Wright Homework 10

library(tidyverse)

## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
## ✔ dplyr     1.1.2     ✔ readr     2.1.4
## ✔ forcats   1.0.0     ✔ stringr   1.5.0
## ✔ ggplot2   3.4.4     ✔ tibble    3.2.1
## ✔ lubridate 1.9.2     ✔ tidyr     1.3.0
## ✔ purrr     1.0.2     
## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag()    masks stats::lag()
## ℹ Use the conflicted package (<http://conflicted.r-lib.org/>) to force all conflicts to become errors

class(state.name)

## [1] "character"

data = state.name

Question 1

Calcualte the length of the vector and of each string

length(data)

## [1] 50

str_length(data)

##  [1]  7  6  7  8 10  8 11  8  7  7  6  5  8  7  4  6  8  9  5  8 13  8  9 11  8
## [26]  7  8  6 13 10 10  8 14 12  4  8  6 12 12 14 12  9  5  4  7  8 10 13  9  7

Question 2

Identify the following states: Arizona, California, Illinois, Orgeon

str_view_all(data, "Arizona|California|Illinois|Oregon")

## Warning: `str_view()` was deprecated in stringr 1.5.0.
## ℹ Please use `str_view_all()` instead.
## This warning is displayed once every 8 hours.
## Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
## generated.

##  [1] │ Alabama
##  [2] │ Alaska
##  [3] │ <Arizona>
##  [4] │ Arkansas
##  [5] │ <California>
##  [6] │ Colorado
##  [7] │ Connecticut
##  [8] │ Delaware
##  [9] │ Florida
## [10] │ Georgia
## [11] │ Hawaii
## [12] │ Idaho
## [13] │ <Illinois>
## [14] │ Indiana
## [15] │ Iowa
## [16] │ Kansas
## [17] │ Kentucky
## [18] │ Louisiana
## [19] │ Maine
## [20] │ Maryland
## ... and 30 more

Question 3

Identify all states that begin with the letter d.

str_view_all(data, "^D")

##  [1] │ Alabama
##  [2] │ Alaska
##  [3] │ Arizona
##  [4] │ Arkansas
##  [5] │ California
##  [6] │ Colorado
##  [7] │ Connecticut
##  [8] │ <D>elaware
##  [9] │ Florida
## [10] │ Georgia
## [11] │ Hawaii
## [12] │ Idaho
## [13] │ Illinois
## [14] │ Indiana
## [15] │ Iowa
## [16] │ Kansas
## [17] │ Kentucky
## [18] │ Louisiana
## [19] │ Maine
## [20] │ Maryland
## ... and 30 more

Question 4

Identify all whose names finish with the letter a OR e

str_view_all(data, "e$|a$")

##  [1] │ Alabam<a>
##  [2] │ Alask<a>
##  [3] │ Arizon<a>
##  [4] │ Arkansas
##  [5] │ Californi<a>
##  [6] │ Colorado
##  [7] │ Connecticut
##  [8] │ Delawar<e>
##  [9] │ Florid<a>
## [10] │ Georgi<a>
## [11] │ Hawaii
## [12] │ Idaho
## [13] │ Illinois
## [14] │ Indian<a>
## [15] │ Iow<a>
## [16] │ Kansas
## [17] │ Kentucky
## [18] │ Louisian<a>
## [19] │ Main<e>
## [20] │ Maryland
## ... and 30 more

Question 5

Identify state names composed of two words.

str_subset(data, ". .")

##  [1] "New Hampshire"  "New Jersey"     "New Mexico"     "New York"      
##  [5] "North Carolina" "North Dakota"   "Rhode Island"   "South Carolina"
##  [9] "South Dakota"   "West Virginia"

Question 6

Identify all states that contain at least one of these letters: n, t, w, c, at any position within the name. Highlight/extract the entire state name.

str_subset(data, "[NnTtWwCc]")

##  [1] "Arizona"        "Arkansas"       "California"     "Colorado"      
##  [5] "Connecticut"    "Delaware"       "Hawaii"         "Illinois"      
##  [9] "Indiana"        "Iowa"           "Kansas"         "Kentucky"      
## [13] "Louisiana"      "Maine"          "Maryland"       "Massachusetts" 
## [17] "Michigan"       "Minnesota"      "Montana"        "Nebraska"      
## [21] "Nevada"         "New Hampshire"  "New Jersey"     "New Mexico"    
## [25] "New York"       "North Carolina" "North Dakota"   "Oregon"        
## [29] "Pennsylvania"   "Rhode Island"   "South Carolina" "South Dakota"  
## [33] "Tennessee"      "Texas"          "Utah"           "Vermont"       
## [37] "Virginia"       "Washington"     "West Virginia"  "Wisconsin"     
## [41] "Wyoming"

Question 7

Identify all states that contain at least one of these letters: c or i. Include the initial letters from your count (e.g., include Colorado).

str_view_all(data, "[CcIi]")%>%
  print(n=50)

##  [1] │ Alabama
##  [2] │ Alaska
##  [3] │ Ar<i>zona
##  [4] │ Arkansas
##  [5] │ <C>al<i>forn<i>a
##  [6] │ <C>olorado
##  [7] │ <C>onne<c>t<i><c>ut
##  [8] │ Delaware
##  [9] │ Flor<i>da
## [10] │ Georg<i>a
## [11] │ Hawa<i><i>
## [12] │ <I>daho
## [13] │ <I>ll<i>no<i>s
## [14] │ <I>nd<i>ana
## [15] │ <I>owa
## [16] │ Kansas
## [17] │ Kentu<c>ky
## [18] │ Lou<i>s<i>ana
## [19] │ Ma<i>ne
## [20] │ Maryland
## [21] │ Massa<c>husetts
## [22] │ M<i><c>h<i>gan
## [23] │ M<i>nnesota
## [24] │ M<i>ss<i>ss<i>pp<i>
## [25] │ M<i>ssour<i>
## [26] │ Montana
## [27] │ Nebraska
## [28] │ Nevada
## [29] │ New Hampsh<i>re
## [30] │ New Jersey
## [31] │ New Mex<i><c>o
## [32] │ New York
## [33] │ North <C>arol<i>na
## [34] │ North Dakota
## [35] │ Oh<i>o
## [36] │ Oklahoma
## [37] │ Oregon
## [38] │ Pennsylvan<i>a
## [39] │ Rhode <I>sland
## [40] │ South <C>arol<i>na
## [41] │ South Dakota
## [42] │ Tennessee
## [43] │ Texas
## [44] │ Utah
## [45] │ Vermont
## [46] │ V<i>rg<i>n<i>a
## [47] │ Wash<i>ngton
## [48] │ West V<i>rg<i>n<i>a
## [49] │ W<i>s<c>ons<i>n
## [50] │ Wyom<i>ng

Question 8

Identify states that are exactly 6-letter long

str_subset(data, "^......$")

## [1] "Alaska" "Hawaii" "Kansas" "Nevada" "Oregon"

Question 9

Identify states that are at least 6-letter long

str_view_all(data, ".{6}")

##  [1] │ <Alabam>a
##  [2] │ <Alaska>
##  [3] │ <Arizon>a
##  [4] │ <Arkans>as
##  [5] │ <Califo>rnia
##  [6] │ <Colora>do
##  [7] │ <Connec>ticut
##  [8] │ <Delawa>re
##  [9] │ <Florid>a
## [10] │ <Georgi>a
## [11] │ <Hawaii>
## [12] │ Idaho
## [13] │ <Illino>is
## [14] │ <Indian>a
## [15] │ Iowa
## [16] │ <Kansas>
## [17] │ <Kentuc>ky
## [18] │ <Louisi>ana
## [19] │ Maine
## [20] │ <Maryla>nd
## ... and 30 more

Quesion 10

Find all states that start with two consonants.

str_subset(data, "^[^AEIOU][^aeiou*]")

## [1] "Florida"      "Rhode Island" "Wyoming"

Question 11

Find all states that have two or more vowels in a row.

str_view_all(data, "[AaEeIiOoUu][aeiou]")

##  [1] │ Alabama
##  [2] │ Alaska
##  [3] │ Arizona
##  [4] │ Arkansas
##  [5] │ Californ<ia>
##  [6] │ Colorado
##  [7] │ Connecticut
##  [8] │ Delaware
##  [9] │ Florida
## [10] │ G<eo>rg<ia>
## [11] │ Haw<ai>i
## [12] │ Idaho
## [13] │ Illin<oi>s
## [14] │ Ind<ia>na
## [15] │ <Io>wa
## [16] │ Kansas
## [17] │ Kentucky
## [18] │ L<ou>is<ia>na
## [19] │ M<ai>ne
## [20] │ Maryland
## ... and 30 more

Question 12

List the states that start with a vowel and end with a consonant

str_view_all(data, "^[AEIOU].*[^aeiou]$")%>%
  print(n=50)

##  [1] │ Alabama
##  [2] │ Alaska
##  [3] │ Arizona
##  [4] │ <Arkansas>
##  [5] │ California
##  [6] │ Colorado
##  [7] │ Connecticut
##  [8] │ Delaware
##  [9] │ Florida
## [10] │ Georgia
## [11] │ Hawaii
## [12] │ Idaho
## [13] │ <Illinois>
## [14] │ Indiana
## [15] │ Iowa
## [16] │ Kansas
## [17] │ Kentucky
## [18] │ Louisiana
## [19] │ Maine
## [20] │ Maryland
## [21] │ Massachusetts
## [22] │ Michigan
## [23] │ Minnesota
## [24] │ Mississippi
## [25] │ Missouri
## [26] │ Montana
## [27] │ Nebraska
## [28] │ Nevada
## [29] │ New Hampshire
## [30] │ New Jersey
## [31] │ New Mexico
## [32] │ New York
## [33] │ North Carolina
## [34] │ North Dakota
## [35] │ Ohio
## [36] │ Oklahoma
## [37] │ <Oregon>
## [38] │ Pennsylvania
## [39] │ Rhode Island
## [40] │ South Carolina
## [41] │ South Dakota
## [42] │ Tennessee
## [43] │ Texas
## [44] │ <Utah>
## [45] │ Vermont
## [46] │ Virginia
## [47] │ Washington
## [48] │ West Virginia
## [49] │ Wisconsin
## [50] │ Wyoming