Find one word that is used three times

Популярное на сайте:

Как быстро выучить стихотворение наизусть? Запоминание стихов является стандартным заданием во многих школах. 

Как научится читать по диагонали? Скорость чтения зависит от скорости восприятия каждого отдельного слова в тексте. 

Как быстро и эффективно исправить почерк?  Люди часто предполагают, что каллиграфия и почерк являются синонимами, но это не так.

Как научится говорить грамотно и правильно? Общение на хорошем, уверенном и естественном русском языке является достижимой целью. 

I assume that your question means if any of the words in the line exists at least 3 times, then print the line, else discard it. I would use awk, for a more readable and customizable solution:

awk -F '\W+' '{
    delete c; for (i=1;i<=NF;i++) if (length($i) && ++c[$i]==3) {print; next}
}' file

It is a loop for all fields, counting their occurences per line. If any word reaches 3 times, it will print the line, delete the array and go to next line. Also a test for the length of the field exists to avoid printing on any empty fields counted.

Here we can easily customize the meaning of «word» by adding different and/or many field separators, using -F (the standard BREs and EREs are supported). In the above, word separators are all characters except _ and [:alnum:]: awk -F '\W+' or awk -F '[^_[:alnum:]]+', similar to matching word bountaries with grep.

For a human language, we may need different word bountaries, like everything except the letters, like: awk -F '[^[:alpha:]]+' or except letters and digits: awk -F '[^[:alnum:]]+' or to include not only the underscore, but the dash also into words: awk -F '[^-_[:alnum:]]+'.

Without setting -F, only the whitespace characters are used.

Recommended textbook solutions

1. Glaciers
   provide vital evidence of climate …

What you need is not pills but
a simple … of scene.

If you need money, there’s
some spare … in my coat pocket.

2. Grassland and savannah …
a substantial part of Southern Africa.

It’s a long journey — let’s
take some books to … the children.

The protesting students intend
to … the Holman Building.

3. The vet said the … on the
dog’s face was not cancerous.

She had a … in her throat
and a tear in her eye when she said goodbye.

Get up and do some work, you
lazy …

4. Many of the wildebeest
didn’t make it and … half-way across the river.

My voice was … out by the
sound of builders drilling.

I … my meal in sauce to hide
the bitter taste.

5. The falconer trained the
hawk to fly in a perfectly … line.

So let’s get this … ; you
say you saw the man break in through the window.

Why can’t you just give me a …
answer for once in your life?

31. Comment on the change of meanings in the italicized words.

1. They sat
on the rug before the fireplace, watching the rising tongues
of flame.
2. He inspired universal confidence and had an
iron nerve.
3. He was burning
with a desire
to meet his old friends. 4. As I spoke, rage
sparkled
in my eyes. 5. Emotion squeezed
Soames’ heart. 6. Here was the great mysterious city which was still
a
magnet
for her. 7. Carrie’s anger melted
on the instant. 8. Some books are to
be tasted,
others swallowed,
and some few to
be chewed and
digested.

32. Define the meanings of the italicized words in the following sentences.

1. I began
to search the flat, looking in drawers and boxes to see if I could
find a
key.
I tumbled with a sort of splash upon the
keys
of a piano. Now the orchestra is playing yellow cocktail music and
the opera of voices pitches a
key higher.

2. I sat
down with my
head
in my hands, until I heard the phone taken up inside and the butler’s
voice calling a taxi. G.Quarterman possessed more power than many
heads
of the state.

3. I walked
into Hyde Park, fell
flat upon the grass and almost immediately fell
asleep.

4. Her
mouth
opened crookedly half an inch, and she shot a few words at one like
pebbles. Would you like me to come to the
mouth
of the river with you? I put the letter into the
mouth
of the box and let it go.

Homonyms Homographs

33. How would you pronounce each of the underlined words in the sentences below? Chose a word with a similar sound from the brackets.

1.
The girl I live
with knows a good pub with live
music. (dive/give)

2.
The main house
houses
a collection of rare stamps. (mouse/rouse)

3.
They bathed
the children after they had bathed
in the sea. (lathe/path)

4.
You sow
the seeds while I feed the sow.
(cow/glow)

5.
The violinist in the bow
tie took a bow.
(allow/flow)

6.
He’s the lead
singer in the group ‘Lead
piping’. (head/deed)

7.
What a row
from the last house in the row!
(plough/though)

8.
Does he still suffer from his war wound?
(found/mooned)

9.
I wound
the rope around the tree to strengthen it against the gale.
(round/tuned)

10.
It’s quite hard to wind
in the sails in this wind.
(find/tinned)

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]

• #
• #
• #
• #
• #
• #
• #
• #
• #
• #
• #