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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。 \h DH81L  
插入排序: ).0h4oHSj  
$:R"IqDG  
package org.rut.util.algorithm.support; hVe@:1og#  
er Cl@sq  
import org.rut.util.algorithm.SortUtil;  xA DjQ%B  
/** o:<g Jzg  
* @author treeroot smLXNO  
* @since 2006-2-2 $\xS~ w  
* @version 1.0 `Trpv$   
*/ 51Yq>'8  
public class InsertSort implements SortUtil.Sort{ ]g jhrD   
ssv4#8p3  
/* (non-Javadoc) |0vV?f$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y4Hi<JWo  
*/ rULrGoM  
public void sort(int[] data) { I^pD=1Y]  
int temp; N'nI ^=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); je6H}eWTC6  
} Sq,ZzMw  
} __\Tv>Y  
} **L. !/  
+@wa?"  
} /xmUu0H$R  
PSX-b)wb  
冒泡排序: +~Ni7Dp]  
n22k<@y  
package org.rut.util.algorithm.support; "wi=aV9j  
}R#YO$J7  
import org.rut.util.algorithm.SortUtil; R=jIVw'  
4-@D`,3L  
/** KUG\C\z6=  
* @author treeroot u|l]8T9L  
* @since 2006-2-2 `a}!t=~#w  
* @version 1.0 Ur`Ri?  
*/ +@),Fk_  
public class BubbleSort implements SortUtil.Sort{ ^&iUC&8W  
$gm`}3C<  
/* (non-Javadoc) &DC o;Ij;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lYkm1  
*/ h$)},% e  
public void sort(int[] data) { 1df }gG  
int temp; {64od0:T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Xk[;MZ[  
if(data[j] SortUtil.swap(data,j,j-1); ~W'>L++  
} Mq!03q6  
} *6%!i7kr  
} x{IxS?.j+  
} )En*5-1  
:hYV\8 $  
} vy?Zz<c;  
^<fN  
选择排序: .Ua|KKK C  
s u]x  
package org.rut.util.algorithm.support; 5\Sm^t|Tx  
"*O(3L.c-  
import org.rut.util.algorithm.SortUtil; 0q`n]NM  
OM,-:H,  
/** T/Q#V)Tp  
* @author treeroot D_fgxl  
* @since 2006-2-2 ^mbpt`@  
* @version 1.0 rJ)O(  
*/  qOO2@c  
public class SelectionSort implements SortUtil.Sort { :e1BQj`R  
4 %do.D*  
/* GmoY~}cg~  
* (non-Javadoc) |V#h "s  
* 8w &A89  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "I.PV$Rxl  
*/ HhkubG)\  
public void sort(int[] data) { 3#7D g't  
int temp; S EdNH.|I  
for (int i = 0; i < data.length; i++) { 5nL,sFd  
int lowIndex = i; QF 2Eg  
for (int j = data.length - 1; j > i; j--) { \Q[u?/TF  
if (data[j] < data[lowIndex]) { )r _zM~jI  
lowIndex = j; }{<@wE%s  
} Dg]( ?^  
} T^9k,J(rM  
SortUtil.swap(data,i,lowIndex); pq0F!XmU  
} ptXCM[Z+  
} -' 7I|r  
Z3Le?cMt^  
} KrNu7/H  
 ?Y4$  
Shell排序: F.:B_t  
)LESdX  
package org.rut.util.algorithm.support; lc%2fVG-e  
x5/O.5>f  
import org.rut.util.algorithm.SortUtil; C^>txui8  
-:w+`x?XaB  
/** ~4YU  
* @author treeroot Zi$v-b*<  
* @since 2006-2-2 S i[:l  
* @version 1.0 H4#|f n  
*/ ]=T`8)_r)  
public class ShellSort implements SortUtil.Sort{ + D ,Nd=/  
FOz7W  
/* (non-Javadoc) =<nx [J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Fx$x#Gc@y  
*/ nZ>8r  
public void sort(int[] data) { 4N&4TUIM  
for(int i=data.length/2;i>2;i/=2){ ]oy>kRnb {  
for(int j=0;j insertSort(data,j,i); 8 /3`rEW  
} tE"aNA#=  
} gWcl@|I;\  
insertSort(data,0,1); saMv.;s 1^  
} ,1-n=eTQ  
1t"  
/** vMBF7Jfx  
* @param data ,'~8{,h5  
* @param j D@5Ud)_  
* @param i iQryX(z  
*/  iC]=S}  
private void insertSort(int[] data, int start, int inc) { >^vyp!  
int temp; 6|q\ M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N5$IVz}  
} DQ'yFPE  
} m:EO}ws=  
} 5&}~W)"9  
6$#p}nE  
} di^E8egR$  
FbxrBM  
快速排序: ,9T-\)sT  
G$b*N4yR  
package org.rut.util.algorithm.support; k+8K[ ?K-  
tYE\tbCO'  
import org.rut.util.algorithm.SortUtil; pwq a/Yi  
!RX7TYf  
/** Uy8r !9O  
* @author treeroot +6cOL48"  
* @since 2006-2-2 6I,^4U  
* @version 1.0 kNW}0CDgs  
*/ MfzSoxCb  
public class QuickSort implements SortUtil.Sort{ 1A>>#M=A  
"P4#Q_  
/* (non-Javadoc) :Iy4 B+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U-uBz4Gha  
*/ =u M2l  
public void sort(int[] data) { J!l/!Z>!cF  
quickSort(data,0,data.length-1); x. d ;7  
} pDW4DF:`(  
private void quickSort(int[] data,int i,int j){ >]DnEF&  
int pivotIndex=(i+j)/2; d9'gH#f?  
file://swap |7 .WP;1  
SortUtil.swap(data,pivotIndex,j); ) `u)#@x  
_0Mt*]L }  
int k=partition(data,i-1,j,data[j]); .W>LsEk  
SortUtil.swap(data,k,j); aTJs.y -I~  
if((k-i)>1) quickSort(data,i,k-1); s,KE,$5F   
if((j-k)>1) quickSort(data,k+1,j); K,pQ11J  
$@H]0<3,  
} e!+_U C  
/** |2oCEb1  
* @param data F(?A7  
* @param i }Xn5M&>?  
* @param j Ebmd[A&&  
* @return ~,199K#'  
*/ f$\gm+&hXE  
private int partition(int[] data, int l, int r,int pivot) { #x) lN  
do{ h]|E,!H  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bf9LR1  
SortUtil.swap(data,l,r); c:%ll&Xtn  
} Q/JX8<7K  
while(l SortUtil.swap(data,l,r); #!a}ZhIt  
return l; *3,Kn}ik  
} 0vu$dxb[  
:E$<!q  
} FZUN*5`  
]z^*1^u^ig  
改进后的快速排序: @' V=Vr  
@zz4,,]  
package org.rut.util.algorithm.support; Wmm'j&hI  
y":Y$v,P  
import org.rut.util.algorithm.SortUtil; 7'pmW,;  
=TTk5(m  
/** nPAVrDg O  
* @author treeroot sBsf{%I[{  
* @since 2006-2-2 y;M}I8W[  
* @version 1.0 ^xBF$ua37)  
*/ )#NT*@j`  
public class ImprovedQuickSort implements SortUtil.Sort { HAkEJgV  
=\t%U5  
private static int MAX_STACK_SIZE=4096; @W{VT7w  
private static int THRESHOLD=10; n!nXM  
/* (non-Javadoc) _8-iO.T+2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Wr"c  
*/ eM3-S=R?<g  
public void sort(int[] data) { r)9&'m.:  
int[] stack=new int[MAX_STACK_SIZE]; (wMiX i  
^oL43#Nlo  
int top=-1; N2 vA/  
int pivot; 7W{xK'|]  
int pivotIndex,l,r; %[l*:05  
2l7Sbs7  
stack[++top]=0; #_A <C+[  
stack[++top]=data.length-1; 1XwW4cZ>:  
E[z8;A^:0  
while(top>0){ 5tSR2gG#K,  
int j=stack[top--]; yB>5p]$P  
int i=stack[top--]; -G!W6$Y  
` |L l  
pivotIndex=(i+j)/2; } Fw/WD  
pivot=data[pivotIndex];  1#G(  
eHjna\C  
SortUtil.swap(data,pivotIndex,j); BW`)q/  
[f_4%Now  
file://partition h1 y6`m9  
l=i-1; #[4MwM3  
r=j; gwf *M3(  
do{ o(2tRDT\_b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); r_5k$u(  
SortUtil.swap(data,l,r); v(ATbY75  
} +[=yLE#P%  
while(l SortUtil.swap(data,l,r); #Cwzk{p(  
SortUtil.swap(data,l,j); x[ sSM:  
"Yk3K^`1T.  
if((l-i)>THRESHOLD){ RpAtd^I  
stack[++top]=i; 8-A * Jc  
stack[++top]=l-1; }G:5P3f  
} f;Iaf#V_  
if((j-l)>THRESHOLD){ bIX'|=  
stack[++top]=l+1; 6X@]<R  
stack[++top]=j; f/FK>oUh  
} E^RPK{zO  
SO}$96  
} b),_rr  
file://new InsertSort().sort(data); a^9-9*  
insertSort(data); Oy @vh>RY  
} :+Pl~X"_  
/** D92#&,KD  
* @param data 7_AR()CM  
*/ Kg#5 @;  
private void insertSort(int[] data) { 5y}kI  
int temp; d/Sx+1 "{T  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "S">#.L  
} wbC'SOM  
} qU'O4TWZ  
} Dn[iA~  
]Z@+ |&@L  
} B{D!5{t  
IT`r&;5  
归并排序: UUxDW3K  
*mqoyOa  
package org.rut.util.algorithm.support; (z[|\6O  
y=L9E?  
import org.rut.util.algorithm.SortUtil; QE:%uT  
ty8\@l  
/** AT#&`Ew  
* @author treeroot K%Sy~6iD&  
* @since 2006-2-2 EW* 's(  
* @version 1.0 u 1?1x  
*/ zU+` o?al  
public class MergeSort implements SortUtil.Sort{ UuV<#N)  
Y)x(+#  
/* (non-Javadoc) ,j4 ;:F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YpFh_Zr[  
*/ SX$Nef9p  
public void sort(int[] data) { 1|za>N6[yu  
int[] temp=new int[data.length]; it2@hZc5  
mergeSort(data,temp,0,data.length-1); 0]dL;~0y.  
} JRMe( ,u  
(6C%w)8'  
private void mergeSort(int[] data,int[] temp,int l,int r){ UB3b  
int mid=(l+r)/2; }gE?ms4$  
if(l==r) return ; {+V1>6  
mergeSort(data,temp,l,mid); N'L3Oa\%  
mergeSort(data,temp,mid+1,r); *mQOW]x%  
for(int i=l;i<=r;i++){ Wcy N, 5  
temp=data; _)q,:g~fu  
} OUY 65K  
int i1=l; PvzB, 2":  
int i2=mid+1; 8ODrW!o  
for(int cur=l;cur<=r;cur++){ MQR@(>TZy  
if(i1==mid+1) SwESDo)  
data[cur]=temp[i2++]; kaxAIk8l  
else if(i2>r) pN+lC[C  
data[cur]=temp[i1++]; iJg3`1@j  
else if(temp[i1] data[cur]=temp[i1++]; z6tH2Wxf  
else ' LT6%<|  
data[cur]=temp[i2++]; s=lkK / [  
} *KP 60T  
} RlU=  
ni#!Gxw  
} :@6,|2b e=  
~eH+*U|\|M  
改进后的归并排序: ;!(.hCHvr  
&lYZ=|6  
package org.rut.util.algorithm.support; ?XVJ$nzW  
56Q9RU(M  
import org.rut.util.algorithm.SortUtil; /? n 9c;w  
Ak!l}d  
/** gt3;Xi  
* @author treeroot djVE x }  
* @since 2006-2-2 fu/v1Nhm  
* @version 1.0 pU`4bT(w%  
*/ K (yuL[p`  
public class ImprovedMergeSort implements SortUtil.Sort { %2=nS<kC  
GI}h )T  
private static final int THRESHOLD = 10; DCfV  
PgZ~of&  
/* fL7ym,?  
* (non-Javadoc) ^Bihm] Aq  
* >= Hcw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %=J<WA6\  
*/ wVD-}n1"  
public void sort(int[] data) { Qc2_B\K^  
int[] temp=new int[data.length]; `, ?T;JRc  
mergeSort(data,temp,0,data.length-1); C[:Q?LE  
} 7kM_Ijd$  
FJ3Xeo s4|  
private void mergeSort(int[] data, int[] temp, int l, int r) { pmAir:  
int i, j, k; : 0Nd4hA  
int mid = (l + r) / 2; -b-Pvw4  
if (l == r) v2 [ l$  
return; STp}?Cb  
if ((mid - l) >= THRESHOLD) 7SE=otZ>  
mergeSort(data, temp, l, mid); Y418k  
else w/s{{X<bF  
insertSort(data, l, mid - l + 1); j r6)K;:.  
if ((r - mid) > THRESHOLD) |MvCEp  
mergeSort(data, temp, mid + 1, r); 5EDM?G  
else WF<0QH  
insertSort(data, mid + 1, r - mid); { hUbK+dKZ  
krm&.J  
for (i = l; i <= mid; i++) { -\yaP8V  
temp = data; .H+`]qLkL  
} P-ma~g>I  
for (j = 1; j <= r - mid; j++) { @AL,@P/9=  
temp[r - j + 1] = data[j + mid]; }9e4?7  
} 0q"&AxNsP  
int a = temp[l]; ?lCKZm.,(-  
int b = temp[r]; !8ub3oj)  
for (i = l, j = r, k = l; k <= r; k++) { mfLS< /A  
if (a < b) { ,dKcxp~[  
data[k] = temp[i++]; :h1itn  
a = temp; CDei+ q  
} else { >:5/V0;,  
data[k] = temp[j--]; ciI;U/V  
b = temp[j]; vBQ|h  
} xtN%v0ZZ  
} 4`)B@<  
} 5#+!|S[PK  
swuW6p  
/** R@t?!`f!+  
* @param data F?e_$\M  
* @param l dkJ+*L5  
* @param i  {[o=df/  
*/ Z6SM7? d  
private void insertSort(int[] data, int start, int len) { %v:9_nwO)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -uenCWF\#  
} @v_ )(  
} hT9fqH  
} L~SM#?z:ue  
} TIlcdpwXf  
>f4H<V-  
堆排序: e?3 S0}  
"CBe$b4  
package org.rut.util.algorithm.support; ~c,HE] B  
_!H{\kU  
import org.rut.util.algorithm.SortUtil; "'-f?kZ  
5E?{>1  
/** 2Q,e1' =  
* @author treeroot qYZX, x  
* @since 2006-2-2 ?8fa/e  
* @version 1.0 Xa\{WM==;  
*/ ]wWN~G)2lV  
public class HeapSort implements SortUtil.Sort{ "zJ1vIZY  
wqJ^tA!  
/* (non-Javadoc) G+[hE|L~y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D`,W1Z#  
*/ xq- R5(k  
public void sort(int[] data) { i5w  
MaxHeap h=new MaxHeap(); a,x-akZWf  
h.init(data); TB\#frG  
for(int i=0;i h.remove(); -("sp  
System.arraycopy(h.queue,1,data,0,data.length); IQf:aX  
} 2G<\Wz  
1|l'oTAA  
private static class MaxHeap{ u;H SX  
8- 3]Bm!  
void init(int[] data){ F\F_">5  
this.queue=new int[data.length+1]; }p$>V,u  
for(int i=0;i queue[++size]=data; "C&l7K;bp  
fixUp(size); QI'ule  
} d}j%. JJK  
} sxinA8  
O@6iG  
private int size=0; C;];4[XR  
W0J d2*]  
private int[] queue; {D J!T  
"bZ%1)+  
public int get() { X*hY?'Rp  
return queue[1]; |N/Grk4  
} | s%--W  
C?m2R(RF  
public void remove() { uMKO^D  
SortUtil.swap(queue,1,size--); jI %v[]V  
fixDown(1); "7}bU_":s  
} o|O730"2F  
file://fixdown #{KYsDtvx  
private void fixDown(int k) { ,r^zDlS<q  
int j; W6J%x[>Z  
while ((j = k << 1) <= size) { 1=:=zyEEo  
if (j < size %26amp;%26amp; queue[j] j++; $X<O\Kna  
if (queue[k]>queue[j]) file://不用交换 Ro3C(aRx  
break; F3+ ;2GG2  
SortUtil.swap(queue,j,k); Yw @)0%G  
k = j; g<U\7Vp\1  
} ;]c@%LX  
} N$]B$vv  
private void fixUp(int k) { " E+V >V+  
while (k > 1) { 8 p D$/  
int j = k >> 1; OBY^J1St  
if (queue[j]>queue[k]) X)7_@,7  
break; vDI$ QUMD6  
SortUtil.swap(queue,j,k); X<G"Ga L  
k = j; "?9rJx$  
} tSibz l~  
} x6yYx_  
DR]=\HQ  
} (~S=DFsP  
kIl!n  
} FK;3atrz  
(|O9L s7N  
SortUtil: "06t"u<%  
fh%|6k?#M  
package org.rut.util.algorithm; 7)Cn 4{B6  
$?P5A E  
import org.rut.util.algorithm.support.BubbleSort; H@, h$$  
import org.rut.util.algorithm.support.HeapSort; }ejZk bP  
import org.rut.util.algorithm.support.ImprovedMergeSort; W*2d!/;7>  
import org.rut.util.algorithm.support.ImprovedQuickSort; \-?0ab3Z  
import org.rut.util.algorithm.support.InsertSort; p~Wy`g-  
import org.rut.util.algorithm.support.MergeSort; KBC?SxJSJc  
import org.rut.util.algorithm.support.QuickSort; WwDd62g  
import org.rut.util.algorithm.support.SelectionSort; #jj+/>ZOi  
import org.rut.util.algorithm.support.ShellSort; i}Q"'?  
lcVZ 32MQ  
/** S:(YZ%#  
* @author treeroot wK]p`:3  
* @since 2006-2-2 gwGw  
* @version 1.0 X 0vcBHh  
*/ G!T_X*^q2U  
public class SortUtil { %6.WGuO  
public final static int INSERT = 1; ;kD UQw  
public final static int BUBBLE = 2; 2A=q{7s  
public final static int SELECTION = 3; I+{2DY/}  
public final static int SHELL = 4; q0C%">>1 #  
public final static int QUICK = 5; emSky-{$u  
public final static int IMPROVED_QUICK = 6; Z% DJ{!Hnh  
public final static int MERGE = 7; xyD2<?dGUb  
public final static int IMPROVED_MERGE = 8; j:2TicHDC  
public final static int HEAP = 9; vf5q8/a  
[H[L};%=j  
public static void sort(int[] data) { xx@[ecW  
sort(data, IMPROVED_QUICK); =Y-.=}jp;  
} \,xa_zeO  
private static String[] name={ h! Bg} B~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e9RH[:  
}; B*(BsXQLY  
?9;CC]D  
private static Sort[] impl=new Sort[]{ VOJ/I Dl 4  
new InsertSort(), jF@BWPtF=  
new BubbleSort(), -UM|u_  
new SelectionSort(), I_m3|VCa|t  
new ShellSort(), %8H$62w]  
new QuickSort(), *_Vv(H&  
new ImprovedQuickSort(), _7z]zy@PC5  
new MergeSort(), q3v v^~  
new ImprovedMergeSort(), "}"/d(  
new HeapSort() *c\XQy  
}; 2!6E~<~HC  
,5V6=pr$  
public static String toString(int algorithm){ ^TD%l8o6  
return name[algorithm-1]; NLra"Z  
} J'ZC5Xr  
=w* 8   
public static void sort(int[] data, int algorithm) { H| _@9V  
impl[algorithm-1].sort(data); wz)s  
} gW<6dP'v  
; Xf1BG r  
public static interface Sort { ] s^7c  
public void sort(int[] data); Y0Tad?iC  
} tz8 fZ*n  
Qd~z<U l  
public static void swap(int[] data, int i, int j) { `#' j3,\6  
int temp = data; 'pT13RFD  
data = data[j]; Yj'9|4%+|  
data[j] = temp; /* qx5$~  
} ">G*hS  
} oN[}i6^,e  
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