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Finding all valid word squares in JavaScript
Word Square:
A word square consists of a set of words written out in a square grid, such that the same words can be read both horizontally and vertically.
For instance, once valid word square is −
H E A R T E M B E R A B U S E R E S I N T R E N D
We are required to write a JavaScript function that takes in an array of words. The function should return true if the array given as input forms a valid word square, false otherwise.
For example −
If the input word array is −
const arr = [ "abcd", "bnrt", "crmy", "dtye" ];
Then the output should be −
const output = true;
Example
The code for this will be −
const arr = [
"abcd",
"bnrt",
"crm",
"dt"
];
const findValidSquares = (arr = []) => {
for(let i = 0; i < arr.length; i++){
for(let j = 0; j < arr[i].length; j++){
if(i >= arr.length || j >= arr.length || j >= arr[i].length || i >= arr[j].length){
return false;
};
if(arr[i][j] !== arr[j][i]){
return false;
}
}
};
return true;
};
console.log(findValidSquares(arr));Output
And the output in the console will be −
true
Updated on: 27-Feb-2021
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