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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。 FLlL0Gu  
插入排序: d #-<=6  
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package org.rut.util.algorithm.support; RK]."m0c~#  
2wh{[Q2f  
import org.rut.util.algorithm.SortUtil; 6~+?DIc  
/** PI" )^`  
* @author treeroot PJcz] <  
* @since 2006-2-2 f1VA61z{)  
* @version 1.0 CV,[x[L# {  
*/ }Sb&ux  
public class InsertSort implements SortUtil.Sort{ u`X}AKC  
=HvLuVc  
/* (non-Javadoc) Yc'7F7.<6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (aH_K07  
*/ BUKh5L  
public void sort(int[] data) { |7T!rnr  
int temp; gs|%3k|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'uOp?g'7  
} Z.0^:rVp~  
} My'6 yQL  
} 6{I5 23g  
sXSZ#@u,WN  
} I1(, J  
)6mv 7M{  
冒泡排序: <BN)>NqM  
U `"nX)$  
package org.rut.util.algorithm.support; L``K. DF  
Icf@uQ6  
import org.rut.util.algorithm.SortUtil; ffyKAZ{]po  
STB=#z  
/** (5N&bh`E  
* @author treeroot 7"y"%+*/  
* @since 2006-2-2 s.I=H^ T  
* @version 1.0  /m*vY`  
*/ (sn|`k3I  
public class BubbleSort implements SortUtil.Sort{ oZ~M`yOz.  
/T*]RO4%>]  
/* (non-Javadoc) 7b T5-=.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 18!0H l>  
*/ nyPA`)5F0  
public void sort(int[] data) { mv xg|<  
int temp; 6q8qq/h)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6i \b&  
if(data[j] SortUtil.swap(data,j,j-1); @*l}2W  
} T, gMc  
} 4 ITSDx  
} rC<m6  
} y#Ch /Jg?|  
I)O-i_}L&K  
} c66Iy"  
PxK  
选择排序: U]ouBG8/  
TZZ qV8  
package org.rut.util.algorithm.support; obX|8hTL%  
2Sb~tTGz79  
import org.rut.util.algorithm.SortUtil; P*(lc:  
f=J#mmH w$  
/** jvm "7)h  
* @author treeroot T.W/S0#j3  
* @since 2006-2-2 ^ tm,gh  
* @version 1.0 R{6.O+j`  
*/ oc-7gz)  
public class SelectionSort implements SortUtil.Sort { BbiBtU  
S3j/(BG  
/* m&|?mTo>m  
* (non-Javadoc) JVTG3:zD  
* x_(B7ob  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mk[_yqoCO  
*/ Q9#$4  
public void sort(int[] data) { vC J  
int temp; **0Y*Ax@  
for (int i = 0; i < data.length; i++) { Nc]oA Y  
int lowIndex = i; } "y{d@  
for (int j = data.length - 1; j > i; j--) { v=SC*  
if (data[j] < data[lowIndex]) { -_pI:K[  
lowIndex = j; /2?GRwU~P  
}  HPwmi[  
} D@d/O  
SortUtil.swap(data,i,lowIndex); $o1G xz  
} R0\E?9P  
} Dw6Q2Gnv  
Q} f=Ye(&}  
} HHoh//(\  
M*+_E8Lh  
Shell排序: ^i#q{@g  
't^OIil  
package org.rut.util.algorithm.support; (h|l$OL/  
MWsBZJRr  
import org.rut.util.algorithm.SortUtil; &gcKv1a\  
kY4riZnm  
/**  @;d(>_n  
* @author treeroot C8@SuJ  
* @since 2006-2-2 (? YTQ8QR  
* @version 1.0 hMeE@Q0  
*/ R^fVw Dl\  
public class ShellSort implements SortUtil.Sort{ Ck(D: % ~s  
n>Q/XQXB  
/* (non-Javadoc) #$X_,P|D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EQz`o+  
*/ Uq0RJ<n  
public void sort(int[] data) { pz@_%IUS  
for(int i=data.length/2;i>2;i/=2){ [D?RL `ZF  
for(int j=0;j insertSort(data,j,i); ;wgm 'jr  
} ;VYL7Xu](  
} _~=X/I R  
insertSort(data,0,1); Qy5\qW'  
} UFm E`|le  
^ ,U9N  
/** ?fc({zb  
* @param data 4vW:xK  
* @param j W<u63P  
* @param i l)HF4#Bs  
*/ !ZD[ $lt+  
private void insertSort(int[] data, int start, int inc) { 4=>/x90y  
int temp; J/M1#sE  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rM<c;iQ  
} Bj;Fy9[yb  
} *pyi;  
} T Jp(  
,57g_z]V  
} {SbA(a?B  
ePa1 @dI  
快速排序: {(Drw~/@  
2W~,,$ G  
package org.rut.util.algorithm.support; FG38)/  
q[ ] "`?  
import org.rut.util.algorithm.SortUtil; wH3FCfvm  
 }aRV)F  
/** b`PAOQ  
* @author treeroot Gyk>5Q}}  
* @since 2006-2-2 KaZ*HPe(  
* @version 1.0 NELQo#kjZ  
*/ d /+sR@\  
public class QuickSort implements SortUtil.Sort{ ,Si\ky7L  
~*ZB2  
/* (non-Javadoc) DAj@wn3K?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , pq<.?&E  
*/ WhMr'l/e  
public void sort(int[] data) { WXp=>P[  
quickSort(data,0,data.length-1); #'mb9GWD3  
} `f}}z5  
private void quickSort(int[] data,int i,int j){ z%Op_Ddp  
int pivotIndex=(i+j)/2; 'sn%+oN  
file://swap $Ud-aRlD  
SortUtil.swap(data,pivotIndex,j); xV:.)Dq9  
E%:!* 9  
int k=partition(data,i-1,j,data[j]); P>z k  
SortUtil.swap(data,k,j); |qE"60&"}  
if((k-i)>1) quickSort(data,i,k-1); vtc} )s\  
if((j-k)>1) quickSort(data,k+1,j); +M/04  
DQDt*Uj,  
} U\&kT/6vh  
/** !:,d^L!bh  
* @param data :@I?JSi  
* @param i ?"$W=*P\o  
* @param j ~Us1F=i_Q  
* @return =#[_8)q  
*/ 9t(B{S  
private int partition(int[] data, int l, int r,int pivot) { C0[Rf.*  
do{ !u.{<51b  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LDN'o1$qo  
SortUtil.swap(data,l,r); D9B?9Qt2[  
} J6;^:()  
while(l SortUtil.swap(data,l,r); N#Bg`:!  
return l; >G92k76G  
} s03 DL  
4f ~CG r  
} [aU#"k)M  
%;(+s7  
改进后的快速排序: >|KfO>  
j0L9Q|s  
package org.rut.util.algorithm.support; W1$B6+}Z0V  
ez%RWck  
import org.rut.util.algorithm.SortUtil; 'D#}ce)s#  
',n;ag`c  
/** _|D8~\y  
* @author treeroot 9aD6mp  
* @since 2006-2-2 6C9KT;6  
* @version 1.0 lb2mWsg"  
*/ ]^Z7w`=%5  
public class ImprovedQuickSort implements SortUtil.Sort { cpz}!D  
PQ.xmg2  
private static int MAX_STACK_SIZE=4096; a"&@G=M@d  
private static int THRESHOLD=10; R!lNm,i  
/* (non-Javadoc) P.$U6cq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q]=. Aik  
*/ }P#%aE&-  
public void sort(int[] data) { .!RBh LH_g  
int[] stack=new int[MAX_STACK_SIZE]; FjRJSMwO,  
;'!U/N;-  
int top=-1; ;Jr6  
int pivot; fu}NH \{  
int pivotIndex,l,r; ]|<PV5SY3.  
f/H rO6~k%  
stack[++top]=0; c!T^JZBb  
stack[++top]=data.length-1; St-:+=V_  
M7/P&d  
while(top>0){ CTp~bGIv!=  
int j=stack[top--]; m <IPi <  
int i=stack[top--]; YYr &Jc j  
o<1e-  
pivotIndex=(i+j)/2; Nt,)5_K <  
pivot=data[pivotIndex]; xcnHj1r-o'  
x=Qy{eIe  
SortUtil.swap(data,pivotIndex,j); ~` @dI  
A9qCaq{  
file://partition oF,XSd  
l=i-1; TC?kuQI  
r=j; NoO>CjeFb  
do{ 'Y(#Yxc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1 >jG*tr  
SortUtil.swap(data,l,r); O*d&H;;  
} |Yh-`~~A"  
while(l SortUtil.swap(data,l,r); GK)3a 9;  
SortUtil.swap(data,l,j); BF<7.<,  
V2g,JFp&  
if((l-i)>THRESHOLD){ Ziu f<X{  
stack[++top]=i; kFgN^v^t  
stack[++top]=l-1; 7{RI`Er`  
} j|FGb:  
if((j-l)>THRESHOLD){ #bUWF|zfT  
stack[++top]=l+1; .{k(4_Q?I  
stack[++top]=j; g-E!*K  
} -b~MQ/, 2  
@ v/%^  
} 1 iS9f~  
file://new InsertSort().sort(data); 9-o{[  
insertSort(data); >C+0LF`U  
} ><"5 VwR  
/** E}lU?U5i  
* @param data }r]WB)_w  
*/ x,E#+ m  
private void insertSort(int[] data) { ->n<9  
int temp; jec03wH_0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &UP@Sr0D7  
} :>nk63V (  
} 8H./@~_ =  
} |}^[f]  
8V_ ]}W  
} |.=Ee+HZ  
daWmF  
归并排序: "sz LTC]*6  
V:6#IL  
package org.rut.util.algorithm.support; `=uCp^ +v  
v!t*Ng  
import org.rut.util.algorithm.SortUtil; 7 tF1g=\  
(*&6XTV(  
/** c[!e*n!y  
* @author treeroot Id]WKL:  
* @since 2006-2-2 t"2WJ-1k}  
* @version 1.0 fdho`juFa  
*/ 1KruGq~  
public class MergeSort implements SortUtil.Sort{ AS|gi!OVA  
L}nj#z4g  
/* (non-Javadoc) ?@|1>epgd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hOfd<k\A  
*/ 9Vzk:zOT  
public void sort(int[] data) { }tft@,dIC  
int[] temp=new int[data.length]; zN].W\("\  
mergeSort(data,temp,0,data.length-1); u~LisZ&tP  
} eQcy'GA06  
^>GL<1 1  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1kio.9NIp  
int mid=(l+r)/2; ?P<&8eY  
if(l==r) return ; s?~Abj_  
mergeSort(data,temp,l,mid); ;Zj Qy,H%  
mergeSort(data,temp,mid+1,r); zY[6Ia{L  
for(int i=l;i<=r;i++){ )#ic"UtR  
temp=data; U~Ni2|}\C9  
} gD=s~DgN)  
int i1=l; dAEz hR[=  
int i2=mid+1; %E1~I\n:F  
for(int cur=l;cur<=r;cur++){ 5tP0dQYd  
if(i1==mid+1) K_]LK  
data[cur]=temp[i2++]; eX?o 4>  
else if(i2>r) v&H&+:<  
data[cur]=temp[i1++]; '  AeU  
else if(temp[i1] data[cur]=temp[i1++]; WRVKh  
else 4I:Jb;k>  
data[cur]=temp[i2++]; g/`i:=  
} ^%go\ C ;  
} xd(AUl4qY  
&`@,mUi{Ac  
} eqeVz`  
&JfyXM[]  
改进后的归并排序: +]uy  
1)u= &t,  
package org.rut.util.algorithm.support; 5 Nl>4d`  
K/MIDH  
import org.rut.util.algorithm.SortUtil; @sfV hWG  
]d$)G4X 1  
/** eDaVoc3  
* @author treeroot O;H/15j:sK  
* @since 2006-2-2 .]r[0U  
* @version 1.0 U?#6I-  
*/ G92=b *x/  
public class ImprovedMergeSort implements SortUtil.Sort { CXUNdB  
7t@jj%F  
private static final int THRESHOLD = 10; Yv"uIj+']  
i.F[.-.  
/* z W+wtYV4  
* (non-Javadoc) HkEp}R  
* c%xxsq2n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4`Fbl]Q   
*/ mT!~;] RrF  
public void sort(int[] data) { [W^6=7EO  
int[] temp=new int[data.length]; IDLA-Vxo  
mergeSort(data,temp,0,data.length-1);  zKT \i  
} Xj !0jF33  
Nkv2?o>l  
private void mergeSort(int[] data, int[] temp, int l, int r) { @Ki`g(],P  
int i, j, k; uidE/7  
int mid = (l + r) / 2; Q8\Ks|u]  
if (l == r) yGS._;#R  
return; i~K~Czmok+  
if ((mid - l) >= THRESHOLD) |$1j;#h  
mergeSort(data, temp, l, mid); Ui?t@.  
else Bb-x1{t  
insertSort(data, l, mid - l + 1); Ma{|+\Q.Z  
if ((r - mid) > THRESHOLD) a 2).Az  
mergeSort(data, temp, mid + 1, r); (5Cm+Sy  
else jriliEz;f  
insertSort(data, mid + 1, r - mid); VaQ}XM  
N|7._AR2  
for (i = l; i <= mid; i++) { [0J0<JnK  
temp = data; 8(g:i#~  
} 0 'L+9T5  
for (j = 1; j <= r - mid; j++) { #>>-:?X  
temp[r - j + 1] = data[j + mid]; rJ<v1Yb  
} CZbp}:|  
int a = temp[l]; n*_FC  
int b = temp[r]; {},G xrQm  
for (i = l, j = r, k = l; k <= r; k++) { F'`L~!F  
if (a < b) { $vc:u6I[  
data[k] = temp[i++]; >TtkG|/U-T  
a = temp; E@[`y:P  
} else { a2p<HW;)m  
data[k] = temp[j--]; \/lS!+~'']  
b = temp[j]; iL5+Uf)E3  
} }0f[x ?V  
} %} \@Wk~  
} uWMAXGL  
e'7!aysj  
/** ,gRsbC  
* @param data .!=g  
* @param l BH%eu 7`t  
* @param i lf Wxdi  
*/ FtY*I&  
private void insertSort(int[] data, int start, int len) { zXMIDrq  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >Wy@J]Y#  
} qY0GeE>N  
} 6'?Y]K  
} }vc C4 =t/  
} Yo:>m*31  
sFB; /*C  
堆排序: Ym0Xl(Se  
9Y*6AaKE6  
package org.rut.util.algorithm.support; ^V>sNR  
Z mYp!B_~  
import org.rut.util.algorithm.SortUtil; }R.cqk\qa^  
})s s.  
/** kGX`y.-[  
* @author treeroot #9p{Y}2#  
* @since 2006-2-2 gxL5%:@  
* @version 1.0 '<8ewU  
*/ cH"M8gP#  
public class HeapSort implements SortUtil.Sort{ 0y|}}92:  
Q{mls  
/* (non-Javadoc) c+-L>dsss  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0UlaB sv  
*/ .$S`J2Y  
public void sort(int[] data) { 0nA17^W  
MaxHeap h=new MaxHeap(); 0$* z   
h.init(data); $NJi]g|<3  
for(int i=0;i h.remove(); nG{j x_{`  
System.arraycopy(h.queue,1,data,0,data.length); O/l|\n  
} RQ9T<t42  
y]M/oH  
private static class MaxHeap{ 'J]V"Z)  
4z[Z3|_V  
void init(int[] data){ aI+:rk^  
this.queue=new int[data.length+1]; pD.7ib^  
for(int i=0;i queue[++size]=data; F]SexP4:A  
fixUp(size); Qh)@-r3  
} ToDN^qE+  
} =^=9z'u"=  
WynHcxC  
private int size=0; 7P!/jaw xb  
$7M64K{  
private int[] queue; ]@M$.msg@  
Yq<D(F#qx  
public int get() { j:$2 ,?|5  
return queue[1]; A^%z;( 0p  
} #.a4}ya19  
T" 8>6a@}E  
public void remove() { 4$d|}ajH  
SortUtil.swap(queue,1,size--); $U"/.Mh\  
fixDown(1); %+FM$xyJ  
} o<@2zhuhrx  
file://fixdown )v8;\1`s:  
private void fixDown(int k) { NzNAhlXj3  
int j; VLu_SXlo*  
while ((j = k << 1) <= size) { xWn.vSos  
if (j < size %26amp;%26amp; queue[j] j++; tCtR(mG=A  
if (queue[k]>queue[j]) file://不用交换 [,|KVc=&H  
break; r/:s2 oQ  
SortUtil.swap(queue,j,k); 7Cp>iWV  
k = j; Vg6?a  
} x-CY G?-x  
} JB''Ujyi  
private void fixUp(int k) { !bT0kP$3}  
while (k > 1) { ZEUd?"gaR  
int j = k >> 1; R 5bt~U  
if (queue[j]>queue[k]) RAXqRP,iw  
break; tNmH*"wR<  
SortUtil.swap(queue,j,k); {eqUEdC  
k = j; H ,KU!1p  
}  Rb\=\  
} B2WPjhzD  
d q"b_pr;  
} p0`Wci  
burEo.=  
} c@5fiRPv!  
&FkKnz4IZ  
SortUtil: Q3wD6!'&m  
?ti7iBz?  
package org.rut.util.algorithm; ZCbxL.fFz  
0 6 K8|K  
import org.rut.util.algorithm.support.BubbleSort; %jKR\f G  
import org.rut.util.algorithm.support.HeapSort; Y?ZTl762  
import org.rut.util.algorithm.support.ImprovedMergeSort; V|#B=W  
import org.rut.util.algorithm.support.ImprovedQuickSort; T1\Xz-1  
import org.rut.util.algorithm.support.InsertSort; L>xcgV7  
import org.rut.util.algorithm.support.MergeSort; w v9s{I{P  
import org.rut.util.algorithm.support.QuickSort; =h5&\4r=  
import org.rut.util.algorithm.support.SelectionSort; m\"M`o B  
import org.rut.util.algorithm.support.ShellSort; W4|1wd}.t  
qSkt }F%'  
/** s2b!Nib  
* @author treeroot Xb#x^?|  
* @since 2006-2-2 %zb7M%dC6`  
* @version 1.0 "&Q-'L!M'/  
*/ 3vQ?vS|2  
public class SortUtil {  ItC*[  
public final static int INSERT = 1; iWGgt]RJ  
public final static int BUBBLE = 2; htMsS4^Kvd  
public final static int SELECTION = 3; <kPU*P,  
public final static int SHELL = 4; ,Xo9gn  
public final static int QUICK = 5; tojJQ6;J  
public final static int IMPROVED_QUICK = 6; J);1Tpm  
public final static int MERGE = 7; 3`SLMPI  
public final static int IMPROVED_MERGE = 8; ehO F@IA_  
public final static int HEAP = 9; T/)$}#w0i  
AG/nX?u7)t  
public static void sort(int[] data) { *)L%pH>`  
sort(data, IMPROVED_QUICK); 8kH'ai  
} 84e)huAs  
private static String[] name={ aNv6 "  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1S  0GjR  
}; ZKAIG=l&!  
X7NRQ3P@  
private static Sort[] impl=new Sort[]{ P ,xayy  
new InsertSort(), h9>~?1$lz  
new BubbleSort(), Vy-H3BR  
new SelectionSort(), XH1so1h  
new ShellSort(), W%Br%VQJ  
new QuickSort(), p9oru0q  
new ImprovedQuickSort(), F3,hx  
new MergeSort(), rM=Q.By+\  
new ImprovedMergeSort(), v|t^th,  
new HeapSort() |Wi$@sWO  
};  6.KR(V  
_S2QY7/  
public static String toString(int algorithm){ .;/@k%>   
return name[algorithm-1]; )nQpO"+M  
} :g+R}TR[i  
I&Yu=v/_  
public static void sort(int[] data, int algorithm) {  6>Lr  
impl[algorithm-1].sort(data); /bfsC& 3  
} -[0)n{AVvU  
Ax=Rb B"  
public static interface Sort { amlE5GK;  
public void sort(int[] data); Ks8S^77  
} tA}O'x  
$ LFzpg  
public static void swap(int[] data, int i, int j) { NnrX64|0  
int temp = data; 19 bP0y  
data = data[j]; Kn=P~,FaG3  
data[j] = temp; oxHS7b  
} c5R58#XK=  
} %CD}A%~  
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