How old is it roughly?

Question

Write a short program which takes in a positive number of seconds representing an age, and outputs an estimate of that time in English.

Your program must output the least precise amount of time which has passed, among the following metrics and their lengths in seconds:

second = 1
minute = 60
hour   = 60 * 60
day    = 60 * 60 * 24
week   = 60 * 60 * 24 * 7
month  = 60 * 60 * 24 * 31
year   = 60 * 60 * 24 * 365

Examples

input      : output
1          : 1 second
59         : 59 seconds
60         : 1 minute
119        : 1 minute
120        : 2 minutes
43200      : 12 hours
86401      : 1 day
1815603    : 3 weeks
1426636800 : 45 years

As you can see above, after the time of say, 1 day (60 * 60 * 24 = 86400 seconds), we no longer output minute(s) or hour(s), but only days until we surpass the time of one week, and so on.

Consider the given length of time to be an age. For example, after 119 seconds, 1 minute has passed, not 2.

Rules

• No specification for 0 or negative inputs.
• Follow proper pluralization. Every measure greater than 1 must include an s following the word.
• You may not use a pre-existing library which serves the function of the entire program.
• This is a code golf, shortest program wins the internet points.
• Have fun!

Answer 1

Jelly, 62 bytes

TṀị
“¢<<ð¢‘×\×€0¦7,31,365F⁸:µç“ɲþḣ⁹ḢṡṾDU¤µQƝṁ⁼ẹ»Ḳ¤ṭÇK;⁸Ç>1¤¡”s

A full program printing the result.
(As a monadic link it returns a list of an integer followed by characters)

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How?

TṀị - Link 1: list of integers, K; list, V  e.g. [86401,1440,24,1,0,0,0], ["second","minute","hour","day","week","month","year"]
T   - truthy indexes of K                        [1,2,3,4]
 Ṁ  - maximum                                    4
  ị - index into V                               "day"

“¢<<ð¢‘×\×€0¦7,31,365F⁸:µç“...»Ḳ¤ṭÇK;⁸Ç>1¤¡”s - Main link: integer, N  e.g. 3599
“¢<<𢑠                                      - list of code-page indices = [1,60,60,24,1]
        \                                     - cumulative reduce with:
       ×                                      -  multiplication = [1,60,3600,86400,86400]
             7,31,365                         - list of integers = [7,31,365]
            ¦                                 - sparse application...
           0                                  - ...to index: 0 (rightmost)
         ×€                                   - ...of: multiplication for €ach = [1,60,3600,86400,[604800,2678400,31536000]]
                     F                        - flatten = [1,60,3600,86400,604800,2678400,31536000]
                      ⁸                       - chain's left argument, N    3599
                       :                      - integer divide         [3599,59,0,0,0,0,0]
                        µ                     - start a new monadic chain, call that X
                                ¤             - nilad followed by links as a nilad:
                          “...»               -   compression of "second minute hour day week month year"
                               Ḳ              -   split at spaces = ["second","minute","hour","day","week","month","year"]
                         ç                    - call the last link (1) as a dyad - i.e. f(X,["second","minute","hour","day","week","month","year"])
                                              -                             "minute"
                                  Ç           - call the last link (1) as a monad - i.e. f(X,X)
                                              -                             59
                                 ṭ            - tack                        [59,['m','i','n','u','t','e']]
                                   K          - join with spaces            [59,' ','m','i','n','u','t','e']
                                           ”s - literal character '
                                          ¡   - repeat...
                                         ¤    - ...number of times: nilad followed by link(s) as a nilad:
                                     ⁸        -   chain's left argument, X  [3599,59,0,0,0,0,0]
                                      Ç       -   call the last link (1) as a monad - i.e. f(X,X)
                                              -                             59
                                       >1     -   greater than 1?           1
                                    ;         - concatenate                 [59,' ','m','i','n','u','t','e','s']
                                              - implicit print - smashes to print  "59 minutes"

Answer 2

C, 194 180 144 128 characters

Thanks to @gastropher for the code reductions. I forgot that C allows for implicit parameters using K&R-style functions! Also thanks to @gmatht for the idea of putting literals inside instead of arrays. I extended that to the characters by abusing taking advantage of wide character/char16_t strings! The compiler doesn't seem to like \1 in its ☺ form though.

f(t,c,d){for(c=7;!(d=t/L"\1<ฐ\1•▼ŭ"[--c]/(c>2?86400:1)););printf("%d %.6s%s\n",d,c*6+(char*)u"敳潣摮業畮整潨牵 慤y†敷步 潭瑮h敹牡",(d<2)+"s");}

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Original solution

I split up the arrays into separate lines to make it easier to see the rest of the solution.

char *n[]={"second","minute","hour","day","week","month","year"};
int o[]={1,60,3600,86400,604800,2678400,31536000};
f(int t){int c=7,d;while(!(d=t/o[--c]));printf("%d %s%s\n",d,n[c],d>1?"s":"");}

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Running the divisors in order from largest to smallest, we get the coarsest unit of time. The program misbehaves if you give it 0 seconds, but as the specification explicitly excludes this value, I deem that to be acceptable.

Answer 3

Perl 5, 110 bytes

year31536000month2678400week604800day86400hour3600minute60second1=~s:\D+:say"$% $&",$_=$%>1&&"s"if$%=$_/$':reg

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Answer 4

Stax, 54 bytes

▀♂♂┼╕Qá◙à*ä∙Φò►⌠╨Ns↔║►πîÇ∙cI≡ªb?δ♪9gΓ╕┬≥‼⌡Öå01:♪EoE╘≡ë

Run and debug it

Here's the unpacked, ungolfed, ascii representation of the same program.

                            stack starts with total seconds
c60/                        push total minutes to stack
c60/                        ... hours 
c24/                        ... days
Yc7/                        ... weeks
y31/                        ... months
y365/                       ... years
L                           make a list out of all the calculated time units
`)sQP(dr'pk,oV4?_HIFD?x`j   compressed literal for singular forms of unit names
\                           zip totals with names
rF                          foreach pair of total and name (in reverse orer)
  h!C                       skip if the current total is falsey (0)
  _J                        join the total and unit name with a space
  's_1=T+                   concat 's' unless the total is one

Following execution, since there's no other output, the top of the stack is printed implicitly.

Run this one

Answer 5

JavaScript (ES6), 131 bytes

n=>[60,60,24,7,31/7,365/31,0].map((v,i)=>s=n<1?s:(k=n|0)+' '+'second,minute,hour,day,week,month,year'.split`,`[n/=v,i])|k>1?s+'s':s

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Answer 6

Java 8, 197 195 157 bytes

n->(n<60?n+" second":(n/=60)<60?n+" minute":(n/=60)<24?n+" hour":(n/=24)<7?n+" day":n<31?(n/=7)+" week":n<365?(n/=31)+" month":(n/=365)+" year")+(n>1?"s":"")

-38 bytes thanks to @OlivierGrégoire.

Explanation:

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n->               // Method with long parameter and String return-type
  (n<60?          //  If `n` is below 60:
    n             //   Output `n`
    +" second"    //   + " second"
   :(n/=60)<60?   //  Else-if `n` is below 60*60
    n             //   Integer-divide `n` by 60, and output it
    +" minute"    //   + " minute"
   :(n/=60)<24?   //  Else-if `n` is below 60*60*24:
    n             //   Integer-divide `n` by 60*60, and output it
    +" hour"      //   + " hour"
   :(n/=24)<7?    //  Else-if `n` is below 60*60*24*7:
    n             //   Integer-divide `n` by 60*60*24, and output it
    +" day"       //   + " day"
   :n<31?         //  Else-if `n` is below 60*60*24*31:
    (n/=7)        //   Integer-divide `n` by 60*60*24*7, and output it
    +" week"      //   + " week"
   :n<365?        //  Else-if `n` is below 60*60*24*365:
    (n/=31)       //   Integer-divide `n` by 60*60*24*31, and output it
    +" month"     //   + " month"
   :              //  Else:
    (n/=365)      //   Integer-divide `n` by 60*60*24*365, and output it
    +" year")     //   + " year"
   +(n>1?"s":"")  //  And add a trailing (plural) "s" if (the new) `n` is larger than 1

Answer 7

Kotlin, 205 203 196 bytes

x->val d=86400
with(listOf(1 to "second",60 to "minute",3600 to "hour",d to "day",d*7 to "week",d*31 to "month",d*365 to "year").last{x>=it.first}){val c=x/first
"$c ${second+if(c>1)"s" else ""}"}

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Answer 8

APL+WIN, 88 119 bytes

Original version missed out weeks and months as pointed out by Phil H;(

Prompts screen input of number of seconds

a←⌽<\⌽1≤b←⎕÷×\1 60 60 24 7,(31÷7),365÷31⋄b,(-(b←⌊a/b)=1)↓∊a/'seconds' 'minutes' 'hours' 'days' 'weeks' 'months' 'years'

Explanation

b←⎕÷×\1 60 60 24 7,(31÷7),365÷31 prompts for input and converts to years, days, hours, minutes, seconds

a←⌽<\⌽1≤b identify largest unit of time and assign it to a

a/'years' 'days' 'hours' 'minutes' 'seconds' select time unit

(-(b←⌊a/b)=1)↓∊ determine if singular if so drop final s in time unit

b, concatenate number of units to time unit from previous steps

Answer 9

T-SQL, 306 bytes (281 bytes without I/O)

DECLARE @n INT=1
DECLARE @r VARCHAR(30)=TRIM(COALESCE(STR(NULLIF(@n/31536000,0))+' year',STR(NULLIF(@n/2678400,0))+' month',STR(NULLIF(@n/604800,0))+' week',STR(NULLIF(@n/86400,0))+' day',STR(NULLIF(@n/3600,0))+' hour',STR(NULLIF(@n/60,0))+' minute',STR(@n)+' second'))IF LEFT(@r,2)>1 SET @r+='s'
PRINT @r

Answer 10

R, 157 bytes

function(n,x=cumprod(c(1,60,60,24,7,31/7,365/31)),i=cut(n,x),o=n%/%x[i])cat(o," ",c("second","minute","hour","day","week","year")[i],"if"(o>1,"s",""),sep="")

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cut is handy, since it splits ranges into factors, which are stored internally as integers, meaning we can use them as array indices as well. We can probably do something a bit more clever with the time period names, but I can't figure it out just yet.

Answer 11

JavaScript (Node.js), 177 bytes

x=>{return d=86400,v=[[d*365,'year'],[d*31,'month'],[d*7,'week'],[d,'day'],[3600,'hour'],[60,'minute'],[1,'second']].find(i=>x>=i[0]),c=parseInt(x/v[0]),c+' '+v[1]+(c>1?'s':'')}

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Answer 12

Python 2, 146 144 bytes

lambda n,d=86400:[`n/x`+' '+y+'s'*(n/x>1)for x,y in zip([365*d,31*d,7*d,d,3600,60,1],'year month week day hour minute second'.split())if n/x][0]

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2 bytes saved thanks to Jonathan Allan

Answer 13

Batch, 185 bytes

@for %%t in (1.second 60.minute 3600.hour 43200.day 302400.week, 1339200.month, 15768000.year)do @if %1 geq %%~nt set/an=%1/%%~nt&set u=%%~xt
@if %n% gtr 1 set u=%u%s
@echo %n%%u:.= %

Answer 14

PHP, 183 bytes

<?$a=[second=>$l=1,minute=>60,hour=>60,day=>24,week=>7,month=>31/7,year=>365/31];foreach($a as$p=>$n){$q=$n*$l;if($q<=$s=$argv[1])$r=($m=floor($s/$q))." $p".($m>1?s:"");$l=$q;}echo$r;

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Answer 15

Julia 0.6, 161 bytes

f(n,d=cumprod([1,60,60,24,7,31/7,365/31]),r=div.(n,d),i=findlast(r.>=1),l=Int(r[i]))="$l $(split("second minute hour day week month year",' ')[i])$("s"^(l>1*1))"

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Answer 16

Ruby, 129 bytes

->n{x=[365*d=24*k=3600,d*31,d*7,d,k,60,1].index{|j|0<d=n/k=j};"#{d} #{%w{year month week day hour minute second}[x]}#{d>1??s:p}"}

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Answer 17

Perl 6/Rakudo 138 bytes

I'm sure there's further to go, but for now

{my @d=(365/31,31/7,7,24,60,60);$_/=@d.pop while @d&&$_>@d[*-1];$_.Int~" "~ <year month week day hour minute second>[+@d]~($_>1??"s"!!"")}

Explicate:

{ # bare code block, implicit $_ input
    my @d=(365/31,31/7,7,24,60,60); # ratios between units
    $_ /= @d.pop while @d && $_ > @d[*-1]; # pop ratios off @d until dwarfed
    $_.Int~   # implicitly output: rounded count
        " "~  # space
        <year month week day hour minute second>[+@d]~ # unit given @d
        ($_>1??"s"!!"")  # plural
}

Answer 18

R, 336

Working in progress

function(x){
a=cumprod(c(1,60,60,24,7,31/7,365/31))
t=c("second","minute","hour","day","week","month")
e=as.data.frame(cbind(table(cut(x,a,t)),a,t))
y=x%/%as.integer(as.character(e$a[e$V1==1]))
ifelse(x>=a[7],paste(x%/%a[7],ifelse(x%/%a[7]==1,"year","years")),
ifelse(y>1,paste(y,paste0(e$t[e$V1==1],"s")),paste(y,e$t[e$V1==1])))}

Answer 19

R, 246 bytes

f=function(x,r=as.integer(strsplit(strftime(as.POSIXlt(x,"","1970-01-01"),"%Y %m %V %d %H %M %S")," ")[[1]])-c(1970,1,1,1,1,0,0),i=which.max(r>0)){cat(r[i],paste0(c("year","month","week","day","hour","minute","second")[i],ifelse(r[i]>1,"s","")))}

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This is using time formating instead of arithemtics, just for the hell of it. Maybe others could make this smaller?