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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。 g5y`XFY  
插入排序: mZ2CG O R  
:{N*Z}]  
package org.rut.util.algorithm.support; U#c Gd\b  
#Lpw8b6  
import org.rut.util.algorithm.SortUtil;  [Q{\Ik  
/** %VFoK-a  
* @author treeroot YnuY/zDF  
* @since 2006-2-2 ,@c1X:  
* @version 1.0 VsJ+-IHm  
*/ u 3#+fn_  
public class InsertSort implements SortUtil.Sort{ }3A~ek#*~  
U+qyS|i  
/* (non-Javadoc) bS;_xDXd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) McN[  
*/ g=[OH  
public void sort(int[] data) { Cyd/HTNh<  
int temp; ]}PXN1(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); < #ON  
} ;YR /7  
} b6 %m*~  
}  NdRcA  
LT<2 n.S  
} )M.s<Y  
x;)I%c  
冒泡排序: ?tY+P`S  
X+ITW#  
package org.rut.util.algorithm.support; 2zqaR[C  
SFRP ?s  
import org.rut.util.algorithm.SortUtil; Bkd$'7UT  
e)wi}\:q_  
/** )-_^vB  
* @author treeroot 3nG.ah  
* @since 2006-2-2 +Ps.HW#NY  
* @version 1.0 I)V=$r{  
*/ $/s"It  
public class BubbleSort implements SortUtil.Sort{ lwq:0Rj@Q  
 s[{[pIH  
/* (non-Javadoc) ~w3u(X$m"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Ztqh Xr  
*/ _]OY[&R  
public void sort(int[] data) { JyZuj>` 6  
int temp; *0xL(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Vt(Wy  
if(data[j] SortUtil.swap(data,j,j-1); F| eWHw?t  
} @Suz-j(H  
} zawu(3?~)5  
}  Rpgg :  
} z^U+ oG  
&'$Bk5D@G  
} $ uHQl#!;  
@KK6JyOTQ  
选择排序: U}5fjY  
=}#yi<Lt  
package org.rut.util.algorithm.support; Cu8mNB{H  
3~T ~Bs  
import org.rut.util.algorithm.SortUtil; ekvs3a^  
(O{OQk;CF  
/** *rmC3'}s  
* @author treeroot ?4%H(k5A  
* @since 2006-2-2 H P.=6bJWi  
* @version 1.0 Q"dq_8\`U  
*/ It[51NMal  
public class SelectionSort implements SortUtil.Sort { u:f ]|Q  
^AH[]sE_  
/* gLX<> |)*  
* (non-Javadoc) <4; nq~  
* J)YlG*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FL' }~il  
*/ Jz` jN~  
public void sort(int[] data) { dhtH&:J< ;  
int temp; Q4m> 3I  
for (int i = 0; i < data.length; i++) { ]UkH}Pt'3  
int lowIndex = i; 3_)I&RM  
for (int j = data.length - 1; j > i; j--) { oj djy#:  
if (data[j] < data[lowIndex]) { &^"Ru?MK  
lowIndex = j; o6MFMA+vi  
} 3W7^,ir  
} QMBT8x/+_'  
SortUtil.swap(data,i,lowIndex); bFX{|&tHU  
} KkZx6A)$u  
} iSCkV2  
`-uE(qp  
} Ax&!Nz+?  
zbxW U]<S?  
Shell排序: _=~u\$  
ri{*\LV*@  
package org.rut.util.algorithm.support; TI DgIK  
'hjEd.  
import org.rut.util.algorithm.SortUtil; H ni^S  
@e)}#kN.  
/** f256;3n  
* @author treeroot cF8  2wg  
* @since 2006-2-2 $Aw@xC^!  
* @version 1.0 |T6K?:U7  
*/ K5qCPt`'  
public class ShellSort implements SortUtil.Sort{ M M@,J<  
}n==^2  
/* (non-Javadoc) @3?>[R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5)RZJrN]  
*/ !d N[9}  
public void sort(int[] data) { L(TM& ps\-  
for(int i=data.length/2;i>2;i/=2){ ;\*3A22 #  
for(int j=0;j insertSort(data,j,i); J,?#O#j  
} 77@N79lqO  
} !"F;wg$  
insertSort(data,0,1); ,/w*sE  
} 3%+ ~"4&  
"Au4&Fu  
/** a&_ h(  
* @param data G\gjCp?!  
* @param j 5*$yY-A  
* @param i O=2|'L'h!  
*/ k4ti#3W5eG  
private void insertSort(int[] data, int start, int inc) { ,s~l; Gkj  
int temp; 5?-HQoT)G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bgor W"'  
} wD9K\%jIr!  
} ]W5*R07  
} UTkPA2x  
|'?vlUCd  
} 3s%?)z  
N[/<xW~x?4  
快速排序: pt <zyH3Z  
&zJI~R  
package org.rut.util.algorithm.support; dTg`z,^F  
/]`@.mZ9:  
import org.rut.util.algorithm.SortUtil; 3NpB1lgh&:  
q}P@}TE  
/** DO: ,PZX  
* @author treeroot J9mK9{#q  
* @since 2006-2-2 ?#K.D vGJ  
* @version 1.0 *C*ZmC5  
*/ GY]P(NU  
public class QuickSort implements SortUtil.Sort{ RM|J |R  
|Vpp'ipr  
/* (non-Javadoc) ~qgh w@Q~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +5zXbfO  
*/ {fXkbMO|  
public void sort(int[] data) { Nj>6TD81u  
quickSort(data,0,data.length-1); XZ%,h  
} ]rlZP1".  
private void quickSort(int[] data,int i,int j){ ^~H}N$W"-q  
int pivotIndex=(i+j)/2; eg;7BZim{  
file://swap !vwio!  
SortUtil.swap(data,pivotIndex,j); ]UvB+M]Lv)  
6iU&9Z<%  
int k=partition(data,i-1,j,data[j]); 8o5[tl ?w  
SortUtil.swap(data,k,j); [{7#IZL  
if((k-i)>1) quickSort(data,i,k-1); ps{4_V-3u  
if((j-k)>1) quickSort(data,k+1,j); K}l3t2uk  
]pR?/3  
} arL>{mj  
/** 7H3v[ f^Q  
* @param data 59Pc:Gg;  
* @param i R0-0  
* @param j *igmi9A  
* @return T3{O+aRt  
*/ '8q3ub<\  
private int partition(int[] data, int l, int r,int pivot) { z0 9Gp}^;  
do{ oV%:XuywT  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MRLiiIrq,5  
SortUtil.swap(data,l,r); B"GC|}N )v  
} :'p)xw4K|  
while(l SortUtil.swap(data,l,r); *J-pAN  
return l; G8M~}I/)  
} O)dnr8*  
uuY^Q;^I*  
} CQWXLQED>  
DsHF9Mn  
改进后的快速排序: D]@(LbMG4  
J8:s=#5  
package org.rut.util.algorithm.support; C7%R2>}?f  
HgQjw!  
import org.rut.util.algorithm.SortUtil; !eyLh&]5  
;73S;IPR  
/** FSEf0@O:  
* @author treeroot W>pe-  
* @since 2006-2-2 vvxxwZa=O  
* @version 1.0 Nn05me"X  
*/ ^EUR#~b5iy  
public class ImprovedQuickSort implements SortUtil.Sort { MLdwf}[  
wsQnjT>  
private static int MAX_STACK_SIZE=4096; qf0pi&q  
private static int THRESHOLD=10; X/4CXtX^  
/* (non-Javadoc) oXG_6E!^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `jE[Xt"@  
*/ .Pm5nS  
public void sort(int[] data) { UXct+l  
int[] stack=new int[MAX_STACK_SIZE]; 1-gM)x{Jr  
tyR?A>F4  
int top=-1;  y<Koc>8  
int pivot; KtQs uL%  
int pivotIndex,l,r; ^OY$ W  
}WsPuo  
stack[++top]=0; M}|(:o3Yo  
stack[++top]=data.length-1; iE'_x$i  
lju5+0BSb  
while(top>0){ 8&@=Anc&q  
int j=stack[top--]; m^ xTV-#l@  
int i=stack[top--]; e)e(f"t6Q  
qR@ES J_  
pivotIndex=(i+j)/2; TZgtu+&  
pivot=data[pivotIndex]; E^-c,4'F  
|P5dv>tb F  
SortUtil.swap(data,pivotIndex,j); Oa/^A-'Q  
*Dg@fxCQ  
file://partition Wg}KQ6 6  
l=i-1; 9~UR(Ts}l  
r=j; hCQOwk#  
do{ pf8'xdExH)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [E9iuym  
SortUtil.swap(data,l,r); _`?0w#> 0  
} :qo[@x{  
while(l SortUtil.swap(data,l,r); \n_7+[=E  
SortUtil.swap(data,l,j); ='"Yj  
]t 0o%w  
if((l-i)>THRESHOLD){ 5Dkb/Iagi  
stack[++top]=i; s@L ;3WdO  
stack[++top]=l-1; N]W*ei  
} Nn_fhc>  
if((j-l)>THRESHOLD){ dy6zrgxygP  
stack[++top]=l+1; 2? E;(]dQ  
stack[++top]=j; =CQfs6np:N  
} VD.TosVeWo  
MXSD8]je  
} q{9vY:`[  
file://new InsertSort().sort(data); NO*, }aeG  
insertSort(data); u$JAjA  
} "Da 1BuX\  
/** T, #-: }  
* @param data *8)?ZZMM  
*/ C1-U2@  
private void insertSort(int[] data) { iF`_-t/k  
int temp; a?-Jj\q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m'2F#{  
} &eV5#Ph  
} ["nWIs[h  
} DGJ:#U E  
?c8~VQaQ  
} _f!ko<52  
I[%IW4jJ  
归并排序: %E%=Za  
.w4|$.H  
package org.rut.util.algorithm.support; G!FdTvx$  
n~lB}  
import org.rut.util.algorithm.SortUtil; _h1bVd-  
9'( _*KSH  
/** }d5]N  
* @author treeroot 0eO!,/  
* @since 2006-2-2 x)?V{YAL  
* @version 1.0 n~0wq(8M  
*/ ewcFzlA@  
public class MergeSort implements SortUtil.Sort{ !hHe`  
G4i%/_JU  
/* (non-Javadoc) bm;iX*~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $@VJ@JAe  
*/ \gP?uJ  
public void sort(int[] data) { +vZYuEq_  
int[] temp=new int[data.length]; 0@_8JB ?E  
mergeSort(data,temp,0,data.length-1); $l ,U)  
} _L8&.=4]i  
7}xQ4M\u$  
private void mergeSort(int[] data,int[] temp,int l,int r){ \0|x<~#j'  
int mid=(l+r)/2; }e7/F[c.U  
if(l==r) return ; 1'~+.92Y  
mergeSort(data,temp,l,mid); }zA|M9%E  
mergeSort(data,temp,mid+1,r); ?Z|y-4 &>  
for(int i=l;i<=r;i++){ _CNXyFw.7  
temp=data; u4lM>(3Y}  
} ^fKKsfIf  
int i1=l; .yF-<Y  
int i2=mid+1; n*GB`I*g  
for(int cur=l;cur<=r;cur++){ ZvuY] =^3  
if(i1==mid+1) 5^uX!_ r`  
data[cur]=temp[i2++]; 3~`\FuHHe  
else if(i2>r) 3+>R%TX6i<  
data[cur]=temp[i1++]; rE*yT(:w  
else if(temp[i1] data[cur]=temp[i1++]; `_yksh3zL4  
else og$dv 23  
data[cur]=temp[i2++]; Q8HNST($?  
} 0^{Tq0Ri[  
} YEV;GFI1  
G$ zY&  
} =)y$&Ydj  
g,E)F90  
改进后的归并排序: v0r:qku  
Cdl"TZ<  
package org.rut.util.algorithm.support; e`+  
6 w!qZ4$  
import org.rut.util.algorithm.SortUtil; ="T}mc  
i.9}bw 9u@  
/** ';eAaDM  
* @author treeroot SMvlEj^  
* @since 2006-2-2 T>| +cg  
* @version 1.0 nILUo2e~  
*/ 6+sz4  
public class ImprovedMergeSort implements SortUtil.Sort { R]od/u/$  
v2|zIZ  
private static final int THRESHOLD = 10; }!g$k $y  
s,-<P1}/  
/* VIWH~UR)&!  
* (non-Javadoc) mmFcch$Jv  
* r(]Gd`]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U;&s=M0[  
*/ ;Qd'G7+  
public void sort(int[] data) { :qXREF@h  
int[] temp=new int[data.length]; /_<_X 7  
mergeSort(data,temp,0,data.length-1); ,9|7{j|u  
} v 'L"sgW6I  
AJ 0Bb7  
private void mergeSort(int[] data, int[] temp, int l, int r) { Xj?LU7  
int i, j, k; d}E6d||A  
int mid = (l + r) / 2; $xvwnbq#y  
if (l == r) -XECYwTh  
return; +L?;g pVE&  
if ((mid - l) >= THRESHOLD) = r=/L  
mergeSort(data, temp, l, mid); g3n>}\xG>  
else Uwiy@ T Z  
insertSort(data, l, mid - l + 1); I2{zy|&  
if ((r - mid) > THRESHOLD) .O5|d+S  
mergeSort(data, temp, mid + 1, r); #;2mP6a[  
else :@~3wD[y  
insertSort(data, mid + 1, r - mid); _uh@fRyh  
@zR_[s  
for (i = l; i <= mid; i++) { };(2 na  
temp = data; o) eW5s,6  
} .Xta;Py|J  
for (j = 1; j <= r - mid; j++) { ld~*w  
temp[r - j + 1] = data[j + mid]; 5k_%%><: q  
} IL8&MA%  
int a = temp[l]; w4y ???90)  
int b = temp[r]; 4>=Y@z  
for (i = l, j = r, k = l; k <= r; k++) { O6-"q+H)  
if (a < b) { F8m@mh*8>  
data[k] = temp[i++]; j~2t^Qz  
a = temp; .R+n}>+K  
} else { #$t93EI  
data[k] = temp[j--]; ZCuh^  
b = temp[j]; {flxZ}  
} hEFn>  
} A|L-;P NP  
} nNM)rW  
"^pF2JI  
/** 5tb i};  
* @param data A- hWg;  
* @param l Th])jQ*  
* @param i Y%rC\Ij/i  
*/ =>C3IR/  
private void insertSort(int[] data, int start, int len) { [Az^i>iH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nRZ T~S4  
} b|Ed@C  
} p t{/|P  
} 5geZ6]|  
} q|;+Wp?  
5[qx5|O  
堆排序: fwyz|>H_Y(  
j"+R*H(#  
package org.rut.util.algorithm.support; n]JfdI  
7 ( /  
import org.rut.util.algorithm.SortUtil; ;#D:S6 L  
%}~Ncn_r  
/** 0Ioa;XgOn  
* @author treeroot ]\R%@FCYc  
* @since 2006-2-2 [k +fkr]  
* @version 1.0 bDcWPwe  
*/ bO{wQ1)Z_  
public class HeapSort implements SortUtil.Sort{ @6DV?VL  
pzBd(d^*  
/* (non-Javadoc) i*vf(0G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r#.\5aQ t  
*/ my3W[3#  
public void sort(int[] data) { .7zdA IKW  
MaxHeap h=new MaxHeap(); T;I>5aQ:q4  
h.init(data); 0/%VejZ'  
for(int i=0;i h.remove(); R75np^  
System.arraycopy(h.queue,1,data,0,data.length); Yg7C"3;Vt  
} Q,f5r%A.  
r`'n3#O*  
private static class MaxHeap{ 2:S 4M.j  
;-sF%c  
void init(int[] data){ Hb *&&  
this.queue=new int[data.length+1]; 93N:?B9  
for(int i=0;i queue[++size]=data; sz b],)|18  
fixUp(size); 4~{q=-]V  
} A =k{Rl{LA  
} #$>m`r  
F0FF:><  
private int size=0; Hq$?-%4  
Co>=<\yi  
private int[] queue; kO\aNtK  
O7RW*V:G@  
public int get() { {7X80KI  
return queue[1]; bc|DC,n?  
} g)k::k)<e  
>'lte&  
public void remove() { -5yEd>Z  
SortUtil.swap(queue,1,size--); "Tm`V9  
fixDown(1); /v:+ vh*mS  
} X8b= z9  
file://fixdown y| %rW  
private void fixDown(int k) { h|1 /Q (  
int j; JuT~~Z  
while ((j = k << 1) <= size) { :AB$d~${M>  
if (j < size %26amp;%26amp; queue[j] j++; 13P8Zmco  
if (queue[k]>queue[j]) file://不用交换 dAcy;-[[P  
break; ',p`B-dw  
SortUtil.swap(queue,j,k); 5zF7yvS.w  
k = j; vJfex,#lv  
} * <_8]C0>  
} VS\~t  
private void fixUp(int k) { qMe$Qr8  
while (k > 1) { 9rmOf Jo:  
int j = k >> 1; wg=ge]E5  
if (queue[j]>queue[k]) beYaQz/@W  
break; %<8lLRl  
SortUtil.swap(queue,j,k); 8FThu[  
k = j; {aWTT&-N  
} q>*+.~  
} 8?O6IDeW  
5}4r'P$m:  
} x;Jy-hMNl  
xV4 #_1(  
} dw!cDfT+  
_0<EbJ8Z  
SortUtil: FHS6Mk26  
y  ZsC>  
package org.rut.util.algorithm; 5[Yzi> o[  
eZm,K'/!  
import org.rut.util.algorithm.support.BubbleSort; +mN]VO*y  
import org.rut.util.algorithm.support.HeapSort; -P<e-V%<  
import org.rut.util.algorithm.support.ImprovedMergeSort; PSQ5/l?\>  
import org.rut.util.algorithm.support.ImprovedQuickSort; Tn qspS2;R  
import org.rut.util.algorithm.support.InsertSort; Hinz6k6!  
import org.rut.util.algorithm.support.MergeSort; viT/$7`AI  
import org.rut.util.algorithm.support.QuickSort; >I3#ALF  
import org.rut.util.algorithm.support.SelectionSort; {? jr  
import org.rut.util.algorithm.support.ShellSort; jR#g>MDKB  
O#E]a<N`  
/** /K"koV;  
* @author treeroot d[5?P?h')  
* @since 2006-2-2 8`*Wl;9u  
* @version 1.0 G.,dP +i  
*/ :.IVf Zw  
public class SortUtil { VMUK|pC4 K  
public final static int INSERT = 1; %_!YonRY|X  
public final static int BUBBLE = 2; h$FpH\-  
public final static int SELECTION = 3;  IR,`-  
public final static int SHELL = 4; ?j{LE- (  
public final static int QUICK = 5; $)M8@d  
public final static int IMPROVED_QUICK = 6; UHYnl ]  
public final static int MERGE = 7; *;wPAQE  
public final static int IMPROVED_MERGE = 8; "Fu*F/KW  
public final static int HEAP = 9; <$LVAy"RD  
61q:nWs  
public static void sort(int[] data) { g jJ?*N[  
sort(data, IMPROVED_QUICK); <3iL5}  
} #$QC2;/)F  
private static String[] name={ >v9 ("  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" k"V| f&  
}; bBBW7',[a  
Ms.1RCup  
private static Sort[] impl=new Sort[]{ %B$~yx3#  
new InsertSort(), |>(;gr/5(  
new BubbleSort(), p*8LS7UT  
new SelectionSort(), aCe<*;b@  
new ShellSort(), O<Rm9tZ8  
new QuickSort(), W|oLS  
new ImprovedQuickSort(), mVN^X/L(y  
new MergeSort(), i :wTPR  
new ImprovedMergeSort(), {i)k#`  
new HeapSort() t8,s]I&  
}; ~*9 vn Z@  
v_PhJKE  
public static String toString(int algorithm){ 8o-*s+EY"&  
return name[algorithm-1]; {1.t ZCMT  
} z!quA7s<]  
:[oFe/1K!4  
public static void sort(int[] data, int algorithm) { s88lN=;  
impl[algorithm-1].sort(data); UW*[)yw]  
} /ov&h;  
FV>LD% uu  
public static interface Sort { )pV5l|`  
public void sort(int[] data); "If]qX(w  
} ixZ w;+h  
A"8` 5qa  
public static void swap(int[] data, int i, int j) { ,c#=qb8""  
int temp = data; 8*;88vW"2  
data = data[j]; sG`:mc~0   
data[j] = temp; JW;DA E<  
} ,lLkAd?q  
} 4i>sOP3 B  
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