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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。 [a!)w@I:  
插入排序: n}dLfg *  
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package org.rut.util.algorithm.support; A!v:W6yiz  
tZY6{,K%4  
import org.rut.util.algorithm.SortUtil; d5"rCd[  
/** + } y"S-  
* @author treeroot r3+   
* @since 2006-2-2 ]wUH*\(y  
* @version 1.0 iB}*<~`.Eg  
*/ MnP+L'|  
public class InsertSort implements SortUtil.Sort{ Ri>ZupQ6  
K@vU_x0Sl  
/* (non-Javadoc) \ cdns;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >uxAti\  
*/ NcX`*18  
public void sort(int[] data) { aP]h03sS  
int temp;  L+CPT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ')TS'p,n  
} nE56A#,Q,  
} pV`/6 }  
} ovZ!}  
V0G[f}tm'  
} !xU[BCbfYV  
M}$Td_g  
冒泡排序: FzAzAl 5  
9TbbIP1  
package org.rut.util.algorithm.support; "|BSGV!8  
buDz]ec b  
import org.rut.util.algorithm.SortUtil; V@nZ_.  
]!uId#OH  
/** p || mR  
* @author treeroot iqFC~].)  
* @since 2006-2-2 !R![:T\,  
* @version 1.0 W^pf 1I8[  
*/ (|pM^+  
public class BubbleSort implements SortUtil.Sort{ O"#/>hmv-  
AwZz}J+  
/* (non-Javadoc)  6),!sO?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4HpKKhv"  
*/ L#S|2L_hC  
public void sort(int[] data) { /iL*)  
int temp; mNsd&Rk'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j9X|c7|  
if(data[j] SortUtil.swap(data,j,j-1); !;K zR&  
} 7nsovWp  
} q0b*#j  
} EMDYeXpV  
} >uDC!0)R  
-`NzBuV$2,  
} dK4w$~j{k  
q8HnPXV  
选择排序: j<k-w  
vpC?JXz=H  
package org.rut.util.algorithm.support; LQR^lD+_=  
z6P~HF+&h  
import org.rut.util.algorithm.SortUtil; AY;[v.Ff4  
n(i/jW~0w  
/** \Yn0|j>  
* @author treeroot .@ZrmO o]]  
* @since 2006-2-2 F3t IJz>3  
* @version 1.0 r7^v@  
*/ RRQIlI<  
public class SelectionSort implements SortUtil.Sort { t*)!BZ  
D G|v' #  
/* 2qQ;U?:q  
* (non-Javadoc) Xkk 8#Y":  
* ;%k C?Vzi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B*9?mcP\  
*/ %m|1LI(  
public void sort(int[] data) { >x6)AH.  
int temp; h6}rOchj  
for (int i = 0; i < data.length; i++) { 0M?zotv0#  
int lowIndex = i; :^-\KE` 3  
for (int j = data.length - 1; j > i; j--) { 4dm0:, G  
if (data[j] < data[lowIndex]) { Ktu~%)k%  
lowIndex = j; +~=j3U  
} *aq"c9  
} D;*cy<_K8  
SortUtil.swap(data,i,lowIndex); qJ .XI   
} x&"P^gh)  
} Q- w_ @~  
H7k@Br  
} m#-&<=  
7- C])9  
Shell排序: ^ 8YBW<9  
18p4]:L  
package org.rut.util.algorithm.support; k3KT':*  
i g .  
import org.rut.util.algorithm.SortUtil; <;uM/vS i  
 z:   
/** {;6a_L@q;|  
* @author treeroot fwlicbs'  
* @since 2006-2-2 '&2-{Y [!  
* @version 1.0 }8s&~f H  
*/ YLS*uXB&.  
public class ShellSort implements SortUtil.Sort{ REh\WgV!u  
z`NJelcuz\  
/* (non-Javadoc) S]Di1E^r;_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hztqZ:  
*/ F/[m.!Eo  
public void sort(int[] data) { *xITMi  
for(int i=data.length/2;i>2;i/=2){ b|;h$otC  
for(int j=0;j insertSort(data,j,i); Pjxj$>&;*j  
} id" l"  
} ~ Nf|,{[(5  
insertSort(data,0,1); Ix<!0! vk  
} mx}4iO:Xp  
.g?D3$|K  
/** g_A#WQyh\'  
* @param data gvD*^  
* @param j `M(st%@n  
* @param i xE$lx:C"FU  
*/ Bk^o$3#  
private void insertSort(int[] data, int start, int inc) { /{[p?7x>  
int temp; *B84Y.df  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2$`Y 4b3t  
} <M}O&?N 8x  
} Hs_7oy|P  
} b'z\|jY  
qQ6@43TC  
} GV28&!4sS  
y~wr4Q=  
快速排序: Aa]3jev  
:z *jl'L  
package org.rut.util.algorithm.support;  K V  
OVc)PMp  
import org.rut.util.algorithm.SortUtil; @K}h4Yok  
EJQT\c  
/** Pl-9FLJ  
* @author treeroot {"2CI^!/U.  
* @since 2006-2-2 TJ_6:;4,|_  
* @version 1.0 y$_]}<b  
*/ 8?x:PkK  
public class QuickSort implements SortUtil.Sort{ s&<76kwl  
$$< I}eMd>  
/* (non-Javadoc) >3&V"^r(|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KmM:V2@A$  
*/ LafBf6wds  
public void sort(int[] data) { !IB}&m  
quickSort(data,0,data.length-1); mEkYT  
} AT1{D!b  
private void quickSort(int[] data,int i,int j){ 8xG"hJR  
int pivotIndex=(i+j)/2; 0PsQ 1[1  
file://swap 9?~6{!m_9  
SortUtil.swap(data,pivotIndex,j); m|t\w|B2  
t}?-ao  
int k=partition(data,i-1,j,data[j]); vy2"B ch  
SortUtil.swap(data,k,j); r .6?|  
if((k-i)>1) quickSort(data,i,k-1); (0.JoeA`y  
if((j-k)>1) quickSort(data,k+1,j); (/!@ -]1  
%6m' |(-  
} bZK^q B  
/** @LDs$"f9=  
* @param data *K@O3n   
* @param i m/(/!MVy  
* @param j ;ceg:-Zqo  
* @return JnIG;/  
*/ Dhfor+Epy  
private int partition(int[] data, int l, int r,int pivot) { `D$^SHfyz  
do{ rmtCCPF?0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9 `q(_\x  
SortUtil.swap(data,l,r); "a33m:]J  
} RAws{<6T-  
while(l SortUtil.swap(data,l,r); C8)Paop$  
return l; ^N 4Y*NtV7  
} _#+l?\u  
aNQ(xiskb  
} Wg,@S*x(  
V[kn'QkWv  
改进后的快速排序: qt/6o|V  
n<<arO"cv  
package org.rut.util.algorithm.support; 'zT7$ .L  
,:MUf]Ky  
import org.rut.util.algorithm.SortUtil; DIWyv-  
]#rV]As  
/** !|]k2=+I  
* @author treeroot (n jTS+?  
* @since 2006-2-2 TBba3%  
* @version 1.0 !M9mX%UQ  
*/ pY&dw4V  
public class ImprovedQuickSort implements SortUtil.Sort { 6Yt3Oq<U  
GK6CnSV8d  
private static int MAX_STACK_SIZE=4096; rg]b$tL~  
private static int THRESHOLD=10;  E<0Mluk  
/* (non-Javadoc) QtW e,+WWV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \F\7*=xk  
*/ Aw4)=-LKO  
public void sort(int[] data) { C=U4z|Ym  
int[] stack=new int[MAX_STACK_SIZE]; \u[5O@v#  
U2vb&Qu/  
int top=-1; Yl$ @/xAa  
int pivot; 3webAaO  
int pivotIndex,l,r; O#C0~U]dDW  
nGc'xQy0  
stack[++top]=0; AeN:wOm  
stack[++top]=data.length-1; MBKF8b'k  
B9cWxe4R#  
while(top>0){ f;l}Z|dok6  
int j=stack[top--]; qs_cC3"=%=  
int i=stack[top--]; Nlwt}7  
C#1'kQO  
pivotIndex=(i+j)/2; B,Tv9(sv  
pivot=data[pivotIndex]; wgvCgr<  
|Zp') JiS  
SortUtil.swap(data,pivotIndex,j); Nl%5OBm  
wc"~8Ah  
file://partition ;'Z"CbS+  
l=i-1; \9od*y  
r=j; ;:J"- p  
do{ BePb8 k<y  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [C~N#S[]  
SortUtil.swap(data,l,r); &G\C[L  
} Q`Pe4CrWvu  
while(l SortUtil.swap(data,l,r); /~fu,2=7  
SortUtil.swap(data,l,j); .RmoO\ ,Gm  
2\+N<-(F5  
if((l-i)>THRESHOLD){ I|c?*~7*  
stack[++top]=i; xUa9>=JU{  
stack[++top]=l-1; iXXaB +w  
} yOb']  
if((j-l)>THRESHOLD){ m c@Z+t'  
stack[++top]=l+1; -qpM 6t  
stack[++top]=j; w Bm4~ ~_  
} Fy$ C._C$  
O<Ay`p5  
} C$LRX7Z`o  
file://new InsertSort().sort(data); bmKvvq  
insertSort(data); (r}StR+  
} Zc&pJP+M'U  
/** $ >].;y?$  
* @param data NxK.q)tj6  
*/ ?hIDyM  
private void insertSort(int[] data) { 9Q\B1Q  
int temp; N#R8ez`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1 un!  
} t 0p  
} $~ d6KFT  
} [=Nv=d<[p  
j-FMWEp  
} AAB_Ytf  
uOKdb6]r6  
归并排序: R /_vJHI  
w&]$!g4  
package org.rut.util.algorithm.support; I,& gKgh  
G#uB%:)&0u  
import org.rut.util.algorithm.SortUtil; YX3NZW2i  
NPa4I7`A  
/** puEu)m^  
* @author treeroot Rx.5;2m  
* @since 2006-2-2 ^hT2 ed +  
* @version 1.0 [+}0K{(O=  
*/ iP$>/[I  
public class MergeSort implements SortUtil.Sort{ Uz]=`F8  
mfDt_Iq  
/* (non-Javadoc) |^F$Ta  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?\X9Ei  
*/ V^}$f3\B  
public void sort(int[] data) { W}(T5D" 3x  
int[] temp=new int[data.length]; .=hVto[QC  
mergeSort(data,temp,0,data.length-1); j``Ku@/x0  
} QNXS.!\P  
wW<u)|>ye  
private void mergeSort(int[] data,int[] temp,int l,int r){ #D >:'ezm  
int mid=(l+r)/2; 6W;`}'ap  
if(l==r) return ; M%SNq|Lo  
mergeSort(data,temp,l,mid); u{l4O1k/c  
mergeSort(data,temp,mid+1,r); v&f\ Jv7  
for(int i=l;i<=r;i++){ I: MrX  
temp=data; c <Q*g  
} "`Xbi/i  
int i1=l; 3 "Qg"\  
int i2=mid+1; cVmF'g  
for(int cur=l;cur<=r;cur++){ 8N<m V^|}  
if(i1==mid+1) sdgI ,  
data[cur]=temp[i2++]; 4"^W/Zo  
else if(i2>r) 7.kH="@  
data[cur]=temp[i1++]; BcQw-<veu  
else if(temp[i1] data[cur]=temp[i1++]; mFd|JbW  
else :)+)L@By  
data[cur]=temp[i2++]; aH, NS   
} YnCuF0>  
} Ms+SJ5Lg  
#TeAw<2U  
} ,1v FX$  
N5xI;UV9'  
改进后的归并排序: AthR|I|8  
kmu7~&75  
package org.rut.util.algorithm.support; oj ,;9{-  
IiX2O(*ZE  
import org.rut.util.algorithm.SortUtil; ~BnmAv$m[  
m/,8\+  
/** _u~`RlA  
* @author treeroot AD6 b  
* @since 2006-2-2 D<*) ^^  
* @version 1.0 /}5)[9GC  
*/ !!~r1)zN  
public class ImprovedMergeSort implements SortUtil.Sort { 'loko#6  
VZ9`Kbu  
private static final int THRESHOLD = 10; =~21.p  
N)KN!!  
/* )2:U]d%pk  
* (non-Javadoc) Y"m}=\4{  
* `vf]C'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~C?)- ]bF  
*/ m*KI'~#$%  
public void sort(int[] data) { &nY#G HB  
int[] temp=new int[data.length]; )cm^;(#pV  
mergeSort(data,temp,0,data.length-1); EKmn@S-&P  
} #V Z js`d6  
/d$kz&aIV  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5R1? jlm  
int i, j, k; ~cfvL*~5  
int mid = (l + r) / 2; SzUH6|=.R=  
if (l == r) j& L@L.d  
return; i3$pqNe  
if ((mid - l) >= THRESHOLD) aZo>3z;  
mergeSort(data, temp, l, mid); 81)i>]  
else j`MK\*qmz  
insertSort(data, l, mid - l + 1); >;fn,9w  
if ((r - mid) > THRESHOLD) Sa:;j4  
mergeSort(data, temp, mid + 1, r); %e+*&Z',  
else iN5[x{^t  
insertSort(data, mid + 1, r - mid); * C*aH6*  
i=V2 /W}  
for (i = l; i <= mid; i++) { 7<X!Xok  
temp = data; 2=naPTP(  
} >.hDt9@4  
for (j = 1; j <= r - mid; j++) { 9]I{GyH  
temp[r - j + 1] = data[j + mid]; 1I8<6pi-  
} ^Qxv5HS2  
int a = temp[l]; J!@R0U.  
int b = temp[r]; w)/~Gn676  
for (i = l, j = r, k = l; k <= r; k++) { QEF$Jx  
if (a < b) { 7(<r4{1?  
data[k] = temp[i++]; d?/>Qqw:#  
a = temp; e&NJj:Ph*  
} else { vxrqUjK7  
data[k] = temp[j--]; X*hPE=2` p  
b = temp[j]; LFvZ 7M\\  
} In;+wFu;M  
} @r\{iSg&g.  
} ]y"=/Nu-Ja  
$1k@O@F(4  
/** #+|0o-  
* @param data | vxmgX)  
* @param l ]q&NO(:kbq  
* @param i NT9|``^Z  
*/ cV4Y= &  
private void insertSort(int[] data, int start, int len) { yI%q3lB}^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); XS.*CB_m_  
} f#gV>.P;h\  
} w`gT]Rn  
} Bz>5OuOVS\  
} ciFqj3JS  
{~XnmBs  
堆排序: Epm8S}6K  
(?"z!dgc  
package org.rut.util.algorithm.support; F;BCSoO4  
c Ze59  
import org.rut.util.algorithm.SortUtil; $\PU Y8  
Ms-)S7tMz  
/** SEH[6W3  
* @author treeroot %pf9Yd0t  
* @since 2006-2-2 sFsf~|  
* @version 1.0 9q\_UbF  
*/ fm q(!  
public class HeapSort implements SortUtil.Sort{ (D{J|  
D/hq~- g  
/* (non-Javadoc) `O0y8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ns5P,[pBOZ  
*/ eL{$=Um  
public void sort(int[] data) { be?Bf^O>  
MaxHeap h=new MaxHeap(); Z EvK  
h.init(data); YWL7.Y>%5  
for(int i=0;i h.remove(); flOXV   
System.arraycopy(h.queue,1,data,0,data.length); )c532 y  
} ^1_CS*  
,RP9v*  
private static class MaxHeap{ :@-.whj  
jINI<[v[  
void init(int[] data){ #L57d  
this.queue=new int[data.length+1]; Q8$;##hzt  
for(int i=0;i queue[++size]=data; (*AJ6BQWa  
fixUp(size); lr@w1*  
} "/Gw`^t  
} 6{yn;D4  
m7i(0jd +  
private int size=0; }c>vk  
d1'= \PYr  
private int[] queue; *p9k> )'J  
!T 9CpIM%  
public int get() { O2"V'(  
return queue[1]; ekqS=KfWl;  
} RL fQT_V  
k"%sdYkb!  
public void remove() { k;)mc+ ~+  
SortUtil.swap(queue,1,size--); c c/nzB  
fixDown(1); pgZQ>%  
} @.`k2lxGd~  
file://fixdown !YZKa-  
private void fixDown(int k) { w\{#nrhYU  
int j; kp#XpcS  
while ((j = k << 1) <= size) { Oqq' r"S  
if (j < size %26amp;%26amp; queue[j] j++; ?CcX>R-/  
if (queue[k]>queue[j]) file://不用交换 4t3>`x 7  
break; /XU=l0u  
SortUtil.swap(queue,j,k); }w-M .  
k = j; dczSW ]%  
} PZlPC#E-  
} *xY3F8  
private void fixUp(int k) { Ge7B%p8  
while (k > 1) { tmoaa!yRnT  
int j = k >> 1; M9m~ck  
if (queue[j]>queue[k]) Wh~,?}laj  
break; &0fV;%N  
SortUtil.swap(queue,j,k); XODp[+xEEt  
k = j; PsD)]V9%:  
} uZ'Z-!=CL  
} !nlr!+(fV  
Sw5:T  
} F^S]7{  
.rnT'""i<5  
} gsl_aW!  
.w'b%M  
SortUtil: 1&<o3)L:  
.yFO] r1aL  
package org.rut.util.algorithm; }[h]z7e2S  
l-S0Gn/'X  
import org.rut.util.algorithm.support.BubbleSort; #f/4%|t:  
import org.rut.util.algorithm.support.HeapSort; 9)o@d`*  
import org.rut.util.algorithm.support.ImprovedMergeSort; 'cQ,;y  
import org.rut.util.algorithm.support.ImprovedQuickSort; c\&;Xr  
import org.rut.util.algorithm.support.InsertSort; }maD8,:t  
import org.rut.util.algorithm.support.MergeSort; qywl G  
import org.rut.util.algorithm.support.QuickSort; n&zEYCSI  
import org.rut.util.algorithm.support.SelectionSort; *X ;ch55\  
import org.rut.util.algorithm.support.ShellSort; aw~h03R_Z  
5h0Hk<N  
/** 7J ?s&x  
* @author treeroot _Hfpizm  
* @since 2006-2-2 B& R?{y*  
* @version 1.0 ^u1Nbo  
*/ |5X59! JL  
public class SortUtil { 9yWf*s<  
public final static int INSERT = 1; N:'!0|6?x-  
public final static int BUBBLE = 2; 5 6.JB BZZ  
public final static int SELECTION = 3; *+2_!=4V  
public final static int SHELL = 4; ;Bj&9DZd  
public final static int QUICK = 5; u86PTp+  
public final static int IMPROVED_QUICK = 6; ~(huUW  
public final static int MERGE = 7; :@ VCKq!  
public final static int IMPROVED_MERGE = 8; +"bi]^\z  
public final static int HEAP = 9; pV_zePyOn  
Uxik&M  
public static void sort(int[] data) { 3EY m@oZj  
sort(data, IMPROVED_QUICK); /!A"[Tyt  
} P8|ANe1 v  
private static String[] name={ V2M4g  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yNn=r;FZQ  
}; !E_|Zp]up  
UnYb}rF#%  
private static Sort[] impl=new Sort[]{ +zq"dj_  
new InsertSort(), $p&eS_f  
new BubbleSort(), |yzv o"3  
new SelectionSort(), #s15AyKz5  
new ShellSort(), 5>daWmD  
new QuickSort(), c00rq ~<K  
new ImprovedQuickSort(), +PI}$c-|`  
new MergeSort(), gsM^Pu09ud  
new ImprovedMergeSort(), \AA9 m'BZ  
new HeapSort() -C}"1|P!  
}; _z{9V7n4  
#N >66!/V  
public static String toString(int algorithm){ ls!A'@J  
return name[algorithm-1]; 9p3~WA/M@  
} F kf4R5Y?  
;in-)`UC!  
public static void sort(int[] data, int algorithm) { GEh(pJ  
impl[algorithm-1].sort(data); <)T~_s  
} >A6W^J|[  
ztX$kX:_m  
public static interface Sort { YM'4=BlJHv  
public void sort(int[] data); 9#&H'mG  
} `BG>%#  
<OKc?[  
public static void swap(int[] data, int i, int j) { rxyeix  
int temp = data; fDfph7[)  
data = data[j]; ty rP[y  
data[j] = temp; 7Re\*[)T  
} S7nx4c2xK~  
} ~LV]cX2J(  
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