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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。 ]xV7)/b5G  
插入排序: {8b6A~/  
HQTB4_K\  
package org.rut.util.algorithm.support; "jb?P$  
Y#C=ku  
import org.rut.util.algorithm.SortUtil; jr'O4bo%  
/** HOXqIZN85  
* @author treeroot yS lN|8d  
* @since 2006-2-2 M="%NxuS  
* @version 1.0 |PTL!>ym2  
*/ Kkdd}j  
public class InsertSort implements SortUtil.Sort{ =3""D{l  
]J m9D=  
/* (non-Javadoc) R6CxNPRJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5U%u S^%DP  
*/ Y~bp:FkS  
public void sort(int[] data) { e6#^4Y/+`  
int temp; ~99Ta]U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _^dWJ0  
} #%B1, .A  
} En-eG37 l  
} rVFAwbR  
A+NLo[swwu  
} 7$;mkHu4H%  
o^7}H{AE  
冒泡排序: nA5v+d-<T  
!dSY?1>U<  
package org.rut.util.algorithm.support; w/>k  
Fg`r:,(a  
import org.rut.util.algorithm.SortUtil; i%v^Zg&FU  
e#SNN-hKsJ  
/** V=\&eS4^"  
* @author treeroot My Af~&Y+  
* @since 2006-2-2 W!V06.  
* @version 1.0 h"M}Iz~|V?  
*/ .\LWV=B  
public class BubbleSort implements SortUtil.Sort{ 4|7L26,]5  
{_KuztJGA  
/* (non-Javadoc) (Q\QZu@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IiS1ubNtZ  
*/ XR]]g+Z  
public void sort(int[] data) { bG;vl; C  
int temp; 7H++ pOF  
for(int i=0;i for(int j=data.length-1;j>i;j--){ OJQ7nChMm  
if(data[j] SortUtil.swap(data,j,j-1); |]Pigi7y-  
} o7&Z4(V  
} IcI y  
} hFyN|Dqhds  
} b{(!Ls_ &  
xL=g(FN(6L  
} 9F ).i  
wW]|ElYR=  
选择排序: oI/@w  
9O~1o?ni  
package org.rut.util.algorithm.support; kVe}_[{m  
5/>G)&  
import org.rut.util.algorithm.SortUtil; %[&cy'  
2lE { P  
/** ^~eT# Y8  
* @author treeroot ;(TBg-LEK  
* @since 2006-2-2 82efqzT  
* @version 1.0 W^P%k:anK  
*/ .@/5Ln  
public class SelectionSort implements SortUtil.Sort { ?(;ygjyx  
6D/5vM1  
/* %t:1)]2  
* (non-Javadoc) pjrVPi5&t  
* x.>z2.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K;gm^  
*/ O/iew3YF  
public void sort(int[] data) { at ]Lz_\  
int temp; G2 xYa$&][  
for (int i = 0; i < data.length; i++) { Bn}@wO  
int lowIndex = i; (gs"2  
for (int j = data.length - 1; j > i; j--) { _av%`bb&z9  
if (data[j] < data[lowIndex]) { |o|0qG@g  
lowIndex = j; _H<ur?G  
} @fPiGu`L  
} 2p(K0PtX  
SortUtil.swap(data,i,lowIndex); O BF5Tl4  
}  oC >^V5  
} #oJ9BgDry  
akrEZ7A  
} ,Es5PmV@$%  
I]jVnQ>&  
Shell排序: bmzs!fg_~R  
~KHp~Xs`  
package org.rut.util.algorithm.support; J[RQF54qA{  
f*bs{H'5  
import org.rut.util.algorithm.SortUtil; !N?|[n1  
`b# w3 2  
/** Bn-%).-ED  
* @author treeroot Zb<DgJ=3  
* @since 2006-2-2 SN\;&(?G  
* @version 1.0 =DcKHL(m  
*/ P;mmK&&  
public class ShellSort implements SortUtil.Sort{ )7*Apy==x  
JG0TbM1(Bt  
/* (non-Javadoc) 9Z6O{ >  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  Z:u7`%  
*/ AIN_.=]"?  
public void sort(int[] data) { ~^KemwogPN  
for(int i=data.length/2;i>2;i/=2){ /8 Ca8Ju  
for(int j=0;j insertSort(data,j,i); f\2'/g}6a  
} &yp_wW-  
} y [.0L!C {  
insertSort(data,0,1); q J@XVN4   
} 0_,V}  
_N.ZpKVu  
/** hXmW,+1  
* @param data rnEWTk7&  
* @param j :M'3U g$t  
* @param i y~]>J^  
*/ L#m1!+J  
private void insertSort(int[] data, int start, int inc) { Nr uXXd  
int temp; M)i2)]F S  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +wS?Z5%mU  
} zT0FTAl ^  
} /c]I|$v  
} }#a d  
+'y$XR~W{  
} A ElNf:  
pV<18CaJ  
快速排序: !pQQkZol  
ppmDmi~X  
package org.rut.util.algorithm.support; QVQe9{ "0  
Ym2![FC1  
import org.rut.util.algorithm.SortUtil; 3' mQ=tKa  
YDz:;Sp\  
/** 87r#;ND  
* @author treeroot nhiCV>@y  
* @since 2006-2-2  G\ru%  
* @version 1.0 svHs&v  
*/ dl;^sn0s  
public class QuickSort implements SortUtil.Sort{ n;/yo~RR  
)Uo)3FAn  
/* (non-Javadoc) wRi!eN?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -]A,SBs  
*/ GbBcC#0  
public void sort(int[] data) { w)5eD+n\-  
quickSort(data,0,data.length-1); &,3.V+Sz  
} |r%6;8A]i  
private void quickSort(int[] data,int i,int j){ cQA;Y!Q #  
int pivotIndex=(i+j)/2; k`'^e/  
file://swap .ie\3q)  
SortUtil.swap(data,pivotIndex,j); Xj.6A,}^  
qMmh2a&  
int k=partition(data,i-1,j,data[j]); yI)~- E.  
SortUtil.swap(data,k,j); O F2*zU7M  
if((k-i)>1) quickSort(data,i,k-1); mj{TqF  
if((j-k)>1) quickSort(data,k+1,j); Vj2]-]Cm  
(wo.OH  
} |9@?8\   
/** >#)^4-e  
* @param data diaLw  
* @param i :BN qr[=b  
* @param j Y'DI@  
* @return ZZX|MA!  
*/ 1<Qb"FN!2  
private int partition(int[] data, int l, int r,int pivot) { [59_n{S 1  
do{ K.JKE"j)d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %f*8JUE16  
SortUtil.swap(data,l,r); ?qO_t;:0>  
} X8GIRL)lJ  
while(l SortUtil.swap(data,l,r); )8!""n~  
return l; J XPE9uH  
} BwEO2a{  
HX7"w   
} 1\$xq9  
W{*U#:Jx1  
改进后的快速排序:  wC}anq>>  
 &)T5V  
package org.rut.util.algorithm.support; J)"2^?!&B  
l*e*jA_>:7  
import org.rut.util.algorithm.SortUtil; 0h _9  
T oTehVw  
/** 9B{,q6  
* @author treeroot wJNiw)C  
* @since 2006-2-2 -2{NI.-Xd  
* @version 1.0 LD0x 4zm$m  
*/ C-V,3}=*2  
public class ImprovedQuickSort implements SortUtil.Sort { 7b_t%G"  
4%Z!*W*  
private static int MAX_STACK_SIZE=4096; xVf AlN37(  
private static int THRESHOLD=10; )R(kXz=M  
/* (non-Javadoc) wzwEYZN(q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W_Z%CBjcT  
*/ sC(IeGbX  
public void sort(int[] data) { 0r*E$|zZ  
int[] stack=new int[MAX_STACK_SIZE]; .hzzoLI2  
zn@<>o8hU  
int top=-1; X3-pj<JLY  
int pivot; b8r?Dd"T8  
int pivotIndex,l,r; '=Nb`n3%  
mCb(B48]%X  
stack[++top]=0; %iPWg  
stack[++top]=data.length-1; nQy.?*X  
idPx! fe  
while(top>0){ A,Wwt [Qw  
int j=stack[top--]; ;6KcX\g-  
int i=stack[top--]; "v@Y[QI  
NTb mI$(  
pivotIndex=(i+j)/2;  z"Miy  
pivot=data[pivotIndex]; ~:'tp28?  
.!e):&(8  
SortUtil.swap(data,pivotIndex,j); 2!Yq9,`  
a\pOgIp  
file://partition 'y[74?1  
l=i-1; I 8TqK  
r=j; MKf|(6;~  
do{ ?x1sm"]p'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _~/F-  
SortUtil.swap(data,l,r); SR!EQ<  
} _2xNio&  
while(l SortUtil.swap(data,l,r); -K eoq  
SortUtil.swap(data,l,j); z6)b XL[f  
*:gx1wd  
if((l-i)>THRESHOLD){ t~]n"zgovz  
stack[++top]=i; rofj&{w  
stack[++top]=l-1; `u$  Rd  
} H=RzY-\a%  
if((j-l)>THRESHOLD){ X'Q?Mh  
stack[++top]=l+1; ]Wr2 IM  
stack[++top]=j; Z}#'.y\ f  
} zisf8x7^W  
&W+lwEu  
} `?f6~$1  
file://new InsertSort().sort(data); +O"!*  
insertSort(data); Zgy~Y0Di  
} _N)/X|=~s  
/** tg-U x  
* @param data IJa6W`}  
*/ fGj YWw  
private void insertSort(int[] data) { |>|f?^  
int temp; `yF6-F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .j^tFvN~L  
} iZY4+ X  
} (+uM |a  
} PkX4 !  
|ecK~+  
} 0,~||H{  
kb3>q($  
归并排序: +q n[F70}  
Cm@rX A/  
package org.rut.util.algorithm.support; }?G([s56  
nVB.sab  
import org.rut.util.algorithm.SortUtil; :j^IXZW  
2qd5iOhX+  
/** [x{z}rYH  
* @author treeroot ,+2!&"zD  
* @since 2006-2-2 PWciD '!  
* @version 1.0 6`Hd)T5{w  
*/ gxnIur)  
public class MergeSort implements SortUtil.Sort{ I;1W6uD=  
|BGB60}]f  
/* (non-Javadoc) O|K-UTWH%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MrjgV+P}[  
*/ 5"sd  
public void sort(int[] data) { +pUG6.j%  
int[] temp=new int[data.length]; W4Z8U0co  
mergeSort(data,temp,0,data.length-1); mR,w~wP  
} {E=BFs  
9K!kU6Gh  
private void mergeSort(int[] data,int[] temp,int l,int r){ .`p,pt;  
int mid=(l+r)/2; _E %!5u  
if(l==r) return ; t 57MKDn  
mergeSort(data,temp,l,mid); s>J\h  
mergeSort(data,temp,mid+1,r); 6-E>-9]'E  
for(int i=l;i<=r;i++){ @ TJx U  
temp=data; R7\T.;8+  
} '+EtnWH s  
int i1=l; OQ(w]G0LP  
int i2=mid+1; 8c`E B-y  
for(int cur=l;cur<=r;cur++){ i~3\jD=<  
if(i1==mid+1) ;*%3J$T+  
data[cur]=temp[i2++]; qu\cU(H|  
else if(i2>r) T.(C`/VM  
data[cur]=temp[i1++]; k3(q!~a:.}  
else if(temp[i1] data[cur]=temp[i1++]; c,CcKy;+  
else Bnp\G h  
data[cur]=temp[i2++]; &?[g8A  
} WOg pDs  
} 3</W}]$)p  
A"tE~m;"7  
} nsL"'iQ  
C5Vlqc;  
改进后的归并排序: E3hXs6P  
Qli#=0{`  
package org.rut.util.algorithm.support; jn +*G<NJ  
{x,d9I  
import org.rut.util.algorithm.SortUtil; _-|/$ jZ  
"D,}|  
/** 8]K+,0m6  
* @author treeroot VUon>XQ G  
* @since 2006-2-2 M!YGv   
* @version 1.0 'yo-`nNFD  
*/ /IQ$[WR cx  
public class ImprovedMergeSort implements SortUtil.Sort { K 0e*K=UM  
P b-4$n2c  
private static final int THRESHOLD = 10; r>#4Sr  
M3U?\g  
/* }y1r yeW<  
* (non-Javadoc) >*MGF=.QG  
* c(b2f-0!4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QE|x[?7e,!  
*/ b_&:tE--]  
public void sort(int[] data) { 6&+}Hhe  
int[] temp=new int[data.length]; e'yw8U5E/  
mergeSort(data,temp,0,data.length-1); X2|&\G9c  
} w5 #;Lm  
Up1 n0  
private void mergeSort(int[] data, int[] temp, int l, int r) { j.!5&^;u4  
int i, j, k; I5*<J n  
int mid = (l + r) / 2; n-9a 0_{k  
if (l == r) ;m=k FZ?  
return; e45)t}'  
if ((mid - l) >= THRESHOLD) &^`[$LtYd  
mergeSort(data, temp, l, mid); shD4";8*@  
else : q>)c]  
insertSort(data, l, mid - l + 1); Quwq_.DU  
if ((r - mid) > THRESHOLD) "S+AkLe(  
mergeSort(data, temp, mid + 1, r); i#NtiZ.t=  
else bE,#,  
insertSort(data, mid + 1, r - mid); mBxMDnh  
=Fc}T%  
for (i = l; i <= mid; i++) { q[Tl#*P?y  
temp = data; cQ;@z2\  
} #qu;{I#W3  
for (j = 1; j <= r - mid; j++) { JXV#V7  
temp[r - j + 1] = data[j + mid]; ev #/v:$?  
} jM-7  
int a = temp[l]; l,6' S8=  
int b = temp[r]; ~g9~D}48k'  
for (i = l, j = r, k = l; k <= r; k++) { 4k9$' k  
if (a < b) { p"7]zq]'  
data[k] = temp[i++]; O=vD6@QI  
a = temp; 6i;q=N$'  
} else { LSR0yCU  
data[k] = temp[j--]; f 8\DAN  
b = temp[j]; 1,Es'  
} Ey.%: O-Dv  
} KjMwrMgC  
} n<P&|RTZ  
qm<-(Qc(W  
/** R|k:8v{V=  
* @param data _%3p&1ld  
* @param l XqU0AbQ  
* @param i ahdwoB   
*/ 2%v6h  
private void insertSort(int[] data, int start, int len) { p' 6h9/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6B]i}nFH{+  
}  f,kV  
} >7)QdaB  
} rmi&{o:  
} R_9M-RP6*  
 '9'f\  
堆排序: G5|'uKz2"  
62kA(F 0e,  
package org.rut.util.algorithm.support; XTA:Y7"O  
 #]QS   
import org.rut.util.algorithm.SortUtil; V*r/0|vd  
}+}Cl T  
/** Ga+Cb2$  
* @author treeroot sOVpDtZ]LR  
* @since 2006-2-2 @#*{* S8  
* @version 1.0 i1X!G|Awfv  
*/ L8f_^ *,  
public class HeapSort implements SortUtil.Sort{ D-D8La?0p  
]yQqx*  
/* (non-Javadoc) M1]w0~G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ve qB/Q X  
*/ P^ht$)Y  
public void sort(int[] data) { I]HLWF  
MaxHeap h=new MaxHeap(); nltOX@P-  
h.init(data); lKf kRyO_S  
for(int i=0;i h.remove(); nVrV6w  
System.arraycopy(h.queue,1,data,0,data.length); PbY.8d%2/k  
} $2Awp@j  
ul b0B"  
private static class MaxHeap{ mM L B?I  
@=}NMoNH  
void init(int[] data){ w#_7,*6]  
this.queue=new int[data.length+1]; |z8_]o+|r1  
for(int i=0;i queue[++size]=data; C8do8$  
fixUp(size); eY%Ep=J  
} JvEW0-B^l,  
} 3UF^Ff<wo  
EuA352x  
private int size=0; ?9 W2ax-4  
O$x +>^  
private int[] queue; xnJ#}-.7  
z:N?T0b(  
public int get() { aO}p"-'  
return queue[1]; BpGyjo J2  
} tk)}4b^\%j  
V3T.EW  
public void remove() { h#Mx(q  
SortUtil.swap(queue,1,size--); C?MKb D=K  
fixDown(1); A/&u /?*C  
} \acGSW .c  
file://fixdown ny!80I  
private void fixDown(int k) { 8Ht=B,7T  
int j; J*zQ8\f=}  
while ((j = k << 1) <= size) { uhv_'Q  
if (j < size %26amp;%26amp; queue[j] j++; 5!wjYQt3  
if (queue[k]>queue[j]) file://不用交换 cmYzS6f,7  
break; VD $PoP  
SortUtil.swap(queue,j,k);  %{UW!/  
k = j; )Jw$&%/{1  
} oLtzPC  
} [S-#}C?~  
private void fixUp(int k) {  ;\f0II3  
while (k > 1) { +;)Xu}  
int j = k >> 1; ~OLyG$JJ  
if (queue[j]>queue[k]) WRRR"Q$  
break; !b+!] 2~g}  
SortUtil.swap(queue,j,k); P(o>UDy  
k = j; T!pA$eE  
} rWqr-"0S.  
} Z#l6BXK  
.Iz JJp  
} 4/_! F'j  
6JeAXj1g+  
} qVO,sKQ{  
i5_l//]  
SortUtil: arS@l<79  
Bk@EQdn  
package org.rut.util.algorithm; jwuSne  
{9) HB:  
import org.rut.util.algorithm.support.BubbleSort; {%RwZ'  
import org.rut.util.algorithm.support.HeapSort; DGw*BN%`  
import org.rut.util.algorithm.support.ImprovedMergeSort; }IdkXAB.  
import org.rut.util.algorithm.support.ImprovedQuickSort; * bhb=~  
import org.rut.util.algorithm.support.InsertSort; [jxh$}?P  
import org.rut.util.algorithm.support.MergeSort; ]GsI|se  
import org.rut.util.algorithm.support.QuickSort; G)f!AuN=  
import org.rut.util.algorithm.support.SelectionSort; !aJ6Uf%R  
import org.rut.util.algorithm.support.ShellSort; G8MLg#  
Zlt,Us`  
/** \IEuu^  
* @author treeroot |oePB<N  
* @since 2006-2-2 \@T;/Pj{[  
* @version 1.0 sPl3JP&s  
*/ )cL`$h4DD  
public class SortUtil { 8A/rkoht*  
public final static int INSERT = 1; P)hGe3  
public final static int BUBBLE = 2; d/@P;YN!  
public final static int SELECTION = 3; H(O|y2   
public final static int SHELL = 4; 0QW;=@)d  
public final static int QUICK = 5; ($8!r|g5#  
public final static int IMPROVED_QUICK = 6; 4Me3{!HJz  
public final static int MERGE = 7; )T&r770  
public final static int IMPROVED_MERGE = 8; 2z AxGX  
public final static int HEAP = 9; ;!7M<T$&  
Mhb~wDQl  
public static void sort(int[] data) { (^_I Ny*  
sort(data, IMPROVED_QUICK); [r9HYju =  
} : w>R|]  
private static String[] name={ R((KAl]dL  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" i=hA. y`  
}; -6X+:r`>u  
zz<o4b R  
private static Sort[] impl=new Sort[]{ T-x9IoE  
new InsertSort(), "ub0}p4V  
new BubbleSort(), r^ '  
new SelectionSort(), RMid}BRE  
new ShellSort(), [M:<!QXw  
new QuickSort(), \C2HeA\#SW  
new ImprovedQuickSort(), x2/ciC  
new MergeSort(), 0Pt% (^  
new ImprovedMergeSort(), (h[. Ie  
new HeapSort() cK\?wZ| Y  
}; e5"5 U7  
H|MAbx 7  
public static String toString(int algorithm){ b&d4(dk  
return name[algorithm-1]; *iyc,f^w  
} jR+k x:+  
NSR][h_  
public static void sort(int[] data, int algorithm) { #BgiDLh  
impl[algorithm-1].sort(data); +CXq41g"c  
} {d)L0KXK  
hvA|d=R(  
public static interface Sort { Hq?dqg'%~  
public void sort(int[] data); g:6 `1C  
} ;RQ}OCz9}8  
sheCwhV  
public static void swap(int[] data, int i, int j) { }D3hP|.X  
int temp = data; ; 3sjTqD  
data = data[j];  9/I xh?  
data[j] = temp; Sw?EF8}[  
} axK/YE7t  
} [9F  
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3+5=?,请输入中文答案:八 正确答案:八