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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。 V^G+_#@,,  
插入排序: )buy2#8UW  
1?p:66WmR  
package org.rut.util.algorithm.support; %tkL<e  
gY-}!9kW]  
import org.rut.util.algorithm.SortUtil; JKYl  
/** R^ I4_ZA  
* @author treeroot ]Ah<kq2sk  
* @since 2006-2-2 &s.-p_4w^D  
* @version 1.0 0[Zs8oRiI  
*/ "\afIYS I  
public class InsertSort implements SortUtil.Sort{ J(,gLl  
QA!'p1{#  
/* (non-Javadoc) M|z4Dy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bq5?fPBrq  
*/ x*^)B~7}  
public void sort(int[] data) { ,tFLx#e#  
int temp; GV)DLHiyxX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N':d T  
} c&L|e$C]  
} +{ e2TY  
} b Oh[(O!  
jvE&%|Ngw  
} Xdf;'|HO  
%8% 0l*n'  
冒泡排序: J]*?_>"#8  
;ahI}}  
package org.rut.util.algorithm.support; JHVesX  
ss7Z-A4z  
import org.rut.util.algorithm.SortUtil; ~m7?:(/lb  
&ujq6~#  
/** g31\7\)Ir  
* @author treeroot 6O'B:5~[2  
* @since 2006-2-2 eNt1P`2[  
* @version 1.0 ^zS|O]Tx  
*/ ~ln96*)M;  
public class BubbleSort implements SortUtil.Sort{ P.t7_v>  
>RmL0d#B  
/* (non-Javadoc) RjR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r<kqs,-~  
*/ ~rz%TDX0\  
public void sort(int[] data) { \%;5$ovV  
int temp; _vE[TFy  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~{yQsEU  
if(data[j] SortUtil.swap(data,j,j-1); +u7nx  
} fJG!TQJ[Y  
} Ria*+.k@"B  
} yD&UH_ 1g  
} AUkePp78  
,?!4P+ob  
} 3:P "6mN  
xOpCybmc  
选择排序: X9uYqvP\(  
s\1c.  
package org.rut.util.algorithm.support; N^tH&\G\m  
0',-V2  
import org.rut.util.algorithm.SortUtil; 0(!=N 1l  
[E%Ov0OC  
/** z 4`H<Pn  
* @author treeroot e#uF?v]O  
* @since 2006-2-2 &f>1/"lnd\  
* @version 1.0 _/[(&}M  
*/ w8AHs/'r  
public class SelectionSort implements SortUtil.Sort { cLnvb!g'#  
h)C `w'L  
/* ZNbb8v  
* (non-Javadoc) 4^BHJOvs  
* v4x1=E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yB^_dE  
*/ 6Yx/m  
public void sort(int[] data) { 6/thhP3`-  
int temp; 3LD`Ep   
for (int i = 0; i < data.length; i++) { 6oLq2Z8uP  
int lowIndex = i; y{\K:    
for (int j = data.length - 1; j > i; j--) { ?qjlWCV|e  
if (data[j] < data[lowIndex]) { !+I!J s"  
lowIndex = j; 8(A+"H(  
} +q3E>K9a  
} _"%-=^_  
SortUtil.swap(data,i,lowIndex); `~3y[j]kO  
} rw ou[QU  
} sv?Lk4_  
dD8f`*"*=  
} HBnnIbEtF'  
)[hQK_e]  
Shell排序: .q7o7J%  
[S!_ubP5  
package org.rut.util.algorithm.support; )o8]MWT\;  
pO_L,~<  
import org.rut.util.algorithm.SortUtil; ({AqL#x`u  
J'>i3e Lq  
/** tO ^KCnL  
* @author treeroot ~<#!yRy>r  
* @since 2006-2-2 U#!f^@&AB  
* @version 1.0 `[Xff24(eb  
*/ A5> ,e|  
public class ShellSort implements SortUtil.Sort{ m2"~.iM8  
nXOJ  
/* (non-Javadoc) Z6`[ dAo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2oFHP_HVfu  
*/ %7~~*_G  
public void sort(int[] data) { H#;-(`F  
for(int i=data.length/2;i>2;i/=2){ 1tQl^>r16  
for(int j=0;j insertSort(data,j,i); <);Nc1  
} $R[ggH&  
} AR-&c 3o  
insertSort(data,0,1); Xy(o0/7F9  
} #2023Zo]  
wfxg@<WR  
/** KDX34Fr1  
* @param data \{ui{8+G  
* @param j nZ 0rxx[V?  
* @param i wd`lN,WiW  
*/ !4f0VQI  
private void insertSort(int[] data, int start, int inc) { l4sFT)}-J  
int temp; do1aH$Iw  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2= 6}! Y  
} IA XoEBlMs  
} ' 4nR^,  
} eD4o8[s  
*h>KeIB;  
}  hVB^:  
P+~{q.|._c  
快速排序: vA*Ud;%R  
MZX-<p+  
package org.rut.util.algorithm.support; O+o1R24JI  
VS lIeZ  
import org.rut.util.algorithm.SortUtil; #JH#Qg  
F#w= z/  
/** &O5W  
* @author treeroot 1 f;k)x  
* @since 2006-2-2 E$'Zd,|f=  
* @version 1.0 Sb&[V>!2^  
*/ 5:ZM-kZT  
public class QuickSort implements SortUtil.Sort{ ']hB_ 4v  
=hO0 @w  
/* (non-Javadoc) HNRZ59Yyq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X;I;CZ={  
*/ *c+Kqz-  
public void sort(int[] data) { F`$V H^%V  
quickSort(data,0,data.length-1); $=iV)-  
} <"g ^V  
private void quickSort(int[] data,int i,int j){ ;oQ*gd  
int pivotIndex=(i+j)/2; <d GGH  
file://swap XJ|CC.]1u  
SortUtil.swap(data,pivotIndex,j); jQp7TdvLE$  
=~i~SG/f  
int k=partition(data,i-1,j,data[j]); EVW{!\8[  
SortUtil.swap(data,k,j); JEK 6Ms;)A  
if((k-i)>1) quickSort(data,i,k-1); w}<CH3cx  
if((j-k)>1) quickSort(data,k+1,j); ^f -?xXPx  
e.<$G'  
} oc>ne]_'  
/** SJRiMR_F~  
* @param data f<V#Yc(U }  
* @param i :1eJc2o  
* @param j y^#jM  
* @return ?]'Rz\70  
*/ $\|$ekil4  
private int partition(int[] data, int l, int r,int pivot) { ,{ C   
do{ Efm37Kv5l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q3M;'m  
SortUtil.swap(data,l,r); "0F =txduS  
} MjAF&bD^  
while(l SortUtil.swap(data,l,r); 0pWF\<IZ  
return l; lH6zZ8rh  
} @tY)s  
.`OyC'  
} b{C3r3B8  
S(^*DV  
改进后的快速排序: ]OE{qXr{  
0jsU^m<g  
package org.rut.util.algorithm.support; 9OeY59 :  
\>8"r,hG|  
import org.rut.util.algorithm.SortUtil; +1Ha,O k  
li4rK <O  
/** Vj7(6'Hg  
* @author treeroot f-N:  
* @since 2006-2-2 2t3'"8xJ  
* @version 1.0 )SMS<J  
*/ %t&5o>1C  
public class ImprovedQuickSort implements SortUtil.Sort { AR i_m  
-'FzH?q:  
private static int MAX_STACK_SIZE=4096; .u3!%{/v(c  
private static int THRESHOLD=10; Ds4n>V,o  
/* (non-Javadoc) #:{Bd8PS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O Xy>Tlv  
*/ S{7*uK3$  
public void sort(int[] data) { 4#$~gTc@  
int[] stack=new int[MAX_STACK_SIZE]; }|rnyYA  
hKq#i8py  
int top=-1; NGD?.^ (G  
int pivot; M^\#(0^2@  
int pivotIndex,l,r; Vd2bG4*=  
fZ2>%IxG}  
stack[++top]=0; VjbRjn5LI  
stack[++top]=data.length-1; }Z MbTsm  
~7Ey9wRkD  
while(top>0){ %t&n%dhJ  
int j=stack[top--]; !7MC[z(|N  
int i=stack[top--]; YN1P9j#0d  
d`D<PT(\  
pivotIndex=(i+j)/2; )GDP?Nc<Ik  
pivot=data[pivotIndex]; lE~5 b  
:yN;_bC!b%  
SortUtil.swap(data,pivotIndex,j); qEC -'sl<  
U^tr Z])  
file://partition 4^T@n$2N  
l=i-1; S) /(~  
r=j; uXiAN#1  
do{  <StyO[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G992{B  
SortUtil.swap(data,l,r); !/W[6'M#p  
} {AbQaw  
while(l SortUtil.swap(data,l,r); @EZ@X/8{&  
SortUtil.swap(data,l,j); qJ=4HlLno  
:-B,Q3d  
if((l-i)>THRESHOLD){ zY\pZG  
stack[++top]=i; 0FrmZ$  
stack[++top]=l-1; /3F4t V  
} Az29?|e  
if((j-l)>THRESHOLD){ 5?+ECxPt  
stack[++top]=l+1; NIcPjo  
stack[++top]=j; xS%Z   
} T^3_d93}d  
XK[cbVu  
} lwEJ)Bv  
file://new InsertSort().sort(data); 99%oY  
insertSort(data); A;nrr1-0  
} nUi 4!|r  
/** 5[.Dlpa'7  
* @param data F-?K]t#  
*/ T8& kxp  
private void insertSort(int[] data) { $Hcp.J[O  
int temp; 8W$uw~|dw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ezRhSN?  
}  -1Acprr  
} 3n;UXYJ%  
} w%jc' ;|  
.i[rd4MCK  
} lP*_dt9  
Y4cIYUSc  
归并排序: x8I=I"Sp  
okfGd= &  
package org.rut.util.algorithm.support; }J27Y ;Zp9  
>U\,(VB  
import org.rut.util.algorithm.SortUtil; :_;9&[H9ha  
kwRXNE(k]_  
/** t sdkpt  
* @author treeroot cd1M0z  
* @since 2006-2-2 iiS^xqSNCt  
* @version 1.0 QXZjsa_|  
*/ s`W\`w}  
public class MergeSort implements SortUtil.Sort{ ydo"H9NOS  
qgd#BJ=  
/* (non-Javadoc) R)% Jr.U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +]^6&MqO  
*/ 5$o]D  
public void sort(int[] data) { s@^ (1g[w`  
int[] temp=new int[data.length]; f/t1@d!  
mergeSort(data,temp,0,data.length-1); %a%x`S3  
} '\qd{mM\r  
Vb>!;C  
private void mergeSort(int[] data,int[] temp,int l,int r){ dI'cZt~n  
int mid=(l+r)/2; l:v:f@M&  
if(l==r) return ; G}1?lO_d`  
mergeSort(data,temp,l,mid); hA1\+r  
mergeSort(data,temp,mid+1,r); {2<A\nW  
for(int i=l;i<=r;i++){ OQ&?^S`8',  
temp=data; 0PIiG-o9  
} f`w$KVZ1!w  
int i1=l; 1"J\iwN3  
int i2=mid+1; Hn"xn79nc  
for(int cur=l;cur<=r;cur++){ __HPwOCG7  
if(i1==mid+1) ))"J  
data[cur]=temp[i2++]; s[h& Uv"G  
else if(i2>r) F(*~[*Ff  
data[cur]=temp[i1++];  DJ?kQ  
else if(temp[i1] data[cur]=temp[i1++]; e573UB  
else }t!,{ZryE1  
data[cur]=temp[i2++]; C2RR(n=N^  
} 8 x$BbK  
} eekp&H$'s  
.a._WZF  
} ^E_`M:~  
RUHQ]@d#T  
改进后的归并排序: R*~<?}Rr  
b~?FV>gl  
package org.rut.util.algorithm.support; u/?s_OR  
KLv`Xg\  
import org.rut.util.algorithm.SortUtil; _,V 9^  
&9b sTm  
/** k2Yh?OH  
* @author treeroot k$`~,LJp  
* @since 2006-2-2 HMsTm}d  
* @version 1.0 `Oz c L  
*/ TCAtb('D  
public class ImprovedMergeSort implements SortUtil.Sort { =Q985)Y&  
U X)k;h  
private static final int THRESHOLD = 10; %_xRS  
n(^{s5 Rr  
/* 90OSe{  
* (non-Javadoc) $]:yc n9l  
* 2 O\p`,.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  # Vz9j  
*/ rj zRZ  
public void sort(int[] data) { l \~w(8g<A  
int[] temp=new int[data.length]; k(|D0%#b7  
mergeSort(data,temp,0,data.length-1); 69{^Vfd;Y  
} JjarMJr| D  
7FL!([S5i  
private void mergeSort(int[] data, int[] temp, int l, int r) { u,i~,M  
int i, j, k; ud]O'@G<  
int mid = (l + r) / 2; FHpS?htRy  
if (l == r) P,y*H_@k  
return; UJ-IK|P.#  
if ((mid - l) >= THRESHOLD) (jYHaTL6Y'  
mergeSort(data, temp, l, mid); S;#S3?G  
else ab ?   
insertSort(data, l, mid - l + 1); (`+%K_  
if ((r - mid) > THRESHOLD) II$B"-  
mergeSort(data, temp, mid + 1, r); {@K>oaZ  
else _l$V|  
insertSort(data, mid + 1, r - mid); 39| W(,  
,!U._ic'B  
for (i = l; i <= mid; i++) { pyA;%vJn  
temp = data; 4%L`~J4 wr  
} * ^R?*vNs  
for (j = 1; j <= r - mid; j++) { -r%4,4  
temp[r - j + 1] = data[j + mid]; c@d[HstBJ  
} A[QUFk(  
int a = temp[l]; 6Yw;@w\  
int b = temp[r]; cVjs-Xf7D%  
for (i = l, j = r, k = l; k <= r; k++) { FncK#hZ.  
if (a < b) { *?'nA{a)E  
data[k] = temp[i++]; |sd0fTK  
a = temp; 4/Ub%t -  
} else { L{H` t{ A  
data[k] = temp[j--]; HGqT"N Jr  
b = temp[j]; ??& Q"6Oe  
} &2-dZK  
} &DoYz[q  
} !{'C.sb?~  
c#'t][Ii  
/** G'b*.\=  
* @param data }F3}-5![  
* @param l ciRn"X=l  
* @param i KQ0Zy  
*/ !#l>+9  
private void insertSort(int[] data, int start, int len) { AD_RU_a9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +"1@ 6,M  
} YlfzHeN1  
} @=CN#D12  
} H4C]%Q  
}  + ]I7]  
;&mefaFlWp  
堆排序: _*\:UBZx6  
d{^9` J'  
package org.rut.util.algorithm.support; UIS\t^pJD  
fFu+P<?"  
import org.rut.util.algorithm.SortUtil; w1q-bIU  
VJW%y)_[  
/** V$U#'G>m  
* @author treeroot om6'%nXhn  
* @since 2006-2-2 A")F7F31c  
* @version 1.0 t[HfaW1W  
*/ fBtTJ+51}  
public class HeapSort implements SortUtil.Sort{ Z$qLY<aV  
xUT]6T0dB  
/* (non-Javadoc) hSQ*_#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S]_iobWK  
*/ 1/b5i8I2 v  
public void sort(int[] data) { )b^yAzL?  
MaxHeap h=new MaxHeap(); MTm}qx@L  
h.init(data); a3t[Tk;  
for(int i=0;i h.remove(); P)7:G?OTx  
System.arraycopy(h.queue,1,data,0,data.length); \@")2o+  
} )anprhc  
 bT(}=j  
private static class MaxHeap{ cJ[ gCS  
dk<) \C"  
void init(int[] data){ W=zHD 9  
this.queue=new int[data.length+1]; }<m'Nkz<X  
for(int i=0;i queue[++size]=data; #0OW0:Q  
fixUp(size); XMt)\r.  
} 5d ?\>dA  
} ?K5S{qG'O  
v6uXik  
private int size=0; sa8Q1i&%  
.%~m|t+Rt  
private int[] queue; [PXv8K%]p  
Uwj|To&QR  
public int get() { Y!!w*G9b  
return queue[1]; PfF5@W;E;  
} !2 YvG%t^6  
,x (?7ZW>  
public void remove() { -^C^3pms  
SortUtil.swap(queue,1,size--); be^+X[  
fixDown(1); -zn$h$N4  
} *@;Pns]L-  
file://fixdown ),DLrGOl  
private void fixDown(int k) { {tE9m@[AF  
int j; CKB~&>xx  
while ((j = k << 1) <= size) { &E& _Z6#  
if (j < size %26amp;%26amp; queue[j] j++; [g<rzhC~=  
if (queue[k]>queue[j]) file://不用交换 Epo/}y  
break; ks3ydHe`  
SortUtil.swap(queue,j,k); n-djAhy  
k = j; H3Ws$vl9n  
} yRd[ $p  
} \0)v5u  
private void fixUp(int k) { r Uau? ?  
while (k > 1) { ut SW>  
int j = k >> 1; =}F}XSvXH  
if (queue[j]>queue[k]) d8N{sT  
break; TwdY6E3`  
SortUtil.swap(queue,j,k); Hl"^E*9x  
k = j; eMHBY6<~=  
} $U*b;'o  
} (U`<r-n\n  
jWpm"C  
} Vt4KG+zm  
G;jX@XqZ  
} ;T-`~  
i#4}xvi  
SortUtil: l%\p  
 $I*<gn9  
package org.rut.util.algorithm; w20)~&LE-  
|3]#SqX  
import org.rut.util.algorithm.support.BubbleSort; #(Xv\OE  
import org.rut.util.algorithm.support.HeapSort; z^,P2kqK_  
import org.rut.util.algorithm.support.ImprovedMergeSort; %fJ~ 3mu  
import org.rut.util.algorithm.support.ImprovedQuickSort; _P}wO8  
import org.rut.util.algorithm.support.InsertSort; >;^t)6  
import org.rut.util.algorithm.support.MergeSort; Rz03he  
import org.rut.util.algorithm.support.QuickSort; Y|X!da/  
import org.rut.util.algorithm.support.SelectionSort; (&o|}"kRq  
import org.rut.util.algorithm.support.ShellSort; w ]%EJ|'  
[8 I*lsS  
/** WALK@0E  
* @author treeroot 0bz':M#k &  
* @since 2006-2-2 >~}}*yp  
* @version 1.0 u2o196,Ut  
*/ SJ7-lben3  
public class SortUtil { DeK&_)g| Z  
public final static int INSERT = 1; ->9waXRDz)  
public final static int BUBBLE = 2; R+&{lc  
public final static int SELECTION = 3; ;owU]Xk%8K  
public final static int SHELL = 4; TdKo"H*C  
public final static int QUICK = 5; Y@l>4q")  
public final static int IMPROVED_QUICK = 6; '/U%-/@  
public final static int MERGE = 7; VX6M4<8  
public final static int IMPROVED_MERGE = 8; 'hNRIM1  
public final static int HEAP = 9; q.:j yj6  
vp|.x |@  
public static void sort(int[] data) { +*`>7m<^  
sort(data, IMPROVED_QUICK); `Lj'2LoER  
} E51'TT9  
private static String[] name={ ;659E_y>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hd>_K*oH  
}; |-Q="7b%  
k*ZYT6Z?  
private static Sort[] impl=new Sort[]{ fG" 4\A  
new InsertSort(), kNg{  
new BubbleSort(), eW\C@>Ke  
new SelectionSort(), bbG!Fg=qQ?  
new ShellSort(), bMGU9~CeJ  
new QuickSort(), O5v~wLx9e  
new ImprovedQuickSort(), 1$n!Lj=5  
new MergeSort(), M2Zk1Z  
new ImprovedMergeSort(), ~P,@">}  
new HeapSort() n2N:rP  
}; <Kk[^.7C;  
D6fGr$(N%  
public static String toString(int algorithm){ BJP^?FUd=,  
return name[algorithm-1]; /St d6B*  
} (.~,I+Cz'  
tSX,*cz  
public static void sort(int[] data, int algorithm) { [A'9sxG  
impl[algorithm-1].sort(data); ijeas<  
} $wm8N.I3I  
K<vb4!9Z9  
public static interface Sort { ?WBA:?=$58  
public void sort(int[] data); 9jJ:T$}  
}  K)P].htw  
F7&Oc)f"B  
public static void swap(int[] data, int i, int j) { lEC91:Jyt  
int temp = data; Ih_=yk  
data = data[j]; )YPu t.  
data[j] = temp; jmr1e).];  
} +5N09$f;R  
} 1$v1:6  
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3+5=?,请输入中文答案:八 正确答案:八