i2>r) 2"Y=*s  
data[cur]=temp[i1++]; P|aSbsk:I<  
else if(temp[i1] data[cur]=temp[i1++]; FOcDBCrOe  
else Ew9 MWlk  
data[cur]=temp[i2++]; >v%UV:7ap  
} Yt4v}{+  
} )IE) a[wo  
M49Hm[0(  
} VC!g,LU|-  
z]O>`50Q  
改进后的归并排序: o`}8ZtD  
2TaHWw<A  
package org.rut.util.algorithm.support; zH@+\#M  
[|HQfTp$  
import org.rut.util.algorithm.SortUtil; gti=GmL(L  
6(HJYa  
/** L+)mZb&  
* @author treeroot qv/chD`C  
* @since 2006-2-2 x/92],.Mz  
* @version 1.0 HsK5 2<  
*/ #- d-zV*  
public class ImprovedMergeSort implements SortUtil.Sort { } x'o`GuUf  
c;R .rV<  
private static final int THRESHOLD = 10; 8EI&}I  
Zo,]Dx  
/* a+\s0Qo<  
* (non-Javadoc) l02aXxT)]  
* P$G|o|h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mz6|#P}.s  
*/ 9893{}\cB  
public void sort(int[] data) { +T7FG_  
int[] temp=new int[data.length]; K%vGfQ8Er-  
mergeSort(data,temp,0,data.length-1); UAdj [m61  
} a.AEF P4N  
j!`2Z@  
private void mergeSort(int[] data, int[] temp, int l, int r) { zU};|Zw  
int i, j, k; =iPQ\_ON@  
int mid = (l + r) / 2; u\UI6/  
if (l == r) cuQ=bRIb  
return; z.kBQ{P  
if ((mid - l) >= THRESHOLD) 2wgdrO|B  
mergeSort(data, temp, l, mid); {|@N~c+  
else Wy$Q!R=i  
insertSort(data, l, mid - l + 1); 7jF2m'(  
if ((r - mid) > THRESHOLD) 2?owXcbx  
mergeSort(data, temp, mid + 1, r); oga0h'  
else ]^l-k@  
insertSort(data, mid + 1, r - mid); Xc]Q_70O  
 Qp>Q-+e0  
for (i = l; i <= mid; i++) { PFeK;`[  
temp = data; O,KlZf_B  
} =TXc - J  
for (j = 1; j <= r - mid; j++) { ~9+\  
temp[r - j + 1] = data[j + mid]; k+cHx799  
} cGjkx3l*  
int a = temp[l]; eD 7Rv<  
int b = temp[r]; Z?'){\$*  
for (i = l, j = r, k = l; k <= r; k++) { knZ<V%/e  
if (a < b) { 1uhSP!b  
data[k] = temp[i++]; i'vjvc~  
a = temp; q]t^6m&-  
} else { !GVxQll[f  
data[k] = temp[j--]; ' 9  
b = temp[j]; Yy0m &3[  
} <8/lHQ^\)  
} w+ tO@  
} rx;zd?  
k$ } 6Qd  
/**  WR"p2=  
* @param data x68s$H  
* @param l ~# |p=Y  
* @param i /d-7n|#E  
*/ *CXVA&?  
private void insertSort(int[] data, int start, int len) { \(ZOt.3!J  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); t\C[mw  
} YY<e]CriU  
} Q /\Hc  
} b; 4;WtBO  
} _qqJ>E<0  
\7,'o] >M-  
堆排序: v|mZcAz  
c}FZb$q#  
package org.rut.util.algorithm.support; Yt;.Z$i ,  
tI(co5 W  
import org.rut.util.algorithm.SortUtil; .{W)E  
c^8y/wfok  
/** n-_-;TYH  
* @author treeroot ^KMZB  
* @since 2006-2-2 U9B|u`72  
* @version 1.0 %Gs!oD  
*/ /=qn1  
public class HeapSort implements SortUtil.Sort{ >j$CM:w  
= 8%+$vX  
/* (non-Javadoc) bx<7@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /P|jHK|{  
*/ FeFH_  
public void sort(int[] data) { #VEHyz6P  
MaxHeap h=new MaxHeap(); I2'UC) 0  
h.init(data); _sCpyu  
for(int i=0;i h.remove(); 2xd G&}$fa  
System.arraycopy(h.queue,1,data,0,data.length); P1ab2D  
} ]Z\.Vx  
R#Bdfmld q  
private static class MaxHeap{ ;=6~,k)  
u-. _;  
void init(int[] data){ #`4ma:Pj  
this.queue=new int[data.length+1]; jM3{A;U2  
for(int i=0;i queue[++size]=data; <&rvv4*H  
fixUp(size); bmO[9 )G  
} RtR]9^:~  
} )y:~T\g  
VscEdtkd  
private int size=0; uIvE~<  
fz8eL:i:  
private int[] queue; cf0D q~G  
HIi 5kv]}|  
public int get() { >2~q{e  
return queue[1]; Ui 7S8c#tH  
} Ij}RlYQz  
Vj"B#  
public void remove() { PQ|kE`'  
SortUtil.swap(queue,1,size--); }ya9 +?I  
fixDown(1); pRj1b^F5y  
} D[)g-_3f6<  
file://fixdown Dw^d!%Ala  
private void fixDown(int k) { ]|[oL6"  
int j; ;Z"6ve4  
while ((j = k << 1) <= size) { ]J C}il_b  
if (j < size %26amp;%26amp; queue[j] j++; T0Q)}%L  
if (queue[k]>queue[j]) file://不用交换 yA!#>u%g  
break; |,Y(YSg.  
SortUtil.swap(queue,j,k); A@ EeX4N  
k = j; a<M<) {$u  
} ^60BQ{ne  
} iFW)}_.  
private void fixUp(int k) { Q': }'CI  
while (k > 1) { Xb=9~7&,$  
int j = k >> 1; R1FBH:Iu  
if (queue[j]>queue[k]) _{6QvD3kg.  
break; X/TuiKe  
SortUtil.swap(queue,j,k); [(Pm\o  
k = j; @twClk.s  
} (yCF pb  
} 8|w_PP1oE  
iP;X8'< BC  
} 0zaE?dA]  
(<pc4#B@*  
} =$IjN v(?  
40oRO0p  
SortUtil: -Vk+zEht  
nqt;Ge M  
package org.rut.util.algorithm; &V[m{.  
q7C>A`w  
import org.rut.util.algorithm.support.BubbleSort; [|\~-6"7N|  
import org.rut.util.algorithm.support.HeapSort; \&J7>vu^y  
import org.rut.util.algorithm.support.ImprovedMergeSort; K<KyX8$P0  
import org.rut.util.algorithm.support.ImprovedQuickSort; .S17O}  
import org.rut.util.algorithm.support.InsertSort; n97A'"'wz  
import org.rut.util.algorithm.support.MergeSort; wz5xJ:Tj  
import org.rut.util.algorithm.support.QuickSort; keEyE;O}u  
import org.rut.util.algorithm.support.SelectionSort; [MYd15  
import org.rut.util.algorithm.support.ShellSort; eW]K~SPd7  
h \b]>q@  
/** B]q &?~  
* @author treeroot ~&=-*  
* @since 2006-2-2 }N1Z7G  
* @version 1.0 jx&pRjP  
*/ ]C-hl}iq  
public class SortUtil { ]%3o"|  
public final static int INSERT = 1; g6k@E,cI_  
public final static int BUBBLE = 2; YsXP$y]g-  
public final static int SELECTION = 3; z{cIG8z  
public final static int SHELL = 4; ]n0kO&  
public final static int QUICK = 5; vW 0m%  
public final static int IMPROVED_QUICK = 6; b,8W |  
public final static int MERGE = 7; Pm6/sO  
public final static int IMPROVED_MERGE = 8; lN)U8  
public final static int HEAP = 9; cejSGsW6q  
C XZm/^  
public static void sort(int[] data) { n0kBLn  
sort(data, IMPROVED_QUICK); -82Rz   
} zo&'2I  
private static String[] name={  [ottUS@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |<P]yn  
}; `AeId/A4n  
`(<XdlOj  
private static Sort[] impl=new Sort[]{ ?ZDXT2b~~  
new InsertSort(), pm,&kE  
new BubbleSort(), ,L^eD>|j5  
new SelectionSort(), b;O]@kBB  
new ShellSort(), |r!G(an1x4  
new QuickSort(), ad8kUHf  
new ImprovedQuickSort(), ^$Dpdz I  
new MergeSort(), s"<k) Xi  
new ImprovedMergeSort(), J_OIU#-B  
new HeapSort() el39HB$  
}; dy;Ue5  
C".&m  
public static String toString(int algorithm){ ZJ@M}-4O1  
return name[algorithm-1]; p mcy(<  
} J (Yfup  
0ejx; Mum  
public static void sort(int[] data, int algorithm) { n|Vs27  
impl[algorithm-1].sort(data);  a= ;7  
} &96I4su  
^wCjMi(sj  
public static interface Sort { PmO utYV  
public void sort(int[] data); f*7/O |Gp  
} F_U3+J>  
` ZXX[&C  
public static void swap(int[] data, int i, int j) { (Kd;l &8  
int temp = data; &F*s.gL  
data = data[j]; B@` 87  
data[j] = temp; abUvU26t  
} }kdYR#{s  
} V}=9S@$o  
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