how to check if an element already exists in an array in javascript
function includes(arrayOfArrays, item) {
let array, i, j;
for(i=0; i<arrayOfArrays.length; ++i) {
array = arrayOfArrays[i];
for(j=0; j<array.length; ++j) {
if(array[j] === item) {
return true;
}
}
}
return false;
}check if an element is already in an array
private boolean ZitAlInArray(int value, List<Integer> list) {
return array.indexOf(value) > -1;
}
private boolean zitAlInArray(int[] array, int index) {
for (int i = 0; i < index; i++) {
if (array[i] == array[index]) {
return true;
}
}
return false;
}Copyright © 2021 Codeinu
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