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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。 OaNc9c"  
插入排序: A?' H[2]w"  
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package org.rut.util.algorithm.support; jQs*(=ls  
1W0.Ufl)  
import org.rut.util.algorithm.SortUtil; sSy$(%  
/** >\&= [C  
* @author treeroot NkoofhZ  
* @since 2006-2-2 Z !Z,M' "  
* @version 1.0 F`3^wHw^  
*/ +i4P,Lp  
public class InsertSort implements SortUtil.Sort{ lT3|D?sF  
5Abz 5-^KH  
/* (non-Javadoc) bkkSIl+Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *bU% @O  
*/ p4y6R4kyT  
public void sort(int[] data) { ]p\u$VY9  
int temp; 15JsmA*Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZGzc"r(r:#  
} Vp\80D&  
} oL)lyUVT  
} =kF? _KN  
1oB$u!6P  
} LVoyA/ F  
+`9yZOaC#  
冒泡排序: >mew"0Q  
q$|0)}  
package org.rut.util.algorithm.support; L1rA T  
7\f{'KL  
import org.rut.util.algorithm.SortUtil; gINwvzW{  
"B~WcC  
/** |FjBKj  
* @author treeroot sl%#u9r=  
* @since 2006-2-2 oFb\T iLu  
* @version 1.0 &b!vWX1N  
*/ *^ey]),f54  
public class BubbleSort implements SortUtil.Sort{ gUu&Vy\  
=#b4c>  
/* (non-Javadoc) dA|Lufy#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !2#\| NJk  
*/ Q|Nzbmwh  
public void sort(int[] data) { 4p?+LdL  
int temp; 8V,"Id][  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7t`E@dm  
if(data[j] SortUtil.swap(data,j,j-1); :|zp8|  
} ~K_]N/ >  
} ,RR;VKj  
} Oe/73| >U  
} [6G=yp  
{uEu >D$8  
} Lblet  
J-b~4  
选择排序: h)7v1,;w'  
$1b]xQ  
package org.rut.util.algorithm.support; }+*w.X}L  
3_C98ClE  
import org.rut.util.algorithm.SortUtil; /i> ?i@O-  
3Hy%SN(  
/** vNPfUEnA  
* @author treeroot 4+-5,t7  
* @since 2006-2-2 v*smI7aH  
* @version 1.0 "IOC[#&G  
*/ )nJzSN=>$  
public class SelectionSort implements SortUtil.Sort { 1bT' u5&  
]"C| qR*  
/* gHp'3SnS  
* (non-Javadoc) H U:1f)a a  
* CQj/e+eE4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x`Vy<h 33  
*/ hcd!A 5  
public void sort(int[] data) { <zfO1~^  
int temp; =VCi8jDkP  
for (int i = 0; i < data.length; i++) { 7E;>E9 '  
int lowIndex = i; Dp%5$wF)8  
for (int j = data.length - 1; j > i; j--) { mgk64}K[n  
if (data[j] < data[lowIndex]) { +[>y O _}  
lowIndex = j; #8S [z5 `  
} A1mYkG)l  
} f&=K]:WDe  
SortUtil.swap(data,i,lowIndex); u![4=w  
} FP.(E9  
} ])+Sc"g4k  
H<v c\r  
} @=02  
yBr$ 0$  
Shell排序: /;zZnF\ e  
{N`<e>A]{  
package org.rut.util.algorithm.support; t|,Ex7  
e;Z`&  
import org.rut.util.algorithm.SortUtil; + opN\`  
{;~iq  
/** '%7]xp  
* @author treeroot _ q1|\E%`h  
* @since 2006-2-2 \d`Sz *  
* @version 1.0 =1?yS3  
*/ u 9Tl Xn  
public class ShellSort implements SortUtil.Sort{ - C]a2  
~#Mx&mZ  
/* (non-Javadoc) sm S0Rk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :cz]8~i\  
*/ )}lV41u  
public void sort(int[] data) { SuuS!U+i>  
for(int i=data.length/2;i>2;i/=2){ RlL,eU$CS  
for(int j=0;j insertSort(data,j,i); .DsYR/  
} +`[Sv%v&L  
} sM_e_e  
insertSort(data,0,1); U Bg_b?k  
} Um|Tf]q  
|a\TUzq  
/** _YUF /B'  
* @param data (LPc\\Vv  
* @param j B)NB6dCp  
* @param i S?tLIi/  
*/ Ku'U^=bVm:  
private void insertSort(int[] data, int start, int inc) { SHh(ujz,  
int temp; %05a>Rf&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _L.yt5_  
} ZJm^znpw6  
} 2J;CiEB  
} Xqw7lj;K  
S!cXc/H-R  
} 1i2O]e!  
p$ <qT^]&  
快速排序: a06q-3zw  
}A ^,y  
package org.rut.util.algorithm.support; hglt D8,  
1i2w<VG1  
import org.rut.util.algorithm.SortUtil; h!]A(T\J  
u{z{3fW_  
/** 'kK%sE   
* @author treeroot 9mm(?O~'p  
* @since 2006-2-2 /ep~/#Ia  
* @version 1.0 ?8/h3xV;  
*/ ]vErF=[U,  
public class QuickSort implements SortUtil.Sort{ ';F][x5j  
b>WT-.b0  
/* (non-Javadoc) )P])0Y-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I-"{m/PEdg  
*/ n5/Q)*e0'#  
public void sort(int[] data) { Y6a|\K|  
quickSort(data,0,data.length-1); J_$~OEC~  
} S#dS5OX  
private void quickSort(int[] data,int i,int j){ }IL@j A  
int pivotIndex=(i+j)/2; t T:yvU@a  
file://swap 7L"/4w  
SortUtil.swap(data,pivotIndex,j); jyr#e  
sxtGl^,mU:  
int k=partition(data,i-1,j,data[j]); 3\7$)p+c  
SortUtil.swap(data,k,j); qiN'Tuw9  
if((k-i)>1) quickSort(data,i,k-1); hrF4 a$  
if((j-k)>1) quickSort(data,k+1,j); t"fD"Xpj  
>d\I*"C+d  
} kvn6 NiU  
/** ks$G6WC  
* @param data P $S P4F  
* @param i \9^@,kfP  
* @param j "N_?yA#(j  
* @return " cg>g/  
*/ f_8~b0`  
private int partition(int[] data, int l, int r,int pivot) { jEIL(0_H  
do{ 8b!_b2Za  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WTx;,TNG  
SortUtil.swap(data,l,r); @dNbL}qQ  
} <5%We(3  
while(l SortUtil.swap(data,l,r); Q{60^vg  
return l; 7j8_O@_  
} `RRORzXoS  
+l(}5(wc  
} ><~hOK?v  
I5]zOKlVR  
改进后的快速排序: yk/XfwQ5  
\\JXY*DA:+  
package org.rut.util.algorithm.support; +L6d$+  
"?SnA +)  
import org.rut.util.algorithm.SortUtil; v},sWjv  
WW=7QC i  
/** @$]h[   
* @author treeroot S8l+WF4q  
* @since 2006-2-2 f`e.c_n(  
* @version 1.0 >Mn.|:DF]&  
*/ HFOp4  
public class ImprovedQuickSort implements SortUtil.Sort { p(Mv^ea  
;f Gi5=-  
private static int MAX_STACK_SIZE=4096; 3Daq5(fLP  
private static int THRESHOLD=10; xmDwoLU  
/* (non-Javadoc) :|Cf$2k7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9tO_hhEQ@  
*/ f&'md  
public void sort(int[] data) { -5K/ cK  
int[] stack=new int[MAX_STACK_SIZE]; , utFCZW  
4p.O<f;A8  
int top=-1; G)Y!aX  
int pivot; _[W=1bGJ  
int pivotIndex,l,r; U' Cp3>  
DNPK1e3a{  
stack[++top]=0; x& S>Mr  
stack[++top]=data.length-1; {$^|^n5j  
_17"T0  
while(top>0){ x/~M=][tN  
int j=stack[top--]; 3-'|hb  
int i=stack[top--]; ~gN'";1i  
H@zpw1fH+  
pivotIndex=(i+j)/2; U!4 ^;  
pivot=data[pivotIndex]; 0U'r ia:$  
W2RS G~|  
SortUtil.swap(data,pivotIndex,j); kVY@q&p  
UWHC]V?  
file://partition Hg4Ut/0  
l=i-1; CJ_B.  
r=j; Z5Cv$bUc  
do{ 4/b#$o<I?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  f$3  
SortUtil.swap(data,l,r); y4') !e  
} myXV~6R 3  
while(l SortUtil.swap(data,l,r); e(Ve rd:c  
SortUtil.swap(data,l,j); F3q5!1  
LPC7Bdjz  
if((l-i)>THRESHOLD){ #p]O n87>  
stack[++top]=i; (_* a4xGF  
stack[++top]=l-1; ag6S"IXh  
} 'py k  
if((j-l)>THRESHOLD){ #!2gxm;g  
stack[++top]=l+1; pmC@ fB  
stack[++top]=j; vd~O:=)4  
} WKG=d]5  
-}%zus5  
} E] [DVY  
file://new InsertSort().sort(data); bpkn[K"(  
insertSort(data); ^P[*yf  
} UxW~yk  
/** 7 ?Fl [FW$  
* @param data QO8/?^d  
*/  [7bY(  
private void insertSort(int[] data) { +=R:n^r^,  
int temp; ?NL2|8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~'ovJ46tx  
} XP'KgTF  
} Xe5J  
} HN:{rAIfc  
z"<PveVo  
} |^ qW   
8]O|$8'"  
归并排序: 1g;3MSn~  
n}l Z  
package org.rut.util.algorithm.support; HBt?cA '  
t/3veDh@  
import org.rut.util.algorithm.SortUtil; "783F:mPh  
Y !`H_Qo  
/** ;j$84o{  
* @author treeroot  *q^'%'  
* @since 2006-2-2 ,"D1!0  
* @version 1.0 G 5)?!  
*/ R{T4AZ@,'  
public class MergeSort implements SortUtil.Sort{ 6c2fqAF>i  
.m<-)Kx  
/* (non-Javadoc) BjA|H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g$A1*<+  
*/ W?@ ;(k  
public void sort(int[] data) { RKe19l_V  
int[] temp=new int[data.length]; E(TY%wO  
mergeSort(data,temp,0,data.length-1); U}UIbJD*=  
} ?f%@8%px  
|PWLFiT(>  
private void mergeSort(int[] data,int[] temp,int l,int r){ Qwb@3{  
int mid=(l+r)/2; sx22|j`)V  
if(l==r) return ; 6)W9/V-W  
mergeSort(data,temp,l,mid); toF@@ %  
mergeSort(data,temp,mid+1,r); pRC#DHcHh  
for(int i=l;i<=r;i++){ L9x,G!  
temp=data; Iv{}U\ u  
} t<e?f{Q5  
int i1=l; s#4 "f  
int i2=mid+1; l!oU9  
for(int cur=l;cur<=r;cur++){ u", [ulP  
if(i1==mid+1) pPIH`Iq  
data[cur]=temp[i2++]; Va1|XQ<CL  
else if(i2>r) 9Vp$A$7M  
data[cur]=temp[i1++]; }>grGr%oR  
else if(temp[i1] data[cur]=temp[i1++]; U8moVj8w1  
else `aCcTs7~]p  
data[cur]=temp[i2++]; zP5HTEz  
} rIu>JyC"p  
} o}[wu:>yk  
1f}Dza9  
} 77)C`]0(  
$hA[vi\5  
改进后的归并排序: .9`.\v6R  
h322^24-2  
package org.rut.util.algorithm.support; il:+O08_  
_3)~{dQ+  
import org.rut.util.algorithm.SortUtil; g >X!Q  
F.JE$)B2EX  
/** nF7Ozxm#  
* @author treeroot >:Rc%ILym  
* @since 2006-2-2 tf>?;  
* @version 1.0 C3 D1rS/I  
*/ &ed.%:  
public class ImprovedMergeSort implements SortUtil.Sort { P*\.dAi  
]E,  
private static final int THRESHOLD = 10; =s;7T!7!  
: G<1   
/* OYe @P  
* (non-Javadoc) uHy^ Bq  
* !W8$-iq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dD#A.C,Rz  
*/ 3Y>!e#  
public void sort(int[] data) { lx%<oC+M  
int[] temp=new int[data.length]; qg+ 8i9Y!  
mergeSort(data,temp,0,data.length-1); qF>}"m  
} *r[PZ{D+  
;X\,-pjv  
private void mergeSort(int[] data, int[] temp, int l, int r) { (d@lG*K  
int i, j, k; s$mcIMqs  
int mid = (l + r) / 2; ujHqw Rh  
if (l == r) `2 {x 8A  
return; tM~R?9OaJ  
if ((mid - l) >= THRESHOLD) K4y4!zz  
mergeSort(data, temp, l, mid); `^RpT]S  
else {gzL}KL  
insertSort(data, l, mid - l + 1); EWbFy"=  
if ((r - mid) > THRESHOLD) B1 'Ds  
mergeSort(data, temp, mid + 1, r); &g|-3)A  
else 3. Kh  
insertSort(data, mid + 1, r - mid); ,LG6py&aT  
!MoGdI-<r[  
for (i = l; i <= mid; i++) { CmM K\R.  
temp = data; _8kZ>w(L  
} -fYgTst2  
for (j = 1; j <= r - mid; j++) { I9H+$Wjd  
temp[r - j + 1] = data[j + mid]; =! /S |  
} Ow<=K:^  
int a = temp[l]; h%pgdix  
int b = temp[r]; $:SHZe  
for (i = l, j = r, k = l; k <= r; k++) { k/cQJz  
if (a < b) { ?PLf+S  
data[k] = temp[i++]; Hcuvu[)T"  
a = temp; )V} t(>V  
} else { ;ZB[g78%R%  
data[k] = temp[j--]; UZv^3_,qz  
b = temp[j]; IrJCZsk  
} e5C560  
} }>>BKn   
} V{ECDg P  
1%t9ic  
/** d XrLeoK  
* @param data "\Z.YZUa\  
* @param l +wr2TT~  
* @param i ;i>|5tEy  
*/ *JUP~/Nr  
private void insertSort(int[] data, int start, int len) { Ac|IBXGa=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?(4 =:o  
} yY[N\*P  
} cd#@"&r  
} `q".P]wtKN  
} g7rn|<6FI  
hr(E, TAe  
堆排序: {|bf`  
;5?$q  
package org.rut.util.algorithm.support; hxGZ}zq*S  
~+7q.XL$$K  
import org.rut.util.algorithm.SortUtil; .9PPWY;H  
RdRF~~R%  
/** ^,qi` Tk  
* @author treeroot 7NE"+EP\{2  
* @since 2006-2-2 Rra<MOR  
* @version 1.0 FY@ErA7~  
*/ UW_fn  
public class HeapSort implements SortUtil.Sort{ =E,^ +`M  
>S,yqKp37~  
/* (non-Javadoc) GMyzQ]@}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n3 -5`Jti  
*/ p<: bP w  
public void sort(int[] data) { :'|%~&J  
MaxHeap h=new MaxHeap(); F$F,I,$ "  
h.init(data); ?I6!m~  
for(int i=0;i h.remove(); \ym3YwP4/:  
System.arraycopy(h.queue,1,data,0,data.length); &;DK^ta*P  
} jTH,GF  
 v=R=K  
private static class MaxHeap{ V)mitRaV  
pqmtN*zV  
void init(int[] data){ |VQ17*4ff1  
this.queue=new int[data.length+1]; xy5&}_Y  
for(int i=0;i queue[++size]=data; DY/xBwIF  
fixUp(size); +`>Tuz~  
} \]1qAFB5  
} ZF!cXo7d  
w9Bbvr6  
private int size=0; SvLI%>B=9  
7j| ^ZuI+  
private int[] queue; * G!C 'w\$  
XvETys@d  
public int get() { SfLZVB  
return queue[1]; xp7 `[.  
} c@>Tzk%?"  
FL*qV"r^n  
public void remove() { XEl-5-M"  
SortUtil.swap(queue,1,size--); )O*\}6:S  
fixDown(1); 3|x*lmit  
} :[YHJaK  
file://fixdown *")Req  
private void fixDown(int k) { [|.IXdJ!  
int j; =bgzl=A`  
while ((j = k << 1) <= size) { 0A9llE  
if (j < size %26amp;%26amp; queue[j] j++; K[r<-6TS  
if (queue[k]>queue[j]) file://不用交换 %38HGjS  
break; 1fUg  
SortUtil.swap(queue,j,k); ova4  
k = j; cNOtfn6?F  
} ^h\& l{e  
} WR,MqM20  
private void fixUp(int k) { Is57)(^.-  
while (k > 1) { W<| M0S{  
int j = k >> 1; !Lkk1z o  
if (queue[j]>queue[k]) m[n=t5~  
break; g9C/Oj`I  
SortUtil.swap(queue,j,k); wX<w)@  
k = j; XT+V> H I  
} 89hV{^  
} i7D[5!  
Vi1l^ Za  
} ?i'N 9 /(  
F#NuZ'U  
} 4:wVT;?a  
v_^>*Vm*  
SortUtil: U1nObA  
%x{jmZ$}  
package org.rut.util.algorithm; 7W[+e&  
)<YfLDgTs  
import org.rut.util.algorithm.support.BubbleSort; 6.5E d-  
import org.rut.util.algorithm.support.HeapSort; v *icoj  
import org.rut.util.algorithm.support.ImprovedMergeSort; O?,Grn%'.  
import org.rut.util.algorithm.support.ImprovedQuickSort; Pa)'xfQ$Y6  
import org.rut.util.algorithm.support.InsertSort; M18 >%zM  
import org.rut.util.algorithm.support.MergeSort; 5?l8;xe`{f  
import org.rut.util.algorithm.support.QuickSort; x Zp`  
import org.rut.util.algorithm.support.SelectionSort; gi {rqM  
import org.rut.util.algorithm.support.ShellSort; k4T`{s}e  
KEfN!6  
/** Uzh#z eZ`<  
* @author treeroot cPunMHD  
* @since 2006-2-2 qh9d .Q+n  
* @version 1.0 O1+OE!w  
*/ QrBb! .r  
public class SortUtil { L;RHs hTy  
public final static int INSERT = 1; gpT~3c;l=  
public final static int BUBBLE = 2; Z=R 6?jU*n  
public final static int SELECTION = 3; -A]-o  
public final static int SHELL = 4; '`+8'3K~E  
public final static int QUICK = 5; JsP<etX  
public final static int IMPROVED_QUICK = 6; ~aBf.  
public final static int MERGE = 7; (>49SOu;$\  
public final static int IMPROVED_MERGE = 8; ~}"5KX\=#  
public final static int HEAP = 9; C*X=nezq  
ibP IT!5c  
public static void sort(int[] data) { 3ch<a0  
sort(data, IMPROVED_QUICK); +-X 6 8`  
} ,{6 Vf|?  
private static String[] name={ )x5t']w`K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4yK{(!&i+  
}; '8w}m8{y  
{<cL@W  
private static Sort[] impl=new Sort[]{ B)/L[ )S  
new InsertSort(), E4N/or  
new BubbleSort(), DbWaF5\yD  
new SelectionSort(), 1VKu3  
new ShellSort(), $ U=j<^R}a  
new QuickSort(), l"zwH  
new ImprovedQuickSort(), D?.H|%  
new MergeSort(), Y~TD)c=  
new ImprovedMergeSort(), '2z1$zst,#  
new HeapSort() ^V}c8 P|  
}; @ / .w%  
Y;)l  
public static String toString(int algorithm){ P+L#p(K  
return name[algorithm-1]; :X*$U ~aQ  
} +lplQh@RB  
&M>o  
public static void sort(int[] data, int algorithm) { vc%=V^)N7U  
impl[algorithm-1].sort(data); [CG3&J  
} b^:frjaE3  
^]5^p9Jt"e  
public static interface Sort { k3+LP7|*  
public void sort(int[] data); 1,7  
} 3ncN) E/@  
;e)`C v  
public static void swap(int[] data, int i, int j) { ;RK;kdZ  
int temp = data; &j}:8Tst  
data = data[j]; BaVooN~C  
data[j] = temp; =28ZSo^  
} 9^+E$V1@  
} K+\2cf?bU  
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