Salam Tahir bhai I pick this algorithm from data structure book yeh algorithm stack ko use kerte hue brackets ko check kerta hai ke string mein brackets "( ) or { } or [ ]"sahi hain ya nahi is mein mujhe thora masla hai file send ker raha hon check ker ke batai ke sahi implement kia hai ya nahi
mujhe masla variable 'j' mein pop karane ke bad if ki condition kya lage gi is mein hai check kare ke mai ne sahi lagai hai ya nahi